Torque motors
Stall Torque Motors (unwinding)
A stall torque motor's speed drops to zero as it is loaded. If driven backwards, it resists with an almost constant torque, which makes it ideal for unwinding on cable reeling drums. Supplied to Mark standard and as direct replacements for Demag, AKH and others. Squirrel cage design since 1984-85, slip ring design since 1995.
Applications: Cable reeling drums on stackers, reclaimers and trippers in steel plants, cement plants, power stations, ports and docks
Ratings
- Squirrel cage: 2 to 10 Nm (0.2 to 1 kg-m), 12 pole, fail-safe electromagnetic brake
- Slip ring: 5 to 28 Nm (0.5 to 2.8 kg-m), 4 pole, fail-safe electromagnetic brake
Squirrel cage specification
No-load speed 450 rpm (12 pole), 3 phase, 50 Hz, 415 V, foot mounted (B3), Class F insulation, 50°C ambient, continuous rated, EMCO AC fail-safe brake, TESC enclosure, IP54, stall torque tolerance +10% / -5%.
Slip ring specification
No-load speed 1500 rpm (4 pole), 3 phase, 50 Hz, 415 V, foot mounted (B3), Class F insulation, 50°C ambient, continuous S1, EMCO AC fail-safe brake, TESC enclosure, IP55.
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