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BOSTON GEAR High-Torque Straight Jaw Coupling Hub, FC45 1-7/8 - High-Torque Straight Jaw Coupling Hubs
BOSTON GEARHigh-Torque Straight Jaw Coupling Hubs

BOSTON GEAR High-Torque Straight Jaw Coupling Hub, FC45 1-7/8

The BOSTON GEAR FC45 Shaft Coupler Body is a high-torque straight jaw coupling hub in inch size, designed for keyed shaft types. It has a 4 1/2 in outside diameter and is identified by manufacturer part number FC45…

SKU 3G-OTH-146659

Also listed as: FC45178 · FC45 1 7 8 · FC45-1-7-8

Brand
BOSTON GEAR
Item
High-Torque Straight Jaw Coupling Hub, FC45 1-7/8
Part Number
FC45 1-7/8
Category
High-Torque Straight Jaw Coupling Hubs
Available to Order
Also known as:FC45 1-7/8BOSTON GEAR
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Technical Specifications

BOSTON GEAR
Manufacturer Part Number
FC45 1-7/8
Type
Inch, For Keyed Shaft Type
Outside Dia
4 1/2 in

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

Product Description

The BOSTON GEAR FC45 Shaft Coupler Body is a high-torque straight jaw coupling hub in inch size, designed for keyed shaft types. It has a 4 1/2 in outside diameter and is identified by manufacturer part number FC45 1-7/8.

Frequently Asked Questions

What is a BOSTON GEAR FC45 shaft coupler used for?

The BOSTON GEAR FC45 straight jaw coupling hub connects two rotating shafts in power transmission systems, compensating for minor misalignment while transmitting torque. It is commonly used in industrial machinery, conveyors, pumps, and gearboxes across machining, material handling, and other plant-floor applications.

What are the specifications of the BOSTON GEAR FC45 1-7/8 coupling?

This BOSTON GEAR FC45 coupling hub has a 4 1/2 in outside diameter, fits inch keyed shafts, and is part of the high-torque straight jaw coupling series. The manufacturer part number is FC45 1-7/8. It is designed for reliable torque transmission in industrial power transmission systems.

Where to buy BOSTON GEAR FC45 couplings worldwide?

3G Electric supplies BOSTON GEAR FC45 couplings worldwide, handling full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source genuine parts across 14 departments, including power transmission. Contact us for pricing and lead time on this coupling hub.

How to select the right BOSTON GEAR jaw coupling hub?

To select the correct BOSTON GEAR jaw coupling hub, match the outside diameter and bore size to your shaft dimensions, and confirm the coupling type (straight jaw for high torque). Verify shaft keyway size and ensure the hub material suits your operating environment. Consult a power transmission specialist for application-specific guidance.

Used in

Common applications for BOSTON GEAR
Conveyor systems — Boston Gear FC38 polyurethane spider insert (XFCA38) for torque transmission and misalignment compensation.
Pump drives — Boston Gear FC15 oil-impregnated spider insert (XFCBB15) to dampen vibration in continuous-duty pump applications.
Mixers and agitators — Boston Gear speed reducers with cast iron housings for speed reduction and torque multiplication.
Packaging machinery — Boston Gear FC12 synthetic rubber spider insert (XFCR12) for shock absorption in start-stop cycles.
Fans and blowers — Boston Gear FC45 oil-impregnated spider insert (XFCBB45) for high-torque power transmission.
Material handling — Boston Gear shaft-mounted speed reducers for conveyor and bulk handling drive systems.
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BOSTON GEAR Products

3G Electric supplies BOSTON GEAR high-torque straight jaw coupling hubs. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Inch-series straight jaw coupling hub for keyed shafts, with 4 1/2 in outside diameter. Used in power transmission systems to connect rotating shafts in pumps, compressors, conveyors, and gearboxes, accommodating misalignment while transmitting torque
BOSTON GEAR
Inch-series straight jaw coupling hub for keyed shafts, with 4 1/2 in outside diameter. Used in power transmission systems to connect rotating shafts in pumps, compressors, conveyors, and gearboxes, accommodating misalignment while transmitting torque

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