Rack-N-Pinion-SA - Rollmaster w/Gantry

Pioneer Rack-N-Pinion Tarp System - The #1 Roll Off System!

RP4500SARG Rack-N-Pinion Tarp System

Overview:
The RP4500SARG is a fully adjustable, hydraulic-powered tarp system designed for tandem or tri-axle hooklift and roll-off trucks with 20 to 50 yard containers up to 24 feet long. Known for its high configurability, low-maintenance design, and durable construction, it has been the industry standard for decades.

Key Features:

• Hydraulic-powered telescoping arms, 3/16 inch A500B steel

• Nitrited external cylinders for easy maintenance

• Adjustable gantry tower: vertical range 60 inches to 96 inches

• Uses truck’s existing PTO hydraulic system

• 5-year warranty on system (tarp excluded)

• Rack-and-pinion pivot system for forward/backward control, synchronized pivot arms, and precise tarp deployment

• Reinforced base arms and “C” channel for increased leverage and durability

• Requires 10 to 12 inches of space behind the cab

Tarp Included:

• 114 inch Heavy-Duty Mesh Tarp

• Reinforced at front and back with wear-resistant, urethane-coated nylon

• Optional replacements:

  • 8 feet × 28 feet Multi-Mesh Tarp

  • 9 feet 6 inches × 28 feet Reinforced Black Mesh Tarp

Technical Details:

• Telescoping arms cover containers up to 8 feet high and 24 feet long

• Arm stroke: 36 inches (nitrited cylinders)

• External cylinders allow easy access and maintenance

• Strengthened rack-and-pinion pivot system ensures precise control and longer service life

Parts List (RP4500SARG):

• Spring-Loaded Roller: H7002C

• Arm Pivot Pin Kit: A3881KIT

• Arm Glide Cylinders, 36 inch Stroke: HR4752

• Gantry Lift Cylinder, 36 inch Stroke: HR4520

• 3-Spool Cover Control Valve: HR4535A

• Roll Base with Rest: HR4505-2

• Complete Gantry Assembly: HR4511

• L-Shaped Chassis Mounting Tubes: HR4723

• Complete Driver Side Arm Assembly: HR4766L

• Complete Passenger Side Arm Assembly: HR4766R

• Driver Side Mounting Bracket Assembly: HR4762A

• Passenger Side Mounting Bracket Assembly: HR4761A

• Additional Replacement Parts (standard replacement tarp: HR4759)