Hbtorque

PRA Series Pneumatic Torque Reaction Arm | 600-2000 Nm

Name: PRA Series Pneumatic Torque Reaction Arm | 600-2000 Nm
Brand: Hbtorque

$7,900.00 USD

Sale Engineered to Order

Need a PRA reaction-arm recommendation? Send the tightening-tool brand and model, normal and maximum torque, tool weight, bolt coordinates, required reach and workstation layout. Request an engineered configuration.

PRA Series Pneumatic Balance Joint Torque Reaction Arm

The GAMITT PRA Series is a floor-mounted pneumatic balance joint reaction arm for industrial powered fastening. It supports the tool and transfers tightening reaction torque into the arm and mounting structure, helping reduce operator strain during repetitive assembly.

PRA Series Specifications

Model	Load range	Vertical stroke	Working radius	Maximum torque
PRA-600	0-50 kg	0-1600 mm	1000-3000 mm	600 Nm
PRA-1000	0-50 kg	0-1600 mm	1000-3000 mm	1000 Nm
PRA-2000	0-50 kg	0-1600 mm	1000-3000 mm	2000 Nm

Movement and Tool Support

Articulated manual-traction design provides a large working envelope around the fastening station.
Pneumatic balancing supports tools weighing up to 50 kg within the configured operating range.
Multiple rotary joints provide flexible access to different bolt positions.
The tool-hanging module is engineered to match the actual electric or pneumatic nutrunner geometry.

Mounting Configurations

PRA: standard floor-mounted configuration.
MPRA: mobile-base configuration for stations requiring relocation.
SPRA: overhead-track configuration for expanded line coverage.
Custom: mounting base, track and tool interface can be designed around the workstation.

Optional Position and Process Control

Reaction arms can be configured with encoders for tightening-position verification and alarms. Project-specific options can include barcode or QR-code scanning, communication with compatible intelligent tightening tools, industrial-computer display and storage, and MES data upload.

Typical Applications

Automotive component assembly, gearbox and axle fastening, heavy equipment production, structural bolting and other repeatable high-torque operations using powered nutrunners.

Information Required for Selection

Tightening-tool brand, model, output geometry and drawing
Normal and maximum tightening torque
Tool weight
Bolt positions, orientation and fastening sequence
Required reach, working height and vertical travel
Workbench dimensions, mounting location and available air supply
Any encoder, position-control, barcode, MES or data-traceability requirements

Send your application details for a PRA configuration and quotation.

Frequently Asked Questions

Which PRA model should I choose?

Select the capacity above the application's maximum tightening torque: PRA-600 up to 600 Nm, PRA-1000 up to 1000 Nm, or PRA-2000 up to 2000 Nm. Final selection also depends on tool weight, reach, bolt locations and mounting structure.

Is the tightening tool included?

The PRA system is engineered to support a compatible customer-specified powered tightening tool. Confirm the tool brand, model and output geometry so the correct hanging interface can be designed.

Can the arm verify bolt positions?

Yes. An encoder-equipped configuration can be engineered for position verification, tightening-sequence control, alarms and production-data integration.