Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

SMITH BEARING Inner Ring: 1 7/8 in Bore, 2.248 in OD, 1.76 in Overall Wd, Alloy Steel - Needle Roller Bearing Inner Rings
SMITH BEARINGNeedle Roller Bearing Inner Rings

SMITH BEARING Inner Ring: 1 7/8 in Bore, 2.248 in OD, 1.76 in Overall Wd, Alloy Steel

The SMITH BEARING Inner Ring: 1 7/8 in Bore is an inch-system needle roller bearing inner ring, model IRR-1-7/8. It features a 1 7/8 in bore, 2.248 in OD, and 1.76 in overall width, constructed from alloy steel.

SKU 3G-OTH-102673

Also listed as: IRR178 · IRR 1 7 8 · IRR-1-7-8

Brand
SMITH BEARING
Item
Inner Ring: 1 7/8 in Bore, 2.248 in OD, 1.76 in Overall Wd, Alloy Steel
Category
Needle Roller Bearing Inner Rings
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 — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

SMITH BEARING
Manufacturer Part Number
IRR-1-7/8
Type
Alloy Steel, IRR-1-7/8
OD
2.248 in
Overall Wd
1.76 in
System of Measurement
Inch

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

SMITH BEARING Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SMITH BEARING Inner Ring: 1 7/8 in Bore is an inch-system needle roller bearing inner ring, model IRR-1-7/8. It features a 1 7/8 in bore, 2.248 in OD, and 1.76 in overall width, constructed from alloy steel.

Frequently Asked Questions

What is the SMITH BEARING Inner Ring IRR-1-7/8 used for?

The SMITH BEARING Inner Ring IRR-1-7/8 is used as a precision component in needle roller bearing assemblies. It provides a hardened raceway for needle rollers in industrial machinery, gearboxes, and conveyor systems where inch-dimension bearings are required.

What are the specifications of the SMITH BEARING Inner Ring IRR-1-7/8?

The SMITH BEARING Inner Ring IRR-1-7/8 has a 1 7/8 in bore, 2.248 in outer diameter, and 1.76 in overall width. It is made from alloy steel and uses the inch system of measurement. The manufacturer part number is IRR-1-7/8.

Where to buy the SMITH BEARING Inner Ring IRR-1-7/8 worldwide?

You can source the SMITH BEARING Inner Ring IRR-1-7/8 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.

How to select the correct SMITH BEARING inner ring for an application?

To select the correct SMITH BEARING inner ring, match the bore size to your shaft diameter, the outer diameter to the needle roller complement, and the overall width to the housing space. Verify the system of measurement (inch) and confirm the part number IRR-1-7/8 fits your assembly requirements.

Used in

Common applications for SMITH BEARING
Packaging machinery — SMITH BEARING MCR series stud cam followers for cam actuation in carton erectors and case sealers.
Conveyor systems — SMITH BEARING HR series heavy stud cam followers for roller guidance in belt conveyors and chain drives.
Automated assembly lines — SMITH BEARING BYR series yoke cam followers for linear motion guides in pick-and-place units.
Food processing equipment — SMITH BEARING HR-2-1/4-XB-SS-FG stainless steel cam followers for washdown conveyor systems.
Material handling — SMITH BEARING BCR-7/8-X non-metallic cam followers for low-noise roller tracks in sortation systems.
Industrial printing presses — SMITH BEARING MCRV-90-SB track rollers for web guiding and tension control mechanisms.

SMITH BEARING Products

3G Electric supplies SMITH BEARING needle roller bearing inner rings. 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
SMITH BEARING
SMITH BEARING
Alloy steel inner ring for needle roller bearings, inch series. Bore 1-7/16 in, outside diameter 1.749 in, overall width 1.26 in. Provides a hardened raceway for needle rollers in compact bearing arrangements. Used in gearboxes, pumps, and conveyor systems where radial load support is required
SMITH BEARING Inner Ring: 1 5/16 in Bore, 1.624 in OD, 1.01 in Overall Wd, Alloy Steel, IRR-1-5/16-1
SMITH BEARING
SMITH BEARING Inner Ring: 1 5/16 in Bore, 1.624 in OD, 1.01 in Overall Wd, Alloy Steel, IRR-1-5/16-1
SMITH BEARING
SMITH BEARING
SMITH BEARING Inner Ring: 1 9/16 in Bore, 1.998 in OD, 1.26 in Overall Wd, Alloy Steel, IRR-1-9/16-1
Alloy steel inner ring for needle roller bearings. Bore 1 11/16 in, outer diameter 1.998 in, overall width 1.26 in. Inch system. Provides a hardened raceway for needle rollers in applications such as gearboxes, pumps, and conveyor systems
SMITH BEARING
Alloy steel inner ring for needle roller bearings. Bore 1 11/16 in, outer diameter 1.998 in, overall width 1.26 in. Inch system. Provides a hardened raceway for needle rollers in applications such as gearboxes, pumps, and conveyor systems
SMITH BEARING
SMITH BEARING
SMITH BEARING Inner Ring: 1 1/2 in Bore, 1.749 in OD, 1.26 in Overall Wd, Alloy Steel, IRR-1-1/2
SMITH BEARING Inner Ring: 2 7/16 in Bore, 2.998 in OD, 1.76 in Overall Wd, Alloy Steel, IRR-2-7/16
SMITH BEARING
SMITH BEARING Inner Ring: 2 7/16 in Bore, 2.998 in OD, 1.76 in Overall Wd, Alloy Steel, IRR-2-7/16

