DENIS CIMAF
The technical edge in brushcutting
DENIS CIMAF Inc., manufacturer of industrial brush cutters
DENIS CIMAF Inc. specializes in developing high-performance industrial brushcutters. In applications such as land clearing, forest fire prevention, roadside maintenace or power, oil or gas line right-of-way preparation or maintenance, DENIS CIMAF brushcutters and brushcutter-chippers are recognized for their productivity and effectiveness.
DENIS CIMAF attachments reduce undesirable vegetation into chips faster even with their lower power requirement. So efficient that no extra power pack is needed! These machines are divided into four main product groups:
DENIS CIMAF is a family-run company that adheres to the core values of respect for the environment, innovation and customer service. We as an organization have made ongoing investments over the past 15 years in the research and development of environmentally sound industrial brushcutting solutions. Well established in Canada, the United States, Chili and Japan as a leading manufacturer of vegetation control equipment, DENIS CIMAF continues to offer the technical edge in brushcutting products.
DENIS CIMAF line of industrial brushcutters
Presentation
Select the model that meets your needs
Presentation
DENIS CIMAF brushcutters are high efficiency industrial attachments designed for a broad range of carriers. They are divided into four product groups:
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Dessin excavatrice avec DAH
DAH horizontal-shaft brushcutter-chippers
DAH horizontal-shaft brushcutter-chippers for excavators and backhoes
Dessin skid steer avec DAF
DAF horizontal-shaft brushcutter-chippers
DAF horizontal-shaft brushcutter-chippers for <temporaire/>skid steers</temporaire/>
Dessin niveleuse avec DTN
DTN vertical-shaft brushcutter-mowers
DTN brushcutter-mowers for graders
Dessin mini-excavatrice avec DAV
DAV vertical-shaft brushcutters
DAV vertical-shaft brushcutters for excavators and backhoes
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DAH and DAF products use DENIS CIMAF’s patented horizontal-shaft rotor technology with fixed knives and bolt-on blades. This technology offers higher productivity with lower energy requirements.
DTN and DAV products employ vertical-shaft disc technology with two freely rotating knives. By its simple design, this technology offers lower operating costs.
Select the model that meets your needs
Selecting the model that meets your needs
A good place to start would be the product group descriptions.
Or consult the index below to zero in quickly on the models best suited for your carrier.
mini-image de l'index des produits[<lien=DOC INDEX VISUEL DES PRODUITS/>]
Visual index of DENIS CIMAF products
<under construction/>Alternatively, you may [answer the following questions <lien=FORM QUESTIONS CHOIX PRODUITS/>] and the models that seem to be best suited to your needs will be automatically listed. </under construction/>
Finally, you always have the option of contacting us directly.
DAH group of horizontal-shaft brushcutter-chippers for excavators
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DAH/>]
Description
The DAH brushcutter-chippers are land clearing and vegetation control tools mounted on excavators and backhoes. These industrial, hydraulic attachments are ideal for intensive brushcutting - site development, transmission line and pipeline right-of-way development and maintenance, and roadside maintenance work.
DAH brushcutters use DENIS CIMAF’s patented horizontal-shaft rotor technology with fixed knives and bolt-on cutting blades, a design with numerous advantages:
DAH models offer variable displacement, axial-piston motors that minimize overheating problems and improve re-acceleration, […]) and timing-belt drive to eliminate slippage.
There are two types of DAH brushcutters: the standard version designed for intensive use, and the heavy industrial version intended for the most difficult and demanding jobs. Both versions offer narrow and wide cutting widths, providing solutions for 7- to 30-ton excavators.
Specifications
Below are the specifications for each of the brushcutter-chippers designed for use on excavators. For detailed information, click on product name.
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Cutting width
Weight
Required hydraulic flow
Required pressure
Typical excavator
Maximum tree diameter
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Note:
DAH-150 brushcutter-chippers for excavators
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DAH-150/>]
Description
Features of the DAH-150 horizontal-shaft brushcutter-chipper:
Like other products in the DAH product group, the DAH-150 uses DENIS CIMAF’s patented horizontal-shaft rotor technology, a technology with numerous advantages:
The DAH-150 also offers a variable displacement, axial-piston motor to minimize overheating problems and improve re-acceleration […])and a timing-belt drive to eliminate slippage.
