HPR Drill• K256 • 8 x D • Internal Coolant • HA Shank

Metric

SAP Material Number	6782614
ISO Catalog Number	K256A03438HPR
ANSI Catalog Number	K256A03438HPR
Grade	KCK10A
[D1] Drill Diameter M	8.7325
[D1] Drill Diameter M	.3438
[L] Overall Length	131.5720
[L] Overall Length	5.180
[L3] Flute Length	87.8840
[L3] Flute Length	3.460
[L4] Maximum Drilling Depth	76.2000
[L4] Maximum Drilling Depth	3.000
[L5] Drill Point Length	2.5600
[L5] Drill Point Length	.1008
[LS] Shank Length	40.386
[LS] Shank Length	1.59
[D] Adapter / Shank / Bore Diameter	9.525
[D] Adapter / Shank / Bore Diameter	.375

P Steel

K Cast Iron

Machine Side

Material Group
		Cutting Speed vc			Metric
		Range m/min			Recommended Feed Rate per Rev
		min	Starting Value	max		3,0	4,0	6,0	8,0	10,0	12,0	16,0	20,0
K	1	130	160	210	mm/r	0,120,22	0,140,25	0,160,32	0,220,44	0,300,46	0,340,50	0,380,62	0,420,74
	2	90	130	180	mm/r	0,120,22	0,140,25	0,160,32	0,220,44	0,300,46	0,340,50	0,380,62	0,420,74
	3	70	90	130	mm/r	0,110,17	0,120,22	0,220,34	0,240,46	0,260,48	0,280,50	0,300,62	0,340,74

Material Group
		Cutting Speed vc			Inch
		Range SFM			Recommended Feed Rate per Rev
		min	Starting Value	max		1/8 .125	3/16 .188	1/4 .250	5/16 .313	3/8 .375	1/2 .500	5/8 .625	3/4 .750
K	1	430	520	690	IPR	.005.009	.006.010	.006.013	.009.017	.012.018	.013.020	.015.024	.017.029
	2	300	430	590	IPR	.005.009	.006.010	.006.013	.009.017	.012.018	.013.020	.015.024	.017.029
	3	230	300	430	IPR	.004.007	.005.009	.009.013	.009.018	.010.019	.011.020	.012.024	.013.029