Technical specifications of use

It's necessary to consider different elements to design circular saw blades: type and thickness of the material to be cut, sawing machine's features, working system, speed and so on.
The basic guide to select the most suitable tool is given by the relationship between: feed speed (U), number of machine's revolutions (n), number of teeth (Z) and  each tooth's feed (Sz) or the chip thickness.
Formulas and charts shown below can orient you to choose the right tool. 


Feed of blade (mm/sec)

         Z number of teeth · n number of revolutions · Sz each tooth's feed
U =  ----------------------------------------------------------------
                                                               1000

Number of teeth
                         
                                   U  feed · 1000

Each tooth's feed (mm/Z)

                                 U feed  · 1000

Number of revolutions (RPM)

                                   U feed  · 1000  

	Peripheral speed (Vp)	(Sz)
Wood	60 ÷ 90	0,3 - 0,5
Plywood	50 ÷ 80	0,2 - 0,4
Compressed	40 ÷ 70	0,1 - 0,2
Thermoplastc	40 ÷ 70	0,15 - 0,2
Hard-plastic	40 ÷ 70	0,08 - 0,15
Masonite	20 ÷ 50	0,15 - 0,25
Aluminium	50 ÷ 90	0,04 - 0,20

Maximum number of revolutions allowed for circular saw blades
Standard cutting speed: 80 m/sec
Maximum cutting speed: 100 m/sec
Econimical cutting speed: 60 m/sec
Minimum cutting speed: 40 m/sec
 

Diam.	Max speed	Eco speed	Min speed
100	19000	15000 - 11000	7600
150	13000	10500 - 7500	5500
200	9500	7500 - 5500	3800
250	8000	6500 - 4500	3100
300	6500	5000 - 3800	2500
350	5500	4500 - 3300	2200
400	4500	3800 - 2500	1900
450	4200	3400 - 2300	1700
500	3800	3000 - 2100	1500
600	3200	2200 - 1900	1300
700	2500	2000 - 1300	1200
800	2200	1800 - 1300	900
900	2000	1600 - 1200	800
1000	1900	1500 - 1100	700
1250	1500	1200 - 900	600

The values above indicated must be adjusted in relation with the material to process and the size of the cutting section.