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KKB 208

Kopper Kool Brakes
  • New friction material lasts longer with less wear on mating copper.
  • Copper alloy wear plates increase heat transfer.
  • Hub spline provides perfect alignment of rotating discs.
  • External air & water connections.
  • Release springs ensure complete disengagement.
  • High strength reinforced neoprene air-tube offers long service life.
  • Optional long stroke air tube available on 18″ or 24″ size units to increase life and standard maintenance intervals.
  • High thermal capacity.

Specifications

Assembly Number

7-308-210-100-0

Dynamic Torque Rating (80 psi/5.5 bar)

8640 lb.in|959 Nm

Dynamic Torque Rating (100 psi/7 bar)

10800 lb.in|1220 Nm

Heat Capacity for Series Water Hosing

42 hp
31 kw

Heat Capacity for Parallel Water Hosing

64 hp
48 kw

Maximum Bore Size

2.25 in
57 mm

Recommended Clearence

3/32-5/32 in
2-4 mm

Maximum Speed

2860 rpm

Parallel Water Flow 0 % Ethylene Glycol

6.4 lgm
24 lpm

Parallel Water Flow 30 % Ethylene Glycol

8.2 lgm
32 lpm

Parallel Water Flow 50 % Ethylene Glycol

10 lgm
38 lpm

Total Brake Weight

116 lb
52.6 kg

Disc Gear Weight

25 lb
11.1 kg

Disc Gear Inertia

1.3 lb·ft
0.05 kg·m

Pressure Drop Parallel Flow with 0 % Ethylene Glycol

0.9 psi
0.06 bar

Pressure Drop Parallel Flow with 30 % Ethylene Glycol

25 psi
1.72 bar

Pressure Drop Parallel Flow with 50 % Ethylene Glycol

32 psi
2.21 bar

Maximum Lining Wear

0.4 in
1.0 cm

Maximum Lining Wear

10in3
0.2 dm3

16. in3
0.26 dm3

Pilot Diameter A

12.125/12.128 in
307.98/308.05 mm

Bolt Hole Circle Diameter B

11.125 in
282.58 mm

Pilot Diameter C

8.375/8.378 in
212.73/212.80 mm

Dimension D

11.75 in
288.5 mm

Dimension F

4.25 in
108 mm

Dimension G

1.13 in
28.7 mm

Dimension H

8.43 in
214.1 mm

Dimension J

0.25 in
6.4 mm

Number of Bolt Holes

4

Bolt Hole Size L

17/32 in
13.5 mm

Dimension M

4.38 in
111.3 mm

Dimension N

3.50 in
88.9 mm

Dimension Q

1.38 in
35.1 mm

Number of Inlet Ports – Thread Size

2- 1/2 NPT

Dimension T

3.75 in
95.3 mm

Minimum U

1.00 in
25.4 mm

Maximum U

2.25 in
57.2 mm

Number of Coolant Inlets – Thread Size

3 – 3/8 NPT

Manufacturer

Wichita Clutch

Actuation

Air Applied

Notes

Maximum water jacket inlet pressure is 60 PSI. Brakes with as great as 50 % higher torque capacity is available upon request.

For mounting, use socket head capscrews conforming to the ASTM-574-97a.