Aerospace: Airframe Control Bearings
Aerospace Bearings » Airframe Control

MS21428-40 Bearing Airframe Control | Extra Light Duty Torque Tube

Part No.
MS21428-40
Standard Part No.
MB540
Governing Specs
SAE AS7949

Specifications

Approx. Weight Dimensional Diagram
Duty
Extra Light Duty
Bore Inner Diameter
.8750 +.0000/-.0005
Outer Diameter
1.3125 +.0000/-.0005
Inner Ring Width
.2810 +.000/-.005
Outer Ring Width
.2500 +.000/-.005
Inner Ring Shoulder Diameter
1.0190 Approx.
Outer Ring Chamfer x 45°
.0150 +.015/-.000
Inner Ring Chamfer x 45°
.0150 +.015/-.000
No. Balls
27
Ball Size
1/8 "
Static Radial Limit Load Rating
4220 lbs.
Static Thrust Limit Load Rating
1900 lbs.
Approx. Weight
0.050 lbs.

Interchange

National Precision Bearing Part No MS21428-40 is an interchangable replacement for these common bearing part numbers:

NHBB
MB540DD
RBC Aircraft
MB540DD FS464
Schatz
MB540DD-H

Dimensions and Values provided are for reference only. A full specification can be obtained at the Society of Automotive Engineering website.