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Shop Closed: December 25-29

Office Closed: December 25-26

December 27-29: Office Hours 9-3

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We will be closed on January 1

Phone: (805) 584-9495 | Fax: (805) 584-9629

CBN Tipped Insert Speed and Feed Chart

Material BHN/Rc Speed Range
(SFM)
Cutting Conditions
Max Doc
ACD & ATD
Max Doc
ACP & ATP
Feed
Ipr
Heat Treated Alloy 45-60 Rc 200-600 0.01 0.04 .001-.005
Tool Steel 45-60 Rc 200-600 0.01 0.04 .001-.005
Nodular Iron N/A 600-1500 0.009 0.035 .001-.005
Pearlitic Iron 220-240 BHN 600-2500 0.009 0.035 .001-.007
White/Chilled Iron 54-60 Rc 200-500 0.008 0.035 .001-.005
Super Alloy Ni Base 240-475 BHN 200-800 0.008 0.035 .001-.005
Cobolt Based Alloy, Stellite 45-55 Rc 200-500 0.008 0.035 .001-.005
Inconels 45-55 Rc 200-500 0.008 0.035 .001-.005

SFM = Surface Feet per Minute

AS THE DOC DECREASES THE FEED RATE CAN INCREASE

SCT CBN inserts are excellent for continuous cutting of a wide range of hardened steels, powdered metals, cast irons and super alloys. The inserts are precision ground with hones for machining to sub-micron finishes with maximum tool life. CBN tipped inserts can take the place of grinding.

Applications

Hard Cast Iron Pumps
Impellers
Shafts
Soft Cast Iron Engine Blocks
Brake Rotors
Transfer Housings
Hardened Steel Pinion Gears
Shafts
Bearings
Super Alloys Turbine Disk
Turbine Blade
Engine Shafts

Application Guidelines

  • Make sure the machine and setup is ridged and solid - chatter will cause chipping.
  • Tool height when boring should be slightly above center - tool deflection will put the tool on center.
  • Do not stop the machine with the tool in cut - this will result in tool breakage.
  • Do not use coolant - this could cause thermal cracking.
  • Do not contact the tool to a hard surface prior to the machining process - this will cause chipping.
  • Depth of cut should not exceed 30% of CBN tip length.