1/2"-20UNF use for 14mm to 30mm hole saws

5/8"-18UNF use for 32mm to 210mm hole saws

Bi-Metal Hole Saws Operating Speed & Important

IMPORTANT!

For sale use of hole saws use the correct rotation speed. The correct speed for each size is given in the table.

For longer saw life and lower operating costs, the following recommendation need to be observed:

1. Use the correct arbor for the size saw to be used.

2. Use pin-type arbors for hole saws larger than Dia.32. When mounting, Lift up the disc with the pins and then screw the arbor down into the hole saw as far as it will go. Fit the drive pins into the pin holes in the hole saw by turning the hole saw backwards. Push the pins in .Check that they are securely locked.

3. Check regularly to make sure the drive pins are in the right position.

4. Check that the arbor shank is securely inserted in the chuck on the drive unit. Tighten with chuck key.

5. Cutting oil should be used when sawing steel. Do not use cutting oil when sawing cast iron. The cutting pressure should, however, be high so that each tooth cuts deep. Paraffin can be used when sawing aluminium.

6. Use the correct rotation speed! Too high or too low a speed will decrease the life of the cutting edge.

7. If the hole saw vibrates during sawing, the teeth may became damaged and break. The result is often a rough, imperfect hole.

8. Apply the hole saw perpendicular to the workpiece. If the hole saw is titled, this will cause uneven loading and abnormal wear on both the saw teeth and the grilling machine. Moreover, the dimensional accuracy of the hole saw can be affected.

9. Clear away chips and slugs frequently in order to prevent overheating.

Item No.	Mild Steel	Tool Stainless	Cast Iron	Brass	Aluminum	Wood
10101014	580	300	400	790	900	3000
10101016	550	275	365	730	825	3000
10101017	500	250	330	665	750	3000
10101019	460	240	300	600	690	3000
10101020	435	230	290	580	660	3000
10101021	425	210	280	560	635	3000
10101022	390	195	260	520	585	3000
10101024	370	185	245	495	555	3000
10101025	350	175	235	470	525	2700
10101027	325	160	215	435	480	2700
10101029	300	150	200	400	450	2700
10101030	285	145	190	380	425	2400
10101032	275	140	180	360	410	2400
10101033	260	135	175	345	390	2400
10101035	250	125	165	330	375	2400
10101037	240	120	160	315	360	2400
10101038	230	115	150	300	345	2400
10101040	220	110	145	290	330	2100
10101041	210	105	140	280	315	2100
10101043	205	100	135	270	305	2100
10101044	195	95	130	260	295	2100
10011046	190	95	125	250	285	2100
10101048	180	90	120	240	270	2100
10101051	170	85	115	230	255	2000
10101052	165	80	110	220	245	2000
10101054	160	80	105	210	240	2000
10101057	150	75	100	200	225	2000
10101059	145	75	100	195	225	2000
10101060	140	70	95	190	220	2000
10101064	135	65	90	180	205	1800
10101065	130	65	85	175	200	1800
10101067	130	65	85	170	195	1800
10101068	130	65	85	170	195	1800
10101070	125	60	80	160	185	1800
10101073	120	60	80	160	180	1800
10101076	115	55	75	150	170	1500
10101079	110	55	70	140	165	1500
10101083	105	50	70	140	155	1500
10101086	100	50	65	130	150	1200
10101089	95	45	65	130	145	1200
10101092	95	45	60	120	140	1200
10101095	90	45	60	120	130	1200
10101098	90	45	60	120	135	1200
10101102	85	40	55	110	130	1000
10101105	80	40	55	110	120	1000
10101108	80	40	55	110	120	900
10101111	80	40	50	100	120	900
10101114	75	35	50	100	105	900
10101121	70	35	45	95	95	900
10101127	65	30	40	90	90	800
10101133	65	30	45	90	90	800
10101140	60	25	40	85	85	800
10101146	60	25	40	85	85	800
10101152	55	25	35	75	75	800