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Bearing KP21B (AST)

Airframe Control Ball Bearings: Single and Double Row KP21B

Bearing number : KP21B

Brand : AST

Bore Diameter (mm) : 33,3502

Outer Diameter (mm) : 52,3875

Bearing dimensions and specification in AST catalogue:

(dimensions in inches)

Bearing Type - KPxxB

Bore Dia (d) - 1.3130

Outer Dia (D) - 2.0625

Outer Width (Bo) - 0.3750

Inner Width (Bi) - 0.4370

Dynamic Load Rating (Cr) - 4,290

Static Load Rating (Cor) - 9,840

Max. Shaft Shoulder Dia. Inner (Li) - 1.5

Ball Qty - 28

Ball Dia (Dw) - 0.1870

Max. shaft corner radius, or 45 deg. chamfer (ch1) - 0.024

Max. housing corner radius, or 45 deg. chamfer (ch) - 0.024

Material - 52100 Chrome steel or equivalent

The dynamic load rating given is for outer race rotation. The dynamic load rating for inner race rotation is 4590 pounds.

The static thrust load rating is 4400 pounds.

The bore diameter tolerance is +.0000 / -.0010".

The outside diameter tolerance is +.0000" / -.0010".

The tolerance for the inner race width and the outer race width is +.000" / -.005"

The load ratings listed for these bearings are determined by the formulas used specifically for airframe bearings. These ratings are not equivalent to ratings calculated from the ABMA formulas used for most antifriction bearing products.

This bearing is intended for commercial applications. You must notify the AST sales department contact at the time of your inquiry if the bearing will be used in an airworthy application.

The bearing has two removable seals made of woven fabric Teflon.

Tags :  AST