Having a problem with your round magnetic chuck because the magnetic grip does not extend to the edge of the chuck?
Solve this problem with a RED-I-GRIP radial pole magnetic chuck. These chucks have a strong magnetic grip that extends to the edge of the chuck leaving no ‘dead’ areas as well as generating up to 16kg/ cm2 direct pull.
Other features to look for when selecting a magnetic chuck are
• A reliable ON/OFF switch system to ensure long life of the chuck as well as being able to be partially switched on whenever full grip is not needed.
• Chucks should always be sealed against coolant and di-electric fluid to ensure safety if working on EDM equipment.
• A chuck should have a strong grip to allow the grip diameter to be increased by using horizontal pole extensions and the use of vertical pole extensions should allow the chuck to be used on jobs without a flat grip surface.
• The radial pole chuck should also be able to be mounted on lathes, grinders and wherever extra powerful grip is needed
Also note that if a chuck has a centre hole it will allow non-magnetic plugs to be used to accurately centre jobs whereas a chuck without a centre hole can be machined after mounting to centre the hole to be concentric with the machine spindle axis.
source: www.robinsoninternational.com.au