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Bearing B544DD (AST)

Airframe Control Ball Bearings: Single and Double Row B544DD

Bearing number : B544DD

Brand : AST

Bore Diameter (mm) : 46,0375

Outer Diameter (mm) : 57,15

Bearing dimensions and specification in AST catalogue:

(dimensions in inches)

Bearing Type - BxxxDD

Bore Dia (d) - 1.8125

Outer Dia (D) - 2.2500

Outer Width (Bo) - 0.2500

Inner Width (Bi) - 0.2810

Dynamic Load Rating (Cr) - 2,220

Static Load Rating (Cor) - 7,980

Max. Shaft Shoulder Dia. Inner (Li) - 2.0

Ball Qty - 51

Ball Dia (Dw) - 0.1250

Max. shaft corner radius, or 45 deg. chamfer (ch1) - 0.015

Max. housing corner radius, or 45 deg. chamfer (ch) - 0.015

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 2300 pounds.

The static thrust load rating is 3600 pounds.

The bore diameter tolerance is +.0007 / -.0007".

The outside diameter tolerance is +.000" / -.001".

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