Constant Torque (adjustable). Units are provided bearingmounted and pre-assembled. There is virtually no wear because permanent magnets and hysteresis discs transmit the torque by magnetic flux without physical contact. Permanent magnet hysteresis units can be configured as a clutch or a brake depending upon mounting. Torque is accurate and dependable because it is produced magnetically, not via friction. Torque is consistent over a given speed range. Because there is no wear, units have an extremely long life. Also since units are sealed, there is no concern about contamination. Each unit has an adjustable torque range that can be set by the user and since the units operate via permanent magnets, no external controls or power is required. Since torque is transmitted via a hysteresis field, there is minimal difference between the static and the dynamic torque. These units are unaffected by friction and wear, therefore torque is substantially more accurate and repeatable than friction tensioners. AccurateAndDependable Torque. Units can deliver set torque regardless of speed range. Each unit's torque settings may bemanually adjusted over a wide range providing great flexibility. Stable Torque. Aconsistent torque is maintained regardless of allowable slip speed due to the hysteresis principle. Simple Installation. Long Life. Units are sealed to protect against contamination fromequipment. There are also no wear particles fromoperation to contaminate equipment. Units can bemounted in any axis and can be run either clockwise or counter-clockwise without affecting performance. No Contamination. No Electrical Power Needed. The PHT series clutches and brakes operate on a permanent magnet principle. External electrical connection is not required, therefore, units function independently frompower fluctuation. Vertical AndHorizontal Operation. Brakes/Clutches PHT Permanent-Magnet Hysteresis Clutch/Brake Model Part Static Torque Maximum Bore Volts / Watts Keyway Weight PHT-0.05D 25388100 0.0006 / 0.0052 3600 5 mm shaft 0 / 0 D shaft 0.05 / 0.12 PHT-10D 25297400 0.1220 / 1.08 1800 15 mm 0 / 0 5 x 17.3 mm 1.60 / 3.52 PHT-70D 23622300 0.5830 / 5.16 700 16 mm 0 / 0 5 x 18.3 mm 7.90 / 17.40 PHT-0.5S 25297100 0.0046 / 0.041 1800 6 mm shaft 0 / 0 D shaft 0.09 / 0.19 PHT-2.5D 25297200 0.0329 / 0.291 1800 6 mm 0 / 0 Set screw 0.57 / 1.25 PHT-0.05S 25297000 0.0006 / 0.0052 10000 3 mm shaft 0 / 0 D shaft 0.09 / 0.19 PHT-30D 23621200 0.2542 / 2.25 1000 16 mm 0 / 0 5 x 18.3 mm 3.60 / 7.93 PHT-5D 25297300 0.0621 / 0.550 1800 8 mm 0 / 0 3 x 9.4 mm 0.84 / 1.85 PHT-1.2D 25295100 0.0169 / 0.150 1800 6 mm 0 / 0 Set screw 0.30 / 0.66 Number Number Nm / in-lbs rpm kg / lbs PHT-0.02S 25293000 0.0003 / 0.0025 10000 3 mm shaft 0 / 0 D shaft 0.06 / 0.13 PHT-0.5D 25386400 0.0046 / 0.041 3600 8 mm shaft 0 / 0 D shaft 0.15 / 0.32 PHT-0.02D 25384800 0.0003 / 0.0025 3600 5 mm shaft 0 / 0 D shaft 0.05 / 0.11 www.jbj.co.uk/electromagnetic-clutches.html 41 #DriveLineHarmony Torque Range: 0 to 7 Nm. 0 to 62 in-lbs.
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