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KKB 325

Kopper Kool Brakes
  • Copper disc design for high heat dissipation
  • Accurate control

The Wichita Kopper Kool airtube disc Clutches and Brakes are liquid cooled and consist of a series of alternating discs connecting an inner drive member to an outer drive member.

Engagement is achieved by pneumatic expansion of the airtube. This air-operated clutch contains copper discs for excellent heat dissipation and provides an accurately controlled continuous slip action for constant web tensioning. Tension levels are in direct

Design Features

  • 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

7-326-300-101-0

Dynamic Torque Rating (80 psi/5.5 bar)

368760 lb.in|41640 Nm

Dynamic Torque Rating (100 psi/7 bar)

460950 lb.in|52079 Nm

Heat Capacity for Series Water Hosing

hp
kw

Heat Capacity for Parallel Water Hosing

1050 hp
783 kw

Maximum Bore Size

8.13 in
207 mm

Recommended Clearence

5/32-7/32 in
4-6 mm

Maximum Speed

935 rpm

Parallel Water Flow 0 % Ethylene Glycol

105 lgm
396 lpm

Parallel Water Flow 30 % Ethylene Glycol

135 lgm
510 lpm

Parallel Water Flow 50 % Ethylene Glycol

162 lgm
611 lpm

Total Brake Weight

1956 lb
887 kg

Disc Gear Weight

N/A

Disc Gear Inertia

lb·ft
kg·m

Pressure Drop Parallel Flow with 0 % Ethylene Glycol

psi
bar

Pressure Drop Parallel Flow with 30 % Ethylene Glycol

psi
bar

Pressure Drop Parallel Flow with 50 % Ethylene Glycol

psi
bar

Maximum Lining Wear

N/A

Maximum Lining Wear

in3
dm3

. in3
dm3

Pilot Diameter A

32.75 in
831.9 mm

Bolt Hole Circle Diameter B

28.750 in
730.25 mm

Pilot Diameter C

24.375/24.378 in
619.13/619.20 mm

Dimension D

32.75 in
831.9 mm

Dimension F

13.62 in
346 mm

Dimension G

2.36 in
59.9 mm

Dimension H

19.87 in
505 mm

Dimension J

0.25 in
6.4 mm

Number of Bolt Holes

12

Bolt Hole Size L

21/32 in
16.7 mm

Dimension M

15.50 in
393.7 mm

Dimension N

11.67 in
296.4 mm

Dimension Q

2.00 in
50.8 mm

Number of Inlet Ports – Thread Size

4- 1/2 NPT

Dimension T

12.00 in
304.8 mm

Minimum U

4.00 in
102 mm

Maximum U

in
207 mm

Number of Coolant Inlets – Thread Size

6 – 1.25 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.

Current design is with enhanced linings. A unit with regular linings is available upon request.

Not a pilot but a nominal dimension only.
(Consult factory for drawing before final layout.)

Number of inlets and outlets are equivalent.

1 Static torque will vary with temperature. Maximum air pressure is 100 PSI / 7 BAR. Minimum recommended air pressure is 3 PSI.
2 Static torque will vary with temperature. Maximum air pressure is 100 PSI / 7 BAR. Minimum recommended air pressure is 3 PSI.
3 Number of inlets and outlets are equivalent.
(Consult factory for drawing before final layout.)