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KENNA PERFECT – TOP NOTCH Threading

4 Easy Steps to Improve Productivity

44

th Step – Select Holder from Catalog Page

Note: The insert size must match the gage insert size of your toolholder selection:

Required information:

catalog numbergage insert •external/internal operation•minimum bore diameter (for internal operations) •hand of tool •insert size (gage insert) Select the appropriate holder for the insert size and hand NSR-163DNSR-164DN.3RN.4R NOTE: TOPNOTCH toolholders and boring bars are listed with a gage insert to indicate the sizeand hand required. They are compatible with both grooving and threading inserts of the same size. NOTE: Optimize your threading operation by using the proper infeed angle and the recommended infeed values. See the Technical section on pages C58-C60 of this catalog. For internal threading, min. bore varies depending on thread type – see C64 for details.
TECHNICALDATATOPNOTCHLT

TOPNOTCH Threading Example:

application:8 TPI Acme internal right-hand threadmaterial:alloy steel workpiece dia.:4.5 inch (114,3 mm)good cutting conditionsfeed toward the chuck
THREADING TOOLS

Recommendation:

insert: NA3L8 grade:KC5010 insert size::3boring bar:A40NER3 (metric: A50UNNTOR4)gage insert:N.3Lspeed:500 sfm (150 m/min)infeed passes*:12 passes * Infeed recommendations given in Technical data section on pages C58 - C60.

C33