Overview
The Boston Gear GD96A 11236 is a high-performance cast iron change gear engineered for machine tool applications. This precision component features 96 teeth with a 12 diametrical pitch (DP) and 14-1/2 degree pressure angle, delivering reliable performance in variable-speed drive systems. Boston Gear change gears are industry-standard for providing different cutting speeds while maintaining constant-speed input motors.
Key Features
- Cast iron construction for durability and wear resistance in high-cycle applications
- 96-tooth configuration for precise ratio control in machine tool setups
- Double-key design accommodates compound steel bushings for smooth multi-gear assembly
- 14-1/2 degree pressure angle optimized for efficient power transmission
- Compatible with Boston Gear bushing and intermediate shaft systems
Technical Specifications
- Model Number: GD96A
- Boston Gear Part Number: 11236
- Tooth Count: 96
- Diametrical Pitch (DP): 12
- Pressure Angle: 14-1/2 degrees
- Material: Cast Iron
- Bore Diameter: 1.000 inch
- Face Width: 0.750 inch
- Keyways: 2 (180° apart)
- Condition: New in Box
Typical Applications
The GD96A 11236 change gear is commonly used in:
- Machine tool drive systems requiring multiple speed ratios
- Lathe and milling equipment gear trains
- Industrial equipment where constant motor speed drives variable spindle/cutting speeds
- Retrofit and restoration projects for legacy machine tools
- OEM production runs requiring standard, reliable gearing components
Compatibility & Replacements
Compatible With
- Boston Gear compound steel bushings (part of GD-series bushing line)
- Standard machine tool intermediate shafts (1.000 inch bore mounting)
- 12 DP gearing systems and gear trains
- Machine tools using Boston Gear change gear assemblies
Replaces / Drop-In Replacement For
The GD96A 11236 is the direct replacement part number for Boston Gear 96-tooth cast iron change gears. Verify specific compatibility with your machine tool documentation or system integrator before ordering, as mounting and shaft configurations may vary by equipment model.
Works With
- Boston Gear GD-series spur gears and pinions (20–128 tooth range)
- Standard machine tool drive systems using involute spur gears
- Conventional keyway and bushing mounting systems
- Multi-ratio gear train assemblies for speed reduction/multiplication
