Industrial Clutches
Controlling motion through engineered solutions. The Hilliard Corporation offers a broad line of industrial clutches—designed, manufactured and sold according to our customer's specifications. Hilliard’s line of industrial clutches provide dependable solutions to problems of torque control, overload protection, positive engagement and high torque on demand.
Hilliard’s line of overrunning clutches is economically priced and ideally suited for backstopping and gearbox applications. Custom designs and rapid prototyping are available. The overrunning clutch can be used for ratchet-type indexing operations such as packaging equipment and printing presses. When used in conjunction with a torque arm to hold the output shaft, Hilliard overrunning clutches provide instant backstopping protection with zero backlash from reversed rotation whenever power to the conveyor’s drive unit is interrupted.
An integral part of many Hilliard motion control products is our roller-ramp design. The use of hardened cams and precision-machined rollers maximizes service life. There is almost no wear during freewheeling operations because rollers are free to rotate between the outer member and the inner cam. When the rollers are engaged, the load falls at random positions on the rollers. The result is superior service life and reliability. The Magna Torque is similar to the MT design except the cam surface is reversed allowing it to be used in multi-speed/dual drive applications.
Typical applications for dual-source drives are blowers, pumps and fans. For multi-speed drives, our overrunning clutches are ideal in such operations as conveyors and forming rolls.
Hilliard Sprag Clutches are designed for overrunning, backstopping and indexing applications. This clutch is a freewheeling device with an inner race and an outer race, either of which can be the input or output member. The input can drive the output in a chosen direction and permit the output to overrun in the same direction. The clutch consists of a cage full of steel sprags or wedges, located in the space between concentric inner and outer races. Power is transmitted from one race to the other by the wedging action of the sprags between them. Rotation in one direction causes the sprags to tilt and wedge, preventing rotation. This allows free rotation in the opposite direction.
Hilliard’s Enclosed Overrunning Clutch incorporates superior MTR design in a totally enclosed package. Designed for power transmission operations, this clutch is totally contained in a stationary housing for constant protection from hostile environments or wash-downs. Lubrication system provides continuous oil circulation. Breather filter attached to equalize pressure without introducing contaminants.
The Hilliard High-Speed Overrunning Clutch provides positive engagement and high torque on demand. Featuring a unique roller-ramp design, the clutch when engaged transmits power via the precision-machined cam and roller assembly connected to the input shaft. A ball bearing at each end of the roll cage supports and aligns the cam in relation to the drive (output) shaft.
Hilliard single revolution clutches provide output cycles, on demand, from a continuously running input. The output cycles can be a fraction of a revolution, one revolution or multiple revolutions. This clutch typically provides five times the duty life of wrap spring clutches for indexing, shearing, bending, fastening, loading or similar applications. Each clutch is designed for a service life of up to 40 million cycles.
IDA’s are easy-to-install, self-contained packages that include a solenoid-operated, single revolution clutch with available anti-rollback and anti-overrun features. Other features include: rugged roller-ramp clutch design, dimensionally interchangeable with wrap-spring units, heavy-duty rotary solenoids operate on 115 VAC or 12, 24, or 90 VDC, pneumatic operation available. These units are available in clockwise or counterclockwise rotation with a convenient four-bolt mounting flange. Other options include rubber shock mounts, non-standard key location and multiple stops.
The IDU consists of a single revolution clutch and all necessary controls engineered into a compact, totally enclosed, foot mounted housing. This unit is also available with a unique acceleration-deceleration unit (IDU/ADU) which provides smooth acceleration and deceleration of the output shaft.