Competitive Small Chucks in Stock

Product Description

Magnetic chucks include several types such as electromagnetic chucks, permanent magnetic chucks and permanent electromagnetic chucks, each having particular functional features.
In the machining industry, it has been known since the beginning of the 20th century to apply magnets to holding workpieces. In particular, recent technological development has expanded applications of magnetic chucks from grinding machines only to heavy duty cutting processes by machining centers, lathes, milling machines, etc. Today the applications have further been expanded to include metallic mold
machining and electric discharge machining. Thus, the magnetic chucks that meet these high precision machining requirements play a very important role in many machining fields.
In addition to magnetic chucks, GME offers chucks designed for nonmagnetic materials to respond to requirements in grinding of various materials. We believe you will find products in this brochure that meet your diversified needs.

Overview and features of chucks:

Electromagnetic Chuck	1. Very efficient since workpieces can be loaded/unloaded just by switching operation. 2. Automatization in machining process is realizable by interlocking the chuck with the machine tool. 3. Attraction is electrically controllable. 4. Easy to make larger type of chuck.
Water-Cooling Type Electromagnetic Chuck	1. Constructed to reduce heat generated during power on by water cooling. 2.Used for high precision operations and exhibits features of electromagnetic chucks effectively. 3.Most suitable for dry grinding.(Heat from workpieces is absorbed also)
Permanent Electromagnetic Chuck	1. Very effcient since workpieces can be loaded/unloaded just by switching operation. 2. Energy-saving, since electric power is used only mome-tarily for loading/unloading workpieces. 3. High accuracy due to no change with time passage. 4. Never any trouble due to suspension of powder supply.
Permanent Magnetic Chuck	1. Energy-saving type, requiring no power source. No fear of power failure and can hold workpieces for a long time. 2.No heat generated and thus no thermal distotion due to temperature rise. 3. Uniform magnetic force irrespective of chuck sizes.
Sine Bar Chuck	1. Magnetic chuck equipped with sine bar for high precision grinding and inspection. 2. Precisely finished to overall accuracy of 0.05mm or better. 3. Various types are available from electromagnetic, water-cooling electromagnetic, permanet magnetic and permanent electromagnetic chucks.
Vacuum Chuck	1. Holds workpieces by action of atmospheric pressure 2.Vacuum chucks nonmagnetic materials.
Promote System	1. Secures workpieces to a special chuck using workpiece fixinig material. 2. Secures nonmagnetic materials.

Standards of electromagnetic chuck:

Length or diameter of face plate	up to 300	Above 300,up to 600	Above 600,up to 900	Above 900	Surface roughness:6.3S Mounting face: Not convex
Flatness	0.01	0.015	0.02	0.025
Parallelism	0.02	0.03	0.04	0.05
Holding power	The holding power on the chuck face plate must be 98.1N(10 kgf)or over in average and 49N(5kgf)or over in the weakest area.
Withstand voltage	Dielectric breakdown between the charged part and the body is not allowed.(1500VAC,1min)
Insulation resistance	The insulation resistance must be 5ΩM or over.(Measured with 500 V insulation resistance meter)
Temperature rise	The temperature rise on the chuck work face must be below 15ºC.(Powered on for 3 hours)
Water resistance	When a chuck is immersed in water, it must not allow water to enter the inside or its insulation performance must not drop.

Note: The standards of the holding power and temperature rise vary according to models.


Types of chucks by applications:

Machining	Application	Machine
Heavy duty cutting	Material rough cutting	Machining center Milling machine Lathe Turning machine
General cutting	Material cutting General finishing
Light duty cutting	Finishing (Straightening)
Heavy duty grinding	Material grinding	Rotary grinder Surface grinder Belt grinder Cylindrical grinder Mold grinder
General grinding	General finishing Finishing (Straightening)
Precision grinding	Precision finishing
Electric discharge machining	Mold machining	Electric discharge machine
Nonmetallic machining (Weak magnetism)	Grinding cutting	Machines in general

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