CP8641 1 inch battery powered torque wrench with 4100 Nm capacity and heavy-duty reaction arm

CP8641 - 1" Battery Powered Torque Wrench (4100 Nm)

The Ultimate Cordless Solution for High-Torque Industrial Bolting

The CP8641 is the most powerful model in the CP86 series, engineered to provide massive torque in a completely mobile package. Delivering up to 4100 Nm (3020 ft.lb), this Battery Powered Torque Wrench is built for the most demanding applications in Heavy Industry, Mining, and Renewable Energy, where pneumatic lines are impractical or unavailable.

By combining the raw strength of a 1" drive with the digital intelligence of CPLinQ, the CP8641 allows for 100% tightening guarantees through counting sequences and real-time data export. It is the definitive choice for professionals who need the highest torque capacity available in the cordless market without sacrificing precision or safety.

Key Benefits

Extreme Torque Capacity

Reaches up to 4100 Nm, allowing for the secure tightening of large fasteners without air hoses or power cords.

Smart Process Control

Utilize the P-Set library and counting sequences via CPLinQ to ensure zero rework and strictly follow application requirements.

Advanced Safety Standards

The dual-start button system and automatic reaction arm release protect operators from fatigue and pinch-point injuries.

Data-Driven Quality

Connected versions (CQ and TC) provide full traceability with tightening reports and maintenance timeline tracking.

Technical Specifications

Feature	Imperial	Metric
Max Torque	3,020 ft.lb	4,100 Nm
Min Torque	740 ft.lb	1,000 Nm
Recommended Torque	2,420 ft.lb	3,280 Nm
Accuracy	±4%	±4%
Output Drive Size	1" Square	1" Square
Main Material Type	Steel	Steel
Weight (Tool & Battery Only)	18.96 lb	8.6 kg
Weight (With S-Type Arm)	23.37 lb	10.6 kg
Free Speed	3 rpm	3 rpm
Battery Type	36V / 2.5Ah Li-ion	36V / 2.5Ah Li-ion
Safety Start System	Double-trigger	Double-trigger
Connectivity	CPLinQ App	CPLinQ App
Tightening Modes	Torque & Angle	Torque & Angle
Length (L)	16.1 in	409 mm
Height (H)	11.2 in	285 mm
Width (W)	4.0 in	101 mm

Design & Functional Excellence

Unmatched Productivity

The CP8641 offers the speed and mobility needed to enhance field productivity, especially when working on wind tower nacelles or large mining equipment.

Torque Check Functionality

The TC version allows for precise control of bolt loosening and adjustment, ensuring residual torque meets engineering specs.

Temperature Monitoring

Integrated sensors prevent overheating, protecting the tool's electronics and extending the life of the brushless motor.

Extended Service Life

With a CP Care Preventive Maintenance contract, you can extend the life of your tool by up to 20% while maintaining ISO-certified calibration.

Maximum Productivity Meets Unmatched Performance - The CP8641 combines the highest torque level in the cordless market with the finesse of a precision Torque Multiplier.

Contact TorqLite today for expert consultation on how the CP8641 can revolutionize your bolting operations with superior mobility and traceability.

Related Products

CP8681

Delivers maximum torque without sacrificing mobility, replacing cumbersome hydraulic systems in heavy-industry applications. When working in remote locations or areas with limited power access, this tool keeps your crew productive and keeps projects on schedule.

View CP8681

Frequently Asked Questions: CP8641 Battery Torque Wrench

1What are the best cordless torque wrenches compatible with CP8641 specifications?

The CP8641 is the high-capacity flagship of the CP86 series. It is compatible with the same 36V/2.5Ah battery platform used across the entire range, making it easy to swap batteries between this tool and smaller models like the CP8613 or CP8626. In terms of performance specifications, the CP8641 is virtually unmatched in the cordless market, offering 4,100 Nm of torque with ±4% accuracy. For projects requiring this specific torque range along with digital reporting, there are few alternatives that offer the same level of CPLinQ integration.

2Where can I buy a CP8641 model cordless torque wrench online in the USA?

You can request a quote and purchase the CP8641 through authorized industrial bolting partners like TorqLite. Because the CP8641 is a specialized heavy-duty tool, it is not typically found in standard retail stores. Sourcing through a specialist ensures you receive a tool that is professionally calibrated and configured for your specific connectivity needs (Standalone, CQ, or TC versions) and that you have access to the heavy-duty reaction arms required to manage 4,100 Nm safely.

3How does the CP8641 manage such high torque without an air hose?

The CP8641 utilizes a high-efficiency brushless motor paired with a sophisticated multi-stage planetary gearbox. This system converts the electrical energy from the 36V Li-ion battery into massive rotational force. To ensure safety and precision at 4,100 Nm, the tool uses intelligent joint sensing and dynamic breaking to stop the motor instantly once target torque is reached, preventing the inertia-driven overshoot common in lesser tools.

4Can the CP8641 be used for wind turbine foundation and nacelle bolting?

Yes, the CP8641 is specifically engineered for the Renewable Energy sector. Its cordless design is a major advantage when working in the confined spaces of a nacelle or at the tower base where dragging air lines is a safety hazard. Its ability to perform Torque & Angle tightening ensures that large-diameter fasteners meet the strict tension requirements necessary for structural integrity in wind power applications.

5What is the benefit of the "Torque Check" (TC) feature on the CP8641?

The Torque Check (TC) version of the CP8641 is a critical tool for maintenance and auditing in heavy industry. It allows operators to verify the residual torque on existing fasteners to ensure they haven't loosened due to vibration or thermal expansion. This allows for precise auditing of mission-critical joints without the need to fully loosen and retighten the bolt, significantly speeding up maintenance intervals in mining and construction.