Bush Hog® Boom Mowers and PT5
Extend your reach and productivity!
RMB1445, RMB1660, RMB1865 and Powertrim PT5 provide the ultimate in versatility.
Bush Hog’s rugged, tractor-mounted boom mowers are designed to trim trees, brush or hedges, and mow behind guardrails, over fences, down embankments and around ponds. With four models reaching 11 to 18-feet from the tractor centerline, there’s almost no limit to what you can accomplish. They’re easy to operate and built to provide years of dependable service.
NOTE: RMB models are to be used on tractors equipped with cabs only and protective screen material must be installed when using rotary mower heads.
Notes: Unit(s) shown equipped with certain selections and options. Please consult with your local Bush Hog dealer for available configurations.
Construction Features
- All RMB Boom Mowers are equipped with hydraulic or mechanical breakaways.
- RMB models offered with optional accessories such as a lift float kit and skid kit on certain models.
Product Features
FLAIL HEAD Attachment for RMB series
1-2″ Cutting Capacity
39-47″ Cutting Width
CUTTER BAR Attachment for RMB series
1-1/4″ Cutting Capacity
59″ Cutting Width
All RMB models offer self contained, fully independent hydraulic systems with twin pumps for optimum cutting performance.
The PT5 is powered by the tractor’s hydraulic system requiring only 3.7 gal/min flow to operate the unit.
ROTARY HEAD Attachment for RMB series
4″ Cutting Capacity
60″ Cutting Width
POWERTRIM PT5:
3/4” Cutting Capacity
59” Cutting Width
Maximum Horizontal Reach(A) from 11’5″ to 18’1″
Maximum Vertical Reach(D) from 10’2″ to 22″4″
Literature & Manuals
Good for Tractors rated 40hp or under
Specifications
Boom Mowers
RMB1445-1
RMB1660-1
RMB1865-1
PT5-2
Tractor Engine HP / Weight (Min.)
See Head Selection Chart Below; Varies Based on Head Choice
Tractor PTO
540
540
540
N/A
Machine Weight w/Flail*
1220-lbs.
2403-lbs.
2470-lbs.
397-lbs.
Hydraulic System
Totally Independent (Self-Contained Hydraulic System, Pump Powered by Tractor PTO)
Totally Independent (Self-Contained Hydraulic System, Pump Powered by Tractor PTO)
Totally Independent (Self-Contained Hydraulic System, Pump Powered by Tractor PTO)
Open Center Hydraulics System (Closed Center Kit Avail.). Tractor Remote Outlet. 3.7-5.6 GPM Flow Range Flow Control Valve Kit Standard
Attachment Method
Cat. I/II, 3 Pt. Mount
Cat. I/II, 3 Pt. Mount
Cat. I/II, 3 Pt. Mount
Cat. I/II, 3 Pt. Mount
Controls
Cable Controlled Quick Detach (QD)
Cable Controlled Quick Detach (QD)
Cable Controlled Quick Detach (QD)/Electronic Controls (XTC)
Cable Controlled Hydraulic Remotes
Max Reach, Horizontal (A)
14-feet 1-inch
16-feet 5-inches
18-feet 1-inch
11-feet 5-inches
Max Reach, Horizontal (B)
13-feet 2-inches
14-feet 6-inches
16-feet 1-inch
7-feet 2-inches
Max Height, Horizontal (C)
13-feet 5-inches
15-feet 9-inches
17-feet 5-inches
5-feet 7-inches
Max Height, Vertical (D)
13-feet 9-inches
20-feet 8-inches
22-feet 4-inches
10-feet 2-inches
Max Depth, 45° (E)
5-feet 4-inches
7-feet 3-inches
8-feet 2-inches
4-feet 6-inches
HEAD SELECTION CHART
Flail Head
RMB1445-1
RMB1660-1
RMB1865-1
PT5-2
Tractor Engine HP / Weight (Min.)
45 HP/4410-lbs.
60 HP/6614-lbs.
85 HP/9920-lbs.
NOT AVAILABLE FOR USE ON PT5
Rotor / Knife Type
Super Cut/Universal
Super Cut / F91 Competition knives or Multi-Cut / Competition
Super Cut / F91 Competition knives or Multi-Cut / Competition
N/A
Typical Application
Grass, Light Brush
Hedge Cutting, Grass
Hedge Cutting, Grass
N/A
Cutting Capacity
1-inch Diameter
1 1/2-inch Diameter
2-inches Diameter
N/A
Cutting Width
39-inches
47-inches
47-inches
N/A
Rotary Head
RMB1445-1
RMB1660-1
RMB1865-1
PT5-2
Tractor Engine HP/Weight (Min.)
Not Available for use on RMB1445
85 HP/7614-lbs.
85 HP/9920-lbs.
NOT AVAILABLE FOR USE ON PT5
Typical Application
N/A
Grass/Brush
Grass/Brush
N/A
Cutting Capacity
N/A
4-inches Diameter
4-inches Diameter
N/A
Cutting Width
N/A
60-inches
60-inches
N/A
* For Rotary Head, protective screen material must be installed.
Cutter Bar
RMB1445-1
RMB1660-1
RMB1865-1
PT5-2
Tractor Engine HP/Weight (Min.)
45 HP/4410-lbs.
60 HP/6614-lbs.
85 HP/9920-lbs.
15 HP/1212-lbs.
Cutter Type
Sickle Bar
Sickle Bar
Sickle Bar
Sickle Bar
Cutting Capacity Diameter
1 1/4-inch Diameter
1 1/4-inch Diameter
1 1/4-inch Diameter
3/4-inch Diameter
Cutting Width
59-inch
59-inch
59-inch
59-inch
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