Cleco 55NL-2T-4 Pneumatic Stall Non-Reversible Angle Nutrunner | 55 Series | Lever Start | 210 RPM | 140 (ft-lbs) Max Torque

When an assembly station needs higher stall torque in a right-angle fastening tool, the Cleco 55NL-2T-4 pneumatic angle nutrunner delivers up to 140 ft-lbs / 190 Nm max torque for controlled tightening on larger production fasteners. Its stall operation means torque is reached when the motor stalls against the joint, while the non-reversible configuration prevents accidental reverse operation in dedicated tightening applications.

Part of the Cleco 55 Series, this lever-start nutrunner combines a 1/2" square drive with 210 RPM free speed for slower, higher-torque rundown compared with faster models in the same family. The compact angle-head layout helps operators access fasteners around frames, brackets, fixtures, and other obstructions where inline or pistol-grip tools may not reach cleanly.

Type: Pneumatic Stall Non-Reversible Angle Nutrunner | Brand: Cleco | Model: 55NL-2T-4 | Series: 55 Series | Start Type: Lever Start | Drive Size: 1/2" Square Drive | Max Torque: 140 ft-lbs / 190 Nm | Free Speed: 210 RPM | Length: 16.8" / 425 mm | Weight: 6.4 lbs / 2.89 kg | Head Height: 2.0" / 50.01 mm | Side to Center: 0.9" / 22 mm | Air Inlet: 1/2" NPT | Minimum Hose I.D.: 16 mm | Air Consumption: 26 l/sec

Features:

• Stall fastening output supports controlled tightening by allowing torque to be adjusted through air pressure.
• Non-reversible operation helps prevent accidental reverse use at forward-only assembly stations.
• Lever start allows controlled tool engagement as the operator positions the angle head on the fastener.
• Heavy duty motor, gearing, and angle head support production fastening applications where higher torque is required.
• 1/2" square drive accepts compatible sockets for larger nuts and bolts used in machinery and equipment assembly.
• Right-angle head configuration helps reach fasteners positioned close to brackets, frames, housings, or fixture walls.
• Tool performance data is based on 6.2 bar inlet air pressure measured at the air inlet tube.

Made in USA:

Applications:

• Industrial assembly lines — tightening larger fasteners where a compact 1/2" square drive angle nutrunner is required.
• Heavy truck, trailer, and off-highway equipment production — fastening brackets, supports, frames, and subassemblies in restricted spaces.
• Machinery manufacturing — controlled rundown on housings, guards, mounts, and fabricated components.
• Agriculture and lawn equipment assembly — installing structural and drive-system hardware where angled access improves tool positioning.
• Maintenance and production tool cribs — standardizing pneumatic stall nutrunners for stations that do not require reverse operation.

FAQs:

• Q: What does stall operation mean on the Cleco 55NL-2T-4?
  A: Stall operation means the air motor stalls against the joint as torque builds. This style is commonly used where torque can be managed through air pressure and process control rather than an automatic shut-off clutch.
• Q: Is the 55NL-2T-4 reversible?
  A: No. This is a non-reversible model intended for forward tightening. If the workstation requires reverse operation for removal or rework, select a reversible Cleco angle nutrunner model instead.
• Q: Why choose the 210 RPM model instead of a faster 55 Series nutrunner?
  A: The 210 RPM speed provides slower rundown with higher torque capacity, making it better suited to larger fasteners and higher-torque joints than faster, lower-torque models.
• Q: What air supply should be used with this tool?
  A: The tool data is based on 6.2 bar inlet air pressure at the air inlet tube. The listed air inlet is 1/2" NPT, with a 16 mm minimum hose I.D. and 26 l/sec air consumption.
• Q: Is this tool meant for general automotive repair?
  A: No. The 55NL-2T-4 is a production pneumatic assembly nutrunner, not a general-purpose impact wrench. It is best used in controlled fastening stations where the 140 ft-lbs torque rating and non-reversible angle design match the application.

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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