Specifications
([PDF version <lien=DOC FCH DAH150 PDF/>])
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DAH-100 brushcutter-chippers for excavators
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DAH-100/>]
Description
Features of the DAH-100 horizontal-shaft brushcutter-chipper:
Like other products in the DAH product group, the DAH-100 uses DENIS CIMAF’s patented horizontal-shaft rotor technology, a technology with numerous advantages:
The DAH-100 model also offers a variable displacement, axial-piston motor to minimize overheating problems and improve re-acceleration […]) and a timing-belt drive to eliminate slippage.
Specifications
([PDF version <lien=DOC FCH DAH-100 PDF/>])
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DAH-060 brushcutter-chippers for excavators
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DAH-060/>]
Description
Features of the DAH-060 horizontal-shaft brushcutter-chipper:
Like other products in the DAH product group, the DAH-060 uses DENIS CIMAF’s patented horizontal-shaft rotor technology, a technology with numerous advantages:
The DAH-060 also offers a variable displacement, axial-piston motor to minimize overheating problems and improve re-acceleration […]) and a timing-belt drive to eliminate slippage.
Specifications
([PDF version <lien=DOC FCH DAH060 PDF/>])
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DAH-050 brushcutter-chippers for excavators
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DAH-050/>]
Description
Features of the DAH-050 horizontal-shaft brushcutter-chipper:
Like other products in the DAH product group, the DAH-050 uses DENIS CIMAF’s patented horizontal-shaft rotor technology, a technology with numerous advantages:
The DAH-050 also offers a variable displacement, axial-piston motor to minimize overheating problems and improve re-acceleration […]) and a timing-belt drive to eliminate slippage.
Specifications
([PDF version <lien=DOC FCH DAH050 PDF/>])
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DAF group of horizontal-shaft, front-mounted brushcutter-chippers
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGE DAF/>]
Description
The DAF front-mounted brushcutter-chippers evolved from adapting the DAH series to vehicles such as wheeled or tracked skid steers or other dedicated units that are designed for use with front-mounted attachments. These industrial hydraulic attachments are ideal for intensive brushcutting applications including land clearing, development and maintenance of transmission line and pipeline right-of-ways, and roadside maintenance.
DAF brushcutters use DENIS CIMAF’s patented horizontal-shaft rotor technology with fixed knives and bolt-on cutting blades, a design that offers numerous advantages:
DAF models also have one or two variable displacement, axial-piston motors to minimize overheating problems and improve re-acceleration […]) and a timing-belt drive system to eliminate slippage.
There are two versions of the DAF model: the double-drive industrial version and the single-drive unit. The double-drive version, which is currently not sold in Canada, the United States and the European Union, will be available in these markets by late May 2007. Don't delay. Contact us immediately to reserve a unit!
Specifications
Below are the main specifications for each of the front-mounted brushcutter-chippers. For detailed information, click on product name.
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Cutting width
Weight
Required hydraulic flow
Required pressure
Typical carrier
Maximum tree diameter
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Note:
DAF-240Ex front-mounted brushcutter-chippers
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DAF-240EX/>]
Description
Features of the DAF-240Ex front-mounted horizontal-shaft brushcutter-chipper:
Like other products in the DAF product group, the DAF-240Ex uses DENIS CIMAF’s patented horizontal-shaft rotor technology, a technology with numerous advantages:
The DAF-240Ex also offers two variable displacement, axial-piston motors to minimize overheating problems and improve re-acceleration […]), each with a timing-belt drive to eliminate slippage.
Specifications
([PDF version <lien=DOC FCH DAF240EX PDF/>])
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DAF-210Ex front-mounted brushcutter-chippers
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DAF210EX/>]
Description
Features of the DAF-210Ex front-mounted horizontal-shaft brushcutter-chipper:
Like other products in the DAF product group, the DAF-210Ex uses DENIS CIMAF’s patented horizontal-shaft rotor technology, a technology with numerous advantages:
The DAF-210Ex also offers two variable displacement, axial-piston motors to minimize overheating problems and improve re-acceleration […]) each with a timing-belt drive to eliminate slippage.
