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  • Koyo B-812 Needle Roller Bearing, Full Complement Drawn Cup, Open, Inch, 1/2" ID, 11/16" OD, 3/4" Width, 5500rpm Maximum Rotational Speed
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by Koyo

Koyo B-812 Needle Roller Bearing, Full Complement Drawn Cup, Open, Inch, 1/2" ID, 11/16" OD, 3/4" Width, 5500rpm Maximum Rotational Speed

2 customer reviews

List Price: $10.00
Price: $5.25 & FREE Shipping on orders over $35. Details
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Specifications for this item
Brand Name Koyo
Part Number B-812
UPC 605790198199
Material Type Cageless
System of Measurement Inch
Bore Diameter 1/2  inches
Outside Diameter 11/16  inches
Overall Width 3/4  inches
Max Rotational Speed 5500  RPM
Specification Met ASTM F2162
EAN 0605790198199
Item Weight 0.48 ounces
Number of Items 1
UNSPSC Code 31171512

This Koyo full complement drawn cup needle roller bearing is suitable for a... Read full product description



Product Features

  • Drawn cup needle roller bearing for applications with high dynamic loads
  • Drawn steel outer shell (cup) has a reduced cross-section for use in restricted spaces
  • Full complement of rollers for higher radial load capacity than caged rollers
  • Through-hardened, high-carbon chromium steel rollers for heat tolerance and durability under heavy loads
  • Meets standard ASTM F2162 for quality assurance

Product Details

  • Product Dimensions: 6 x 6 x 6 inches ; 0.5 ounces
  • Shipping Weight: 0.8 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B007EDU0CY
  • Average Customer Review: 5.0 out of 5 stars  See all reviews (2 customer reviews)
  • Amazon Best Sellers Rank: #223,878 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
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Product Description

This Koyo full complement drawn cup needle roller bearing is suitable for applications with high dynamic loads. It has a smaller cross-section than a machined needle roller bearing for use in restricted mounting spaces. The full complement of rollers provides a higher radial load-carrying capacity than caged rollers. The needle rollers are made of through-hardened, high-carbon chromium steel for durability and heat tolerance, and have contoured ends to optimize the distribution of contact stress. This radial needle roller bearing meets ASTM International standard ASTM F2162 for quality assurance, and is used in various applications, such as automotive and truck transmissions, agricultural and construction equipment, pumps and compressors, and two-cycle engines, among others.

Roller bearings use rolling elements to maintain a separation between moving parts to reduce rotational friction and support radial and axial loads. These elements can be one of the following types: ball, cylindrical, spherical, barrel, needle, spindle, or tapered. Roller bearings can be open on both ends (a shaft can pass through) or open on one end and closed on the other. An open end can be sealed or shielded to protect the bearing from solid contaminants and moisture that could reduce its lifespan. If an end is sealed, the sealing component is an elastomer lip that contacts the shaft. If it is shielded, the shielding is a non-contact lip, usually made of metal. Rolling bearings are used in a range of applications from agricultural machinery to conveying equipment, robotics, dental equipment, elevators, rolling mills, ship rudder shafts, and aggregate crushers, among others.

Koyo Bearings USA manufactures needle roller bearings, bearing assemblies, and needle rollers for automotive and industrial applications. The company, founded in 2009, is headquartered in Canton, OH, and meets International Organization for Standardization (ISO) standards 14001 and TS 16949 for quality assurance.


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Most Helpful Customer Reviews

By Default Reality on October 22, 2013
Verified Purchase
I needed a replacement bearing with the dimensions of the the Koyo B-812. I couldn't find one locally, so I decided to check online. Various sites had bearings, but they were of unknown make (i.e. Chinese junk); while others had the Koyo but they were much more expensive than Amazon.com. I took a chance and ordered one from Amazon; it came exactly as described and I have since ordered more Koyos from Amazon.
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By walter j robison on May 24, 2015
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good
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