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Specifications

Size

8CB250

Torque Rating (75 psi/5.5 bar)1

4290 lb·in
485 Nm

Maximum Speed2

1800 rpm

Centrifugal Loss Constant Cs

7.0 E-06 psi/rpm2
0.48 E-06 bar/rpm2

Inertia

2.0 lb·ft²
0.08 kg·m²

Weight

9 lb
4.1 kg

Friction Area

61 in²
393.5 cm²

New Friction Lining Thickness

0.12 in
3 mm

Worn Friction Lining Thickness

0.06 in
2 mm

Air Tube Cavity3

30 in³
0.49 dm³

Minimum Drum Diameter

0.49 in
0.49 mm

Dimension D2

3.44 in
87 mm

Dimension D24

1.91 in
48 mm

Dimension D25

0.09 in
2 mm

Dimension G4

12.875 in
327 mm

Dimension G1

11.19 in
284 mm

Dimension H2

12.125 in
308 mm

Dimension H6

8.16 in
207 mm

Dimension H7

12.13 in
308 mm

Number of Mounting Holes

8

Bolt Hole Size L

0.38 in
10 mm

Dimension O3

0.31 in
8 mm

Air Inlet Thread

3/8-18

Angle Q

22.500 º

Dimension V

0.56 in
14 mm

Number of Friction Shoes

14

Friction Shoe Width (W)

2.50 in
64 mm

Manufacturer

Airflex

Notes

Refers to basic part number only. When ordering, the number of air inlets and type of connection must be specified. For example 142096JA, 142096JB, 142096JC, 142096JG

1 Dynamic torque shown, static torque approximately 25% greater. Torque in each application is dependent upon air pressure and speed.
2 Maximum rpm is dependent upon operating conditions and varies for each application. Consult factory for applications exceeding these speeds.
3 Drum contact with worn shoes.
4 Tolerance for sizes:
3 thru 5
+0.000/-0.003 in (+0.00/-0.08 mm)
6 and larger
+0.000/-0.005 in (+0.00/-0.13 mm)