Torque ReactionArm | Positech Manipulators

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ReactionArm® (torque reaction arm)

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Positech's pneumatic ReactionArm®, a torque reaction arm, absorbs shock, torsional forces and impact force from power tools; therefore, reducing carpal tunnel injury and cumulative trauma disorders. Cumulative trauma injuries cost the United States billions each year. This torque reaction arm reduces injuries to workers' wrists, arms and upper bodies by absorbing the shock of the attached power tool. A power tool mounted on a ReactionArm can easily be moved and positioned throughout the work cell. A variety of styles, capacities and mounting options provide versatility

Advantages

5:1 design factor minimum on all structural components
Main post adjustable friction brake allows the operator to set arm motion for ease of operation
Reduces repetitive shock force to wrists, arms and upper bodies
Pilot operated lock valve on lift cylinder prevents vertical arm movement if sudden loss of air pressure occurs
Minimum Lift Circuit is standard, allowing controlled downward movement
Floor mounted pedestal provided with concrete anchor bolts, mounting hardware and leveling jacks for ease of installation (No grout required)
Full turn-key or integration of customer supplied torque equipment
Parallel linkage is standard to support loads beyond end-of-arm
Does not require air lubricator

Performance

Balance configuration for 'zero gravity' control
Variety of tool holder designs and end joints available or special designs provided
Work tools and stands that are incorporated into the work cell can be provided
Vertical axes brakes available
Pneumatically operated, requires clean dry input pressure
Precision bearings and thrust washers at rotation axes for smooth motion and long life
Middle joint leveling to prevent second arm drift
Remote Start Circuitry available to ensure brakes are engaged prior to vertical torque
Optional bias circuitry allows for operator ease during vertical torque
Standard pistol grip or optional ergonomic twist grip controls
Mounting Options: overhead, trolley, pedestal, wall mount,column, machine or mobile/portable base

Exhaust Assembly

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Truck Engine Flywheel

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Nut Setter

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Product Specifications
Model	Lift Capacity* lbs (kg)	Reach in (mm)	Lift in (mm)	Torque Capacity ft-lbs (N-m)
RA250	20 (9)	36-72 (914-1828)	18 (460)	184 (250)
RA500	45-175 (20-80)	48-96 (1220-2440)	24-42 (610-1070)	369 (500)
RA1000	100-115 (45-52)	99-144 (2520-3658)	42 (1070)	737 (1000)
RA3000	200 (91)	99-144 (2520-3658)	42 (1070)	2212 (3000)
Requires 90 psi (6.21 bar) clean, dry air to operate at rated capacity *Includes payload and tool holder; increasing arm length reduces lift capacity

**To Download PDF of Technical Specification of a Model above, please Click on the Row containing the Model Name.