Specifications
([PDF version <lien=DOC FCH DAF210EX PDF/>])
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DAF-210E front-mounted brushcutter-chippers
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DAF210E/>]
Description
Features of the DAF-210E front-mounted horizontal-shaft brushcutter-chipper:
Like other products in the DAF product group, the DAF-210E uses DENIS CIMAF’s patented horizontal-shaft rotor technology, a technology with numerous advantages:
The DAF-210E also offers a variable displacement, axial-piston motor to minimize overheating problems and improve re-acceleration […]) and a timing-belt drive to eliminate slippage.
Specifications
([PDF version <lien=DOC FCH DAF210E PDF/>])
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DAF-180E front-mounted brushcutter-chippers for skid steers
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DAF-180E/>]
Description
Features of the DAF-180E front-mounted horizontal-shaft brushcutter-chipper:
Like other products in the DAF product group, the DAF-180E uses DENIS CIMAF’s patented horizontal-shaft rotor technology, a technology with numerous advantages:
The DAF-180E also offers a variable displacement, axial-piston motor to minimize overheating problems and improve re-acceleration […]) and a timing-belt drive to eliminate slippage.
Specifications
([PDF version <lien=DOC FCH DAF180E PDF/>])
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DAF-180D front-mounted brushcutter-chippers for skid steers
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DAF-180D/>]
Description
Features of the DAF-180D front-mounted horizontal-shaft brushcutter-chipper:
Like other products in the DAF product group, the DAF-180D uses DENIS CIMAF’s patented horizontal-shaft rotor technology, a technology with numerous advantages:
The DAF-180D also offers a variable displacement, axial-piston motor to minimize overheating problems and improve re-acceleration […]) and a timing-belt drive to eliminate slippage.
Specifications
([PDF version <lien=DOC FCH DAF180D PDF/>])
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DTN group of brushcutter-mowers for graders
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DTN/>]
Description
DTN brushcutter-mowers are roadside-maintenance equipment designed for use on graders. These industrial hydraulic attachments are a vertical-shaft brushcutting head that is mounted on an articulating arm attached to the front of a grader. Since graders are often under-utilized, the DTN brushcutter-mower can be put to work on any available grader. And the faster traveling speeds of graders means that roadside maintenance work can be done up to four times faster than with a mower mounted on a conventional tractor.
DTN mowers use vertical-shaft brushcutting disc technology with two freely rotating knives and a head mounted at the end of an articulating arm, a design that offers considerable advantages:
DTN models also include one or two axial-piston motors, a cooling circuit, and an electric-hydraulic control panel in the operator’s cab.
DTN brushcutter-mowers for graders were previously marketed under the names BM Super Cut, BM Super Cut II and Gridz by the original manufacturer located in Castlegard, BC, Canada more info….
There are three models of the DTN brushcutter-mowers: one with a 1,2 m (4-ft) brushcutting head, another with a 1,5 m (5-ft) head, and a third with a patented double head providing a total cutting width of 2,4 m (8-ft).
Specifications
Below are the main specifications for each of the brushcutter-mowers for graders. For detailed information, click on product name.
(tableau début) (specs des différents produits)
Cutting width
Weight
Required hydraulic flow
Required pressure
Typical grader
Maximum tree diameter
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Notes:
DTN-245 brushcutter-mowers for graders
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DTN-245/>]
Description
Features of the DTN-245 brushcutter-mower:
Like other models in the[DTN product group, the DTN-245 uses vertical-shaft brushcutting disc technology with the head mounted on an articulating arm attached to the front of a grader:
The DTN-245 also includes two axial-piston motors, a cooling circuit, and an electric-hydraulic control panel in the operator’s cab.
Specifications
([PDF version <lien=DOC FCH DTN245 PDF/>])
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DTN-155 brushcutter-mowers for graders
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DTN-155/>]
Description
Features of the DTN-155 brushcutter-mower:
Like other models in the DTN product group, the DTN-155 uses vertical-shaft brushcutting disc technology with the head mounted on an articulating arm attached to the front of a grader:
The DTN-155 also includes an axial-piston motor, a cooling circuit, and an electric-hydraulic control panel in the operator’s cab.
Specifications
([version PDF <lien=DOC FCH DTN155 PDF/>])
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DTN-125 brushcutter-mowers for graders
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DTN-125/>]
Description
Features of the DTN-125 brushcutter-mower:
Like other models in the DTN product group, the DTN-125 uses vertical-shaft brushcutting disc technology with the head mounted on an articulating arm attached to the front of a grader:
The DTN-125 also includes an axial-piston motor, a cooling circuit, and an electric-hydraulic control panel in the operator’s cab.
