Overview
The Union Gear CG1689 is a cast iron change gear set manufactured by Union Gear & Machinery of Quincy, Massachusetts. This set comprises three individual spur gears designed for use in machine tool applications, where precise speed and torque control is essential. Change gears are fundamental components in legacy and modern machinery, enabling operators to adjust rotational speed while maintaining consistent input power. The Union Gear CG1689 set delivers the proven durability and performance expected from quality gear manufacturers in industrial automation and mechanical transmission systems.
Key Features
- Cast iron construction for durability, vibration damping, and cost-effectiveness
- Spur gear design with straight teeth for positive, reliable engagement
- Three-piece gear set for flexible speed-ratio configuration
- Designed for machine tool applications requiring speed reduction or variation
- Manufactured by Union Gear & Machinery, a trusted supplier of industrial gears
- New — Open Box condition, fully functional and ready to install
Technical Specifications
Detailed specifications for the Union Gear CG1689 may vary depending on gear size, pitch, tooth count, and bore diameter. For precise dimensions and pressure angle, consult the original equipment documentation or contact the manufacturer directly. Common specifications for Union Gear change gear sets include:
- Material: Cast Iron (grey or ductile iron)
- Gear Type: Spur Gears
- Set Configuration: Three-piece gear set
- Application: Machine tools, lathes, mills, industrial power transmission
- Condition: New — Open Box
- Manufacturer: Union Gear & Machinery, Quincy, Massachusetts
Typical Applications
Union Gear CG1689 change gears are suited for use in:
- Machine Tools: Lathes, milling machines, and grinding machines requiring variable spindle speeds
- Power Transmission: Mechanical systems where torque and speed ratios must be adjusted without changing motor or input shaft speed
- Industrial Automation: Manufacturing lines and equipment requiring modular speed-control solutions
- Legacy Equipment Restoration: Replacement or supplementary gears for vintage machine tool restoration and maintenance
Compatibility & Replacements
Compatible With
- Union Gear compound gear trains and shafts
- Machine tool backgears and countershaft assemblies
- Standard change gear mounting systems (verify bore diameter and keyway)
- Industrial gearbox and speed-change mechanisms requiring spur gears
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or equipment manufacturer before ordering. Direct replacement confirmation requires matching bore diameter, keyway, pitch, and tooth count. Consult your machine’s documentation or contact Union Gear & Machinery technical support for OEM equivalents.
Works With
- Industrial machine tool drive systems using change-gear speed selection
- Compound gear trains and intermediate shafts
- Equipment designed for interchangeable spur gear sets
- Standard mechanical lubrication systems (grease or oil-flood cooling)
