Products Clutches, brakes & couplings DC injection brakes
DC injection brakes for bringing motors quickly and safely to a stop are available from Ralspeed. Manufactured by Peter Electronic, these are available with ratings from 6A to 600A and can be supplied in versions for three-phase applications. For applications where braking is required to continue until the motor comes to a complete stop, Ralspeed offers the Versibrake LP units with ratings up to 30A. These provide infinitely variable control over braking current and have an integrated braking contac- tor, all within a 45mm wide DIN housing. Braking is controlled both by the motor contactor and by motor voltage detection. Other models with similar features are available for larger motors. If time-dependent braking is preferred, VB braking devices are offered which feature a volt-free contact that can be used to ener- gise the star contactor in star delta starters during braking; as well as type BR devices for braking multiple motors. Ralspeed
T: 01254 582345
www.ralspeed.com Enter 224
Carriage brake mechanism for linear motion systems by turning the handle.
Now available from HepcoMotion is the Bishop-Wisecarver UtiliTrak Carriage Brake System, a simple mechanism that allows the UtiliTrak linear motion system to be manually locked at any user- selected position along the rail. This comprises a handle and a brake block which fits over the existing lubricator end caps. The twin brake arms that straddle the rail are engaged and disengaged
The brake system components are positioned below the carriage’s payload mounting surface to minimise interference, and the angular position of the handle arm can be adjusted to any position without affecting the brake engage- ment status or
level of braking force. An addi- tional brake assembly can be located at the opposite end of the wheel plate for added braking strength.
The system is suitable for four UtiliTrak sizes – 0, 1,
2, 3 – in the steel, aluminium and Open Channel series. HepcoMotion
T: 01884 257000 Enter 225 Coupling range suits demanding servomotor systems
Compact Composite Disc (CD) shaft couplings capable of withstanding the most demanding servomotor systems have been launched by Zero-Max. Precision machined in ASTM A 108 steel and 6061-T6 aluminium, the body components of the couplings are inherently balanced, while the functioning components are made from a precisely oriented and layered composite material similar to those composites used in aerospace applications. To ensure precise alignment of the assembled components, ISO Class 12.9 hardened shoulder bolts are used. Features include high dynamic load capacity and high torsional stiff- ness to ensure reliable system operation, zero backlash, and they provide smooth operation at high speeds. Standard models and sizes include single and double flex models with clamp style hubs with or without keyways. The torque capacities range from 40Nm to 1436Nm and beyond, with speed ratings from 4400rpm to 17,000rpm. Zero-Max
www.zero-max.dk
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