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  • 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 proportion to air pressure applied.
Unit of Measure

Design Features

N/A

  • 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

 N/A 7-321-210-102-0
Dynamic Torque Rating (80 psi/5.5 bar)1 N/A 11008 Nm 99200 lb.in
Dynamic Torque Rating (100 psi/7 bar)2 N/A 124000 lb.in 14010 Nm

Heat Capacity for Series Water Hosing

 N/A 200 hp149 kW

Heat Capacity for Parallel Water Hosing

 N/A 300 hp224 kW

Maximum Bore Size

 N/A 6.50 in165 mm

Parallel Water Flow 0 % Ethylene Glycol

 N/A 30 gpm114 lpm

Parallel Water Flow 30 % Ethylene Glycol

 N/A 39 gpm148 lpm

Parallel Water Flow 50 % Ethylene Glycol

 N/A 45 gpm170 lpm

Total Brake (Weight)

 N/A 870 lb395 kg

Disc & Gear (Weight)

 N/A 226 lb103 kg

Disc & Gear (Inertia)

 N/A 64 lb·ft²2.7 kg·m²

Pilot Diameter A

 N/A 26.977/27.000 in685.22/685.80 mm

Bolt Hole Circle Diameter B

 N/A 25.500 in647.70 mm

Pilot Diameter C

 N/A 21.375/21.378 in543.00/542.93 mm

Dimension D

 N/A 24.88 in632 mm

Dimension F

 N/A 7.94 in201.7 mm

Dimension G

 N/A 1.50 in38.1 mm

Dimension H

 N/A 15.81 in401.6 mm

Dimension J

 N/A 0.25 in6.4 mm

Number of Bolt Holes

 N/A 10

Bolt Hole Size L

 N/A 21/32 in16.7 mm

Dimension M

 N/A 11.38 in289.1 mm

Dimension N

 N/A 10.50 in266.7 mm

Dimension Q

 N/A 1.75 in44.5 mm

Number of Inlet Ports - Thread Size

 N/A 3- 1/2 NPT

Dimension T

 N/A 11.38 in289.1 mm

Minimum U

 N/A 2.00 in50.8 mm

Maximum U

 N/A 6.50 in165.1 mm
Number of Coolant Inlets - Thread Size3 N/A 3 - 3/4 NPT

Manufacturer

 N/A Wichita Clutch

Actuation

 N/A Air Applied

Note

N/A 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.

  • 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.)