Cobra Electronics CM/200/1 manual Cutting Speeds, Typical cutting speeds RPM for various materials

Page 17

RLL233

Issue 4 Aug 2007

13] CUTTING SPEEDS.

Typical cutting speeds (RPM) for various materials

Cutter		Surface speed.
dia	9	15	30	45
12	239	398	796	1194
13	220	367	734	1102
14	205	341	682	1023
15	191	318	637	955
16	179	298	597	895
17	168	281	562	842
18	159	265	530	796
19	151	251	503	754
20	143	239	477	716
21	136	227	455	682
22	130	217	434	651
23	125	208	415	623
24	119	199	398	597
25	115	191	382	573
26	110	184	367	551
27	106	177	354	530
28	102	171	341	512
29	99	165	329	494
30	95	159	318	477
31	92	154	308	462
32	90	149	298	448
33	87	145	289	434
34	84	140	281	421
35	82	136	273	409
36	80	133	265	398
37	77	129	258	387
38	75	126	251	377

Cutter		Surface speed.
dia	9	15	30	45
39	73	122	245	367
40	72	119	239	358
41	70	116	233	349
42	68	114	227	341
43	67	111	222	333
44	65	109	217	326
45	64	106	212	318
46	62	104	208	311
47	61	102	203	305
48	60	99	199	298
49	58	97	195	292
50	57	95	191	286
51	56	94	187	281
52	55	92	184	275
53	54	90	180	270
54	53	88	177	265
55	52	87	174	260
56	51	85	171	256
57	50	84	168	251
58	49	82	165	247
59	49	81	162	243
60	48	80	159	239
61	47	78	157	235
62	46	77	154	231
63	45	76	152	227
64	45	75	149	224
65	44	73	147	220

These speeds should be viewed as a suggested starting point only.

The machine speed may require adjustment to suit the application conditions.

Material		Surface speed (M/min)
Aluminium		60-90
Cast iron	Soft	30-50
	Hard alloy	15-21
	Malleable	15-30
Steel	Mild (460 N/mm_)	24-30
	(460-770 N/mm_)	15-27
	(770-1070 N/mm_)	9-15
	1070-1230 N/mm_)	6-9
Stainless	Ferritic	15-18
steel
	Austenitic	12-15
	Martensitic	9-15

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Contents

Cobra Contents of the Manual Do not USE on D.C. Supply Safety Procedures Read Before Using the MachineOperating Instructions Extension Cable Selection Speed SelectionRCL, Rcvl Cutters and PilotsCrwc SRC, Srcv SRA25Remedies for Hole Making Problems Clear cutter Wiring Diagram Exploded View of Complete Machine Parts list for CM/200/1 & CM/200/3 Component Exploded View of Gearbox and Motor Units Part list of motor & gearboxCobra Component Part No. Item Pipe Adaptor KIT RD2311 Brownlive Wiring of Mains PlugYellow REDTypical cutting speeds RPM for various materials Cutting SpeedsCutter diameter and speed relationship High gear Low gear To Refit NEW Cable To Remove OLD Cable from Machine