All Formsprag/Stieber clutches described in this catalog are essentially “overrunning” clutches, i.e., they will drive in one direction but overrun (freewheel) in the other direction.Through the wide variety of designs offered by Formsprag Clutch and Stieber Clutch in both Sprag and Ramp & Roller Designs virtually any application can be met where this function is required. (read more)

SDP/SI stocks over 194 Mechanical Clutches, Electromagnetic Clutches, Roller Clutches, magnetic clutches,... (read more)

Ortlinghaus multi-plate slipping clutches (torque limiting) are permanently engaged by means of spring pressure. They are factory set to transmit a predetermined level of torque. If this amount of torque is exceeded, as in the case of an overload, the friction clutches are designed to slip for a limited period of time. These slipping clutches are used to safeguard shafts in all types of machines. (read more)

Black Ace's Adjustable Torque Limiter Clutches are known for their high durability, long service life, and bulletproof design. These clutches are commonly used to protect roller chain drives that demand repeatable torques in multiple engagements. Torque values are easily adjusted without removal or disassembly. (read more)

Reliable, long life, and full control of clutch engagement. (read more)

Som Pac® drives are completely assembled clutch/brake drive systems operating in a bath of oil within a rugged, sealed housing which is impervious to outside contaminants. (read more)

Through the wide variety of designs offered by Formsprag Clutch and Stieber Clutch in both Sprag and Ramp & Roller Designs virtually any application can be met where reciprocating motion applied to the driving race is transformed into intermittent motion in only one direction at the driven race. (read more)

Centrigard, a new torque-timing clutch, joins Boston Gear's top-selling Centric® Clutch product line. The high-performance powerhouse has a stainless steel trip plate and a wide torque range, yet the unit is actually smaller than traditional products, making it ideal for packaging lines and other applications that require torque-limiting rotational timing. (read more)

These clutches are used whenever different sections of a machine need to be first disengaged from the drive train and then re-engaged while maintaining the same phase or angular relationship which existed prior to disengagement.They are often used in a line-shaft,between printing units on a offset-printing presses, and to disconnect certain units on a finishing line. (read more)

EAS-Sp, EAS-Sm/Zr - pneumatic or electromagnetic clutch - Controllable during operation; Torque continously adjustable; High switch-off accuracy. (read more)