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Bimetal hole saws

551

TECHNICAL FEATURES:
Perfect round back plate.
• ​​​​​​​Fast & easy center drill change.
• ​​​​​​​Thick steel body.
 
Bimetal Plus 8% Cobalt
Premium bi-metal with 8% cobalt provides Xtreme results in performance and up to 50% longer lifetime than the competition.
 
Tooth design
Special tooth geometry with regular pitch provides a smoother cut and better chip clearance preventing clogging and heat build-up. Teeth are alternate & side set to minimize binding and friction, requiring less feed pressure.
Application
Materials:
Metals (up to 1000 N/mm2 strenght).
Mild steel.
Stainless steel.
Non-ferrous metals, aluminium.
Sandwich materials.
Cast Iron.
Copper, zinc, brass.
 
Speed kills! Operating at higher speeds than those recommended will shorten hole saw life and produce very inefficient cutting.
 
Feed pressure: variables in material, work configuration should be considered. Apply sufficient feed pressure to aid good chip removal. Reduce the pressure when hole saw becomes hot or if teeth start to clog with material. Insufficient feed pressure will dull tooth points prematurely, but too much pressure can totally destroy teeth.Operating at higher speeds than those recommended will shorten hole saw life and produce very inefficient cutting.
 
Cooling lubricant: Cutting oil serves several purposes when sawing in metals. It cools saw and workpiece, reduces heat and abrasion, which can shorten cutting lef, also aids removing sward from the cutting surface.Using a cooling lubricant will extend your hole saw life by 500%.
 
Percussion/hammer action mode must be turned off when using these hole saws.
 
Order No. Metal RPM Stainless steel RPM Cast iron RPM Aluminium RPM
551-016 550 270 370 800
551-019 470 230 310 670
551-020 440 220 290 640
551-022 400 200 270 580
551-025 350 170 230 510
551-027 330 160 220 470
551-029 310 150 200 440
551-030 300 140 190 430
550-040 800 680 680 320
551-032 280 140 180 400
551-035 250 120 170 370
551-038 230 110 150 340
551-043 210 100 140 300
551-044 200 100 130 290
551-048 180 90 120 270
551-051 170 85 110 25
551-054 160 80 110 240
551-057 160 75 100 220
551-060 150 70 95 210
551-064 140 70 90 205
551-068 130 65 80 185
551-070 130 60 80 185
551-073 120 60 80 180
551-076 120 55 75 170
551-079 110 55 70 165
551-083 105 50 70 155
551-086 105 50 65 150
551-089 100 50 65 145
551-092 95 45 60 140
551-102 85 45 55 130
551-108 80 40 55 120
551-127 70 35 45 90
551-133 65 35 45 90
551-140 65 30 40 85
551-168 55 25 35 75
         
Cooling
lubricant
Cutting oil Cutting oil dry cut Turpentine



 

Variations
Filter
Item Code D H S MAT RH-LH
551-016
16 38 HEX BIM RH
551-019
19 38 HEX BIM RH
551-020
20,6 38 HEX BIM RH
551-022
22 38 HEX BIM RH
551-025
25,4 38 HEX BIM RH
551-027
27 38 HEX BIM RH
551-029
28,5 38 HEX BIM RH
551-030
30 38 HEX BIM RH
551-032
31,75 38 HEX BIM RH
551-035
34,9 38 HEX BIM RH
551-038
38,1 38 HEX BIM RH
551-040
40 38 HEX BIM RH
551-043
42,8 38 HEX BIM RH
551-044
44,4 38 HEX BIM RH
551-048
47,6 38 HEX BIM RH
551-051
51 38 HEX BIM RH
551-052
52 38 HEX BIM RH
551-054
54 38 HEX BIM RH
551-057
57 38 HEX BIM RH
551-060
60 38 HEX BIM RH
551-064
64 38 HEX BIM RH
551-065
65 38 HEX BIM RH
551-068
68 38 HEX BIM RH
551-070
70 38 HEX BIM RH
551-073
73 38 HEX BIM RH
551-076
76 38 HEX BIM RH
551-079
79 38 HEX BIM RH
551-083
83 38 HEX BIM RH
551-086
86 38 HEX BIM RH
551-089
89 38 HEX BIM RH
551-092
92 38 HEX BIM RH
551-102
102 38 HEX BIM RH
551-105
105 38 HEX BIM RH
551-108
108 38 HEX BIM RH
551-114
114 38 HEX BIM RH
551-127
127 38 HEX BIM RH
551-133
133 38 HEX BIM RH
551-140
140 38 HEX BIM RH
551-152
152 38 HEX BIM RH
551-168
168 38 HEX BIM RH
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