Overview
The Boston Gear RF73240B7J is a proven 700 Series right-angle worm gear speed reducer designed for reliable power transmission in industrial applications. With a 40:1 gear ratio and output torque capacity of 2288 lb-in, this single-reduction unit delivers consistent performance for conveying, material handling, and drive applications. The RF73240B7J features a solid right-angle output shaft configuration with motor flange coupling input, providing flexible mounting options across multiple installation positions.
Key Features
- 700 Series Design: Industry-standard worm gear reducer with proven 40+ year track record of reliability
- High-Strength Bronze Worm Gear: Straddle-mounted between tapered roller bearings for superior thrust and overhung load capacity
- 40:1 Gear Ratio: Provides significant speed reduction with 2.03 HP input capability and 2288 lb-in output torque
- Multi-Position Mounting: Cast-iron housing with straddle-milled bases allows installation in virtually any orientation
- Efficient Heat Dissipation: Large oil reservoir ensures proper lubrication and thermal management for extended service life
- Durable Construction: Fine-grained cast-iron housing with internal baffles for positive, leak-free operation
Technical Specifications
- Input Power: 2.03 HP maximum
- Output Torque: 2288 lb-in (190.7 lb-ft)
- Gear Ratio: 40:1 single reduction
- Series: 700 Series (RF73 designation indicates right-angle flange input)
- Output Shaft Configuration: B7 – Solid right-angle shaft, J assembly type
- Input Connection: Motor flange coupling (C-Face compatible)
- Housing Material: Cast iron with standard gray paint
- Lubrication: Klubersynth UH1 6-460 synthetic oil recommended (factory exclusive recommendation)
- Weight: Approximately 67 lbs
- Condition: New – No Box
Typical Applications
The RF73240B7J is ideally suited for:
- Conveyor drive systems requiring high output torque and smooth, quiet operation
- Material handling equipment with variable mounting requirements
- Industrial lifting and positioning mechanisms
- Pump and compressor drive applications
- Agitator and mixer drives in manufacturing processes
- Any application requiring reliable right-angle power transmission with a 40:1 speed reduction
Compatibility & Replacements
Compatible With
- Standard NEMA AC induction motors with C-Face flange mounting
- 1.5 to 3.0 horsepower motor input range (verify exact motor specs with Boston Gear or system integrator)
- Multi-position mounting bases (Types A, B, C, D, E, F assembly options available)
- Industrial drive systems requiring right-angle torque transmission
Replaces / Drop-In Replacement For
- Earlier generation Boston Gear 700 Series 40:1 reducers with identical input/output configurations
- Verify specific OEM part numbers with your system integrator before ordering as housing variants exist within the 700 Series
Works With
- Klubersynth UH1 6-460 synthetic lubricant (factory-approved exclusive recommendation)
- Cast-iron shaft-mount and foot-mount base assemblies
- Standard industrial electric motors (1750 RPM input, single and three-phase AC)
- Coupling systems compatible with 7/8″ input and 1-1/8″ output shaft diameters
- Verify compatibility with your specific system integrator or Boston Gear technical support before ordering
