Torque Correction Formula: Calculating Torque with Head Adapters & Offsets
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◆ T_set (Torque Setting) ：
The torque value set on the torque wrench.◆ T_req (Required Torque) ：
The actual torque that should be applied to the fastener.◆ L (Effective Length of Torque Wrench) ：
The distance between the Center of Handle (Calibration Point) and the Center of Square Drive.◆ C (Extension Length) ：
The distance between the Fastener Center and the Square Drive Center.- Conversion Formula：
T_set = T_req × (L ÷ (L + C))
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Torque Conversion Formula
Adjusted Wrench Setting (T_set)：--※Example: WM-I series：L = 180 mm，C = +5 mm For a required torque of 10 Nm
→ Set wrench to ：9.73 Nm
Additional Configurations?
When limited by space or using alternate adapters, treat the total length as a linear distance along the wrench's axis for adjustment. The following examples use WM-I series (L = 18 cm, T_req = 10 Nm).
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Recommended Practices
- ◆During use: Apply force slowly and steadily from the calibration point only.
◆If C/L exceeds 50%: Verify accuracy using a torque calibration device.
◆Over-torquing can lead to fastener fatigue, while under-torquing may cause structural failure in vibration-heavy environments like KIOSKs or moving vehicles.
◆Precise torque application is critical for high-stakes industries such as EV Charging Station installation, Industrial Power Cabinets, and Transportation Maintenance. Asmith’s digital torque solutions ensure every bolt meets the exact safety standards.
- ◆During use: Apply force slowly and steadily from the calibration point only.