~1)Products:HSS Bimetal Hole Saws
Material: HSS Bi metal M3, M42
Teeth: 4/6 variable Sharp Teeth
Cutting depth: 38-47mm (1-1/2"--1-7/8")
Diameter: 14-210mm (9/16"--8-17/64")

2) HSS Bimetal Hole Saws

 

3)Specification Of HSS Bimetal Hole Saws

mm inch Art No. mm inch Art No.
14 6/16" 63000014 65 2-9/16" 63000065
16 5/8" 63000016 67 2-5/8" 63000067
17 11/16" 63000017 68 2-11/16" 63000068
19 3/4" 63000019 70 2-3/4" 63000070
20 25/32" 63000020 73 2-7/8" 63000073
21 13/16" 63000021 76 3" 63000076
22 7/8" 63000022 79 3-1/8" 63000079
24 15/16" 63000024 83 3-1/4" 63000083
25 1" 63000025 86 3-3/8" 63000086
27 1-1/16" 63000027 89 3-1/2" 63000089
29 1-1/8" 63000029 92 3-5/8" 63000092
30 1-3/16" 63000030 95 3-3/4" 63000095
32 1-1/4" 63000032 98 3-7/8" 63000098
33 1-5/16" 63000033 102 4" 63000102
35 1-33/8" 63000035 105 4-1/8" 63000105
37 1-7/16" 63000037 108 4-1/4" 63000108
38 1-1/2" 63000038 111 4-3/8" 63000111
40 1-9/16" 63000040 114 4-1/2" 63000114
41 1-5/8" 63000041 121 4-3/4" 63000121
43 1-11/16" 63000043 127 5" 63000127
44 1-3/4" 63000044 133 5-1/4" 63000133
46 1-13/16" 63000046 140 5-1/2" 63000140
48 1-7/8" 63000048 146 5-3/4" 63000146
51 2" 63000051 152 6" 63000152
52 2-1/16" 63000052 160 6-19/64" 63000160
54 2-1/8" 63000054 165 6-1/2" 63000165
57 2-1/4" 63000057 168 6-5/8" 63000168
59 2-5/16" 63000059 177 6-31/32" 63000177
60 2-3/8" 63000060 200 7-7/8" 63000200
64 2-1/2" 63000064 210 8-17/64" 63000210
OEM order is welcome for HSS bimetal hole saws

4) Packages HSS Bimetal Hole Saws

5)Milling Teeth

6) Testing

Cutting test on stainless steel sheet

7)Specification Of HSS Bimetal Hole Saws

Diameter(mm) Mild Steel Stainless Steel Cast Iron Brass Alumimum Wood Diameter(mm) Mild Steel Stainless Steel Cast Iron Brass Alumimum
14 580 300 400 790 900 3000 51 170 85 115 230 255
16 550 275 365 730 825 3000 52 165 80 110 220 245
17 500 250 330 665 750 3000 54 160 80 105 210 240
19 460 240 300 600 690 3000 57 150 75 100 200 225
20 435 230 290 580 660 3000 59 145 75 100 195 225
21 425 210 280 560 635 3000 60 140 70 95 190 220
22 390 195 260 520 585 3000 64 135 65 90 180 205
24 370 185 245 495 555 3000 65 130 65 85 175 200
25 350 175 235 470 525 2700 67 130 65 85 170 195
27 325 160 215 435 480 2700 68 130 65 85 170 195
29 300 150 200 400 450 2700 70 125 60 80 160 185
30 285 145 190 380 425 2400 73 120 60 80 160 180
32 275 140 180 360 410 2400 76 115 55 75 150 170
33 260 135 175 345 390 2400 79 110 55 70 140 165
35 250 125 165 330 375 2400 83 105 50 70 140 155
37 240 120 160 315 360 2400 86 100 50 65 130 150
38 230 115 150 300 345 2400 89 95 45 65 130 145
40 220 110 145 290 330 2100 92 95 45 60 120 140
41 210 105 140 280 315 2100 95 90 45 60 120 135
43 205 100 135 270 305 2100 98 90 45 60 120 135
44 195 95 130 260 295 2100 102 85 40 55 110 135
46 190 95 15 250 285 2100 105 80 40 55 110 120
48 180 90 120 240 270 2100 

 

 

-----------Basic information for HSS bi-metal hole saw-----------------------

Materials of teeth: M42  (W2Mo9Cr4VCo8)  
                                   M3    (W6Mo5Cr4V3)      
Material of body (except teeth): medium carbon alloy steel

HRC of teeth: 64-66

Teeth type: 4/6 variable teeth
Cutting depth: 38mm

Available to cut the following materials:

wood, plywood, plastics, cast iron, brass, aluminum, mild steel, stainless steel

Pls be advised Bi-metal hole saw by using material M42 is especially good at drilling on stainless steel (better than Bi-metal hole saw by using material M3)

---------------Manual------------------------

Use the correct rotation speed (RPM). The correct speed for each size is given in the table.

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

1. Pls always wear safety equipment when working with electric power tools

    Eye protection and gloves must be used

2. Connection to hole saws

   2.1) Use the correct arbor for the size saw to be used

      there's different kinds of shanks of arbors

             6.35 round shank

             9.52mm hex shank

             9.52mm hex shank

            11.11mm hex shank

    there's two types of thread to fit hole saw:

    thread 1/2--20UNF to fit hole saws 14-30mm
     thread 5/8-18UNF to fit hole saws 32-210mm
2.2) turning arbor into hole saw

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

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

4. 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 aluminum.

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

6. Apply the hole saw perpendicular to the workpiece. If the hole saw vibrates during sawing, the teeth may became damaged and break. The result is often a rough, imperfect hole.

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

-----------Manufacturing procedures------------------------

1. Preparing materials:

    Plate, alloy steel strip, teeth strip

2. Stamping HSS BI-METAL (SIZE) on hole saws

3. Milling teeth

4. Rounding hole saw's body

5. Welding: Plate, Rounded Body, teeth strip

6. Heat treatment: vacuum furnace  

7. Anti-rust treatment: phoshorization

8. Painting color and stamping yr logo

9. Packing

Category: Bi-metal Hole Saw

Related Category: Bi-metal Hole Saw Kits