Overview
The Dodge 120378 is a Type SD QD (Quick Disconnect) bushing engineered for reliable shaft mounting in power transmission and industrial drive applications. This Dodge 120378 QD bushing features a flanged design with a 1-3/8 inch bore diameter and ductile iron construction for durability and precision. The 4-degree angled taper enables fast, tool-free engagement and disengagement, making it ideal for systems requiring frequent shaft changes or maintenance access.
Key Features
- Type SD flanged bushing with 4-degree angled taper for easy on/off operation
- 1-3/8 inch bore diameter accommodates standard industrial shafts
- Ductile iron construction rated for 5000 in-lb torque capacity
- Three bolt holes with 1/4 x 1-7/8 inch installation screws
- 5/16 x 5/32 inch keyway for positive shaft indexing
- No lubrication required; operates dry for maintenance-free performance
Technical Specifications
The Dodge 120378 is precision-manufactured to industry standards. Key dimensions include a 2.18 inch barrel diameter, 3.81 inch hub diameter, 3.18 inch flange diameter, and 1-13/16 inch overall length. The bushing features a 2-11/16 inch bolt circle with 7/16 inch flange thickness for structural integrity. Maximum torque capacity is 5000 in-lb when installation screws are tightened to specification. Do not over-torque, as this can cause hub damage.
Typical Applications
- Motor and gearbox coupling installations requiring quick removal
- Industrial fan, pump, and blower drive systems
- Power transmission where shaft accessibility is critical
- Preventive maintenance programs requiring tool-free bushing extraction
- OEM equipment designed for Dodge QD bushing mounts
Compatibility & Replacements
Compatible With
- Dodge industrial hubs and sheaves designed for SD-type QD bushings
- Standard 1-3/8 inch diameter shafts (verify shaft runout and cleanliness before installation)
- Power transmission drives operating at 5000 in-lb torque or below
- Both conventional and reverse mounting configurations
Replaces / Drop-In Replacement For
- Verify compatibility with your system integrator or Dodge technical support before ordering. While this is a standard SD 1-3/8 bushing, exact replacements depend on hub design and mounting configuration.
Works With
- Baldor-Dodge industrial power transmission components
- Standard metric and imperial shaft sizing systems
- Clean, dry operating environments without lubricant exposure
- Factory rebore and keyseat services available for custom applications
