Bridgeport 11192207 Single Thread Worm Gear Milling Machine

Product Description

The BRIDGEPORT 11192207 is a single-thread worm gear designed as a replacement part for Bridgeport milling machines. Worm gears in a milling machine head transfer rotational motion between non-intersecting shafts, providing the mechanical advantage needed for controlled spindle speed changes. This gear fits within the lower housing of the milling head and is a direct OEM-style replacement for worn or damaged units. Installation is typically performed by a machinist or mechanical technician during a scheduled overhaul or corrective maintenance procedure.

This worm gear is intended for use with Bridgeport I Series milling machines equipped with a 2J or J-Head lower housing assembly. It is a standard service part used in machine shops, vocational facilities, and industrial maintenance environments where Bridgeport knee mills remain in active service. Sourcing an exact-fit replacement helps restore proper gear mesh and reduces backlash introduced by worn components.

Key Features

• Single-thread worm gear profile for direct OEM-style replacement
• Designed for the 2J and J-Head lower housing assembly
• Compatible with Bridgeport I Series milling machines
• Sold individually — package quantity of 1

Compatibility

Designed for use with Bridgeport I Series milling machines with 2J and J-Head lower housing configurations, as specified by the manufacturer.

Installation Notes

Installation should be performed by a qualified machinist or mechanical technician. Disconnect and lock out all electrical power to the milling machine before disassembling the head or lower housing. Inspect the mating worm wheel for wear before installing the new gear, as mismatched wear patterns between the worm and wheel can accelerate component failure. Follow standard machine tool service procedures and any applicable OSHA lockout/tagout requirements.