Cleco 55RNAL-2-4 Inline Reaction Bar Pneumatic Nutrunner | 55 Series | Lever Start | 270 RPM | 30 - 67 (ft-lbs) Torque Range

When controlled fastening needs more than a standard air wrench, the Cleco 55RNAL-2-4 inline reaction bar pneumatic nutrunner delivers repeatable torque for production assembly, maintenance fastening, and high-torque rundown work. This 55 Series lever-start tool uses a Clecomatic shut-off clutch, meaning the tool automatically stops at the set torque to help improve fastening consistency. With a 30 - 67 ft-lbs torque range and 270 RPM free speed, it is built for assemblies that require controlled tightening rather than impact-style breakaway force.

The inline configuration keeps the tool aligned with the fastener, while the supplied reaction bar helps absorb torque reaction, which is the twisting force felt by the operator when higher torque is applied. A 1/2" square drive, 55 SCFM air consumption, and 1/2" air inlet make this nutrunner a fit for compressed-air production environments where repeatability, torque control, and proper reaction management matter.

Type: Inline Reaction Bar Pneumatic Nutrunner | Series: 55 Series | Model: 55RNAL-2-4 | Start Type: Lever Start | Reverse Type: Collar Reverse | Clutch Type: Clecomatic Shut-Off Clutch | Torque Range: 30 - 67 ft-lbs / 46 - 91 Nm | Free Speed: 270 RPM | Output Drive: 1/2" Square Drive | Length: 16.1" | Weight: 6.5 lbs | Air Consumption: 55 SCFM | Air Inlet: 1/2" | Minimum Hose I.D.: 5/8" | Standard Equipment: Operating instructions and service manual, aluminum torque reaction bar

Features:

• Durable Clecomatic shut-off clutch supports repeatable torque control by stopping the tool when the preset torque is reached.
• Inline reaction bar configuration helps manage torque reaction during higher-torque fastening operations.
• Lever start provides straightforward tool activation for production and assembly workstations.
• Collar reverse allows direction change at the tool for tightening and removal tasks.
• Heavy-duty Cleco motor, gearing, and clutch construction support repeated use in compressed-air assembly environments.
• Planetary gearing allows tool speed changes with minimal parts service and replacement.
• Heavy-duty spindle bearings and splined retractable spindle design help reduce friction, improve torque repeatability, and prolong tool life.
• Aluminum torque reaction bar is supplied with the tool for proper reaction management.

Made in USA:

Applications:

• Production assembly lines fastening medium-to-high torque joints where shut-off clutch repeatability is required.
• Heavy equipment and off-highway machinery assembly involving bolts, brackets, housings, and structural subassemblies.
• Automotive, truck, and trailer manufacturing stations where controlled rundown torque is more important than impact force.
• Industrial MRO and plant maintenance fastening where operators need a reaction bar to manage tool torque safely and consistently.
• Aerospace and general manufacturing work cells using pneumatic nutrunners for repeatable threaded assembly.

FAQs:

• Q: What does a reaction bar do on this Cleco nutrunner?
  A: The reaction bar helps absorb torque reaction, which is the twisting force created when the tool reaches higher torque. This helps the operator control the tool and supports more stable fastening during repeated assembly work.
• Q: Is the Cleco 55RNAL-2-4 an impact wrench?
  A: No. This is a pneumatic nutrunner with a Clecomatic shut-off clutch. It is used for controlled tightening to a target torque range, while an impact wrench is primarily used for high-force fastening and breakaway work.
• Q: What torque range does this model cover?
  A: The 55RNAL-2-4 covers 30 - 67 ft-lbs, or 46 - 91 Nm. That range is best matched to assembly joints that require repeatable tightening within this torque window.
• Q: What air supply does this nutrunner require?
  A: The manufacturer-listed air consumption is 55 SCFM, with a 1/2" air inlet and 5/8" minimum hose I.D. Use a properly sized compressed-air system to maintain tool speed and torque consistency.
• Q: What is a Clecomatic shut-off clutch?
  A: A Clecomatic shut-off clutch is a torque-control clutch that shuts the tool off when the preset torque is reached. This helps reduce over-tightening and supports repeatable fastening on production joints.

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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