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Dynaroll Precision Miniature Ball Bearing, ABEC-3, Double Shielded, Flanged, Stainless Steel

Available in multiple versions

2 customer reviews

Price: $10.09
Product Specifications
Brand Name Dynaroll
Material Type Stainless Steel
UNSPSC Code 31171504

This double shielded Dynaroll precision miniature ball bearing is made of ... Read full product description

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Part Number Bore Diameter Outside Diameter Bearing Width String Max Rotational Speed Static Load Capacity Dynamic Load Capacity Part Number
The Amazon Standard Item Number (ASIN) uniquely identifies the item in the Amazon catalog.
Price Quantity
SFR1810ZZ A3 0.3125 inches 0.5 inches 0.1562 inches 4800 rpm 52 pounds 122 pounds B00634TQTS
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Product Features

  • Single row, deep-groove precision miniature ball bearing for limited-space applications requiring high accuracy, high speeds, and both axial and radial loads
  • Metal shields on both sides of the bearing keep the lubricant in and contaminants out
  • 400-series hardened martensitic stainless steel for better resistance to corrosion and high temperatures than AISI 52100 chrome steel
  • Stainless steel cage evenly spaces balls for reduced friction, vibration, and noise
  • CN (normal) radial clearance for applications where thermal expansion is not a factor

Product Details

  • Shipping Information: View shipping rates and policies
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B0064OUESO
  • Average Customer Review: 5.0 out of 5 stars  See all reviews (2 customer reviews)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Product Description

This double shielded Dynaroll precision miniature ball bearing is made of 400-series hardened martensitic stainless steel and has an Annular Bearing Engineers’ Committee (ABEC)-3 precision rating and a flanged outer ring. The single-row, deep-groove precision miniature ball bearing is suitable for limited-space applications requiring high accuracy, high speeds, and both axial and radial loads. The bearing has deep inner and outer races that conform to the balls that run in them, allowing higher speeds and creating lower friction than bearings with comparable-sized roller bearings. It has a metal shield on either side that is fastened to the outside ring and extends over the rolling elements. The shields assist in keeping out contaminants such as dirt and grime and also help to hold in lubricant applied during manufacturing. The inner and outer rings and balls are made of a 400-series martensitic stainless steel hardened to a minimum of C58 on the Rockwell hardness scale, providing better resistance to corrosion and high temperatures than American Iron and Steel Institute (AISI) 52100 chrome steel, and higher hardness and wear resistance than plain stainless steel. This bearing has a stainless-steel cage to prevent the balls from coming into contact with each other during use, reducing friction, vibration, and noise, and an external flange on the outer ring for easier mounting and axial positioning in the housing than straight bearings. It can be used to a maximum operating temperature of 121 degrees C/250 degrees F. The ball bearing has a CN (normal) radial internal clearance designation making it suitable for applications where the load and speeds do not result in thermal expansion. This clearance provides latitude for self-realignment and compensates for static and dynamic alignment errors. This bearing has an ABEC-3 rating for a higher standard of precision than ABEC-1 bearings. ABEC-rated ball bearings are manufactured to tight dimensional tolerances, making them useful in applications that require high accuracy, high rotational speeds, and increased operating efficiency. This ball bearing is for use in commercial and industrial applications including medical devices, radio controls, gearboxes, instrumentation, fishing reels, and small motors.

Rolling bearings use rolling elements to maintain the 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. All rolling bearings are open, shielded, or sealed. Sealed bearings are lubricated with oil or grease in the bearing factory, while open and shielded bearings are meant to be lubricated in place, with periodic reapplication of lubrication, based on use. The shield protects the working parts of the bearing from environmental debris that may be introduced and could reduce the ball bearing speed and lifespan. 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.

Dynaroll Corporation manufactures miniature bearings and ball bearings that meet International Organization for Standardization (ISO), Occupational Health and Safety Assessment Series (OHSAS), Production Part Approval Process (PPAP), and U.S. Food and Drug Administration (FDA) Critical standards for quality assurance. Founded in 1988, Dynaroll is based in Sylmar, California.

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Most Helpful Customer Reviews

By G.S. on February 24, 2013
Static Load Capacity: 505Bore Diameter: 0.5Part Number: SFR8ZZ A3Max Rotational Speed: 2000Outside Diameter: 1.125Dynamic Load Capacity: 880Bearing Width String: 0.3125 Verified Purchase
They're tough, work well in wet conditions, and seem to be lasting up to now (a few weeks after installation). As it says.
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By Elaine Williams on December 23, 2013
Static Load Capacity: 316Bore Diameter: 0.375Part Number: SFR6ZZ A3Max Rotational Speed: 3800Outside Diameter: 0.875Dynamic Load Capacity: 748Bearing Width String: 0.2812 Verified Purchase
Although 7 of them instead of only 6 were delivered to me from separate shipments, I'll keep the extra one for a spare.
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