We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

BOSTON GEAR Shaft Coupler Body: FC25 Coupling Size, 2 1/2 in Outside Dia, Inch - High-Torque Straight Jaw Coupling Hubs
BOSTON GEARHigh-Torque Straight Jaw Coupling Hubs

BOSTON GEAR Shaft Coupler Body: FC25 Coupling Size, 2 1/2 in Outside Dia, Inch

The BOSTON GEAR Shaft Coupler Body is a high-torque straight jaw coupling hub in FC25 coupling size, designed for inch keyed shaft types. It has a 2 1/2 in outside diameter and is identified by manufacturer part…

SKU 3G-OTH-146676

Also listed as: FC251 · FC25-1

Brand
BOSTON GEAR
Item
Shaft Coupler Body: FC25 Coupling Size, 2 1/2 in Outside Dia, Inch
Category
High-Torque Straight Jaw Coupling Hubs
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

BOSTON GEAR
Manufacturer Part Number
FC25 1
Type
Inch, For Keyed Shaft Type
Outside Dia
2 1/2 in

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The BOSTON GEAR Shaft Coupler Body is a high-torque straight jaw coupling hub in FC25 coupling size, designed for inch keyed shaft types. It has a 2 1/2 in outside diameter and is identified by manufacturer part number FC25 1.

Frequently Asked Questions

What is the BOSTON GEAR FC25 1 shaft coupler used for?

The BOSTON GEAR FC25 1 is a high-torque straight jaw coupling hub used to connect two rotating shafts in industrial power transmission systems. It accommodates keyed shafts and is common in conveyors, pumps, and gearboxes where misalignment compensation and torque transfer are required.

What are the specifications of the BOSTON GEAR FC25 1 coupling?

The BOSTON GEAR FC25 1 is a shaft coupler body with FC25 coupling size, 2 1/2 in outside diameter, inch dimensions, and is designed for keyed shaft types. It is a high-torque straight jaw coupling hub manufactured by BOSTON GEAR under MPN FC25 1.

Where to buy BOSTON GEAR FC25 1 coupling worldwide?

You can source the BOSTON GEAR FC25 1 coupling 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 part.

How to select the right BOSTON GEAR jaw coupling hub?

To select the correct BOSTON GEAR jaw coupling hub, match the coupling size (e.g., FC25), outside diameter (2 1/2 in), and shaft type (keyed) to your application's torque and misalignment requirements. Verify bore dimensions and consult the manufacturer's catalog for load 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 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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
BOSTON GEAR Shaft Coupler Body: FC25 Coupling Size, 2 1/2 in Outside Dia, Inch, For Keyed Shaft Type (MPN FC25 1-1/8)
BOSTON GEAR
BOSTON GEAR Shaft Coupler Body: FC25 Coupling Size, 2 1/2 in Outside Dia, Inch, For Keyed Shaft Type (MPN FC25 1-1/8)
BOSTON GEAR Shaft Coupler Body: FC25 Coupling Size, 2 1/2 in Outside Dia, Inch, For Keyed Shaft Type (MPN FC25 1-1/4)
BOSTON GEAR
BOSTON GEAR Shaft Coupler Body: FC25 Coupling Size, 2 1/2 in Outside Dia, Inch, For Keyed Shaft Type (MPN FC25 1-1/4)
BOSTON GEAR Shaft Coupler Body: FC25 Coupling Size, 2 1/2 in Outside Dia, Inch, For Keyed Shaft Type (MPN FC25-7/8)
BOSTON GEAR
BOSTON GEAR Shaft Coupler Body: FC25 Coupling Size, 2 1/2 in Outside Dia, Inch, For Keyed Shaft Type (MPN FC25-7/8)
BOSTON GEAR Shaft Coupler Body: FC25 Coupling Size, 2 1/2 in Outside Dia, Inch, For Keyed Shaft Type (MPN FC25-3/4)
BOSTON GEAR
BOSTON GEAR Shaft Coupler Body: FC25 Coupling Size, 2 1/2 in Outside Dia, Inch, For Keyed Shaft Type (MPN FC25-3/4)
BOSTON GEAR Shaft Coupler Body: FC45 Coupling Size, 4 1/2 in Outside Dia, Inch, For Keyed Shaft Type (MPN FC45 2)
BOSTON GEAR
BOSTON GEAR Shaft Coupler Body: FC45 Coupling Size, 4 1/2 in Outside Dia, Inch, For Keyed Shaft Type (MPN FC45 2)
BOSTON GEAR Shaft Coupler Body: FC12 Coupling Size, 1 1/4 in Outside Dia, Inch, For Keyed Shaft Type (MPN FC12-1/2)
BOSTON GEAR
BOSTON GEAR Shaft Coupler Body: FC12 Coupling Size, 1 1/4 in Outside Dia, Inch, For Keyed Shaft Type (MPN FC12-1/2)

