71aR/80 | IndicatingRatchet Torque Wrenchw/dialgauge,3/4''Square,160–800Nm
Overview
The Stahlwille 71aR/80 is a robust, pre-set mechanical torque wrench engineered for high-repetition, precision assembly. Designed with an interchangeable head interface (9x12 mm or 14x18 mm), it allows technicians to quickly switch between tool heads while maintaining consistent torque performance.
Built for controlled, tamper-proof torque settings, the 71 series eliminates unauthorized adjustments on the floor, helping manufacturers meet stringent quality standards. It’s compact, ergonomic, and designed for long-term use in environments where reliability and repeatability are critical. The audible “click” signal ensures users know exactly when the torque threshold is met, while the maintenance-free design reduces lifecycle costs.
Supplied with a calibration certificate and compliant with DIN EN ISO 6789-2:2017, the 71aR/80 is the smart choice for manufacturers seeking uncompromising precision.
Features & Benefits
- Pre-set Torque Wrench – torque value is set using a tester or calibration device
- Insert Head Interface – compatible with 9x12 mm or 14x18 mm interchangeable tools for versatility.
- Trigger Mechanism with Audible Click for clear, repeatable torque control.
- No Micrometer Scale – prevents unauthorized torque adjustments in production environments.
- Factory Calibrated and supplied with a certificate per DIN EN ISO 6789-2:2017.
Technical Specifications
Technical Documents
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Frequently Asked Questions
Can I adjust the torque value on a 71aR/80 wrench myself?
What types of heads can I use with this wrench?
The 71aR/80 series supports insert tools with 9x12 mm or 14x18 mm interfaces, including open-end, ring, and square drives.
Does the tool click when the torque value is reached?
Yes — it produces a distinct audible and tactile click when the preset torque is achieved, ensuring clear feedback for the user.
Is this wrench suitable for both directions?
No — it is designed for clockwise torque application only, unless a reversible insert head is used.
How often does it need to be calibrated?
Calibration is recommended annually or after 5,000 cycles, depending on usage frequency and compliance needs.
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