More from SMITH BEARING

View all SMITH BEARING parts
Alloy steel inner ring for needle roller bearings, inch-system dimensions: 5/8 in bore, 0.874 in OD, 1.01 in overall width. Provides a hardened raceway for needle rollers in rotating machinery such as gearboxes, pumps, and industrial equipment requiring compact radial load support
SMITH BEARING
Alloy steel inner ring for needle roller bearings, inch-system dimensions: 5/8 in bore, 0.874 in OD, 1.01 in overall width. Provides a hardened raceway for needle rollers in rotating machinery such as gearboxes, pumps, and industrial equipment requiring compact radial load support
Alloy steel inner ring for needle roller bearings. Bore 6 in, outer diameter 7.248 in, overall width 3.015 in. Inch system. Used in gearboxes, pumps, and conveyor systems to provide a hardened raceway for needle rollers, supporting high radial loads in compact assemblies
SMITH BEARING
Alloy steel inner ring for needle roller bearings. Bore 6 in, outer diameter 7.248 in, overall width 3.015 in. Inch system. Used in gearboxes, pumps, and conveyor systems to provide a hardened raceway for needle rollers, supporting high radial loads in compact assemblies
Alloy steel inner ring for needle roller bearings, inch system. Bore 1 5/16 in, OD 1.624 in, overall width 1.26 in. Used in industrial machinery requiring compact rotary motion, such as gearboxes and pumps
SMITH BEARING
Alloy steel inner ring for needle roller bearings, inch system. Bore 1 5/16 in, OD 1.624 in, overall width 1.26 in. Used in industrial machinery requiring compact rotary motion, such as gearboxes and pumps
Alloy steel inner ring for needle roller bearing assemblies. Features a 5 1/2 in bore, 6.498 in outer diameter, and 3.015 in overall width. Inch-system component provides a hardened raceway for needle rollers in applications requiring high radial load capacity and compact design
SMITH BEARING
Alloy steel inner ring for needle roller bearing assemblies. Features a 5 1/2 in bore, 6.498 in outer diameter, and 3.015 in overall width. Inch-system component provides a hardened raceway for needle rollers in applications requiring high radial load capacity and compact design
SMITH BEARING
SMITH BEARING
This inner ring is a component for needle roller bearing assemblies, made from alloy steel. It has a 3/4 in bore, 0.999 in outer diameter, and 1.01 in overall width. The ring provides a precision raceway for needle rollers in applications such as gearboxes, pumps, and conveyor systems where compact radial load support is needed
This alloy steel inner ring is designed for use with compatible needle roller bearings in rotating machinery. It provides a precision raceway for needle rollers, supporting radial loads in compact assemblies such as gearboxes, pumps, and industrial transmissions. The inch-system component has a 1 3/16 in bore, 1.499 in OD, and 1.26 in overall width
SMITH BEARING
This alloy steel inner ring is designed for use with compatible needle roller bearings in rotating machinery. It provides a precision raceway for needle rollers, supporting radial loads in compact assemblies such as gearboxes, pumps, and industrial transmissions. The inch-system component has a 1 3/16 in bore, 1.499 in OD, and 1.26 in overall width
SMITH BEARING
SMITH BEARING
This alloy steel inner ring is designed for use in needle roller bearing assemblies, providing a hardened raceway for needle rollers. With a 13/16 in bore, 0.999 in OD, and 1.01 in overall width, it supports radial loads in compact spaces within industrial machinery, gearboxes, and conveyor systems. Inch-system measurement
Alloy steel inner ring for needle roller bearings, inch-system dimensions. Bore 1 9/16 in, outside diameter 1.874 in, overall width 1.26 in. Provides a hardened raceway for needle rollers in rotating machinery such as gearboxes, pumps, and industrial transmissions
SMITH BEARING
Alloy steel inner ring for needle roller bearings, inch-system dimensions. Bore 1 9/16 in, outside diameter 1.874 in, overall width 1.26 in. Provides a hardened raceway for needle rollers in rotating machinery such as gearboxes, pumps, and industrial transmissions