| Type of Application Complete sector of machine manufacture. EZ-Series especially suitable for gearbox manufacture, machine-tool industry, specialized machine industry. Z-Series especially suitable for heavy machine industry, rolling mills. Typical Characteristics Torque transmission via profiled teeth. Small dimensions - high torque ratings. Short operation times - precise operation. No idle-run torque. High speed ratings permissible. Nearly maintenance free. Engagement at standstill or synchronous running. Disengagement under full load and at full speed. Special tooth arrangements allow engagement in a certain angular position. Wet and dry operation possible. Methods of Operation: Actuated by electrical current: engaged by D. C. - released by springs Actuated by loss of electrical current: engaged by springs - released by D. C. Hints on Construction and Operation Selection of type according to application requirements and constructional possibilities, i. e. wet or dry operation, shaft clutch, hub clutch, speed rating, duty factor. Selection of size to max. torque. Short time occuring peak values on driving and driven sides must be considered. Switching in D. C. circuit. Overvoltage protection is always recommended. If coil output is > 100 watts, overvoltage protection is necessary. With lower coil output overvoltage protection is also necessary to achieve a consistant disengaging time. Normal coil voltage 24 or 110 volts, other voltages are available. Coils to insulation class B (class F also possible). Max. temperature limit 130°C (155°C) -VDE0580-. Reduction of engagement times by quick-excitation and quick-operation. Reduction of disengagement times by special operation (counter-excitation). For starting or switching under load conditions (difficult starting) or for short acceleration processes, quick-switching is required (see "Accessories"). |