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  • 8431 0278 34 | LUM12 SR2 | Inline Pneumatic Screwdriver, 0.5 - 2.5 Nm, 1700 rpm, reversible

8431 0278 34 | LUM12 SR2 | Inline Pneumatic Screwdriver, 0.5 - 2.5 Nm, 1700 rpm, reversible

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The LUM series is the workhorse of Atlas Copco's pneumatic screwdrivers. Designed to be comfortable to work with all day and to be durable in a tough production environment, they combine the best engineering, continuously refined and improved, to bring you superior ergonomics, durability and productivity.

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Overview

Atlas Copco 8431 0278 34

Lum12 Sr2, Inline Pnuematic Screwdriver W/ Lever Start, 4.4-22.1 In Lb


Atlas Copco pneumatic LUM screwdrivers have a fast and accurate shut-off clutch for smooth performance and high quality tightening. They are suitable for joints with demands on torque accuracy, providing accurate tightening time-after-time, independent of variations in joint stiffness.

Features:
  • Superior ergonomics
    • Small tool for low weight
    • Fast shut-off clutch gives lower reaction torque
  • Compact size for accessibility in cramped spaces
  • Reversible
  • Quick change chuck
  • Lubrication-free
  • Straight screwdrivers should be used with a torque arm for best ergonomics
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Features & Benefits

  • lever start function and reverse ring.
  • Fast shut-off clutch Lubrication free
  • Reversible
  • Reduced strain on operator
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Technical Specifications

SKU: 8431 0278 34
Air inlet thread
1/8 in
CS distance
17 mm
Length
217 mm
Output size
1/4
Recommended hose size
6 mm
Weight
1.3 lb
Model type
Straight
Output type
Hexagon, Female
Shut-off
Shut-off
Start trigger
Trigger lever
Sound pressure
75 dB(A)
Sound standard
ISO15744
Sound uncertainty
3 dB(A)
Vibration standard
ISO28927-2
Vibration value
<2.5 m/s²
Free speed
1700 r/min
Air consumption at free speed
13 cfm
Max working pressure
100 psig
EAC certified
Yes
EU Legislation
2006/42/EC
EU Standard
ISO 11148-6
UK Regulations
S.I. 2008/1597
UK Standard
ISO 11148-6
Torque range max
1.84 ft-lb
Torque range min
0.37 ft-lb
Torque range soft joint max
22.1 in-lb
Torque range soft joint min
4.4 in-lb
Air inlet thread
1/8 in
CS distance
17 mm
Length
217 mm
Output size
1/4
Recommended hose size
6 mm
Weight
1.3 lb
Model type
Straight
Output type
Hexagon, Female
Shut-off
Shut-off
Start trigger
Trigger lever
Sound pressure
75 dB(A)
Sound standard
ISO15744
Sound uncertainty
3 dB(A)
Vibration standard
ISO28927-2
Vibration value
<2.5 m/s²
Free speed
1700 r/min
Air consumption at free speed
13 cfm
Max working pressure
100 psig
EAC certified
Yes
EU Legislation
2006/42/EC
EU Standard
ISO 11148-6
UK Regulations
S.I. 2008/1597
UK Standard
ISO 11148-6
Torque range max
1.84 ft-lb
Torque range min
0.37 ft-lb
Torque range soft joint max
22.1 in-lb
Torque range soft joint min
4.4 in-lb
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Technical Documents

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