Cleco 55PTHH403 Shut-Off Model Pneumatic Pulse Tool | H-Series | 4,000 RPM | 3/8" Square Drive | 22.1 - 40.6 (ft-lbs) Torque Range

Built for higher-torque production fastening where consistency and low reaction force are both important, the Cleco 55PTHH403 H-Series shut-off pneumatic pulse tool delivers a 22.1 - 40.6 ft-lbs torque range for medium-to-higher torque assembly work. Its hydraulic pulse mechanism (a sealed pulse unit that delivers torque through short hydraulic impulses) helps reduce the sudden wrist reaction associated with conventional impact tools, while the shut-off system stops the tool at the preset torque to support repeatable results across repeated fastening cycles.

With a 3/8" square drive, 4,000 RPM free speed, and 15.9 SCFM air consumption, the 55PTHH403 is a practical choice for assembly stations that need socket-drive compatibility without moving to a larger, slower tool. The H-Series platform combines external torque adjustment, external speed control, a torque signal port, and reversible operation, giving manufacturing teams a controlled pneumatic fastening option for 30 - 55 Nm applications.

Type: Pneumatic Pulse Tool | Series: H-Series | Model: 55PTHH403 | Configuration: Pistol Grip Shut-Off | Drive Type: 3/8" Square Drive | Torque Range: 22.1 - 40.6 ft-lbs / 30 - 55 Nm | Free Speed: 4,000 RPM | Weight: 2.54 lbs / 1.15 kg | Air Inlet: 1/4" NPT | Recommended Hose I.D.: 1/2" | Air Consumption: 15.9 SCFM | Rated Air Pressure: 87 PSI / 6 bar

Features:

• Inertia shut-off helps stop the tool at the preset torque for repeatable fastening in production environments.
• Hydraulic pulse mechanism reduces reaction force compared with many conventional impact tools used for similar fastening tasks.
• Efficient 3-chamber air motor supports fast rundown while keeping air consumption controlled.
• External torque adjustment allows operators or tool technicians to set torque without opening the tool housing.
• External speed control helps tune the tool for different joint conditions and assembly requirements.
• Torque signal port is included on pistol grip models for process monitoring or line-control feedback.
• Adjustable pulse unit volume supports serviceability of the pulse mechanism.
• Reversible operation and oilless blades support routine assembly use with reduced lubrication-related maintenance inside the motor.

Tech Tip: To increase tool performance, extend tool life, and lessen repair costs, use it with a Filter-Regulator-Lubricator FRL)

Applications:

• Automotive and transportation assembly — tightening suspension brackets, structural supports, covers, and medium-to-larger fasteners within the tool’s torque range.
• Industrial equipment manufacturing — fastening frames, guards, access panels, motor mounts, and mechanical subassemblies using a 3/8" square drive socket setup.
• Appliance and machinery production — controlled rundown on threaded fasteners where shut-off repeatability is preferred over manual impact-wrench timing.
• Assembly line tooling programs — standardizing pneumatic shut-off pulse tools for stations that require reduced reaction force and consistent torque control.
• Maintenance and repair benches — controlled tightening on fixtures, shop-built assemblies, and service components where over-tightening is a concern.

FAQs:

• Q: What makes the Cleco 55PTHH403 different from lower-torque H-Series models?
  A: The 55PTHH403 covers a higher 22.1 - 40.6 ft-lbs torque range, making it better suited for fasteners that need more clamp load than the 35PTHH403. It keeps the same 4,000 RPM free speed and 3/8" square drive format for fast socket-driven assembly work.
• Q: What does “shut-off” mean on this pulse tool?
  A: Shut-off means the tool stops when it reaches the preset torque. This helps improve fastening repeatability and reduces the need for the operator to judge torque by feel or rundown time.
• Q: What sockets fit the 55PTHH403?
  A: This model uses a 3/8" square drive, so it accepts compatible 3/8" drive impact-rated sockets. Always match the socket and extension rating to the torque requirement and fastener size.
• Q: Is this tool used like an impact wrench?
  A: It is used for fastening with sockets, but it is not primarily a breakaway impact wrench. The 55PTHH403 is intended for controlled assembly tightening within its torque range, especially where reduced reaction force and repeatable shut-off are important.
• Q: What air supply does the 55PTHH403 need?
  A: Cleco lists air consumption at 15.9 SCFM with tool performance rated at 87 PSI / 6 bar. Use properly sized hose, fittings, and filtration so the tool receives stable pressure during repeated production cycles.

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