B544DD airframe control ball bearings drawing
  1. The dynamic load rating given is for outer race rotation. The dynamic load rating for inner race rotation is 2300 pounds.
  2. The static thrust load rating is 3600 pounds.
  3. The bore diameter tolerance is +.0007 / -.0007".
  4. The outside diameter tolerance is +.000" / -.001".
  5. The tolerance for the inner race width and the outer race width is +.000" / -.005"
  6. 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.
  7. 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.
  8. The bearing has two removable seals made of woven fabric Teflon.

B544DD Airframe Control Ball Bearing

Model: B544DD

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Product Details

Bearing Type BxxxDD
Bore Dia (d) 1.8125 in
Outer Dia (D) 2.2500 in
Outer Width (Bo) 0.2500 in
Inner Width (Bi) 0.2810 in
Dynamic Load Rating (Cr) 2,220 lbs
Static Load Rating (Cor) 7,980 lbs
Max. Shaft Shoulder Dia. Inner (Li) 2.0 in
Ball Qty 51
Ball Dia (Dw) 0.1250 in
Max. shaft corner radius, or 45 deg. chamfer (ch1) 0.015 in
Max. housing corner radius, or 45 deg. chamfer (ch) 0.015 in
Material 52100 Chrome steel or equivalent