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magnet holder for diamond core drill bit

Product Description

                          magnet holder for diamond core drill bit  Product Description magnet holder for diamond core drill bit Magnet Holder: This tool is used for brazing the segments onto the barrels.
Because the segments are usually 4mm thick and a barrel might be 2mm thick, this tool gives you the offset required when brazing your segments onto the barrel. Application: For segment retipping magnet holder for diamond core drill bit Feature: The retipping magnet are made of strong N35EH neodymium magnet with strong magnitizm but also high resistance for heat.In the meantime,the retipping magnet are perfect for position the drilling segment in percise side clearance.Also the inner side clearance can be adjust when you put the magnet in it's a,b,c,d position 4 side clearance available
Strong magnet for resisting high temperature
72.5mm overal length
With N35EH neodymium magnet magnet holder for diamond core drill bit magnet holder for diamond core drill bit Normally when brazing the segment,the rule is:
Inner side clearance=(segment width-steel core width)x0.4
Outer side clearance=(segment width-steel core width)x0.4
Following is the reference for the segment size and steel core width for different diameter
Diameter(mm) Segment No. Segmen Size(mm) Segment Thickness Steel Core Thickness
D25 3 15*3.5*9mm 3.5mm 2.0mm
D32 4 15*3.5*9mm 3.5mm 2.0mm
D38 5 20*3.5*9mm 3.5mm 2.0mm
D44 5 20*3.5*9mm 3.5mm 2.0mm
D52 5 24*3.5*10mm 3.5mm 2.0mm
D58 5 24*3.5*10mm 3.5mm 2.0mm
D63 6 24*3.5*10mm 3.5mm 2.0mm
D76 7 24*3.5*10mm 3.5mm 2.0mm
D89 8 24*3.5*10mm 3.5mm 2.0mm
D102 9 24*4.0*10mm 4.0mm 2.0mm
D108 10 24*4.0*10mm 4.0mm 2.5mm
D114 10 24*4.0*10mm 4.0mm 2.5mm
D127 11 24*4.0*10mm 4.0mm 2.5mm
D140 11 24*4.0*10mm 4.0mm 2.5mm
D152 12 24*4.0*10mm 4.0mm 2.5mm
D167 12 24*4.0*10mm 4.0mm 2.5mm
D180 14 24*4.5*10mm 4.5mm 3.0mm
D200 14 24*4.5*10mm 4.5mm 3.0mm
D230 15 24*4.5*10mm 4.5mm 3.0mm
D250 16 24*4.5*10mm 5.0mm 3.5mm
 magnet holder for diamond core drill bit FAQ   1.Isn´it difficult to braze? What do I need to start retipping myself?
If you have no experience on how to braze you will learn quick - we will provide you with all the information you may need and what equipment to choose. Practice on a bit or two and you will soon get the grip.
2.What do I need to start?
When you order your retipping equipment from us, to decide what knife and matrix to choose, inform us what segment length you use for your retipping. 24 mm length is the most common in Europe. (1” for USA.)
For the brazing we recommend acetylen/ oxygen gas and a torch head with a concentrated flame. (More information comes with your first magnet shipment.) This you buy at you local supplier.To start brazing with magnets a good quantity may be 12 pcs of magnet. Then you normally can braze core bits up to Ø 150 mm (6”) in one set. Silver for the brazing and flux specially suited for these kind of jobs you can order from us.
3.How many segments shall I put on?
Along with the equipment comes a chart showing recommended number of segments for each diameter. You are free to change according to your wishes. If you are drilling in very hard materials - or if you want to drill faster - or if you have a weak machine - you put on less segments.   4.What segment width shall I choose?
First depending on the steel thickness - you need a clearance on both sides of at least 0.5 mm (.02”) on the smallest bits. On the outside of the bit you may have a little more clearance than on the inside. The more power on the machine or the more abrasive material the bigger clearance is to prefer.   5.What is the life on the magnets?
The magnets can be used several thousand times.   6.Can I also buy only the steel barrels and that way manufacture my own new bits?
Yes, of course you can manufacture new bits on your own by purchasing only the barrels. HUAZUAN Advantage magnet holder for diamond core drill bit   Application magnet holder for diamond core drill bit Packaging & Shipping magnet holder for diamond core drill bit magnet holder for diamond core drill bit About US - HUAZUAN magnet holder for diamond core drill bitmagnet holder for diamond core drill bit magnet holder for diamond core drill bitmagnet holder for diamond core drill bit  Contact Us magnet holder for diamond core drill bit 

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