Promac R Series: Rotary Disk Forestry Cutter - XM Disk
Promac Equipment’s R Series: Rotary Disk Forestry Cutter is wildland and forestry contractors’ premium vegetation management and clearing option for 15-30+ ton excavators. The no-nonsense design has been developed for 30+ years and has not strayed from a focus on durability, in-field serviceability, versatility and speed. You can find this attachment putting in serious acres in western mountains and rangelands up and down North America.
About the Product
Product Features
Available in 36” and 52” inch cutting widths, the R-Series’ three disk options range from hinged cutting blades large enough to tackle mature trees, to a mulching disk which can both cut and offer a powerful top-down mulching action – each allowing variety in application type and tooling costs. Promac’s most robust bearing drive system with direct drive and shock coupler is powered by bent axis piston 80cc or 107cc motor options allow for fast continued use while against large tough trees. The “bullet proof” design, completely encased in 100,000 PSI steel guarantees bent, broken or dented framing is out of question. A robust, built-in rake/pusher pad combination expands your ability to manage fallen brush and your carrier’s maneuverability. The easy-to-remove motor cap and panels to thoughtful service areas means faster maintenance and maximum up time. Some notable application types for this attachment are emergency response, wildfire fuels management, and right-of-way maintenance.
- Forestry-Proven Bearing System
- Flat-Top Bracket
- Direct Drive w/ Performance Coupler
- Integrated Pusher/Pivot Point
- GP, SM, or XM Disk Types (optional)
- Quick-Change or Pin-Type Bracket (optional)
- Bolt-On Inlet Chute (optional)
- Bolt-On Hinged Access Guard (optional)
- Enclosed Motor Housing
- Easily Accessible Service Points
- Easily Change Between Disks
Product Specs
Model
R36XM107H
R36XM107H-C
R52XM107H
R52XM107H-C
Dimensions
81"x 55"x 63"
81"x 55"x 63"
96"x 70"x 63"
96"x 70"x 63"
Excavator Size
15-20+ tons
15-20+ tons
20-30+ tons
20-30+ tons
Cut Width
36"
36"
52"
52"
Avg. Flow Range
32-39 GPM
32-39 GPM
42-52 GPM
42-52 GPM
Min. Weight
2300 lbs (w/ Flat Top Bracket)
2700 lbs (Estimated w/ Full Bracket)
3000 lbs (w/ Flat Top Bracket)
3400 lbs (Estimated w/ Full Bracket)
Min. Pressure
4000 psi
4000 psi
4000 psi
4000 psi
Std. Motor Size
80 cc
80 cc
107 cc
107 cc
Std. Motor Type
Bent Axis Piston
Bent Axis Piston
Bent Axis Piston
Bent Axis Piston
Sugg. Disk Speed
1800 RPM
1800 RPM
1800 RPM
1800 RPM
Promac Equipment
Forged in the heart of western forestry over five decades, Promac Equipment designs and manufactures premium mulchers, masticators, and cutters built to thrive in the toughest vegetation management conditions. Known across the industry for uncompromising quality and performance, Promac Equipment products are engineered to keep operators working—not fixing. No gimmicks. No cheap features. Just rock-solid reliability that stands up to the harshest environments. Proudly based and built in British Columbia, Canada—where serious forestry demands serious equipment.

Our warranty policy lasts 30 days. If 30 days have passed since your purchase, we can’t offer you a full refund or exchange.
Warranty PolicyAt Forge Attachment Company, we strive to provide efficient and reliable shipping for all our heavy equipment attachments. Please read the following shipping policy to understand how your order will be processed and delivered.
Shipping PolicyWe understand that sometimes products may not meet expectations or requirements. To ensure a positive shopping experience, we’ve outlined our Refunds & Returns Policy.
Returns Policy