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KKB 211

  • 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

7-311-210-107-0

Dynamic Torque Rating (80 psi/5.5 bar)

19200 lb.in|2131 Nm

Dynamic Torque Rating (100 psi/7 bar)

24000 lb.in|2712 Nm

Heat Capacity for Series Water Hosing

70 hp
52 kw

Heat Capacity for Parallel Water Hosing

105 hp
78 kw

Maximum Bore Size

3.00 in
76 mm

Recommended Clearence

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

Maximum Speed

2100 rpm

Parallel Water Flow 0 % Ethylene Glycol

10.5 lgm
40 lpm

Parallel Water Flow 30 % Ethylene Glycol

13.7 lgm
52 lpm

Parallel Water Flow 50 % Ethylene Glycol

15.8 lgm
60 lpm

Total Brake Weight

230 lb
104.3 kg

Disc Gear Weight

54 lb
24.5 kg

Disc Gear Inertia

4 lb·ft
0.17 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

15.997/16.000 in
406.32/406.40 mm

Bolt Hole Circle Diameter B

14.75 in
374.65 mm

Pilot Diameter C

11.375/11.378 in
288.93/289.00 mm

Dimension D

14.75 in
374.7 mm

Dimension F

6.13 in
155.7 mm

Dimension G

0.75 in
19.1 mm

Dimension H

9.56 in
242.8 mm

Dimension J

0.25 in
6.4 mm

Number of Bolt Holes

4

Bolt Hole Size L

21/32 in
16.7 mm

Dimension M

5.38 in
136.7 mm

Dimension N

4.63 in
117.6 mm

Dimension Q

1.13 in
28.7 mm

Number of Inlet Ports – Thread Size

2- 1/2 NPT

Dimension T

5.25 in
133.4 mm

Minimum U

1.00 in
25.4 mm

Maximum U

3.00 in
76.2 mm

Number of Coolant Inlets – Thread Size

3 – 1/2 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.

  • 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.