Specifications
([PDF version <lien=DOC FCH DTN125 PDF/>])
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DAV group of vertical-shaft brushcutters for excavators
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DAV/>]
Description
The economical vertical-shaft DAV brushcutters are vegetation control units designed for use on an articulating arm mounted on carriers such as excavators and backhoes. These industrial hydraulic attachments are ideal for brushcutting applications where chipping is not required (land clearing in uninhabited areas, forest road maintenance, recreational trail maintenance, and transmission line and pipeline right-of-way maintenance).
DAV brushcutters use vertical-shaft brushcutting disc technology with two freely rotating knives,a design that provides considerable advantages:
Each DAV model is structurally reinforced for intensive use, and includes a patented disc protector, a device that helps prevent the brushcutting blades from hitting rocks or other hard objects on the ground.
Specifications
Below are the main specifications for each of the brushcutters for excavators. For detailed information, click on product name.
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Cutting width
Weight
Required hydraulic flow
Required pressure
Typical excavator
Maximum tree diameter
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Notes:
DAV-600 brushcutters for excavators
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DAV-600/>]
Description
Features of the DAV-600 vertical-shaft brushcutter:
Like other models in the DAV product group, the DAV-600 uses vertical-shaft brushcutting disc technology with two freely rotating knives:
The DAV-600 is also structurally reinforced for intensive use, and includes a patented disc protector, a fixed device consisting of parallel plates, which:
Specifications
([PDF version <lien=DOC FCH DAV600 PDF/>])
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DAV-510 brushcutters for excavators
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DAV-510/>]
Description
Features of the DAV-510 vertical-shaft brushcutter:
Like other models in the DAV product group, the DAV-510 uses vertical-shaft brushcutting disc technology with two freely rotating knives:
The DAV-510 is also structurally reinforced for intensive use, and includes a patented disc protector, a fixed device consisting of parallel plates, which:
Specifications
([PDF version <lien=DOC FCH DAV510 PDF/>])
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Notes:
DAV-450 brushcutters for mini-excavators
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DAV-450/>]
Description
Features of the DAV-450 vertical-shaft brushcutter:
Like other models in the DAV product group, the DAV-450 uses vertical-shaft brushcutting disc technology with two freely rotating knives:
The DAV-450 is also structurally reinforced for intensive use, and includes a patented disc protector, a fixed device consisting of parallel plates, which:
Specifications
([PDF version <lien=DOC FCH DAV450 PDF/>])
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Notes :
DAV-400 brushcutters for mini-excavators
Description
Specifications
[Image gallery <lien=PAGE GALERIE IMAGES DAV-400/>]
Description
Features of the DAV-400 vertical-shaft brushcutter:
Like other models in the DAV product group, the DAV-400 uses vertical-shaft brushcutting disc technology with two freely rotating knives:
The DAV-400 is also structurally reinforced for intensive use, and includes a patented disc protector, a mobile device consisting of converging plates (star-like shape), which:
Specifications
([PDF version <lien=DOC FCH DAV400 PDF/>])
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History of DENIS CIMAF Inc.
DENIS CIMAF was founded in 1991 after Laurent Denis withdrew from Équipement Denis, the company he founded in 1976. In his departure, he retained the sylvicultural part of the business, which had been created two years before when the French company CIMAF was bought by Équipement Denis.
To improve upon the original French brushcutter design, the essentially inefficient deflector chute was eliminated, and the structure reinforced. The first version of the semi-mobile knife rotor was brought on line, followed by fixed-blade rotors and bolt-on blades a few months later. DENIS CIMAF's leading edge bolt-on blade technology has been patented in the United States and Canada (and a patent is pending in Brazil).
To broaden its product line and visibility, DENIS CIMAF sought new strategic alliances. In 2002, it signed a distribution and development agreement with Produits Forestiers Munger inc. (PFMI), in Quebec, Canada. Then, in 2004, it signed a distribution and representation agreement with Gater Grapple in British Columbia, Canada. Later that year, it granted Gyro Trac, in Quebec, Canada, rights to use its intellectual property in that company's products. Finally, also in 2004, it purchased the brushcutter-mower line for graders from Blackie Machinery, in B.C., Canada.
