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Twister BitsTM Rail Cutters

Twister Bit
Twister Bit Video

Twister Disposable Rail Bits are the easy to change cutters from Trak-Star. Just insert he cutter and twist. The Twister Bit is automatically held in place.

Twister Bits come in two styles:

  • Gold coated for all around rail drilling
  • Black coated for better performance for fully heated rail.

Available in 3/4" thru 1-11/16" diameters. These cutters are backwards compatible. They can be used in older Trak-Star drills with their flatted areas on the shanks. Twister Arbor Systems are standard on all new Gas and Hydraulic Rail Drills. Retrofit Kits are also available for existing drills.
Twister Cutters offer a clear advantage
 
Fractional Twister Bits™

Cutter Diameter
Decimal Equivalent
GOLD
Part No
BLACK
Part No.
3/4" Diameter Shank Cutters 7/8" (22mm) DOC
Use with Pilot 03635
3/4
.7500
15224
----
7/8
.8750
15228
15328
15/16
.9375
15230
15330
1
1.0000
15232
15332
1-1/16
1.0625
15234
15334
1-1/8
1.1250
15236
15336
1-3/16
1.1875
15238
15338
1-1/4
1.2500
15240
15340
1-5/16
1.3125
15242
15342
1-3/8
1.3750
15244
15344
1-7/16
1.4375
15246
15346
1-1/2
1.5000
15248
15348
1-5/8
1.6250
15252
15352
1-11/16
1.6875
15254
15354
Metric Twister Bits™
3/4" Diameter Shank Cutters 1" (25mm) DOC
Use with Pilot 10527
19mm
.7480
15819
----
22mm
.8661
15822
----
25mm
.9842
15825
----
28mm
1.1025
15828
----
30mm
1.1812
15830
----
32mm
1.2598
15832
----

2" (50mm) Twister Bits™ for Crane & Girder Rail

 

Cutter Diameter
Decimal Equivalent
GOLD
Part No
3/4" Diameter Shank Cutters 2" (50mm) DOC
Use with Pilot 07496
3/4
.7500
15624
7/8
.8750
15628
15/16
.9375
15630
1
1.0000
15632
1-1/16
1.0625
15634
1-1/8
1.1250
15636
1-3/16
1.1875
15638
1-1/4
1.2500
15640
1-5/16
1.3125
15642
1-3/8
1.3750
15644
1-7/16
1.4375
15646
1-1/2
1.5000
15648

Pilots

Standard Twister Bit Pilot
Conversion Pilot
A pilot should always be used when cutting with Twister Bits. It provides two functions: One to release coolant to the cutter and two to eject the slug at the end of the hole. For Part No. See Chart Above The NorFast Conversion Pilot is used with
1-11/16" cutters. It can also be used for enlarging an existing hole. Part no.05784

Bonding Drill Bits

Twister Shank Adapter w/ Bonding Bit
Dia., Dec.
Equiv.		 Part No.
9/32" 0.2813 07305
8mm 0.3149 07302
3/8" 0.3750 05565
13/32" 0.4063 07316
Replacement Bonding Drill Bits Only
9/32" 0.2813 07307
8mm 0.3149 07304
3/8" 0.3750 03452
13/32" 0.4063 07318
Flatted Shank Bonding Drill Bit & Adapter - Old Style
3/8" Adapter ----- 03447
3/8" Bit Only 0.3750 03452

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