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Manufacturer number:
Torque wrench base unit without plug-in head, maximum torque: 20N·m
Article no.: 657277 20
Article code:
Click to enlarge image
Click to enlarge image
For a description of the legend, see description text.
- Direction of tightening: For right and left-hand tightening
- Torque measuring accuracy: ±3
- Exchangeable tool: Plug-in head
- Test certificate: Manufacturer’s test certificate
Product details
Technical Data
| maximum torque | 20 Nm | |
| Direction of tightening | For right and left-hand tightening | |
| Torque measuring accuracy | ±3 % | |
| Exchangeable tool | Plug-in head | |
| Test certificate | Manufacturer’s test certificate | |
| Overall length L | 215 mm | |
| Torque range | 4 Nm - 20 Nm | |
| Scale graduation, 1 graduation = | 0.1 Nm | |
| Weight | 400 g | |
| Adjusted reference dimension on the torque wrench [l2] | 31.8 mm | |
| Socket for plug-in head | 9×12 mm | |
| Display | analogue | |
| Release signalling | acoustic; haptisk | |
| Trigger principle | mechanical short-travel release | |
| Connection format | for plug-in heads (rectangular socket) | |
| Measurement technology | mechanical | |
| Data can be recorded | no | |
| Setting the trigger value | with adjustment scale | |
| Feedback | triggering | |
| Reversible reading | Nm; lbfft | |
| Measurement process | Torque | |
| Adjustable trigger value | adjustable | |
| Standard | DIN EN ISO 6789 | |
| Lever length without plug-in head [l1] | 153 mm | |
| Lever length including factory calibration reference dimension [l3] | 184.8 mm | |
| Type of product | Torque Wrench |
Identification numbers & Classifications
| Article number | 657277 20 | |
| EAN / GTIN | 4045197542489 | |
| Manufacturer number | 657277 20 |
Description
Version:
Robust torque wrench, adjustable with micrometer scale, with protection against accidental changes to the setting.
Basic tool with square plug-in socket (without plug-in head). Suitable spare jaws No. 657582 - 657950.
Units of measure: Nm, lbfft.
Basic tool with square plug-in socket (without plug-in head). Suitable spare jaws No. 657582 - 657950.
Units of measure: Nm, lbfft.
Function:
On reaching the set torque value the wrench triggers giving a ″signal″ (audible and perceptible) and is then immediately ready for use again.
Application:
For small to medium series.
Standard:
Tested to DIN EN ISO 6789.
Accuracy:
±3 % of the displayed value.
Cutting data:
Legend for drawing and formula:
l1 = Lever length without plug-in head
l2 = Adjusted reference dimension on the torque wrench
l3 = Lever length including factory calibration reference dimension
l4 = Reference dimension of the plug-in head
L = Total length of the tool
T1 = Torque to be set
T2 = Specified torque
l1 = Lever length without plug-in head
l2 = Adjusted reference dimension on the torque wrench
l3 = Lever length including factory calibration reference dimension
l4 = Reference dimension of the plug-in head
L = Total length of the tool
T1 = Torque to be set
T2 = Specified torque
Note:
The guaranteed measuring accuracy of the torque is achieved only once the torque range has been calibrated to DIN EN ISO 6789.
Downloads & documents
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| Direction of tightening | For right and left-hand tightening | For right and left-hand tightening | For right and left-hand tightening | Right-hand tightening | Right-hand tightening |
| Torque range | 4 Nm - 20 Nm | 2.5 Nm - 25 Nm | 2.5 Nm - 25 Nm | 4 Nm - 20 Nm | 4 Nm - 20 Nm |
| maximum torque | 20 Nm | 25 Nm | 25 Nm | 20 Nm | 20 Nm |
| Torque measuring accuracy | ±3 % | ±3 % | ±3 % | ±3 % | ±3 % |
| Standard | DIN EN ISO 6789 | DIN EN ISO 6789 | DIN EN ISO 6789 | DIN EN ISO 6789 | DIN EN ISO 6789 |
| Setting the trigger value | with adjustment scale | with adjustment scale | with adjustment scale | without setting scale (requires torque analyser) | with adjustment scale |
| Adjustable trigger value | adjustable | adjustable | adjustable | preset | adjustable |