Bahco Torque Wrench User manual

Torque Angle Gauge
Automotive manufacturers prescribe both torque and rotational
angle settings for fastening elements used in vehicles.
Angle controlled torquing gives initially “snug” torque, then turns
the fastener a step further to the optimum torquing angle.
Torque is measured to the maximum safe working load, while
preventing overtorquing and damage to the fasteners.
Large, easy to read scale with oil resistant,
non-reflective surface. The angle indicator
clearly indicates the angular reading.
The adjustable reference arm is firmly attached
to a non-moving part of the machine and
prevents the scale turning.
Easy to use,
precision work:
Window clicker
torque wrench
000000ENG
Art.-Code EAN-Code Drive
731415+
7851-DW 1846602 1 1/2" 155
8951-DW 1846619 1 3/4" 520
g
3/4" female square drive on the input side.
3/4" male square drive on the output side.
1/2" female square drive on the input side.
1/2" male square drive on the output side.
www.bahco.com

Art. Code EAN-Code Graduation Drive Length
731415+ Capacity Scale Handle mm
7451-20 1845452 1 2-20 Nm 1 Nm 0.1 Nm 3/8" 355 900
7451-100 1845469 1 10-100 Nm 5 Nm 0.5 Nm 3/8" 418 1000
7851-200 1845476 1 20-200 Nm 10 Nm 1 Nm 1/2" 515 1300
7851-340 1845483 1 70-340 Nm 20 Nm 2 Nm 1/2" 515 1300
Magnifying window scale enables easy, accurate read-off.
Strong, reversible ratchet, 32 teeth, 11.25° pivot range.
Aspring-loaded ball ensures the sockets are firmly attached and
cannot fall off. The release mechanism enables sockets to be
removed and changed quickly at the push of a button.
The required torque is quickly set via a pull-out setting knob
in the handle.
When the preset torque is attained, the wrench produces both
audible and tactile signals.
Right-hand turn for controlled screw tightening.
Accuracy is in accordance with
DIN/ISO 6789.1993, EN26789.1994
User friendly designed, comfortable handle
Chromium-plated
With test certificate in accordance with
DIN/ISO 6789.1993, EN26789.1994
Calculating scale settings where an extension arm is used with the torque wrench
The right torque readings at a glance
BL1
Torque wrench for interchangeable insert tools
7451-DEMO-KIT
Torque wrench with permanent ratchet
For all assembly jobs, especially where access
with conventional sockets is not possible.
Right-hand turn for controlled screw tightening
(the torque wrench can also be used for controlled
left screw tightening, when turned over by 180°).
Accuracy is in accordance with
DIN/ISO 6789.1993, EN26789.1994.
(2 Nm) (7 Nm)
g
Art. Code EAN-Code Graduation Insert Length
731415+ Capacity Scale Handle mm mm
6852-20 1845490 1 2-20 Nm 1 Nm 0.1 Nm 9 x 12 355 800
7452-100 1845506 1 10-100 Nm 5 Nm 0.5 Nm 9 x 12 380 900
7852-200 1845513 1 20-200 Nm 10 Nm 1 Nm 14 x 18 493 1300
7852-340 1845520 1 70-340 Nm 20 Nm 2 Nm 14 x 18 493 1300
g
Measuring Range in Nm = Newton-Metre Measuring Range in Nm = Newton-Metre
L1= Length of the lever arm on the torque wrench itself
B = Distance between the two pivot centres after attaching the extension
T = Tightening torque of the bolt
C = Setting value
Example:
L1 = 425 mm
B = 40 mm
T = 20 Nm
C = ?
C = 0,425 x 20
0,425 + 0,040
8,5
0,465
=18,28
=
C = 18,28 Nm
Each torque wrench has been specifically designed for a specific maximum scale reading and tested at this
level. For various reasons, it may be necessary in practice to add an extension arm.
To this end it is necessary to adjust the programming.
The required settings may be calculated using the following formula: C = L1 x T
L1 + B

