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With “brake effective both directions”, the static brake will
keep both the cable drum and extension shaft from rotat-
ing in either direction. Cable can be wrapped on the drum
in either direction with no other modifi cation required.
In operation, the friction brake must be hydraulically re-
leased when the winch is operated in either the reel-in or
reel-out direction.
When the winch is powered in either direction, the motor
cannot rotate until suffi cient pilot pressure is present to
open the correct brake valve cartridge. The friction brake
will completely release at a pressure lower than that re-
quired to open the brake valve cartridge. The extent to
which the cartridge opens will determine the amount of oil
that can fl ow through it and the speed at which the cable
drum will turn. Increasing the fl ow of oil to the winch mo-
tor will cause the pressure to rise and the opening in the
brake cartridge to enlarge, speeding up the cable drum.
Decreasing this fl ow causes the pressure to lower and
the opening in the brake valve cartridge to decrease thus
slowing down the cable drum.
Low Speed High Torque Motor
Changing Direction of Rotation
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