Boston F721-10-B5-G

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Long recognized as a pioneer among OEM and MRO manufacturers, Boston Gear has been producing dependable products since 1877 – and at the top of the list is our 700 Series worm gear speed reducer. Our 700 Series is known throughout the industry for its durable, efficient, and trouble-free performance. And with our Reducer Express™ service, we’ll ship any of our 15 million different speed reducer combinations, in stock or not, by air within 24 hours – or we’ll pay the freight. To find out how to incorporate Boston Gear’s world-class reputation into your designs overnight, go to BostSpec2, our specification and design center.


700 Series Worm Gear Speed Reducers

• 6 New Bore Sizes Ranging from 2” to 3 7/16”
• Reduction of Drivetrain Components through Shaft Mounting Flexibility
• Backwards compatible with 700 Series’ Industry-Standard Mounting Dimensions
• Larger Output Bearings for Greater Rigidity
• Output Torque more than Doubles as Compared with 738 Center Distance
• Good for Heavy Duty Conveyor Systems
• Good for Large Shaft Mount Applications
• Double Reduction Ratios also Available

Technical Specs

Maximum Input Horsepower:    2.34 @ 1,750 RPM hp
Ratio:    10:1
NEMA / IEC Frame Size:    56C
Input Type:    C-Face Quilled
Output Type:    Solid Shaft
Output Direction:    Right
Input Size:    5/8″
Output Size:    1″
Center Distance:    2.06″
Reduction:    Single
Manufacturer Reducer Size:    721
Maximum Output RPM:    175 @ 1,750 RPM RPM
Maximum Output Torque:    968 @ 100 RPM in·lb
Housing Material:    Cast Iron
Overhung Load Capacity:    700 lb
Housing Dimensions:    6 x 3.81 x 6.38″
Mounting Type:    No Base
Standards Met:    AGMA

Click on the links below to see Drawings and Specs:


BostonGear-Worm Helical Bevel Gear Drives Catalog

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