Bridgeport 12060271 Xy-axis Ball Crank Assembly Series I

Product Description

The BRIDGEPORT 12060271 is a factory-replacement XY-axis ball crank assembly designed for Bridgeport Series I milling machines. The ball crank assembly is the handle mechanism that operators use to feed the table along the X and Y axes during milling operations. It provides direct manual control of table movement and is a critical wear component in day-to-day shop use. Licensed machine tool technicians and millwrights typically handle replacement of this part, though experienced machinists familiar with Bridgeport mill service procedures also perform this work. This assembly ships as a single unit and is a direct fit for the Series I platform.

This ball crank assembly is intended for use on Bridgeport Series I milling machines in both production shop and job shop environments. The Series I is one of the most widely installed knee mills in the trade, found in manufacturing facilities, vocational training centers, and machine shops. Replacement is typically required when the existing crank shows excessive play, a worn or damaged ball handle, or a failed locking mechanism that prevents accurate table positioning. The part installs on the XY-axis feed saddle and restores original manual feed feel and control.

Key Features

• Direct OEM-replacement ball crank assembly for Bridgeport Series I mills
• Covers both X-axis and Y-axis feed handle positions
• Designed to restore original manual table feed operation and feel
• Sold as a complete assembly — no sub-component sourcing required
• Compatible with the basic machine configuration of the Series I platform

Compatibility

Designed for use with Bridgeport Series I milling machines in the basic machine configuration, as specified by the manufacturer for accessory type handle ball crank applications.

Installation Notes

Installation should be performed by a qualified machinist or machine tool technician familiar with Bridgeport knee mill service procedures. Before beginning, power down the machine and lock out the main disconnect in accordance with OSHA lockout/tagout requirements. Standard hand tools are typically sufficient for removal and installation of the crank assembly. Verify table travel and handle engagement before returning the machine to service.