Basic Design and Operation
Structure
Examples of installation & Application
Dry clutch and driver can be used to drive and disengage machines, to transfer speeds and directions and for other application including.
Packing and wrapping systems: packing machines, strapping machines, wrapping machinery.
Textile machinery: fiber twister, treatment machines, weaving machines.
Metal finishing systems: extruders, wire stretchers, presses, welders, steel wire retractors, cutters, pipe makers, wire winding machines.
Machine tool systems: lathes, millers, steel extruders, CNC lathes, specialized machinery.
Transportation equipment: hoists, feeders, conveyors rollers, winders.
Paper-making systems: bag-making machines, box-making machines, slitters, book-making machinery, cutters, copy paper machines.
Printing systems: conveyors and in-feeders.
Wood-working systems: saws, wood-working machines, laminators.
Office equipment: electronic copy mahines, calculators, fax machines, coin counters, printers.
Testing system: lab machines, durability testers, measuring systems.
Food processing systems: meat cutting machines, cookie making machines, canning machines, noodle making machines.
Others: speed reducers, electroplating machinery, physics and chemistry machines, paper-machines, pulp processing machines.
Applications
Operating Guidelines
The magnetic clutch is a critical component in any machine, and it must be carefully adjusted to fit the rest the system. Thus the following points should be carefully monitored during operation:
Location
Dry clutch and brake assembles should be used in locations which are free of water, oil and other impurities. Water and oil can affect the friction of the clutch plate and decrease the effectiveness of the clutch. For added protection a cover should be installed.
In dusty areas the clutch and brake assemblies should be completely enclosed. Magnetic clutches rated at 60KGM or less can be used vertically and in some cases with large machines.
Installation machinery
Side installation
- Consult JIS 04701 h6 or js6 guidelines in accordance with clutch and brake shaft lengths.
- Use one of the guidelines in JIS B1301*1959 regarding installation of the key. Also, the length of the key should be in line with specification charts L and N.
- Check heating and other factors; the thrust duct of the installed shaft should be within 0.2mm.
- Consult JIS B0401 H7 H7 for specifications regarding installation of the clutch flange and brake yoke.
Installation of the through shaft
- Free-turning installation of armatures at several points on the shaft of the clutch.
- At this time, ensure that rotor and flange are tightly in place on the long shaft. In addition, the porion of the machinery used to install the flange must be precisely at a right angle.
- Use 7T or better quality bolts and nuts for the flange in accordance with JIS B 1180.
- Lay out conveyor belts so that the load is higher than the bearings.
Installation of opposing shafts
- Install driving side and driven side on the two ends of the shaft to form a single piece.
- The rotor and saline wheel hub are installed on the long shaft using a retaining band, installation screws and a metal plate with two holes;assembly must be tight. Check the centering and angles of the two shafts.
Installation of the brake
- Use lock nuts, the retaining band and safety screws to hold the spline wheel hub in place along the long shaft. Ensure that everything is tight. Check the centering and angles of the yoke installation face and the shaft.
- Leave an air relief passage of 6~ to 10~ to allow dust from friction to dissipate.
- Install a dust guard to keep friction-generated debris out of the bearing linings (felt strips and rubber rotators).
Routine checkpoints
- During installation adjust the drew space above the machinery to + / - 20% of specifications.
- Use a hoist to lighten the load of the machinery and avoid pressure on the clutch bearing.
- Use spring clips and glue wherever needed with screws and blots to prevent loose connections.
- Utilize the frames on the sides of the machinery to hold lead ire, and use the terminal box to ensure good connections.
Other
The torque of the friction surface may change due to various conditions. A newly-installed clutch may not have the torque that is specified. During the break in period keep loads relatively light and ensure that power level are sufficient to allow proper operation.
Use single-piece shaft joints to ensure sold jointing where necessary. This helps to keep shaft center properly aligned.
Check radial loads on the shaft ends of models CD-E and CD-A during operation. Problems are particularly likely to occur when drive belts are used with high turning speeds.
When CD-A is used with a primary driver and the load on CD-A is significant, the primary driver may exceed load limits (especially when its speed shows). Keep this in mind when using this type of machinery.