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Diatip™ CD 7-28 Core Bit Retipping Machines

2-1/8" - 28" Bit Diameter


Part No. DR5005


CD 7-28 Manual

The CD 7-28 works without electrical power, without noise, without sparks, waste or scrap. Cuts off the worn end while at the same time making notches for the new segment on drill bits with diameters from 2-1/8” up to 28” with a length of up to 22”. The Diatip system cuts all bit seats perfectly true to the threads with a clean edge ready for segment attachment. No lathe turning or face grinding are required, saving both time and money.

The CD7-28 can be equipped with a hydraulic motor for the cutting, an extension to accommodate up to 40” diameter bits, and an extension for bits up to 40” long.

Diatip™ Accessories
Description Part No.
Hydraulic Motor DR5004
Superstrong Flux Magnet - each magnet has four different side clearances: 0.02”/0.03”/0.04” and 0.05” (0.5mm/1.0mm & 1.25mm)(Standard for segments 2” - 16”) 151167
US magnet, each magnet has four different side clearances: 0.06”/0.07”/0.08”/ and 0.09” (1.5mm/1.78/2.03mm/2.3mm (for larger segments) 151627
Silver Solder (flat strip) 49% Silver 151333
Matrice 1-3/8” - 2-1/2” dia 16 mm seg 151325
Knife 16 mm seg. 151326
Knife - 24mm seg. 151168
CD7-28 Ext. 18” 151181
CD7-28 Ext. 12” 151193
CD 600 Ext. 36” 151238