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BOSTON GEAR Speed Reducer: 5.1:1, 343 RPM, 5 hp Input Max, 840 in-lb Output Max, Round - Direct-Drive Parallel Speed Reducers
BOSTON GEARDirect-Drive Parallel Speed Reducers

BOSTON GEAR Speed Reducer: 5.1:1, 343 RPM, 5 hp Input Max, 840 in-lb Output Max, Round

The BOSTON GEAR Speed Reducer (SKU 3G-OTH-143595) is a direct-drive parallel speed reducer with a 5.1:1 ratio, 343 RPM output, 5 hp input max, and 840 in-lb output max. It features a round design and 180TC/210C frame…

SKU 3G-OTH-143595

Also listed as: F842B51KB9M1 · F842B 5 1K B9 M1 · F842B-5-1K-B9-M1

Brand
BOSTON GEAR
Item
Speed Reducer: 5.1:1, 343 RPM, 5 hp Input Max, 840 in-lb Output Max, Round
Category
Direct-Drive Parallel Speed Reducers
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Technical Specifications

BOSTON GEAR
Manufacturer Part Number
F842B-5.1K-B9-M1
Type
343 RPM, 840 in-lb Output Max, Round, 180TC/210C
Input Max
5 hp

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BOSTON GEAR Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The BOSTON GEAR Speed Reducer (SKU 3G-OTH-143595) is a direct-drive parallel speed reducer with a 5.1:1 ratio, 343 RPM output, 5 hp input max, and 840 in-lb output max. It features a round design and 180TC/210C frame (MPN F842B-5.1K-B9-M1).

Frequently Asked Questions

What is the BOSTON GEAR F842B-5.1K-B9-M1 speed reducer used for?

This BOSTON GEAR direct-drive parallel speed reducer is used to reduce motor speed and increase torque in industrial machinery such as conveyors, mixers, and packaging equipment. It handles up to 5 hp input and delivers 840 in-lb output torque at 343 RPM, making it suitable for moderate-duty power transmission applications.

What are the specifications of the BOSTON GEAR F842B-5.1K-B9-M1 speed reducer?

The BOSTON GEAR F842B-5.1K-B9-M1 is a direct-drive parallel speed reducer with a 5.1:1 ratio, 343 RPM output, 5 hp input max, and 840 in-lb output max. It has a round design and fits a 180TC/210C frame. The manufacturer part number is F842B-5.1K-B9-M1.

Where to buy the BOSTON GEAR F842B-5.1K-B9-M1 speed reducer worldwide?

You can source the BOSTON GEAR F842B-5.1K-B9-M1 speed reducer through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this BOSTON GEAR model.

How to select the correct BOSTON GEAR speed reducer for an application?

To select the correct BOSTON GEAR speed reducer, match the input horsepower (max 5 hp), output torque (840 in-lb), and ratio (5.1:1) to your motor and load requirements. Verify the frame size (180TC/210C) and mounting style (round). Consult the manufacturer's catalog for overhung load and service factor ratings.

Used in

Common applications for BOSTON GEAR
Material handling conveyors — Boston Gear worm gear speed reducers for belt drives
Packaging machinery — Boston Gear helical gear reducers for precise indexing
Food processing equipment — Boston Gear stainless steel speed reducers for washdown environments
Industrial pump drives — Boston Gear clamp collars for shaft coupling alignment
Mixer and agitator systems — Boston Gear oil-impregnated spider inserts for torque transmission
Automated assembly lines — Boston Gear mounting bases for horizontal reducer installation

