Cam Clutches

“The new high-torque, high-speed Tsubaki BS-F series, with a narrow width I-beam torque arm, is a drop-in replacement to conventional anti rollback devices. This allows for quick and easy on-site installation and enables the replacement of an old backstop with the new BS-F design, without the need
for modification to the existing layout,” says Gavin Kirstein, National Tsubaki Product Specialist, BMG.

“Although this series has a narrower width than other models, the downsized unit exceeds the requirements of high-speed inclined belt conveyors, with the benefits of space-saving and reduced installation time.

“A common cause of conventional backstop failure is oil leakage. Tsubaki has eliminated this risk in the new BSF series by designing the backstop to operate with grease and a specially- designed labyrinth seal. The absence of an oil level gauge creates a more reliable safety device, ” adds Gavin.

“Important features of this series include a non rollover cam and roller design, which offers higher backstop torque capacities and lower running
temperatures than conventional anti rollback devices. Added to this, a flexible labyrinth seal mechanism prevents the ingress of dust and water in abrasive conditions and a double-lip oil seal and multi-temperature grease enable safe operation at a wide ambient temperature range, from – 40°C to + 65°C.”

The cam and roller cage orbit at low speed,
continually conveying grease internally from thebottom to the top of the mechanism. The constant circulation of grease minimises internal friction and reduces operating temperature for dependable operation. Maintenance intervals are between 7 500 hours and 8 000 hours and the effective service life of the units is also significantly extended compared with conventional oil-filled units.
Carlo Beukes
Tel: (011) 620-7558
Gavin Kirstein
Tel: (011) 620-7547