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Bearing NU311 ETN (AST)
Cylindrical Roller Bearings NU311 ETN
Bearing number : NU311 ETN
Size (mm) : 55x120x29
Brand : AST
Bore Diameter (mm) : 55
Outer Diameter (mm) : 120
Width (mm) : 29
Bearing dimensions and specification in AST catalogue:
(dimensions in mm)
Bearing Type - NU
Bore Dia (d) - 55.0000
Outer Dia (D) - 120.0000
Width (B) - 29.0000
Radius (min) (rs) - 2.000
Dynamic Load Rating (Cr) - 143,000
Static Load Rating (Cor) - 150,000
Max Speed (Grease) (X1000 RPM) - 5
Max Speed (Oil) (X1000 RPM) - 6
Max. Shaft Shoulder Dia. Inner (Li) - 70.5
Weight (g) - 1,500.00
Precision - RBEC 1
Standard Clearance - C0
Material - 52100 Chrome steel, or equivalent
Unless otherwise specified, the internal radial clearance is "C0" or "C Normal".
This bearing is also available with the HJ end plate for the inner race.
Suffix definitions are listed in the Nomenclature Technical document.
This bearing is also available with a retaining ring groove in the outer race, and it can be supplied with the ring (suffix NR) or without the ring (suffix N). Please see the Technical Information Sheet for the groove and ring dimensions.
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