Overview
The Dodge 455579 2B40-SH is a high-quality V-belt sheave designed for industrial power transmission applications. This QD-bushed, 2-groove pulley isolates shock loads and vibration while maintaining the efficiency needed for demanding drive systems. Cast-iron construction and precision machining ensure reliable performance and extended belt life.
Key Features
- Shock Load & Vibration Isolation: Protects connected equipment from sudden load changes and operating vibration
- High Efficiency: Delivers 95% typical efficiency, reducing energy waste in power transmission
- QD Bushing Compatible: Quick-disconnect bushing system allows fast mounting and unmounting without removing shaft
- Corrosion-Resistant Finish: Gray-iron construction with protective coating for extended service life
- Low Maintenance: No lubrication required; balanced design minimizes vibration at standard operating speeds
- Drive Ratio Capability: Supports drive ratios of 6:1 or greater with proper belt selection
Technical Specifications
Precision engineering follows RMA/MPTA industry standards for smooth operation and extended belt life.
- Part Number: 455579
- Model: 2B40-SH (also designated 2A3.6/B4.0)
- Number of Grooves: 2
- Belt Section Size: A & B
- Outside Diameter: 4.35 inches
- Pitch Diameter (A Section): 3.6 inches
- Pitch Diameter (B Section): 4.36 inches
- Bore Type: QD Bushed
- Bushing Series: SH
- Bushing Bore Range: 7/16 to 1-11/16 inches
- Length Through Bore: 1.3125 inches
- Face Width: 1.75 inches
- Material: Cast Iron
- Keyway Options: Multiple sizes (1/4 x 1/8, 1/8 x 1/16, 3/16 x 3/32, 3/8 x 3/16, 5/16 x 5/32)
- Maximum Rim Speed: 6500 FPM (static balance)
- Finish: Corrosion-resistant coating
Typical Applications
The Dodge 455579 is suitable for a wide range of industrial motor-driven equipment:
- HVAC systems and fan drives
- Conveyor systems and material handling equipment
- Pump and compressor drives
- Machine tool drives with variable load conditions
- Industrial motor coupling and reduction systems
- Applications requiring quiet, efficient power transmission
Compatibility & Replacements
Compatible With
- Standard A and B belt sections (V-belts)
- QD-type bushings in SH series
- 1750 and 3600 RPM motor applications
- Industrial power transmission systems meeting RMA/MPTA standards
- Drive systems with bore requirements from 7/16 to 1-11/16 inches
Replaces / Drop-In Replacement For
Verify exact replacement compatibility with your original equipment documentation or contact a system integrator. The 455579 is manufactured as a direct replacement for OEM applications requiring the 2B40-SH configuration.
Works With
- V-belt drive systems (A and B sections)
- QD quick-disconnect bushing assemblies
- Industrial electric motors and prime movers
- Standard shaft-coupling applications
- Gear reducers and speed changers
