FAQ

Extensive testing on our test bench yielded the following results:
Battery torque wrench MAD 20 with a target torque setting of 1,000Nm

• Battery pack 5.2Ah – number of bolts 191 (standardized to 1Ah 36.7)
• Battery pack 8.0Ah – number of bolt 303 (standardized to 1Ah 37.9)
• Battery pack 10.0Ah – number of bolts 358 (standardized to 1Ah 35.8)

In general, it has been found that the battery life of a torque wrench cannot be specified in general terms, as it is influenced by several technical and environmental factors. The energy requirement of the respective bolting application is particularly decisive:

• Torque range: Higher torques require more power and discharge the battery more quickly.
• Bolting hardness (soft/hard): In hard bolting applications, the final torque is reached very quickly; the machine operates for a short time but with high peak currents. Soft bolting applications require longer torquing times, which also increases energy consumption.
• Friction behavior in the bolt connection: Different materials, surface properties, and bolt types influence the amount of force required and thus the battery load.
• Temperature and environmental influences: Cold reduces the available battery capacity; heat can reduce power output and protect the cells. Moisture or dust can also impair the efficiency of the tool.
• Condition of the battery: Degree of aging, charging cycles, and cell quality have a direct impact on the usable capacity.

No. A standard reaction arm cannot reliably meet the mechanical requirements of many bolting applications. We always consider the torque wrench to be a complete assembly system consisting of a bolting tool, reaction arm, and socket. Only when all system components are tailored to the specific application can the required process reliability be achieved.

The reaction arm serves to absorb and dissipate the reaction torque. Its geometry, length, attachment points, and material design must be precisely tailored to the respective bolting application and the socket used. If the reaction arm is not technically suitable, there is a risk that the reaction torque will not be completely absorbed. As a result, the preload force generated is not transferred 100% to the bolt connection, which directly affects the quality and repeatability of the assembly process.

For these reasons, we do not supply standard solutions, but instead provide a customer-specific, individually designed reaction arm for each torque wrench. The complete special design and manufacture of the reaction arm are carried out in-house and are included in the scope of delivery free of charge.

This video demonstrates the correct assembly (or disassembly) procedure: