Bridgeport 12060147 Z-axis Gear Shaft Milling Machine Part

Product Description

The BRIDGEPORT 12060147 is a Z-axis gear shaft designed as a direct replacement component for Bridgeport milling machines. The gear shaft is a critical drivetrain element in the vertical knee-mill assembly, transmitting rotational force along the Z-axis to control vertical table movement. Worn or damaged gear shafts cause imprecise quill or knee travel, backlash, and loss of repeatable depth control. This part restores accurate vertical-axis motion to the machine. Installation requires a qualified machine tool technician or maintenance machinist familiar with Bridgeport-style knee-mill assemblies.

This gear shaft is used in Bridgeport-style vertical knee milling machines where Z-axis vertical travel is driven through a geared shaft mechanism. Typical service scenarios include rebuild projects, preventive maintenance overhauls, and field repairs caused by wear, corrosion, or mechanical failure in the Z-axis drivetrain. The component is sold individually, making it suitable for targeted part replacement without purchasing a full assembly kit.

Key Features

• Direct OEM-style replacement for the Z-axis gear shaft position in Bridgeport milling machine assemblies
• Restores accurate vertical-axis travel and eliminates excessive backlash caused by a worn shaft
• Sold as a single unit, allowing targeted replacement without full assembly purchase
• Designed for integration into the vertical knee-mill Z-axis drivetrain

Compatibility

Designed as an OEM-style replacement gear shaft for Bridgeport vertical knee milling machines. No additional compatible model numbers or part cross-references were provided in the available product data.

Installation Notes

Installation should be performed by a qualified machine tool technician or industrial maintenance machinist. De-energize the machine and lock out all power sources following LOTO procedures before disassembling any drivetrain components. Proper removal of the Z-axis assembly typically requires standard machine shop hand tools and a clean work surface to avoid contaminating bearing surfaces. Refer to the applicable Bridgeport service manual for disassembly sequence and reassembly torque references specific to your machine model.