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

3G Electric
RFQ CartGet a QuoteSign inSign up
KOYO IR-121616 Needle Roller Bearing Inner Ring - Needle Roller Bearing Inner Rings
KOYONeedle Roller Bearing Inner Rings

KOYO IR-121616 Needle Roller Bearing Inner Ring

The KOYO IR-121616 is an inch-system needle roller bearing inner ring made of alloy steel. It has a 3/4 in bore, a 1 in OD, and a 1 in overall width. This component is designed for use with compatible needle roller…

SKU 3G-OTH-101816

Also listed as: IR121616 · IR 121616

Brand
KOYO
Item
IR-121616 Needle Roller Bearing Inner Ring
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

KOYO
Manufacturer Part Number
IR-121616
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

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

Product Description

The KOYO IR-121616 is an inch-system needle roller bearing inner ring made of alloy steel. It has a 3/4 in bore, a 1 in OD, and a 1 in overall width. This component is designed for use with compatible needle roller bearings.

Frequently Asked Questions

What is the KOYO IR-121616 inner ring used for?

The KOYO IR-121616 is a needle roller bearing inner ring used in industrial machinery and automotive applications. It provides a precision raceway for needle rollers, supporting radial loads in compact assemblies such as gearboxes, pumps, and conveyors.

What are the specifications of the KOYO IR-121616?

The KOYO IR-121616 is an inch-system needle roller bearing inner ring made of alloy steel. It has a 3/4 in bore, a 1 in OD, and a 1 in overall width. The manufacturer part number is IR-121616.

Where to buy the KOYO IR-121616 worldwide?

3G Electric supplies the KOYO IR-121616 needle roller bearing inner ring worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to select the correct KOYO inner ring for a needle roller bearing?

To select the correct KOYO inner ring, match the bore, OD, and width to your bearing assembly. The IR-121616 has a 3/4 in bore, 1 in OD, and 1 in width. Verify shaft and housing dimensions, and ensure compatibility with the needle roller complement.

Used in

Common applications for KOYO
Automotive transmissions — KOYO drawn-cup needle roller bearings (B-44) for gear support in compact gearbox assemblies.
Conveyor systems — KOYO heavy-duty needle roller bearings (HJ-202820) for radial load handling in roller conveyors.
Printing machinery — KOYO needle roller thrust bearings (NTA-3648) for axial positioning of rotating cylinders.
Industrial pumps — KOYO thrust bearing washers (TRD-3648) for axial load distribution in pump shafts.
Indexing tables — KOYO single-direction clutch and bearing assemblies (FCB-20) for precise indexing and overrunning control.
Material handling equipment — KOYO drawn-cup needle roller bearings (BH-2020) for compact wheel or roller supports.

KOYO Products

3G Electric supplies KOYO 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
KOYO Inner Ring: 1 3/4 in Bore, 2.25 in OD, 1.5 in Overall Wd, Alloy Steel, IR-283624
KOYO
KOYO Inner Ring: 1 3/4 in Bore, 2.25 in OD, 1.5 in Overall Wd, Alloy Steel, IR-283624
KOYO B-1110 is a single-row, full complement drawn-cup needle roller bearing with an 11/16 in bore and 7/8 in OD. It is open and made of alloy steel. This inch-system bearing is suitable for applications where radial space is limited, such as gearboxes, pumps, and conveyor systems
KOYO
KOYO B-1110 is a single-row, full complement drawn-cup needle roller bearing with an 11/16 in bore and 7/8 in OD. It is open and made of alloy steel. This inch-system bearing is suitable for applications where radial space is limited, such as gearboxes, pumps, and conveyor systems
One-row, full-complement drawn-cup needle roller bearing with inch-system measurement. Open design. Bore 1 1/2 in, OD 1 7/8 in. Industry number 24161. Suitable for applications with radial space constraints such as gearboxes, pumps, and conveyor systems
KOYO
One-row, full-complement drawn-cup needle roller bearing with inch-system measurement. Open design. Bore 1 1/2 in, OD 1 7/8 in. Industry number 24161. Suitable for applications with radial space constraints such as gearboxes, pumps, and conveyor systems
Single-row drawn-cup needle roller bearing with full complement design for maximum roller count. Bore 3/8 in, OD 9/16 in, open configuration, alloy steel construction. Suitable for compact radial spaces requiring high load capacity, such as transmissions, gearboxes, and pumps
KOYO
Single-row drawn-cup needle roller bearing with full complement design for maximum roller count. Bore 3/8 in, OD 9/16 in, open configuration, alloy steel construction. Suitable for compact radial spaces requiring high load capacity, such as transmissions, gearboxes, and pumps

