Bearing Data

Bearing Data
Bearing Data Specifications Table
Military Standard
Part #
Bearing Part NumberØAØBDEØFghRadial Limit Load RatingThrust Limit Load Rating
Bore
Diameter
+0.0000
-0.0005
Outside Diameter
+0.0000
-0.0005
Inner Ring Width
+0.000
-0.005
Outer Ring Width
+0.000
-0.005
Inner Ring Shoulder Diameter
approx.
Inner Ring Chamfer
+0.015
-0.000
Outer Ring Chamfer
+0.015
-0.000
MS21443-3BKP3K0.19000.77740.2970.2700.3320.0050.0241090600
MS21443-3AKP3AK0.19000.62500.2970.2340.2970.0050.016705385
MS21443-4AW4AK0.25000.75000.4380.3120.3720.0050.0161090600
MS21443-4CKP4K0.25000.90140.4840.3350.3900.0050.0341710800
MS21443-4BP4K0.25000.87500.4380.3750.4230.0050.0221710800
MS21443-5AP5K0.31250.87500.6250.3750.4550.0050.0221710800
MS21443-5BPD5K0.31250.93750.6250.5630.4900.0050.02234201030
MS21443-8P80.50001.68750.7500.5630.7680.0050.032118005200
MS21443-10P100.62501.18750.4380.3750.7690.0050.02224401100
MS27640-6KP60.3751.43750.6200.4690.5910.0150.03279103500

Notes

Dimensions in inches unless otherwise specified. Stainless steel CRES bearings are also available for certain pulley applications. Please contact Ralmark for more information.

Lubrication

MIL-PRF-81322 or MIL-PRF-23827. All bearings shall be packed with grease conforming to MIL-PRF-81322 unless otherwise specified. If MIL-PRF-23827 is required, add the letter "G" after the MS21443 dash number. MIL-PRF-23827 shall not be used for operation exceeding 250°F. Additional lubrication can be made available.

Plating

Except for bore, all exposed surfaces are cadmium plated in accordance with latest specification requirements.

SAE Aerospace Standards (AS21443 and AS27640) adopted the original military standards and specification. Military Standard callout numbers have been retained for part identification.