DENIS CIMAF currently offers four product groups, with each group using either the horizontal shaft rotor or the vertical shaft brushcutting technologies. To stay at the cutting edge of technology, it invests in R&D and international market development, while staying clearly focused on customer needs and developing new ideas for environmental vegetation control solutions. Always at the technical edge of brushcutting.
DENIS CIMAF brushcutting rotor technology
DAH and DAF brushcutter-chippers use a rotor technology developed in-house, a technology that has delivered productivity gains of 50% or more for many of our clients. Included among the many technical advantages of DENIS CIMAF'S rotor technology are:
DENIS CIMAF's rotor technology is now patented in Canada and the United States with a patent pending in Brazil. Also, despite technical advances already made, DENIS CIMAF continues to invest in research and development to further enhance its rotor technology. Watch this site for further developments.
DENIS CIMAF vertical-shaft, brushcutting disc technology
DAV brushcutters and DTN brushcutter-mowers use vertical-shaft disc technology, which thanks to its relatively simple design and limited number of parts, delivers many technical benefits including:
Vertical-shaft discs are however more limited in terms of the types of operations in which they may be used. Attachments with this technology do not chip vegetation during brushcutting operations. They simply cut it, leaving larger pieces of wood on the ground. Projects that require a nicer finish will thus take longer to complete. When used on excavators, debris is deflected sideways but cannot be entirely eliminated, and can in fact be deflected at great speed over long distances. It is not therefore recommended using these units near roads or inhabited areas.
When used under appropriate conditions, products using this technology are incredibly robust and easy to manoeuvre. They are worthwhile alternatives when acquisition and operating costs are major constraints.
One popular brushcutting technology on the market today uses carbide hammer rotors. These units generally consist of a horizontal tube with fixed supports on which steel parts with carbide tips are attached. Carbide hammers deliver high resistance to abrasion, but they are costly and pose two major problems:
It takes considerable power to slash through a tree using these hammer-type rotors, and often an additional power source (motor with dedicated hydraulic pump) is required or users have to settle for a narrower cutting width.
DENIS CIMAF rotors use knives which by comparison are:
With DENIS CIMAF rotors, much less power is required to chip a tree. Cutting down a tree with the sharp end of an axe is after all far easier than using the back end of the axe.
The design of DENIS CIMAF rotors is so efficient that no additional power unit is required on recommended carriers. Also, given the same power requirements, DENIS CIMAF rotors offer a wider cutting width than hammer brushcutters.
One popular brushcutting technology uses rotors with free-swinging blades, also known as flail rotors. This system normally consists of a horizontal shaft on which blades are mounted and swing freely around a horizontal axis. One of the oldest brushcutting technologies, it was introduced with the idea that the freely swinging blades would avoid being seriously damaged whenever they hit hard objects such as rocks.
The initial premise is accurate but does not however take into account the fact that such impacts stress the blade axle, and hence eventually cause serious axle damage. In addition, the knives turn even when the cutting work is being done. When a tree is being chipped, the cutting angle of the blades will change as they hit it some 2000 to 3000 times per minute. And given they are not in optimal position, their performance will suffer.
The blades used in DENIS CIMAF rotors are fixed and the cutting angle remains constant, thereby maximizing their performance.
DENIS CIMAF rotor: Sharpenable blades
DENIS CIMAF rotor blades are unique in their efficiency. But they depend on daily sharpening for peak cutting performance. This is easy to do in a few minutes at the start of each shift. The blades can be kept sharp as new using either an electric grinder or the gas-powered grinder developed by DENIS CIMAF. There's no need to remove the blades for sharpening. They are positioned so that they can be sharpened right on the rotor. And the sharpening gauge that comes with each unit helps to maintain the optimum cutting angle.
DENIS CIMAF rotor: Bolted-on blades
DENIS CIMAF rotor blades are easy to replace. A single nut and bolt holds the blade in place; hence, replacing worn or broken blades is a snap.
DENIS CIMAF rotor: Forged steel blades
When it comes to metals, the ideal is to have steel that delivers maximum resistance to both impact and abrasion. Unfortunately, in most cases, these are diametrically opposed qualities: a steel product that is malleable will wear readily, whereas steel that can withstand abrasion will break easily.
DENIS CIMAF has worked with metallurgists over the years to develop a way of combining these opposing qualities. Tests have been conducted with different types of steel, manufacturing techniques and thermal treatments.
