Cleco 55NL-3T-4 Pneumatic Stall Non-Reversible Angle Nutrunner | 55 Series | Lever Start | 290 RPM | 110 (ft-lbs) Max Torque

When a production fastening job calls for a compact right-angle tool with controlled stall output, the Cleco 55NL-3T-4 pneumatic angle nutrunner delivers up to 110 ft-lbs / 149 Nm max torque for higher-torque assembly work in machinery, vehicle, and industrial production settings. Its stall drive system means the tool reaches torque by stalling against the fastener rather than using a shut-off clutch, while the non-reversible configuration supports forward-only tightening where reverse operation is not required at the station.

Built in the Cleco 55 Series, this lever-start angle nutrunner uses a 1/2" square drive for compatible impact-rated sockets and a 290 RPM free speed for controlled run-down on larger threaded fasteners. The 2.0" head height and 0.9" side-to-center distance help the angle head reach into fixtures, frames, and assembly areas where straight tools or pistol tools may not fit.

Type: Pneumatic Stall Non-Reversible Angle Nutrunner | Brand: Cleco | Model: 55NL-3T-4 | Series: 55 Series | Start Type: Lever Start | Drive Size: 1/2" Square Drive | Max Torque: 110 ft-lbs / 149 Nm | Free Speed: 290 RPM | Length: 16.8" / 425 mm | Weight: 6.4 lbs / 2.9 kg | Head Height: 2.0" / 50 mm | Side to Center: 0.9" / 22 mm | Air Inlet: 1/2" NPT | Minimum Hose I.D.: 1/2" | Air Consumption: 55 SCFM | Bolt Capacity: 9/16" Grade 5 / M14 Grade 9.8

Features:

• Stall-type fastening output supports controlled tightening on production assembly joints where consistent rundown behavior matters.
• Non-reversible forward-only operation is suited to stations dedicated to installation rather than fastener removal.
• Lever start gives the operator controlled actuation while positioning the angle head on the fastener.
• 1/2" square drive accepts compatible sockets for larger assembly fasteners and higher-torque nutrunner work.
• Planetary gearing supports tool speed changes with minimal parts replacement during service.
• Spindle bearings and splined retractable spindles help reduce friction, improve torque repeatability, and support longer tool life.
• Right-angle head configuration improves access around brackets, frames, fixtures, and other obstructions.

Made in USA:

Applications:

• Industrial assembly stations — tightening larger nuts and bolts where a 1/2" square drive angle tool is required.
• Heavy equipment and off-highway manufacturing — fastening frame, bracket, guard, and subassembly hardware in restricted areas.
• Automotive, truck, and trailer production — controlled rundown on larger assembly fasteners where reverse operation is handled separately.
• Machinery and equipment build lines — repetitive fastening on fixtures, housings, supports, and mounted components.
• Plant maintenance tool cribs — replacing or standardizing pneumatic angle nutrunners used in established Cleco 55 Series applications.

FAQs:

• Q: What does stall mean on this Cleco angle nutrunner?
  A: A stall nutrunner reaches torque when the motor stalls against the joint. This differs from a shut-off clutch tool, which automatically shuts off at a preset torque point.
• Q: Is the 55NL-3T-4 reversible?
  A: No. This model is non-reversible and is intended for forward tightening applications. Choose a reversible or collar-reverse model if the workstation requires fastener removal or reverse operation.
• Q: What socket drive does this tool use?
  A: The 55NL-3T-4 uses a 1/2" square drive. Use compatible sockets and follow the plant’s torque and fastening procedure for the joint being assembled.
• Q: What air supply does this nutrunner require?
  A: The catalog lists a 1/2" NPT air inlet, 1/2" minimum hose I.D., and 55 SCFM air consumption. Tool performance data is based on 6.2 bar inlet air pressure at the air inlet tube.
• Q: Is this tool appropriate for general garage or DIY use?
  A: This is a production pneumatic assembly nutrunner, not a general-purpose garage impact wrench. It is best matched to controlled assembly work where the 110 ft-lbs torque rating, angle-head access, and air supply requirements fit the application.

Looking for more information about Cleco Pneumatic Nutrunner? Click here to view the Catalog

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