Proto J4056-4 Reversible Puller Jaw 4 Inch Reach

Product Description

The PROTO J4056-4 is a reversible puller jaw designed for use with compatible mechanical pullers in professional trade and maintenance applications. The jaw provides a 4-inch reach, with a secondary reach dimension of 3-3/4 inches depending on orientation. Reversible jaws allow a single component to serve two reach configurations, reducing the need to carry multiple jaw sets on the job. This part is intended for use by maintenance technicians, millwrights, and mechanical tradespeople performing bearing, gear, or pulley removal work.

The J4056-4 is suited for industrial maintenance, HVAC mechanical service, and general equipment repair where puller sets are required. It is designed to mount onto compatible PROTO puller frames and is sold as a single jaw. Technicians working on motors, pumps, compressors, and similar rotating equipment will find this jaw useful in confined or standard access conditions where reach flexibility matters.

Key Features

• Reversible design provides two reach options: 4 inches and 3-3/4 inches
• Sold individually as a replacement or supplemental jaw
• Manufactured in the United States
• Lightweight at 0.40 pounds for easy handling in the field

Compatibility

Designed as a replacement or supplemental jaw for compatible PROTO mechanical puller sets. Verify puller frame compatibility with your existing PROTO puller model before ordering.

Installation Notes

Installation of puller jaws should be performed by a qualified mechanic or maintenance technician. Ensure the puller frame and all jaw components are fully seated and secured before applying load. Never exceed the rated capacity of the puller set. Inspect jaws for cracks or deformation before each use and replace any damaged components immediately.