F6902-2RS (15x28x7 mm）Hybrid Ceramic Flange Bearing Si3N4 Ball Bearings F6902RS

Description

WHAT IS A HYBEID CERAMIC BEARING?
A ceramic hybrid bearing is a combination of ceramic balls and bearing quality steel rings.
Which combine hardened steel rings with rolling elements made of high-performance ceramic materials, are an increasingly popular option for demanding applications.
TECHNICAL SPECS
Model: F6902 RS
Structure: Deep Groove Ball
Material: Hybrid Ceramic
Bore Dia (d): 15 mm
Outer Dia (D): 28
mm
Width (B): 7
mm
Closures: Sealed  (2RS)
Lubrication: Grease
Clearance: C0
Dynamic Load Rating (Cr) (Newtons): 4321
Static Load Rating (Cor) (Newtons): 2259
Weight: 0.018 kg
Quantity: 1 Lot = 1 PC
Special Note:
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1, Sometimes the cages will be different.
eg.: 67 series thin-walled bearings, because the inner wall is very thin, will use the crown-shaped iron cage.
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2, the grease and sealed are accept custom-made, so sometimes there are different colors of the rubber sealed.
If you mind the sealed color, please contact us.
We'll confirm the stock for you.
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3, The standard clearance of bearings is ISO standard C0, the United States standard K25, the clearance value is 3-18um;
If you have special requirements for swinging, please contact us before purchasing to confirm.
BEARING STRUCTURE
52100 Chrome Steel  Outer Ring & Inner Ring +
Si3N4 Ceramic Balls +
Nylon Cage +
Grease + Sealed =
HYBID CERAMIC BEARINGS
BEARING EXPERIMENTAL DATA
THE HISTORY OF HYBRID CERAMIC BEARING
The first time I knew the application of hybrid ceramic bearings was Jacob Csizmadia in 1998 world record for 24 hour in line skating.
A major factor in achieving the new record of 505 km was that he had, in cooperation with bearing manufacturers SKF, replaced the traditional steel balls in the skates' bearings with ceramic balls.
In 2004, Jacob Csizmadia founded a ceramicspeed company specializing in ceramic bearing applications.
Ceramic balls manufactured from Silicon Nitride were invented in the 1970's, and were first utilised on a large scale by NASA in the early 1990's.
Several years later ceramic ball bearings also entered usage in Formula 1 motorsport, and a small number of bearing manufacturers began producing hybrid bearings with ceramic balls for use in electrical motors.
F A Q
1. Why do the bearings I received have shaking?
The clearance of the bearing is related to the play. The default is the standard C0 clearance, which is usually 3-18um. The corresponding principle is shown in the figure below. If you don't need to shake, please choose C2 small clearance bearing. If you have any questions, please contact us before purchasing.
2. What is the accuracy of ABEC-1?
ABEC is the American ANSI standard. The corresponding German DIN standard and international ISO standard are as follows:
3. Do you provide logistics tracking information?
Yes, all our products provide full logistics tracking. And the products you buy are all new. We will buy transportation insurance for you. If the product is damaged or lost during transportation, you can get paid.
On Feb-25-20 at 19:42:36 PST, seller added the following information: