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Bearing HK0408 (AST)
Needle Roller Bearings - Metric Series HK0408
Bearing number : HK0408
Size (mm) : 4x8x8
Brand : AST
Bore Diameter (mm) : 4
Outer Diameter (mm) : 8
Width (mm) : 8
Bearing dimensions and specification in AST catalogue:
(dimensions in mm)
Bearing Type - Cage Retained Rollers
Outer Dia (D) - 8.0000
Width (B) - 8.0000
Dynamic Load Rating (Cr) - 1,780
Static Load Rating (Cor) - 1,310
Max Speed (Grease) (X1000 RPM) - 41,000
Shaft (Fw) - 4.000
Weight (g) - 2.00
Material - Drawn cup: Hardened carbon steel alloy, Rollers - 52100 Chrome steel or equivalent
Some sizes are available with a closed end.
The bearing must be used with a hardened inner ring, or a hardened shaft.
Some sizes are available as full complement grease retained roller or mechanically retainer roller designs.
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