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KOYO Needle Roller Bearing: B, 3012, 1 7/8 in Bore, 2 1/4 in OD, Full Complement - Drawn-Cup Needle Roller Bearings
KOYODrawn-Cup Needle Roller Bearings

KOYO Needle Roller Bearing: B, 3012, 1 7/8 in Bore, 2 1/4 in OD, Full Complement

The KOYO B-3012 is a drawn-cup needle roller bearing with a single row and full complement of rollers. It has a 1 7/8 in bore and a 2 1/4 in OD, is open, and made of alloy steel. This inch-system bearing is…

SKU 3G-OTH-107945

Also listed as: B3012 · B 3012

Brand
KOYO
Item
Needle Roller Bearing: B, 3012, 1 7/8 in Bore, 2 1/4 in OD, Full Complement
Category
Drawn-Cup Needle Roller Bearings
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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

KOYO
Manufacturer Part Number
B-3012
Type
3012, Full Complement, Open, Alloy Steel
Bore
1 7/8 in
OD
2 1/4 in
Bearing Design
B
Number of Rows
One
Full Complement
Yes
System of Measurement
Inch
Bearing Industry Number
3012

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

Product Description

The KOYO B-3012 is a drawn-cup needle roller bearing with a single row and full complement of rollers. It has a 1 7/8 in bore and a 2 1/4 in OD, is open, and made of alloy steel. This inch-system bearing is identified by industry number 3012.

Frequently Asked Questions

What is the KOYO B-3012 needle roller bearing used for?

The KOYO B-3012 drawn-cup needle roller bearing is used in applications requiring high radial load capacity in a compact, inch-dimension envelope. Its full complement of rollers maximizes load rating, making it suitable for gearboxes, pumps, and industrial machinery where space is limited.

What are the specifications of the KOYO B-3012 bearing?

The KOYO B-3012 is a single-row, full-complement drawn-cup needle roller bearing with a 1 7/8 in bore and 2 1/4 in OD. It is open, made of alloy steel, and uses the inch system. The bearing design is B, and the industry number is 3012.

Where to buy KOYO B-3012 bearings worldwide?

3G Electric supplies the KOYO B-3012 needle roller bearing to customers worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this bearing to your facility. Contact us for pricing and lead time on your order.

How to select the right KOYO needle roller bearing for an application?

To select the correct KOYO needle roller bearing, match the bore and OD dimensions to your shaft and housing. Consider load type and speed; full-complement designs like the B-3012 offer higher radial capacity but lower speed limits. Verify the inch system and industry number 3012 for interchangeability.

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 drawn-cup needle roller bearings. 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
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