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Manufacturer number:
Cat. Nr.:
Torque wrench with ratchet, maximum torque: 20N·m
Article no.: 657272 20
Article code:
Click to enlarge image
Click to enlarge image
For a description of the legend, see description text.
- Direction of tightening: Right-hand tightening
- Torque measuring accuracy: ±3
- Test certificate: Manufacturer’s test certificate
- Square drive: 1/4
Product details
Technical Data
| maximum torque | 20 Nm | |
| Direction of tightening | Right-hand tightening | |
| Torque measuring accuracy | ±3 % | |
| Test certificate | Manufacturer’s test certificate | |
| Overall length L | 232 mm | |
| Torque range | 4 Nm - 20 Nm | |
| Scale graduation, 1 graduation = | 0.1 Nm | |
| Weight | 400 g | |
| Square drive | 1/4 in | |
| Display | analogue | |
| Release signalling | acoustic; haptisk | |
| Trigger principle | mechanical short-travel release | |
| Connection format | Push-through square drive (ratchet) | |
| 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 including factory calibration reference dimension [l3] | 166 mm | |
| Type of product | Torque Wrench |
Identification & Classification
| Article number | 657272 20 | |
| EAN / GTIN | 4045197439420 | |
| Manufacturer number | 657272 20 | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |
Description
Version:
Robust torque wrench, adjustable with micrometer scale, with protection against accidental changes to the setting.
Integral ratchet to accept sockets.
Units of measure: Nm, lbfft.
Integral ratchet to accept sockets.
Units of measure: Nm, lbfft.
With reversible ratchet and fixed square drive pin − only for right-hand tightening.
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.
Warning:
Intended use
- For controlled tightening of nuts and bolts.
- For both industrial and private use.
- Use only when it is technically in good condition and safe to operate.
- Have the wrench regularly calibrated and adjusted.
- Avoid vibration, reverse movement, shaking, impacts.
- Do not use the wrench as an impact tool, do not throw it.
- Do not use it for undoing screw fastenings.
- Not for use where there is exposure to intense heat, direct sunlight, naked flames or liquids.
- Do not make any unauthorised modifications.
Reasonably foreseeable misuse