CP6641 1 inch pneumatic torque multiplier with 4100 Nm capacity and heavy-duty reaction arm for industrial bolting

CP6641 - 1" Stall Torque Pneumatic Nutrunner (4100 Nm)

Unmatched Power for the Most Demanding Heavy-Duty Bolting

The CP6641 represents the highest torque capacity in the CP66 series, engineered specifically for extreme bolting requirements in Heavy Industry, Power Generation, and Oil & Gas. As a premier solution in our lineup of Pneumatic Torque Multipliers, this 1" nutrunner provides a formidable maximum torque output of 4,100 Nm (3,020 ft.lbf) for large-diameter fasteners while maintaining signature precision.

Designed to replace cumbersome manual methods and high-vibration impact wrenches, the CP6641 utilizes a non-shut-off stall system for smooth, continuous rotation. Despite its massive power, the tool is built with a lightweight composite housing and advanced vibration-dampening technology (<2.5 m/s²), ensuring that even the toughest jobs are manageable for the operator.

Key Benefits

Maximum Torque Output

Delivers up to 4,100 Nm of controlled torque for mission-critical industrial joints.

Precision and Repeatability

Achieves ±5 % accuracy when paired with an industrial FRL ATC pack, ensuring every bolt meets safety specifications.

Enhanced Operator Safety

The low-vibration vane motor and swiveling pistol handle reduce long-term physical strain and the risk of HAVS (Hand-Arm Vibration Syndrome).

Industrial Durability

As with all high-end Torque Multipliers, the CP6641 features a heavy-duty 70 spline type and 1" square drive for the harshest field environments.

Technical Specifications

Feature	Imperial	Metric
Max Torque (Forward/Reverse)	3,020 ft.lbf	4,100 Nm
Min Torque	738 ft.lbf	1,000 Nm
Free Speed	10 rpm	10 rpm
Accuracy	±5%	±5%
Weight (With Reaction Arm)	23.8 lb	10.8 kg
Output Drive	1" Sq.	1" Sq.
Air Consumption (Free Speed)	65 cfm	31 l/s
Vibration Level	<9.5 ft/s²	<2.9 m/s²
Spline Type	70	70
Air Inlet Thread	3/8" NPT	3/8" NPT
Max Working Pressure	90 psi	6.3 bar

Design & Functional Excellence

High-Capacity Drive

Equipped with a 1" Square drive and a hole retainer for maximum socket security during high-load operations.

Superior Reaction Management

Includes a heavy-duty S-type reaction bar to safely manage the 4,100 Nm counter-force.

Refined Control

A one-finger reverse mode and trigger-start system allow for intuitive operation even in protective gear.

Thermal Protection

The composite main material ensures the tool remains comfortable to handle in extreme temperatures.

When standard tools reach their limit, the CP6641 takes over. It is the definitive choice for professionals who require maximum power without sacrificing accuracy or safety.

Contact TorqLite today for expert consultation, technical support, or to receive a custom quote for your bolting operations.

Related Products

CP6613

CP6613 features a vane-type motor and a non-shut-off stall system engineered for consistent torque delivery. It delivers strong precision performance in tight or repetitive bolting tasks while minimizing operator strain during extended use.

View CP6613

CP6626

Engineered with a stall-type motor and lightweight composite housing to deliver exceptional performance during long maintenance shifts. CP6626 delivers reliable performance in high-load applications while improving operator control and workflow efficiency.

View CP6626

Frequently Asked Questions: CP6641 Pneumatic Nutrunner

1How do I use the CP6641 pneumatic torque wrench safely?

Safety is critical when handling 4,100 Nm of torque. Always ensure the S-type reaction arm is securely braced against a solid neighboring fastener or structural point to counter the rotational force. Keep hands and fingers completely clear of the "pinch point" between the reaction arm and the anchor point during operation. Additionally, because the CP6641 is a stall-type tool, you must use an ATC (Air Torque Control) pack to set the pressure; never exceed the 90 psi (6.3 bar) maximum, as over-pressurizing can lead to tool damage or fastener failure.

2Where can I buy a CP6641 pneumatic torque wrench in the US?

High-capacity tools like the CP6641 are best purchased directly from TorqLite or an authorized industrial bolting specialist. Buying manufacturer-direct ensures you receive the essential Torque-to-Pressure calibration chart specific to your unit, along with access to expert technical support. We also provide professional recalibration services and replacement parts to ensure your tool remains accurate and safe for mission-critical applications in the Oil & Gas and Power Generation sectors.

3Are there authorized dealers for pneumatic torque wrenches like the CP6641?

TorqLite operates a nationwide network of support and distribution. It is vital to work with an authorized dealer who understands controlled bolting rather than a general tool supplier. Authorized partners provide more than just the tool, they offer the high-flow air hoses, industrial FRL packs, and custom reaction arms necessary to operate the CP6641 at its rated ±5% accuracy in heavy-duty field environments.

4What are the best pneumatic torque wrenches similar to the CP6641?

The CP6641 is the flagship of the CP66 series, providing the highest torque output at 4,100 Nm. If your application requires similar precision but slightly lower torque, the CP6626 (2,600 Nm) is an excellent alternative. For even higher torque requirements exceeding 4,100 Nm, TorqLite offers specialized hydraulic solutions. All models in the CP66 series share the same low-vibration vane motor and ergonomic composite housing, allowing for a standardized tool fleet across your facility.