Atlas Copco LMS08 SR42 Impact Wrench

Atlas Copco LMS08 SR42 Pneumatic Impact Wrench 1/4"

Product Introduction

The LMS08 SR42 from Atlas Copco is a straight-type pneumatic impact wrench. This non shut-off tool excels in demanding environments where fast disassembly or tightening is required. It delivers extraordinary power relative to its weight. The unique Grease Retaining System keeps the tool performing at its best for longer periods. Moreover, you barely feel any reaction force during operation. This makes the LMS08 SR42 perfect for continuous industrial use.

Key Technical Specifications

This impact wrench drives bolts from 6 mm to 8 mm. Maximum torque reaches 44 ft-lb (approximately 60 Nm). The torque range is adjustable from 5 ft-lb to 26 ft-lb. Impact rate is 1650 blows per minute. Output size is 1/4" with a female hexagon type. A quick change chuck of 1/4" is also included. The tool length measures 185 mm. Center to side (CS Distance) is 20 mm.

For air requirements, consumption is 9.1 cfm at maximum load. Maximum working pressure is 90 psi. The air inlet thread is 1/4". Recommended hose size is 6.3 mm. The tool weighs only 1.9 lb (0.86 kg), but the package weight including accessories is 1.17 kg. Country of origin is Hungary (HU).

Design and Function Features

The LMS08 SR42 uses a straight housing design for easy handling in tight spaces. It has no automatic shut-off, so you control the fastening time manually. This design suits applications where you need full control over the final torque. The Grease Retaining System is a standout feature. It holds lubricant exactly where moving parts need it. Consequently, service intervals become longer and tool life increases significantly.

Noise and Vibration Data

Sound pressure level is 85 dB(A) with a sound power level of 96 dB(A). Both measurements follow ISO15744 standard. Uncertainty is 3 dB(A). Vibration value is 5.6 m/s² according to ISO28927-2. Vibration uncertainty is not specified by the manufacturer. These figures help you assess operator exposure and select appropriate hearing protection.

Certifications and Compliance

The Atlas Copco LMS08 SR42 meets EU Directive 2006/42/EC (Machinery Directive). It complies with EU Standard EN ISO 11148-6:2012 for hand-held non-electric power tools. For the UK market, it follows S.I. 2008/1597 regulations and the same EN ISO 11148-6:2012 standard. EAC certification is also confirmed, allowing sales in Eurasian Customs Union countries.

Installation and Operating Guidelines

Connect the LMS08 SR42 to a clean, lubricated air supply regulated to 90 psi maximum. Use a 1/4" air hose with 6.3 mm inner diameter. Install a filter-regulator-lubricator (FRL) unit upstream. For best performance, add 2-3 drops of pneumatic tool oil per hour of operation. Insert a 1/4" hex drive socket into the female output. Apply the tool to the nut or bolt. Run the tool until the desired tightness is reached. Since this is a non shut-off wrench, remove the tool immediately after reaching torque to avoid over-tightening.

Packaging List

• 1 x LMS08 SR42 pneumatic impact wrench unit

• 1 x 1/4" quick change chuck (installed)

• 1 x Product information sheet

• No air fittings or lubricants included

Note: Certificates and warranty are not included in the package.

Shipping

We ship worldwide via FedEx, UPS, or DHL.

Frequently Asked Questions (FAQ)

1. What size bolts can the LMS08 SR42 handle?
The LMS08 SR42 handles bolt sizes from 6 mm minimum up to 8 mm maximum. It is designed for smaller fasteners and light assembly work.

2. Is this tool suitable for continuous industrial use?
Yes, Atlas Copco designed the LMS series for dependability in tough environments. The Grease Retaining System extends service intervals, making it ideal for daily production lines.

3. Does the wrench stop automatically when reaching torque?
No, the LMS08 SR42 is a non shut-off tool. You must release the trigger manually. This gives you full control but requires operator attention to avoid over-tightening.

4. What air pressure should I use?
Use a maximum working pressure of 90 psi (6.2 bar). Higher pressure may damage the tool or reduce its service life. Lower pressure reduces torque output proportionally.

5. Can I use this wrench for disassembly only?
Yes, the LMS08 SR42 works excellently for loosening rusted or overtightened nuts. Its high torque and impact action break free stuck fasteners with very little reaction force on your hand.