Cleco 75RNL-3V-4 Pneumatic Stall Collar Reverse Angle Nutrunner | 75 Series | Lever Start | 190 RPM | 155 (ft-lbs) Max Torque

When higher-torque production fastening requires right-angle access, the Cleco 75RNL-3V-4 pneumatic stall collar reverse angle nutrunner delivers controlled socket-driven rundown for assembly stations, machinery builds, and industrial MRO work. This 75 Series lever-start model operates at 190 RPM, giving operators a measured fastening speed for larger fasteners and higher-resistance joints. With up to 155 ft-lbs / 210 Nm max torque, it is built for controlled fastening applications where repeatability and joint setup matter more than impact-style breakaway force.

The stall drive system (a pneumatic torque-control method where the motor stops as joint resistance reaches the tool’s output) provides straightforward torque control when air pressure, joint condition, and verification procedures are properly managed. A 1/2" square drive accepts compatible sockets, while the collar reverse function lets the operator back out fasteners, correct alignment, or complete rework without switching tools. The right-angle head improves access around frames, brackets, fixtures, housings, and other obstructions where inline nutrunners may not seat cleanly.

Type: Pneumatic Stall Collar Reverse Angle Nutrunner | Series: 75 Series | Start Type: Lever Start | Drive Size: 1/2" Square Drive | Max Torque: 155 ft-lbs / 210 Nm | Free Speed: 190 RPM | Length: 19.4" / 492 mm | Weight: 11.4 lbs / 5.16 kg | Head Height: 2.5" / 64 mm | Side to Center: 1.1" / 28 mm | Air Consumption: 70 SCFM | Air Inlet: 1/2" NPT | Min. Hose I.D.: 5/8"

Features:

• Stall-type fastening provides simple pneumatic torque control for higher-torque production assembly applications.
• Collar reverse operation allows the tool to be reversed for fastener removal, alignment correction, and rework.
• 190 RPM free speed supports controlled rundown on larger fasteners and higher-resistance joints.
• 1/2" square drive accepts compatible sockets for bolt and nut assembly work.
• Right-angle head improves access around frames, housings, brackets, production fixtures, and other confined fastening points.
• Heavy duty motor, gearing, and angle head construction support regular use in industrial assembly environments.
• Torque can be adjusted by adjusting air pressure, allowing the fastening setup to be matched to the joint when properly tested.
• Torque reaction plate is supplied with 75 Series models to help manage reaction force during higher-torque fastening.

Made in USA:

Applications:

• Heavy equipment assembly — tightening socket-driven fasteners on frames, brackets, guards, covers, and mounted components.
• Truck, trailer, and off-road equipment production — controlled fastening on medium-to-high torque joints with limited tool access.
• Industrial machinery manufacturing — installing bolts on machine bases, housings, fixture-mounted assemblies, and structural subassemblies.
• Plant maintenance and MRO — removing and reinstalling fasteners during equipment rebuilds, line changeovers, and repair work.
• Agricultural equipment production — reaching fasteners around welded frames, panels, axle structures, and mechanical assemblies.
• Production tool crib standardization — supporting workstations that require reversible pneumatic angle nutrunners and verified torque setup.

FAQs:

• Q: What does “stall” mean on the Cleco 75RNL-3V-4?
  A: Stall means the tool runs the fastener down until resistance in the joint causes the motor to stop. It is commonly used for pneumatic assembly where torque output is controlled through air pressure, joint consistency, and torque verification.
• Q: Is this tool reversible?
  A: Yes. The collar reverse design allows the operator to reverse the tool when needed, which helps with fastener removal, part alignment, and rework during assembly.
• Q: Why does the 75 Series include a torque reaction plate?
  A: Higher-torque nutrunners can create noticeable reaction force at the handle or tool body. The supplied torque reaction plate helps manage that reaction force when the tool is properly set up for the application.
• Q: How is this different from an impact wrench?
  A: The 75RNL-3V-4 is a controlled assembly nutrunner, not a hammering impact tool for breaking loose seized fasteners. Use it for verified fastening processes; choose an impact wrench for breakaway removal work.
• Q: Should torque be checked after adjusting air pressure?
  A: Yes. Air pressure directly affects stall tool output, so final torque should be checked with an approved torque audit method whenever setup conditions are changed.

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Need help selecting the correct Cleco Pneumatic Nutrunners for your application? Please call (800) 608-5210 or email info@intlairtool.com