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High speed steel Bi-metal Hole Saws

Categories Hole Saw
Place of Origin: China
Delivery Time: 30days
Payment Terms: TT 50%at first,50%before the goods delivered
Supply Ability: 1000000pcs
MOQ: 1000pcs
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    High speed steel Bi-metal Hole Saws

    Bi-Metal Hole Saws
    One Piece Hole Saw
    Arbors & Accessories
    Kits

    High speed steel Bi-metal Hole Sawsare rugged cutting tools designed to cut accurate holes in machinable materials up to 1-3/8'', 35mm thick. Ranging in size form 9/16",14mm to 6'',152mm in diameter, they can be uses in portable electric, air tools, drill presses, lathes, boring mills, milling machines or any other machine which has a rotating spindle.

    Hole Saws have 4/6 vari-pitch tooth design and are recommended for cutting steel and cast iron pipe, steel plates, aluminium, copper, brass, stainless steel, wood and plastics,Furnished in standard size as listed and in handy assortments.

    IMPORTANT!

    (r/min)
    Dia.Mild
    Steed
    Stainless
    Steel
    Cast IronBrassAluminumWood
    14
    580
    300
    400
    790
    900
    3000
    16
    550
    275
    365
    730
    825
    3000
    17
    500
    250
    330
    665
    750
    3000
    19
    460
    240
    300
    600
    690
    3000
    20
    435
    230
    290
    580
    660
    3000
    21
    425
    210
    280
    560
    635
    3000
    22
    390
    195
    260
    520
    585
    3000
    24
    370
    185
    245
    495
    555
    3000
    25
    350
    175
    235
    470
    525
    2700
    27
    325
    160
    215
    435
    480
    2700
    29
    300
    150
    200
    400
    450
    2700
    30
    285
    145
    190
    380
    425
    2400
    32
    275
    140
    180
    360
    410
    2400
    33
    260
    135
    175
    345
    390
    2400
    35
    250
    125
    165
    330
    375
    2400
    37
    240
    120
    160
    315
    360
    2400
    38
    230
    115
    150
    300
    345
    2400
    40
    220
    110
    145
    290
    330
    2100
    41
    210
    105
    140
    280
    315
    2100
    43
    205
    100
    135
    270
    305
    2100
    44
    195
    95
    130
    260
    295
    2100
    46
    190
    95
    125
    250
    285
    2100
    48
    180
    90
    120
    240
    270
    2100
    51
    170
    85
    115
    230
    255
    2000
    52
    165
    80
    110
    220
    245
    2000
    54
    160
    80
    105
    210
    240
    2000
    57
    150
    75
    100
    200
    225
    2000
    59
    145
    75
    100
    195
    225
    2000
    60
    140
    70
    95
    190
    220
    2000
    64
    135
    65
    90
    180
    205
    1800
    65
    130
    65
    85
    175
    200
    1800
    67
    130
    65
    85
    170
    195
    1800
    68
    130
    65
    85
    170
    195
    1800
    70
    125
    60
    80
    160
    185
    1800
    73
    120
    60
    80
    160
    180
    1800
    76
    115
    55
    75
    150
    170
    1500
    79
    110
    55
    70
    140
    165
    1500
    83
    105
    50
    70
    140
    155
    1500
    86
    100
    50
    65
    130
    150
    1200
    89
    95
    45
    65
    130
    145
    1200
    92
    95
    45
    60
    120
    140
    1200
    95
    90
    45
    60
    120
    130
    1200
    98
    90
    45
    60
    120
    135
    1200
    102
    85
    40
    55
    110
    130
    1000
    105
    80
    40
    55
    110
    120
    1000
    108
    80
    40
    55
    110
    120
    900
    111
    80
    40
    50
    100
    120
    900
    114
    75
    35
    50
    100
    105
    900
    121
    70
    35
    45
    95
    95
    900
    127
    65
    30
    40
    90
    90
    800
    133
    65
    30
    45
    90
    90
    800
    140
    60
    25
    40
    85
    85
    800
    146
    60
    25
    40
    85
    85
    800
    152
    55
    25
    35
    75
    75
    800

    For sale use of hole saws use the correct rotation speed. The correct speed for each size is given in the table.
    For longer saw life and lower operating costs, the following recommendation need to be observed:

    1.Use the correct arbor for the size saw to be used.

    2.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.

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

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

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

    7.If the hole saw vibrates during sawing, the teeth may became damaged and break. The result is often a rough, imperfect hole.

    8.Apply the hole saw perpendicular to the workpiece. If the hole saw is titled, this will cause uneven loading and abnormal wear on both the saw teeth and the grilling machine. Moreover, the dimensional accuracy of the hole saw can be affected.

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








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