The Rowland Company
4900 North 20th Street
Philadelphia, PA 19144
Toll Free: 800-925-8824   Phone: 215-455-4900    Fax: 215-455-8888
E-Mail: rowland@rowland2.com    Web site: www.rowlandcompany.com
All Categories > Clutches and Brakes > Tension Brakes > Kopper Kool Clutches and Brakes > Kopper Kool Tension Brakes - Very High Heat Capacity > Item # KKB 325  


Item # KKB 325, Kopper Kool Tension Brakes - Very High Heat Capacity

  • 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.





Design Features  · Specifications  · Note

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)1
368760 lb.in
41640 Nm

Dynamic Torque Rating (100 psi/7 bar)2
460950 lb.in
52079 Nm

Heat Capacity for Parallel Water Hosing
1050 hp
783 kW

Maximum Bore Size
8.13 in
207 mm

Parallel Water Flow 0 % Ethylene Glycol
105 gpm
396 lpm

Parallel Water Flow 30 % Ethylene Glycol
135 gpm
510 lpm

Parallel Water Flow 50 % Ethylene Glycol
162 gpm
611 lpm

Total Brake (Weight)
1956 lb
887 kg

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
207 mm

Number of Coolant Inlets - Thread Size3
6 - 1.25 NPT

Manufacturer
Wichita Clutch

Actuation
Air Applied
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.)


Note
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.