Determining saw speeds

To make certain your saw runs at the correct RPM's for the diameter of a blade, use the chart below. Chart is based on motors running at 1750 RPM. Left hand column lists diameter of the motor pulley, while the top column across lists the diameter of the pulley on the equipment. With these two pulley diameters, you can locate the RPM speed of that particular setup. For instance, a motor pulley diameter of 3.0" with an equipment pulley of 2.5" will operate a saw blade at 2070 RPM's. Using the chart Guide to Operating Speeds for Blades, you will find this is a proper speed for blades 5" to 10" in diameter. But if your saw takes either a 4" blade or one with 12" or more in diameter, you will need to change pulleys. If you need assistance with determining proper pulley diameters, please call for technical assistance.

Pulley measurements listed in mm (in.) Driven equipment speed in RPM'S. Diameter of pulley on equipment listed across.
Dia. Motor Pulley	32 (1.25)	38 (1.5)	46 (1.75)	51 (2.0)	58 (2.25)	64 (2.5)	76 (3.0)	102 (4.0)	127 (5.0)	165 (6.5)	203 (8.0)	254 (10.0)
32(1.25)	1725	1435	1230	1075	950	850	715	540	430	330	265	215
38(1.5)	2075	1725	1475	1290	1140	1030	850	645	515	395	320	265
45(1.75)	2400	2000	1725	1500	1340	1200	1000	750	600	460	375	315
51(2.0)	2775	2290	1970	1725	1530	1375	1145	850	685	530	430	345
58(2.25)	3100	2580	2200	1930	1725	1550	1290	965	775	595	485	385
64(2.5)	3450	2870	2460	2150	1900	1725	1435	1075	850	660	540	430
76(3.0)	4140	3450	2950	2580	2290	2070	1725	1290	1070	800	615	515
102(4.0)	5500	4575	3950	3450	3060	2775	2295	1725	1375	1060	860	700
127(5.0)	6850	5750	4920	4300	3825	3450	2865	2150	1725	1325	1075	860
165(6.5)	8950	7475	6400	5600	4975	4480	3730	2790	2240	1725	1400	1120
203(8.0)	-	9200	7670	6900	6125	5520	4600	3450	2750	2120	1725	1375
254(10.0)	-	-	9850	8620	7670	6900	5750	4300	3450	2650	2150	1725
302(12.0)	-	-	-	-	9200	8280	6900	5160	4130	3180	2580	2075
381(15.0)	-	-	-	-	-	-	8635	6470	5170	3970	3230	2580
457(18.0)	-	-	-	-	-	-	-	7750	6200	4770	3880	3100