Boston Gear 12208 Miter Gear 18T 1/2 Inch Bore Steel

Product Description

The BOSTON GEAR 12208 is a steel miter gear designed for transmitting rotational motion between intersecting shafts at a 90-degree angle. With 18 teeth, a diametral pitch of 12, and a 1/2-inch bore diameter, this gear is sized for light-to-medium duty mechanical drive applications. The 20-degree pressure angle provides a reliable tooth engagement profile that balances load capacity with smooth operation. Machinists, millwrights, and mechanical assemblers install this type of gear in gearboxes, power transmission assemblies, and industrial machinery where perpendicular shaft arrangements are required.

This miter gear is suited for use in industrial and commercial mechanical systems where equal-ratio right-angle power transmission is needed. Typical applications include conveyor drives, packaging equipment, food processing machinery, and general industrial gearbox assemblies. The 1/2-inch bore accommodates standard shaft sizes common in light industrial drive trains. The steel construction makes it appropriate for environments where durability and resistance to mechanical wear are priorities.

Key Features

• 18 teeth with a diametral pitch of 12 for precise gear ratio and tooth mesh
• 20-degree pressure angle for balanced load distribution and smooth engagement
• 1/2-inch bore diameter fits standard light industrial shaft sizes
• Steel construction provides durability and wear resistance in mechanical drive applications
• 1.5-inch pitch diameter and 1.625-inch outside diameter for compact right-angle drive packaging
• 1.25-inch hub diameter with 0.63-inch hub projection for secure shaft mounting

Compatibility

Designed as an OEM-style replacement or upgrade miter gear for right-angle mechanical drive assemblies requiring a 12 diametral pitch, 18-tooth, 1/2-inch bore steel miter gear.

Installation Notes

Installation of miter gears is typically performed by millwrights or mechanical technicians. De-energize and lock out all power sources before disassembly or installation of any drive components. Verify bore diameter, diametral pitch, and pressure angle match the mating gear before installation, as mismatched specs will cause premature wear or failure. Ensure proper shaft alignment and adequate lubrication per the equipment manufacturer's specifications before returning the drive to service.