M Series

M Series
M Series Specifications Table
Part NumberCable Size
(ref)
ØAØBØDEFGHJPulley Assembly Max Weight (lbs)Pulley Allowable Limit Load on Pulley
(lbs)
Bearing Part Number
Outside Diameter
±0.010
Groove Diameter
±0.010
Bore Diameter
(ref)
I.R. Width
(ref)
Groove RadiusWidth at Flange PointsFlange Thickness±0.005SAE BearingBearing Part Number
M-1B1/16"
5/64"
3/32"
1.2500.9720.19000.2970.052
+0.003
0.250
+0.000
-0.010
0.060
±0.005
0.0400.026300MS21443-3AKP3AK
M-2B2.5002.2220.075500MS21443-3BKP3K
M-3B1/8"
5/32"
3/16"
2.0001.5100.2500.4840.109
+0.003
0.422
+0.000
-0.012
0.086
±0.006
0.0860.090600MS21443-4CKP4K
M-4B3.5003.0100.2001,200
M-5B3/16"
7/32"
1/4"
5.0004.3740.3750.6200.140
+0.005
0.500
±0.007
0.092
±0.007
0.0920.5003,000MS27640-6KP6
M-6B6.000*5.3740.6604,000

Notes

*Indicated Dimension is Nominal

Materials

Metallic sheaves are 2024-T351 aluminum alloy conforming to SAE AMS-QQ-A-225/6.

Finish

Aluminum sheaves are anodized according to per 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.

Note: Ralmark Company MS24566 series of engineered phenolic laminate pulleys share similar dimensional characteristics.