Proto J150RSH Air Ratchet 1/2 in Drive 65 Ft/lb

Product Description

The PROTO J150RSH is a 1/2 inch drive inline air ratchet built for professional technicians who need controlled torque output in tight spaces. Rated at 65 ft/lb of torque and operating at 90 psi, this tool runs at 350 RPM and accepts a 1/4 inch NPT air inlet. At 12.4 inches in overall length, it fits the inline handle profile that experienced mechanics rely on for consistent drive angle and reduced hand fatigue during extended fastener work. It is designed for shop and field use where a pneumatic ratchet outperforms hand tools on repetitive fastening tasks.

The J150RSH is suited for automotive, fleet, and heavy equipment service environments where 1/2 inch drive pneumatic tools are standard. The inline handle configuration makes it practical for engine bay work, suspension service, and underbody access points where a pistol-grip ratchet may not clear surrounding components. A minimum hose size of 3/8 inch is required to maintain adequate airflow and consistent tool performance. It is appropriate for use at service bays, dealerships, and mobile repair operations supplied by a compressor delivering at least 90 psi.

Key Features

• 1/2 inch drive with 65 ft/lb torque output for medium-duty fastener applications
• Inline handle design provides a low-profile grip suitable for confined work areas
• 350 RPM free speed for efficient fastener cycling
• 1/4 inch NPT air inlet compatible with standard shop fittings
• 89 dB rated operation — reference local shop noise exposure guidelines for prolonged use
• Compact 12.4 inch overall length for improved reach in restricted spaces

Compatibility

Designed as an OEM-style pneumatic ratchet for use with standard 1/2 inch drive sockets and accessories. Requires a compressed air supply at 90 psi and a minimum 3/8 inch inside diameter air hose.

Installation Notes

Installation and operation should be performed by qualified mechanics or service technicians familiar with pneumatic tool safety. Before connecting to an air supply, verify that the air line pressure does not exceed 90 psi and that the hose is rated for the required flow. Always disconnect the air supply before changing sockets or performing any maintenance on the tool. Refer to OSHA 29 CFR 1910.242 and the manufacturer guidelines for safe use of portable pneumatic tools in shop environments.