OP-311LH4 1/2 Inch Angle Pneumatic Impact Wrench – Two Hammer, 90 Nm Max Torque

Specification

The OP-311LH4 is an angle pneumatic impact wrench featuring a 1/2-inch square drive and a two-hammer impact mechanism. It delivers rapid impact performance for efficient bolt tightening and removal in confined areas where a conventional straight impact wrench may be difficult to use. With up to 90 Nm maximum torque and M10 bolt capacity, it is well suited for industrial assembly and high-productivity manufacturing environments.

Features and Characteristics

1. Two-hammer impact mechanism provides high impact frequency and stable torque delivery.
2. Low reaction force improves control and helps reduce operator fatigue.
3. Angle-head housing allows convenient operation in restricted spaces.
4. One-hand forward and reverse control supports faster operation.
5. Self-locking reverse button helps prevent unintended direction changes.
6. 1/2-inch square drive is compatible with commonly used pneumatic sockets.
7. Integrated hook allows connection to a spring balancer for safer and more efficient assembly work.
8. The 265 mm body provides better reach inside machinery and equipment.

Technical Specifications

1. Model: OP-311LH4
2. Product series: OP-311LH Series
3. Impact mechanism: Two Hammer
4. Anvil size: 1/2 inch
5. Bolt size capacity: M10
6. Working torque: 50 Nm / 37 ft-lb
7. Maximum torque: 90 Nm / 66 ft-lb
8. Free speed: 8,500 RPM
9. Air consumption: 240 l/min / 8.5 CFM
10. Operating pressure: 90 PSI / 6.2 bar / 6.3 kg/cm²
11. Air inlet: PT 1/4 inch
12. Overall length: 265 mm / 10.43 inches
13. Net weight: 1.58 kg / 3.48 lb
14. Sound level: 90 dB(A)

Product Advantages

1. Angle-head design reaches confined and difficult fastening positions.
2. Maximum torque of 90 Nm provides reliable performance for M10 bolts.
3. High 8,500 RPM speed supports faster assembly cycles.
4. The 1/2-inch drive offers broad socket compatibility.
5. Durable two-hammer mechanism is suitable for frequent industrial use.
6. One-hand direction control improves operating efficiency.
7. Spring-balancer hook reduces operator load during continuous production.
8. Low counter-reaction improves comfort, stability, and safety.

Applications

The OP-311LH4 angle pneumatic impact wrench is suitable for:

1. Mechanical and industrial assembly lines.
2. Motor and machinery production or maintenance.
3. Electrical, aluminum, and metalworking industries.
4. Carpentry, furniture, and rattan manufacturing.
5. Hardware assembly and M10 bolt fastening.
6. Fastening operations inside machinery and other restricted working areas.