Art. Code EAN-Code Graduation Drive Length
731415+ Capacity Scale Handle mm
7451-20 1845452 1 2-20 Nm 1 Nm 0.1 Nm 3/8" 355 900
7451-100 1845469 1 10-100 Nm 5 Nm 0.5 Nm 3/8" 418 1000
7851-200 1845476 1 20-200 Nm 10 Nm 1 Nm 1/2" 515 1300
7851-340 1845483 1 70-340 Nm 20 Nm 2 Nm 1/2" 515 1300
Magnifying window scale enables easy, accurate read-off.
Strong, reversible ratchet, 32 teeth, 11.25° pivot range.
Aspring-loaded ball ensures the sockets are firmly attached and
cannot fall off. The release mechanism enables sockets to be
removed and changed quickly at the push of a button.
The required torque is quickly set via a pull-out setting knob
in the handle.
When the preset torque is attained, the wrench produces both
audible and tactile signals.
Right-hand turn for controlled screw tightening.
Accuracy is in accordance with
DIN/ISO 6789.1993, EN26789.1994
User friendly designed, comfortable handle
Chromium-plated
With test certificate in accordance with
DIN/ISO 6789.1993, EN26789.1994
Calculating scale settings where an extension arm is used with the torque wrench
The right torque readings at a glance
BL1
Torque wrench for interchangeable insert tools
7451-DEMO-KIT
Torque wrench with permanent ratchet
For all assembly jobs, especially where access
with conventional sockets is not possible.
Right-hand turn for controlled screw tightening
(the torque wrench can also be used for controlled
left screw tightening, when turned over by 180°).
Accuracy is in accordance with
DIN/ISO 6789.1993, EN26789.1994.
(2 Nm) (7 Nm)
g
Art. Code EAN-Code Graduation Insert Length
731415+ Capacity Scale Handle mm mm
6852-20 1845490 1 2-20 Nm 1 Nm 0.1 Nm 9 x 12 355 800
7452-100 1845506 1 10-100 Nm 5 Nm 0.5 Nm 9 x 12 380 900
7852-200 1845513 1 20-200 Nm 10 Nm 1 Nm 14 x 18 493 1300
7852-340 1845520 1 70-340 Nm 20 Nm 2 Nm 14 x 18 493 1300
g
Measuring Range in Nm = Newton-Metre Measuring Range in Nm = Newton-Metre
L1= Length of the lever arm on the torque wrench itself
B = Distance between the two pivot centres after attaching the extension
T = Tightening torque of the bolt
C = Setting value
Example:
L1 = 425 mm
B = 40 mm
T = 20 Nm
C = ?
C = 0,425 x 20
0,425 + 0,040
8,5
0,465
=18,28
=
C = 18,28 Nm
Each torque wrench has been specifically designed for a specific maximum scale reading and tested at this
level. For various reasons, it may be necessary in practice to add an extension arm.
To this end it is necessary to adjust the programming.
The required settings may be calculated using the following formula: C = L1 x T
L1 + B

Torque Angle Gauge
Automotive manufacturers prescribe both torque and rotational
angle settings for fastening elements used in vehicles.
Angle controlled torquing gives initially “snug” torque, then turns
the fastener a step further to the optimum torquing angle.
Torque is measured to the maximum safe working load, while
preventing overtorquing and damage to the fasteners.
Large, easy to read scale with oil resistant,
non-reflective surface. The angle indicator
clearly indicates the angular reading.
The adjustable reference arm is firmly attached
to a non-moving part of the machine and
prevents the scale turning.
Easy to use,
precision work:
Window clicker
torque wrench
000000ENG
Art.-Code EAN-Code Drive
731415+
7851-DW 1846602 1 1/2" 155
8951-DW 1846619 1 3/4" 520
g
3/4" female square drive on the input side.
3/4" male square drive on the output side.
1/2" female square drive on the input side.
1/2" male square drive on the output side.
www.bahco.com