Technical Information

Rough Boring Feed Rates & Machining Allowance

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ALLOWANCE FEED RATES

. Machining Allowance on Diameter (Inches) DOC . Feed Rates (IPR)*
Twin Boring Head Material Optimum Min. Max. For Best Finish Min. Max.
PC2-4205 (.94 – 1.34) Steels .10 .02 .14 .010 .008 .014
Cast Iron .16 .02 .24 .010 .006 .012
Aluminum .12 .02 .24 .010 .006 .012
PC3-4305 (1.26 – 1.70) Steels .12 – .14 .04 .16 – .18 .014 .012 .018
Cast Iron .20 .04 .28 .012 .008 .016
Aluminum .20 .04 .28 .014 .012 .018
PC4-4405 (1.58 – 2.17) Steels .14 – .16 .04 .18 – .20 .014 .012 .020
Cast Iron .24 .04 .31 .012 .008 .016
Aluminum .24 .06 .31 .014 .012 .018
PC5-4505 (2.06 – 3.30) Steels .24 .06 .35 – .47 .018 .012 .024
Cast Iron .39 .04 .55 .016 .008 .018
Aluminum .39 .06 .55 .018 .016 .024
PC6-4605PC6,4606,PC7-4705(2.61 – 6.00) Steels .28 – .39 .06 .35 – .47 .018 .012 .024
Cast Iron .47 .04 .55 .016 .008 .018
Aluminum .47 .04 .55 .018 .016 .024
All Big Bore Above 6.00 Steels .28 – .39 .06 .35 – .47 .018 .012 .024
Cast Iron .47 .04 .55 .016 .008 .018
Aluminum .47 .04 .55 .018 .016 .024