More from BOSTON GEAR

View all BOSTON GEAR parts
This high-torque straight jaw coupling hub is sized FC38 with a 3 3/4 inch outside diameter, designed for inch-dimension keyed shafts. It connects rotating shafts in power transmission systems, accommodating misalignment and dampening vibration in applications such as conveyors, pumps, and gearboxes
BOSTON GEAR
This high-torque straight jaw coupling hub is sized FC38 with a 3 3/4 inch outside diameter, designed for inch-dimension keyed shafts. It connects rotating shafts in power transmission systems, accommodating misalignment and dampening vibration in applications such as conveyors, pumps, and gearboxes
Straight jaw coupling hub for connecting rotating shafts in power transmission systems. FC20 size with 2 in outside diameter and 3 11/16 in overall length. Suitable for applications requiring torque transfer and misalignment compensation, such as pumps, gearboxes, conveyors, and compressors
BOSTON GEAR
Straight jaw coupling hub for connecting rotating shafts in power transmission systems. FC20 size with 2 in outside diameter and 3 11/16 in overall length. Suitable for applications requiring torque transfer and misalignment compensation, such as pumps, gearboxes, conveyors, and compressors
Straight jaw coupling hub for connecting rotating shafts in power transmission systems. FC20 size, 2 in outside diameter, 3 11/16 in overall length. Suitable for applications such as conveyors, pumps, and gearboxes requiring torque transfer
BOSTON GEAR
Straight jaw coupling hub for connecting rotating shafts in power transmission systems. FC20 size, 2 in outside diameter, 3 11/16 in overall length. Suitable for applications such as conveyors, pumps, and gearboxes requiring torque transfer
High-torque straight jaw coupling hub for connecting rotating shafts in power transmission systems. Outside diameter 3 in, overall length 5 15/32 in. Suitable for applications requiring torque transfer and misalignment compensation, such as conveyors, pumps, and gearboxes
BOSTON GEAR
High-torque straight jaw coupling hub for connecting rotating shafts in power transmission systems. Outside diameter 3 in, overall length 5 15/32 in. Suitable for applications requiring torque transfer and misalignment compensation, such as conveyors, pumps, and gearboxes
Inch-sized high-torque straight jaw coupling hub for keyed shafts. Outside diameter 2 1/2 in. Used in power transmission systems to connect rotating shafts, compensating for minor misalignment. Suitable for industrial machinery, conveyors, pumps, and gearboxes
BOSTON GEAR
Inch-sized high-torque straight jaw coupling hub for keyed shafts. Outside diameter 2 1/2 in. Used in power transmission systems to connect rotating shafts, compensating for minor misalignment. Suitable for industrial machinery, conveyors, pumps, and gearboxes
BOSTON GEAR Shaft Coupler Body: FC30 Coupling Size, 3 in Outside Dia, 5 15/32 in Coupling Overall Lg (MPN FC30 1-3/8)
BOSTON GEAR
BOSTON GEAR Shaft Coupler Body: FC30 Coupling Size, 3 in Outside Dia, 5 15/32 in Coupling Overall Lg (MPN FC30 1-3/8)
BOSTON GEAR Shaft Coupler Body: FC45 Coupling Size, 4 1/2 in Outside Dia, Inch, For Keyed Shaft Type (MPN FC45 1-7/8)
BOSTON GEAR
BOSTON GEAR Shaft Coupler Body: FC45 Coupling Size, 4 1/2 in Outside Dia, Inch, For Keyed Shaft Type (MPN FC45 1-7/8)
BOSTON GEAR Shaft Coupler Body: FC30 Coupling Size, 3 in Outside Dia, 5 15/32 in Coupling Overall Lg (MPN FC30 1-1/4)
BOSTON GEAR
BOSTON GEAR Shaft Coupler Body: FC30 Coupling Size, 3 in Outside Dia, 5 15/32 in Coupling Overall Lg (MPN FC30 1-1/4)