Although a service life of 800 hours per blade is achievable under certain conditions, the average for a blade on an excavator is about 300 hours. For front-mounted units, the service life is closer to 100 hours per blade owing to the blade’s more frequent contact with the ground.
These figures are obviously approximations and depend on a range of factors such as type of terrain, diameter of material and of course the equipment operator. DENIS CIMAF is pursuing its research efforts to further improve the resistance of its blades to impact and abrasion.
DENIS CIMAF rotor: Protective discs
A main focus of DENIS CIMAF’s product development approach is to ensure ease of maintenance. Because welding parts in remote areas is not normally considered to be an easy maintenance procedure, efforts have been made to minimize welding requirements.
To accomplish this, blade holders, which are exposed to direct impacts had to be protected.
Protective discs were therefore integrated into the design to minimize direct impact on the blade holders. Each disc is welded onto the rotor as well as the back of the blade holder, positioned to afford the greatest protection.
In addition to protecting blade holders, the discs limit the size of the material that can be hit every time the rotor turns.
Variable displacement motors: Efficiency and flexibility
The variable displacement motor changes its displacement on demand as the hydraulic pressure changes. The motor is initially adjusted by a technician for a specified speed in terms of optimal hydraulic flow. Under a heavier workload, the pressure will rise and cause the displacement to increase. This change in displacement slows the rotation, increases the torque and brings down the pressure. When the pressure drops below a certain level, the displacement returns to its original position.
The main benefit of this variable displacement system is that it considerably reduces the use of the relief valve. Hence, less heat is produced.
Another advantage is to allow for more rapid re-acceleration. Since torque rises as a result of a load-related drop in speed, the pre-determined rotation speed resumes more quickly when the load eases off.
A piston axial, variable speed motor runs at roughly 95% efficiency, compared with a gear motor, which operates at about 80% efficiency.
DENIS CIMAF brushcutters for graders: History of the DTN
The first model of the brushcutter-mowers for graders now sold by DENIS CIMAF was created in 1993 in British Columbia, Canada. The original idea behind this invention was a desire to make snow removal graders more cost effective by using them in summer for roadside maintenance operations. The powerful, speedy graders turned out to be an ideal platform for brushcutter-mowers.
After several months of discussion with the inventor, an agreement was signed in May 2005. DENIS CIMAF became owner of the rights, brand names and patents for the original BM Super Cut and The Griz product line.
With many other projects on the go at the time, DENIS CIMAF took a couple more months to review the concept and make a few technical improvements to the hydraulic cylinders, structure strenght, hydraulic motors and controls. DTN models, as revised by DENIS CIMAF, are now available for order.
DENIS CIMAF brushcutters for graders: Easy setup
Some grader-mounted roadside maintenance solutions require replacing the grader blade with the brushcutter system. This approach may help give old retired graders a second lease on life, but it is not practical in the case of newer models that are still used for grading.
DTN brushcutter-mowers are front mounted on graders with the central grader blade left in place. The DTN then simply has to be connected to the grader's hydraulic system and control panel to get the most productive roadside maintenance solution up and running. The only other step is that an additional pump may have to be installed to supplement the grader's hydraulic system.
DENIS CIMAF brushcutters for graders: Quick coupler
DTN brushcutter-mowers can be mounted on the front end of a grader with a quick coupler mechanism. The unit can therefore be mounted or removed in about 10 minutes, which makes it easy to shift from grading to roadside maintenance work.
DENIS CIMAF brushcutters for graders: Productive
Graders with DTN brushcutter-mowers offer many advantages over farm tractors:
Vertical-shaft disc: Easy maintenance
Brushcutter disc technology has been around for some time. Whether based on fixed teeth, limited to a single rotary blade, or consisting of a rotary disc with two or more free-swinging blades, vertical shaft brushcutters are technically fairly straightforward. They have the advantage of being less costly, although they may never achieve the productivity of fixed-teeth brushcutters.
These straightforward and universal vertical-shaft brushcutters, available in the DTN and DAV product groups, offer ease of maintenance. The blades are easy to sharpen, and to replace, and any necessary repairs to the main disc drive system are generally easily done.
