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Ingersoll Rand Air Impact Wrench — 1/2in. Drive, Model# 231HA
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Ingersoll Rand Air Impact Wrench — 1/2in. Drive, Model# 231HA

Item# 158339
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Only $149.99

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Manufacturer's Warranty: 12 months parts / 12 months labor

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Product Summary

This air impact wrench delivers the power and performance to tackle tough jobs with ease, including tire rotation, brake jobs, crank pulley bolt removal, and more.

Features + Benefits

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  • In-handle exhaust directs air away from work area
  • Pressure-fed lubrication system
  • Adjustable power regulation

Key Specs

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Item#158339
Ship Weight7.0 lbs
Drive (in.)1/2
Speed - No Load (RPM)8,000
Average Air Consumption (CFM)4.2
CFM at Load22
Working Torque (ft.-lb.)25–350
Forward Torque (ft.-lbs.)450
Max. Reverse Torque (ft.-lbs.)590
Impacts Per Minute (IPM)1,200
Hammer MechanismTwin
ReversibleYes
Standard Bolt Capacity (in.)9/16
Inlet Size (in.)1/4
Min. Hose Size (in.)3/8
Noise Level (dB)94
Tool Weight (lbs.)5.8
Tool Length (in.)7.3

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Extended Warranty

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Service Protection Plus

Manufacturer Warranty:
12 months parts / 12 months labor

Protect your purchase beyond the manufacturer's warranty
with Service Protection Plus!

DESCRIPTION (Click More Info for details) 1 Year Extension 2 Year Extension
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Drive (in.)
1/2 1/2 1 3/4 1/2
Speed - No Load (RPM) 8,000 8,000 3,200 4,500 9,800
Average Air Consumption (CFM) 4.2 4 8.7 7.8 5
CFM at Load 22 4.5 8.7 7.8 -
Operating PSI - 90–120 90 90–120 -
Working Torque (ft.-lb.) 25–350 200–900 2,300 200–1,200 50–550
Forward Torque (ft.-lbs.) 450 - 2,300 - 550
Max. Torque (ft.-lbs.) - 1,295 2,300 1,400 780
Nut Busting Torque (ft.-lbs.) - - 2,300 - 1,100
Max. Reverse Torque (ft.-lbs.) 590 - 2,300 - 780
Impacts Per Minute (IPM) 1,200 950 under load 400 - 1,250
Hammer Mechanism Twin Twin clutch Pinless Twin -
Variable Speed
- No Yes Yes Yes
Reversible Yes Yes Yes Yes Yes
Standard Bolt Capacity (in.) 9/16 - 1.72 - -
Inlet Size (in.) 1/4 1/4 1/2 1/4 1/4
Min. Hose Size (in.) 3/8 3/8 1/2 1/4 3/8
Noise Level (dB)
94 86 118 89 109
Tool Weight (lbs.) 5.8 4 1/2 37 12.28 3.95
Tool Length (in.) 7.3 8 1/4 24 8.93 7 3/8
Case Included - No Yes No -