BOSTON GEAR Products

3G Electric supplies BOSTON GEAR direct-drive parallel speed reducers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
BOSTON GEAR Speed Reducer: 5.1:1, 343 RPM, 3 hp Input Max, 531 in-lb Output Max, Round, 180TC/210C (MPN F832B-5.1K-B9-M1)
BOSTON GEAR
BOSTON GEAR Speed Reducer: 5.1:1, 343 RPM, 3 hp Input Max, 531 in-lb Output Max, Round, 180TC/210C (MPN F832B-5.1K-B9-M1)
BOSTON GEAR Speed Reducer: 10:1, 175 RPM, 3 hp Input Max, 1006 in-lb Output Max, Round, 180TC/210C (MPN F842B-10K-B9-M1)
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BOSTON GEAR Speed Reducer: 10:1, 175 RPM, 3 hp Input Max, 1006 in-lb Output Max, Round, 180TC/210C (MPN F842B-10K-B9-M1)
BOSTON GEAR Speed Reducer: 14:1, 125 RPM, 5 hp Input Max, 2519 in-lb Output Max, Round, 180TC/210C (MPN F862B-14K-B9-M1)
BOSTON GEAR
BOSTON GEAR Speed Reducer: 14:1, 125 RPM, 5 hp Input Max, 2519 in-lb Output Max, Round, 180TC/210C (MPN F862B-14K-B9-M1)
BOSTON GEAR Speed Reducer: 2.9:1, 603 RPM, 5 hp Input Max, 508 in-lb Output Max, Round, 180TC/210C (MPN F832B-2.9K-B9-M1)
BOSTON GEAR
BOSTON GEAR Speed Reducer: 2.9:1, 603 RPM, 5 hp Input Max, 508 in-lb Output Max, Round, 180TC/210C (MPN F832B-2.9K-B9-M1)
BOSTON GEAR Speed Reducer: 5.1:1, 343 RPM, 10 hp Input Max, 1742 in-lb Output Max, Round (MPN F862B-5.1K-B11-M1)
BOSTON GEAR
BOSTON GEAR Speed Reducer: 5.1:1, 343 RPM, 10 hp Input Max, 1742 in-lb Output Max, Round (MPN F862B-5.1K-B11-M1)
BOSTON GEAR Speed Reducer: 5.1:1, 343 RPM, 10 hp Input Max, 1726 in-lb Output Max, Round (MPN F872B-5.1K-B11-M1)
BOSTON GEAR
BOSTON GEAR Speed Reducer: 5.1:1, 343 RPM, 10 hp Input Max, 1726 in-lb Output Max, Round (MPN F872B-5.1K-B11-M1)

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Direct-drive parallel speed reducer with 45:1 ratio, 38 RPM output, 0.75 hp input max, and 1180 in-lb output max. Features a 56C frame and any-angle mounting. Suitable for conveyors, material handling, and packaging equipment
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This direct-drive parallel speed reducer provides a 50:1 reduction ratio, with a maximum input of 0.75 hp and output torque up to 1280 in-lb at 35 RPM. It features a 56C input flange and supports any-angle mounting. Typical applications include conveyors, material handling systems, and packaging equipment where speed reduction and torque multiplication are required
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This direct-drive parallel speed reducer provides a 50:1 reduction ratio, with a maximum input of 0.75 hp and output torque up to 1280 in-lb at 35 RPM. It features a 56C input flange and supports any-angle mounting. Typical applications include conveyors, material handling systems, and packaging equipment where speed reduction and torque multiplication are required
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BOSTON GEAR Speed Reducer: 2.9:1, 603 RPM, 10 hp Input Max, 972 in-lb Output Max, Round, 210TC/250UC (MPN F862B-2.9K-B11-M1)
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BOSTON GEAR Speed Reducer: 10:1, 175 RPM, 1.5 hp Input Max, 524 in-lb Output Max, 140TC/180C (MPN F832B-10K-B7-M1)
BOSTON GEAR Speed Reducer: 10:1, 175 RPM, 7.5 hp Input Max, 2548 in-lb Output Max, Round (MPN F862B-10K-B11-M1)
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BOSTON GEAR Speed Reducer: 10:1, 175 RPM, 7.5 hp Input Max, 2548 in-lb Output Max, Round (MPN F862B-10K-B11-M1)
BOSTON GEAR Speed Reducer: 14:1, 125 RPM, 2 hp Input Max, 988 in-lb Output Max, Round, 140TC/180C (MPN F842B-14K-B7-M1)
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BOSTON GEAR Speed Reducer: 14:1, 125 RPM, 2 hp Input Max, 988 in-lb Output Max, Round, 140TC/180C (MPN F842B-14K-B7-M1)
BOSTON GEAR Speed Reducer: 63:1, 27 RPM, 1.5 hp Input Max, 3027 in-lb Output Max, 140TC/180C (MPN F862B-63K-B7-M1)
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