Vertical-shaft disc: Low operating cost
The vertical shaft brushcutter disc technology used by DENIS CIMAF is not a complicated system. A motor, with its vertically positioned axis, drives a disc with its two attached free swinging blades. Seals are used to reduce oil leakage, joints to reduce mechanical shock, and bearings to ease shaft rotation. With its limited number of simple parts, this technology is generally less costly than horizontal axis DAH and DAF technologies, although the latter offer greater efficiency and productivity.
DENIS CIMAF brushcutters for graders: Stable
Tractors normally used in roadside maintenance work are relatively light in relation to the brushcutter heads mounted on them. The head will readily overturn the tractor with only a slight move sideways.
Graders with DTN brushcutter-mowers on the contrary are exceptionally stable owing to their low centre of gravity and heftier weight. They can move the brushcutter head more than 20 feet sideways, which will clearly cut down on the amount of maneuvering needed.
DENIS CIMAF vertical-shaft brushcutters: Lightweight
With its limited number of components and minimal size, DAV models are lighter than the DAH models. Where the smallest DAH model normally requires at least a 7 to 8 tonne excavator, the smallest DAV model functions on an excavator half the size.
The DAV disc protector: Impacts protection
DAV models have a protective cage around the brushcutter disc. The cage consists of vertical plates that run under the disc. This means that when the brushcutter is on the ground it is resting on the plates, not the disc itself.
This design also minimizes contact between the disc and the ground while the machine is in operation, thereby limiting the risk of impact that may damage either the knives or the disc itself.
The DAV disc protector: The fixed version
Some of the DAV models use protective discs consisting of plates that are parallel to each other as well as the operator’s cab. Debris is deflected sideways, away from the cab and the operator.
The DAV disc protector: The mobile version
The vertical-shaft DAV-400 model has star-shaped disc protector made of converging plates. This mobile protector swings round when it hits an obstacle. The freely moving disc protector allows the brushcutter access to vegetation without having to reposition the carrier, as is often the case with fixed disc protectors.
For safety reasons, a plate is still secured to the brushcutter housing, parallel to the front of the cab. It deflects debris, preventing it from flying toward the operator.
The DAV disc protector: Like an anvil
By limiting the disc’s contact with the ground, the disc protector makes it possible to work the robust DAV brushcutter hard. In addition to brushcutting, it can be used as a support for pushing the carrier when necessary. And it can be used to move stumps, tree trunks and rocks, without any risk of damaging the brushcutter disc.
DENIS CIMAF was granted a canadian patent for its brushcutting-chipping rotor technology in January 2006. Patent number is 2488508. Patent details can be seen on the Canadian Intellectual Property Office's website at this address;
DENIS CIMAF distributes the products of Produits Forestiers Munger Inc. featuring the vertical-shaft brushcutting head technology under the product group DAV. Produits Forestiers Munger was granted a canadian patent for this technology in July 1992. Patent number is 1304587. Details of the patent can be seen on the Canadian Intellectual Property Office's website at this address;
DENIS CIMAF acquired the rights of the articulating brushcutting head for grader technology in May 2005. Erich Penner was granted a canadian patent for this technology in April 1995. Patent number is 2092668. Patent details can be seen on the Canadian Intellectual Property Office's website at this address;
DENIS CIMAF was granted a US patent for its brushcutting-chipping rotor technology in July 2004. Patent number is 6764035. Patent details can be seen on the United States Patent and Trademark Office's website at this address .
DENIS CIMAF distributes the products of Produits Forestiers Munger Inc. featuring the vertical-shaft brushcutting head technology under the product group DAV. Produits Forestiers Munger was granted a US patent for this technology in February 1990. Patent number is 4899522. Details of the patent can be seen on the the United States Patent and Trademark Office's website at this address.
DENIS CIMAF acquired the rights of the articulating brushcutting head for grader technology in May 2005. Erich Penner was granted a US patent for this technology in February 1993. Patent number is 5341629. Patent details can be seen on the the United States Patent and Trademark Office's website at this address.
Other links related to DENIS CIMAF, brushcutting, etc...
The website of the TAME Melaleuca Project, a study on different means to reduce Melaleuca trees population in Southern Florida.
DENIS CIMAF contact information
For more information on our products, do not hesitate to contact us:
Email:
info@deniscimaf.com
Phone:
877-279-2300 (toll free in Canada and USA)
450-548-7007
Fax:
450-548-7008
Street address:
188 de l'Eglise
Roxton Falls QC J0H 1E0
Canada