THINK MILLING, THINK KENNAMETAL - Kennametal - (Version JPG) - Page n° 479 - PDF Catalogue | Technical Documentation

KENNAMETAL

Application and Technical Information

Thread Milling System (TMS)

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2D 2C

Minimum Bore Diameters for Thread Milling UN-ISO-BSW


cutter	tpi	48	32	24	20	16	12	10	8	7	6	5.5	5	4.5	4
	pitch mm	0,5	0,75	1,0	1,25	1,5	2,0	2,5	3,0	3,5	4,0	4,5	5,0	5,5	6,0
	cutter dia. (D1)	minimum bore diameter (D) (inches)
K035TM1RW050-STN10	.35	.374	.394	.421	.449
K045TM1RW050-STN11N	.45	.472	.492	.520	.547	.571
K049TM1RW037LT11S	.49	.512	.531	.559	.587	.610
K061TM1RW062-STN16T	.61	.630	.650	.667	.705	.728	.768	Applications in this area may be machined with special inserts and cutter bodies. Quoted on request.
K067TM2RW075-STN11D	.67	.693	.717	.748	.772	.787	.827
K075TM1RW075-STN16T	.75	.776	.803	.827	.850	.866	.906
K079TM1RW075-STN16N	.79	.815	.843	.866	.890	.906	.945
K087TM1RW100-STN16L	.87	.893	.921	.945	.969	.984	1.024
K102TM2RW100-STN16D	1.02	1.051	1.079	1.102	1.130	1.154	1.193
K118TM1RW100-STN27N	1.18	1.209	1.236	1.260	1.291	1.319	1.362	1.441	1.535	1.654	1.772	1.890
K146TM1RW125-STN27N	1.46	1.496	1.520	1.555	1.591	1.614	1.654	1.732	1.830	1.929	2.047	2.185
K165TM2RW125-STN27D	1.65	1.701	1.724	1.772	1.811	1.831	1.866	1.929	2.047	2.146	2.268	2.401
	1.38 (UN)	—	—	—	—	—	—	—	—	—	1.969	—	1.843	—	—
	1.38 (ISO)	—	—	—	—	—	—	—	—	—	1.969	2.102	1.673	1.969	2.264
	1.38 (BSW)	—	—	—	—	—	—	—	—	—	1.961	—	1.831	—	—

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Cutting Data Recommendation


workpiece material	cutting speed (sfm)	feed rate per revolution (inch)
workpiece material	grade KC635M	feed rate per revolution (inch)
carbon steels < 187 HB	300 - 700	.004 - .008
carbon steels 187 to 220 HB	300 - 500	.004 - .006
alloy steel 200 - 250 HB	200 - 425	.004 - .006
alloy steel 250 - 325 HB	150 - 300	.004 - .006
stainless steel, austenitic < 210 HB	300 - 450	.004 - .006
stainless steel, martensitic < 321 HB	250 - 350	.002 - .006
stainless steel, ferritic < 245 HB	350 - 550	.002 - .004
cast steel < 140 HB	350 - 550	.002 - .006
cast steel 220 - 302 HB	225 - 425	.002 - .004
titanium alloys	200 - 400	.001 - .003
high-temperature (nickel and iron base)	75 - 150	.001 - .002
high-temperature (cobalt base)	50 - 100	.001 - .002
cast iron	250 - 350	.002 - .006
malleable iron	250 - 400	.001 - .003

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NOTES:

• All thread milling inserts are full profile or cresting type.

• Inserts are designed to mill full thread depth in one revolution or pass.

• When machining difficult materials, two passes may be desired. A 60% thread depth on the first pass, and a 40% thread depth on the second pass is recommended.

• Thread relief grooves in blind holes are not necessary.

• Thread milling large parts requires considerably less horsepower compared to other threading methods.

• Thread milling produces short chips compared to stringy chips of other threading methods.

• One holder is suitable for many different thread pitches.

• PVD-coated inserts provide maximum tool life for a wide variety of materials.

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To place an order, contact Kennametal or your authorized Kennametal distributor, or visit www.kennametal.com.

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THINK MILLING, THINK KENNAMETAL - Kennametal - #479

Boring bar, Carbide milling cutter, Chamfering tool, Shoulder milling cutter, Counterbore