Palram PALSU - Manual (Page 24)

24
Generally Accepted Recommendations for Circular Blade Specifications
Property Units Sign Value
Clearance angle α 10 – 20°
Rake angle γ 5 – 15°
Alternate double-bevel angle (Alt. 1) α° 45°
Alternate bevel angle (Alt. 2) β° 10 – 15°
Cutting speed - m/min. (ft/min) 1,000 - 3,000 (3,300 - 10,000)
Rate of feed mm/sec. (inch/sec.) 30 (11/4)
Thin gauge: 1.5-2.5 mm tooth pitch (1/16” - 3/36” ) Teeth per mm (Teeth per inch) t 2.5 - 6 (10 - 12)
Heavy gauge: 3.2 - 12 mm tooth pitch (1/8” - 1/2” ) Teeth per mm (Teeth per inch) t 6.5 - 8.5 (3 - 4)
Notes:
1. 2 Possible alternatives (Alt 1 & Alt 2, see figures 9a & 9b below) are supplied by different tools manufacturers as alternate beveled teeth for blades intended for cutting
plastics, and both offer satisfactory cuts (line 3 in the table).
2. For sawing thin gauge sheets of less than 2mm thickness, It is recommended to batch together 10 - 15 such sheets, with a thicker (3-4mm) bottom sheet for support.
3. Shearing is the preferable option for cutting a single thin gauge sheet.
Palram Particular Circular Saw Cutting Recommendations
These recommendations are based on technical know-how, particular tests and vast practical experience accumulated during years
of work. These recommendations are to be accepted only as general guidelines.
Figure 8: Typical Circular Saw Blade (segment)
Figure 9a: ALT1 - Alternate Teeth Configuration Figure 9b: ALT2 - Alternate Teeth Configuration