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Hilliard Bi-Directional overrunning clutches replace expensive shifting and drive train assemblies. These clutches provide positive engagement automatically in either direction.
Manufactured exclusively by The Hilliard Corporation, these unique clutches feature rugged, field-proven components and are easy to service in the field. Because they can overrun in either direction, Hilliard Bi-Directional overrunning clutches are ideal for such functions as bi-directional and dual-source drives.
A specially designed unit was recently used by Polaris Industries to produce the first 4-wheel drive, all-terrain vehicle capable of providing automatic front-wheel drive engagement in both forward or reverse models.
Features:
• Senses driving direction and automatically shifts to
driving or overrunning modes
• Proven roller-ramp design
• Precision-machined components
• Bearing support and alignment of cam to drive shaft as required
Benefits:
• Reliable, durable and long lasting
• Positive engagement
• Automatic disengagement
• Constant drive maintained while engaged
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Two-way clutch automatically changes the clutch direction according to the rotating direction of input.
Sprags with symmetrical left and right sections are held in the doubled inside and outside cages, then the clutch unit performs perfect clutching function according to the rotation direction of the torque input.
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Clutches
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SIAM-RINGSPANN irreversible lock enables free driving of any machine element in both directions of rotation but locks any reverse torque from the the driven element to the driver.
Application:
Locking devices for steerable wheels
Rudder and control-surface locks in ships and aircraft
Non-return locking in shut-off and control valves
Locking adjustable devices in position
Securing hatches and windows
Ensuring that railway signals and points remain at their settings
Ensuring that settings are held in hydrostatic pumps
Cam adjustments
Locking and manual adjustments of gate opening and closing mechanisms
Locking of trolleys in hoist equipment
Securing aerials against angular shifts
Locking horizontal ball-bearing mounted spindles
Locking manipulator equipment
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The transmission is involved in the 2 directions of rotation and is locked in position. The origin of the movement can be manual or electric.
The bidirectional transmission involves the transmission towards the right-hand side or the left. If the movement of entry ceases, the irreversible one locks the transmission in the position of stop and the movement of exit is neutralized in the 2 directions.
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