More from KOYO

View all KOYO parts →
The KOYO IR-162016 is an inch-system needle roller bearing inner ring made of alloy steel. It has a 1 in bore, 1.25 in outside diameter, and 1 in overall width. This inner ring provides a precision raceway for needle rollers in rotating assemblies such as gearboxes, pumps, and industrial machinery
KOYO
The KOYO IR-162016 is an inch-system needle roller bearing inner ring made of alloy steel. It has a 1 in bore, 1.25 in outside diameter, and 1 in overall width. This inner ring provides a precision raceway for needle rollers in rotating assemblies such as gearboxes, pumps, and industrial machinery
KOYO Inner Ring: 1/2 in Bore, 0.75 in OD, 0.765 in Overall Wd, Alloy Steel, IR-812
KOYO
KOYO Inner Ring: 1/2 in Bore, 0.75 in OD, 0.765 in Overall Wd, Alloy Steel, IR-812
The KOYO IR-1212 is an inch-system needle roller bearing inner ring with a 3/4 in bore, 1 in OD, and 0.765 in overall width, made from alloy steel. It provides a hardened raceway surface for compatible needle roller bearings in rotating or oscillating applications, commonly used in industrial machinery, gearboxes, and automotive drivetrains where space is limited and high load capacity is required
KOYO
The KOYO IR-1212 is an inch-system needle roller bearing inner ring with a 3/4 in bore, 1 in OD, and 0.765 in overall width, made from alloy steel. It provides a hardened raceway surface for compatible needle roller bearings in rotating or oscillating applications, commonly used in industrial machinery, gearboxes, and automotive drivetrains where space is limited and high load capacity is required
Alloy steel inner ring for needle roller bearings. Bore diameter 1 1/8 in, outside diameter 1.375 in, overall width 1.015 in. Inch-system component used as a raceway in rotating assemblies such as gearboxes, pumps, and industrial machinery
KOYO
Alloy steel inner ring for needle roller bearings. Bore diameter 1 1/8 in, outside diameter 1.375 in, overall width 1.015 in. Inch-system component used as a raceway in rotating assemblies such as gearboxes, pumps, and industrial machinery
Alloy steel inner ring for needle roller bearings, with 1.5 in outside diameter and 1.265 in overall width. Provides a hardened raceway for needle rollers in rotating assemblies. Used in gearboxes, pumps, and material handling equipment where compact bearing arrangements support radial loads
KOYO
Alloy steel inner ring for needle roller bearings, with 1.5 in outside diameter and 1.265 in overall width. Provides a hardened raceway for needle rollers in rotating assemblies. Used in gearboxes, pumps, and material handling equipment where compact bearing arrangements support radial loads
Alloy steel inner ring for needle roller bearings, with a 1 in bore, 1.25 in OD, and 1.015 in overall width. Designed to serve as a raceway in rotating machinery such as gearboxes, pumps, and conveyors. Inch-system component
KOYO
Alloy steel inner ring for needle roller bearings, with a 1 in bore, 1.25 in OD, and 1.015 in overall width. Designed to serve as a raceway in rotating machinery such as gearboxes, pumps, and conveyors. Inch-system component
This KOYO inner ring is a component for needle roller bearings, made from alloy steel. It has an outer diameter of 1.5 in and an overall width of 1.015 in, designed for inch-system applications. The ring provides a hardened raceway for needle rollers, supporting radial loads in compact assemblies such as gearboxes, pumps, and conveyor systems
KOYO
This KOYO inner ring is a component for needle roller bearings, made from alloy steel. It has an outer diameter of 1.5 in and an overall width of 1.015 in, designed for inch-system applications. The ring provides a hardened raceway for needle rollers, supporting radial loads in compact assemblies such as gearboxes, pumps, and conveyor systems
Needle roller bearing inner ring made of alloy steel. Features a 5/8 in bore, 0.875 in outside diameter, and 1.015 in overall width. Inch-system component designed to provide a hardened raceway for needle rollers in radial load applications
KOYO
Needle roller bearing inner ring made of alloy steel. Features a 5/8 in bore, 0.875 in outside diameter, and 1.015 in overall width. Inch-system component designed to provide a hardened raceway for needle rollers in radial load applications