KOYO Needle Roller Bearing: M-1, 661, 3/8 in Bore, 9/16 in OD, Full Complement
The KOYO M-1 is a drawn-cup needle roller bearing, part number M-661, with a single row and full complement of rollers. It has a 3/8-inch bore and a 9/16-inch outer diameter, is open and made of alloy steel, and uses…
SKU 3G-OTH-103558
Also listed as: M661 · M 661
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.
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Product Description
The KOYO M-1 is a drawn-cup needle roller bearing, part number M-661, with a single row and full complement of rollers. It has a 3/8-inch bore and a 9/16-inch outer diameter, is open and made of alloy steel, and uses inch-system measurements.
Frequently Asked Questions
What is the KOYO M-661 needle roller bearing used for?
The KOYO M-661 drawn-cup needle roller bearing is used in applications requiring high load capacity in a compact radial space, such as automotive transmissions, gearboxes, and industrial machinery. Its full complement design maximizes roller count for higher load ratings.
What are the specifications of the KOYO M-661 bearing?
The KOYO M-661 is a single-row, full-complement drawn-cup needle roller bearing with a 3/8-inch bore and 9/16-inch outer diameter. It is open, made of alloy steel, and uses inch-system measurements. The bearing design is M-1 with industry number 661.
Where to buy KOYO M-661 bearings worldwide?
KOYO M-661 bearings are available to order 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 KOYO drawn-cup needle roller bearing?
To select the correct KOYO drawn-cup needle roller bearing, verify the bore size (3/8 in), outer diameter (9/16 in), and system of measurement (inch). Ensure the bearing design (M-1) and full complement configuration match your application's load and speed requirements. Consult KOYO specifications for fit and tolerance.
Used in
Common applications for KOYOKOYO 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.
