The Rowland Company
4900 North 20th Street
Philadelphia, PA 19144
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E-Mail: rowland@rowland2.com    Web site: www.rowlandcompany.com
All Categories > Clutches and Brakes > Tension Brakes > Airflex® Water Cooled Brakes > WCS Disc Brake Elements > Item # 146371  


Item # 146371, WCS Disc Brake Elements


WCS elements are disc type, externally cooled, spring applied units. They are designed to absorb and dissipate the thermal loads associated with the most severe braking and tensioning applications. The WCS friction couple was developed specifically for continuous slip service and has a dynamic coefficient of friction which is larger than its static coefficient of friction. Special high coefficient linings are also available which provide 50% higher torque than standard friction linings and provide a 1:1 dynamic to static torque ratio.





Specifications  · General Description  · Features  · Where Used

Specifications

Size

324WCS

Dimension D24

1.06 in
27
mm

Dimension D25

1.75 in
44
mm

Dimension D29

0.250 in
6.4
mm

Dimension D46

1.38 in
35
mm

Dimension D43

4.13 in
105
mm

Dimension G1

29.998 in
761.9
mm

Dimension H10

12.75 in
324
mm

Dimension H13

24.375 in
619.1
mm

Dimension J1

11.50 in
292
mm

Dimension J2

30.89 in
785
mm

Inlet Port Thread Size O22

1/2-14

Inlet Bolt Circle Diameter

18.50 in
470
mm

Minimum Bore Range3

5.50 in
140
mm

Maximum Bore Range4

7.38 in
187
mm

Dimension D1

13.19 in
335
mm

Dimension D

20.12 in
511
mm

Dimension D2

19.00 in
483
mm

Number of Coolant Ports (O)5

8

Coolant Port Thread Size

3/4 SAE ORB

Gear Part Number

412433

Torque Rating

232000 lb·in
26193
Nm

Release Pressure

80 psi
5.5
bar

Thermal Rating6

810 hp
604
kW

Water Flow Rate7

81 gpm
306.6
dm³/min

Housing (Inertia)

1022 lb·ft²
43.07
kg·m²

Disc & Gear (Weight)

0.84
87

Disc & Gear (Inertia)

1010
234

42.56

9.2

Maximum Slip Speed8

715 rpm

Maximum Freewheeling Speed9

1200

Housing (Weight)

872 lb
395
kg

Water Volume

480
7.89

Manufacturer

Eaton-Airflex

Actuation

Spring Applied, Air Release
1 Tolerance Sizes 8WCS thru 24 WCS +0.000/0.003 (+0.00/-0.08) 36WCS +0.000/-0.005 (+0.00/-0.13)
2 American National Pipe Thread.
3 Maximum bore sizes are based on flat keys, allow able gear hub stresses and torque ratings with a full complement of springs.
4 Maximum bore sizes are based on flat keys, allow able gear hub stresses and torque ratings with a full complement of springs.
5 American National Pipe Thread.
6 Based upon a 70 ºF (21 ºC) fresh water inlet temperature and a 50 ºF (28 ºC) temperature rise between inlet and outlet. See cooling requirements.
7 To insure proper cooling, inlet port must be located at the six o'clock position. Maximum allowable inlet pressure is 45 psi (3.1 bar).
8 Based upon a continuous slip velocity of 4500 fpm (22.9 mps).
9 Maximum freewheeling velocity is 7500 fpm (38.1 mps)


General Description
Element construction and operation is illustrated in the figure. Pressurizing the unit compresses the brake springs and withdraws the water jackets from the brake discs. Heat generated at the friction interfaces is quickly transferred to the circulating coolant.

Element sizes are indicated by the number of friction discs and the disc diameter in inches. For instance, size 224WCS has two friction discs 24 inches in diameter.



Features
Unique friction couple.
A specially formulated friction material, interfacing with a copper alloy surface, eliminates the stick-slip characteristic associated with ordinary frictional devices.

Rapid heat dissipation.
The copper interface conducts heat rapidly to the circulating coolant.

Open or closed loop coolant systems.
The element works equally well with open or closed loop circulating systems. On mobile equipment, the engine's cooling system can be tapped to provide coolant to the element.

Optional corrosion protection
For marine environment applications, protective coatings are available to minimize corrosion.



Where Used
  • Logging Equipment
  • Marine Mooring Systems
  • Drilling rigs