3
FORM NO. L-20070-C-0501
OPERATION
In constant slip of drag applications, the W-1000 Brake
is capable of dissipating a maximum of 8 thermal
horsepower or 264,000 Ft. Lbs. [357,936.5 N•m] of
energy per minute. In cyclic applications, the energy
input increases by the cycle rate. Damage to the brake
will result if the amount of energy input times the number
of engagements per minute exceeds the brake’s thermal
rating. Insufficient water flow will cause the brake to
overheat and result in high friction facing wear, torque
loss, and damage to the friction surface of the Water
Jacket Assembly (Item 2). The correct water flow can be
determined using the formula:
5.1 (HP)
GPM
min
=
T
0
-T
1
where: GPM
min
= Minimum gallons per minute required
HP
= Thermal Horsepower requirement
T
0
= Outlet water temperature
T
1
= Inlet water temperature
Water inlet temperature should be approximately 70
0
F
[21° C] and the water outlet temperature should not
exceed 150
0
F [66° C]. Water flow can be automatically
controlled using a system with a water tempering valve
(See Figure 1). If a manual control is desired, use a ON/
OFF valve and flow meter on the water inlet to maintain a
proper flow of cooling water.
FIGURE 1
Water Inlet
Inlet Filter
ON/OFF Ball Valve
Flexible Tubing
Water Tempering
Valve
Flexible Tubing
Water Exit
LUBRICATION
The Ball Bearing (Item 8) in the W-1000 Brake is
prelubricated, sealed, and does not require lubrication.
MAINTENANCE
Water flow through the brake’s water jacket could become
restricted by scale and rust. If there is a noticeable restriction,
flush the water jacket with and automotive radiator cleaner.
Periodically inspect all mounting bolts, air line fittings, and
water line connections to make sure they are tightened
securely. Inspect the Friction Facing (Item 4) and replace it if
it is worn to the metal backing plates.
