MS20221

Pulley, Groove, Heavy Duty, Control, Aircraft
MS20221
MS20221 Specifications Table
Part Number
Non-Metallic Sheave
Part Number Metallic SheaveCable Size
(ref)
ØAØBØCØDEPulley Assembly Max Weight (lbs)BearingAllowable Load On Pulley
(lbs)
Max Limit Load on Cable independent of Wrap Angle (lbs)
Outside Diameter ± 0.005Groove Diameter ± 0.005I.R. Outer Diameter
(ref)
Bore Diameter
(ref)
I.R. Width
(ref)
MS21443 Dash No.Bearing Part Number3/16" Cable7/32" Cable1/4" Cable
MS20221A13/16"
7/32"
1/4"
2.6252.0000.4550.31250.6250.165-5BPD5K2,8002,6203,0603,500
MS20221-2MS20221A24.1253.5000.7680.50000.7500.45-8P84,900
MS20221-3MS20221A35.6255.0000.687,000

SUPERSEDES: AN221 > MS20221 > MIL-DTL-7034/3A

Materials

Non-metallic sheaves are machined from an engineered phenolic laminate exceeding the requirements of MIL-I-24768/16. Metallic sheaves are 2024-T351 aluminum alloy conforming to SAE AMS-QQ-A-225/6.

Finish

Aluminum sheaves are anodized according to MIL-A-8625, Type II, Class I.

Bearing

Conforming to the requirements of AS7949 and AS21443.

Lubrication

Grease conforming to MIL-PRF-81322 or MIL-PRF-23827.