Boston Gear 710-40-G Speed Reducer 40:1 Indirect Drive transmission fluid
Speed reducer with indirect drive and 40:1 ratio delivers 44 RPM output and 148 in-lb torque
- 40:1 ratio reduces output speed to 44 RPM
- Indirect drive input simplifies mounting in tight spaces
- Hardened worm gear delivers 148 in-lb torque
- Cast-iron housing with epoxy finish resists corrosion
- Tapered roller bearings support 150 lb overhung load
Speed Reducer 40:1 Indirect Drive
The Boston Gear 710-40-G is a worm-gear speed reducer designed for power-transmission applications requiring a fixed 40:1 reduction ratio. It accepts an indirect-drive input and delivers a maximum output speed of 44 RPM. The cast-iron housing with powder-coated epoxy finish houses hardened and ground steel gears on tapered roller bearings. This unit suits original-equipment builds or maintenance replacement where those exact parameters match the drivetrain design.
Gear Ratio 40:1 and Torque 148 in-lb
The single specification that determines fit is the 40:1 gear ratio combined with a maximum output torque of 148 in-lb at 0.16 hp input. If the driven equipment demands a different reduction or higher torque capacity, this reducer will not meet the requirement. Overhung load capacity is rated at 150 lb on the output shaft. Verify the shaft centreline height of 1.31 in and rotation direction needs against your layout before specifying.
California Proposition 65 Compliance Notice
The product carries a California Proposition 65 warning for chemicals known to cause cancer and reproductive harm. No accessories, mounting hardware, lubrication fluid or software are included in the shipment. The reducer ships as a standalone component ready for installation into the designated gearbox or machine frame. Procure any required oil, seals or couplings separately to complete the assembly.
How it compares
Measured against everything we stock in Transmission Fluid & Gear Oil, at today’s prices. Recalculated every night.
- Price $457.99
- Pricier than about 77% of the 118 comparable items (median $40.99).
Specifications
| Product | |
|---|---|
| Brand name | BOSTON GEAR |
Questions about this item
What does the 40:1 gear ratio deliver on the output shaft?
The 40:1 ratio reduces input speed to a maximum output of 44 RPM while providing up to 148 in-lb of torque.
How does the indirect drive input connect to a motor?
The indirect drive input accepts a coupling or belt pulley rather than a direct shaft mount, so the motor links through an external connection.
What mounting dimensions and bolt pattern does the cast-iron housing use?
The housing has a 1 in worm center distance and a 1.31 in base-to-center height for foot mounting on a flat surface.
More in Transmission Fluid & Gear Oil





