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KOYO M-12121 Drawn-Cup Needle Roller Bearing - Drawn-Cup Needle Roller Bearings
KOYODrawn-Cup Needle Roller Bearings

KOYO M-12121 Drawn-Cup Needle Roller Bearing

The KOYO M-1 is a drawn-cup needle roller bearing with a one-row, full-complement design. It has a 3/4 in bore and 1 in OD, is open, and made of alloy steel. This inch-system bearing is identified by industry number…

SKU 3G-OTH-105854

Also listed as: M12121 · M 12121

Brand
KOYO
Item
M-12121 Drawn-Cup Needle Roller Bearing
Category
Drawn-Cup Needle Roller Bearings
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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
M-12121
Type
12121, Full Complement, Open, Alloy Steel
Bore
3/4 in
OD
1 in
Bearing Design
M-1
Number of Rows
One
Full Complement
Yes
System of Measurement
Inch
Bearing Industry Number
12121

Technical Documents

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

Product Description

The KOYO M-1 is a drawn-cup needle roller bearing with a one-row, full-complement design. It has a 3/4 in bore and 1 in OD, is open, and made of alloy steel. This inch-system bearing is identified by industry number 12121 and manufacturer part number M-12121.

Frequently Asked Questions

What is the KOYO M-12121 needle roller bearing used for?

The KOYO M-12121 drawn-cup needle roller bearing is used in industrial machinery and automotive applications where space is limited and high radial load capacity is needed. Its full-complement design maximizes load-carrying rollers, making it suitable for gearboxes, pumps, and conveyor systems.

What are the specifications of the KOYO M-12121 bearing?

The KOYO M-12121 is a one-row, full-complement drawn-cup needle roller bearing with a 3/4 in bore and 1 in OD. It is open, made of alloy steel, and uses the inch system. The bearing design is M-1, and the industry number is 12121.

Where to buy KOYO M-12121 bearings worldwide?

You can source KOYO M-12121 bearings worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this part.

How to select the correct KOYO drawn-cup needle roller bearing?

To select the correct KOYO drawn-cup needle roller bearing, verify the bore size (3/4 in), OD (1 in), and system of measurement (inch). Confirm the full-complement design for maximum load capacity. Always cross-reference the industry number 12121 and manufacturer part number M-12121 with your application requirements.

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.
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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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KOYO M-8101 is a one-row, full-complement drawn-cup needle roller bearing with a 1/2 in bore and 11/16 in OD. It is open, made of alloy steel, and uses the inch system. This bearing is suitable for applications requiring high radial load capacity in limited spaces, such as gearboxes, pumps, and conveyor systems
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Single-row drawn-cup needle roller bearing with full complement of rollers for maximum radial load capacity in a compact design. Open configuration, made of alloy steel. Inch-system dimensions: 7/8 in bore, 1 3/16 in outer diameter. Suitable for applications such as gearboxes, pumps, and material handling equipment where space is constrained
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The KOYO BH-1816 is a one-row, full-complement drawn-cup needle roller bearing with a 1 1/8 in bore and 1 1/2 in OD. It is open and made of alloy steel, designed for applications where radial space is limited, such as gearboxes, pumps, and conveyor systems
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The KOYO BH-1816 is a one-row, full-complement drawn-cup needle roller bearing with a 1 1/8 in bore and 1 1/2 in OD. It is open and made of alloy steel, designed for applications where radial space is limited, such as gearboxes, pumps, and conveyor systems
This KOYO BH-1612 is a one-row, full-complement drawn-cup needle roller bearing with a 1 in bore and 1 5/16 in OD. It is open and made of alloy steel. The inch-system bearing is commonly used in applications where radial space is limited, such as gearboxes, pumps, and conveyor systems
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This KOYO BH-1612 is a one-row, full-complement drawn-cup needle roller bearing with a 1 in bore and 1 5/16 in OD. It is open and made of alloy steel. The inch-system bearing is commonly used in applications where radial space is limited, such as gearboxes, pumps, and conveyor systems

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Single-row drawn-cup needle roller bearing with full complement design for maximum radial load capacity. Open configuration, made of alloy steel. Inch dimensions: 1 in bore, 1 1/4 in outer diameter. Suitable for applications requiring compact radial support such as gearboxes, pumps, and material handling equipment
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Single-row drawn-cup needle roller bearing with full complement of rollers for maximum radial load capacity in compact inch-dimension envelopes. Bore 1 7/8 in, OD 2 1/4 in, open design, alloy steel construction. Suitable for gearboxes, pumps, and industrial machinery where space is limited
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