Gizmo® Gundrill Whip Guides Specifications

The “Nominal Gundrill Size” associated with each Gizmo number is based on Hyper Tool’s  standard tube sizes. However, tube specs can vary between manufactures. In most cases, selecting Gizmos by the Nominal Gundrill Size will be sufficient, but to be sure, we recommend you verify your gundrill’s tube diameter and then choose the largest Gizmo with an ID that is less than or equal to your gundrill’s tube (shank) diameter.

Appropriate Gizmo Bearings and Gizmo Adaptors are listed in the first column (Bearings and Adaptors) . All 100 series Gizmo numbers require a B-100 Bearing and an A-1 Adaptor. All 200 series Gizmos require B-200, bearing and a B-2 adaptor, and so on.

. . . Nominal Gundrill Size . . .
Bearings and Adaptors Gizmo Number Stock Multiple Flutes Inches MM Tube Diameter Gizmo I.D. 2-Flute Web
B-100 Bearing
A-1 Adaptor		 #100 - Solid - - - -
#105 - .078 2.0 .070 .070 -
#106 - .093 2.4 .081 .080 -
#107 - .109 2.8 .096 .090 -
#108 - .125 3.2 .115 .105 -
#109 - .140 3.6 .125 .120 -
#110 - .156 4.0 .130 .130 -
#111 - .171 4.3 .140 .140 -
#112 - .187 4.7 .156 .156 -
#113 - .203 5.2 .171 .171 -
#114 - .218 5.5 .187 .187  -
B-200 Bearing
A-2 Adaptor		 #200 - Solid - - - -
#215 2 .234 5.9 .218 .203 .140
#216 2 .250 6.4 .234 .218 .150
#217 - .265 6.7 .250 .234 -
#218 2 .281 7.1 .265 .250 .168
#219 - .296 7.5 .281 .265 -
#220 2 .312 7.9 .296 .281 .187
#221 - .328 8.3 .312 .296 -
#222 2 .343 8.7 .328 .312 .206
#223 - .359 9.1 .343 .328 -
#224 2 .375 9.5 .359 .343  .225
#225 2 .390 9.9 .375 .359 .234
#226 2 .406 10.3 .390 .375 .244
#227 2 .421 10.7 .406 .390 .250
B-300 Bearing
A-3 Adaptor		 #300 - Solid - - - -
#328 2 .437 11.1 .421 .406 .260
#329 2 .453 11.5 .437 .421 -
#330 2 .468 11.9 .453 .437 .280
#331 - .484 12.3 .468 .453 -
#332 2 .500 12.7 .484 .468 .300
#333 - .515 13.1 .500 .484 -
#334 4 .531 13.5 .515 .500 -
#335 2 .546 13.9 .531 .515 .328
#336 2 .562 14.3 .546 .531 .337
#337 2 .578 14.7 .562 .546  .350
#338 2, 4 .593 15.1 .578 .562 .355
B-400 Bearing
A-4 Adaptor		 #400 - Solid - - - -
#439 2 .609 15.5 .593 .578 .365
#440 2, 4, 6 .625 15.9 .609 .593 .375
#441 - .640 46.3 .625 .609 -
#442 2 .656 46.7 .640 .625 .390
#443 - .671 17.0 .656 .640 -
#444 2 .687 17.4 .671 .656 .412
#445 2 .703 17.9 .687 .671 .422
#446 2 .718 18.2 .703 .687 .430
#447 2 .734 18.6 .718 .703 .440
#448 22 .750 19.1 .734 .718  .450
B-500 Bearing
A-5 Adaptor		 #500 - Solid  
#548 2 .750 19.1 .734 .718 .450
#549 - .765 19.4 .750 .734 -
#550 2 .781 19.8 .750 .750 .468
#551 - .796 20.2 .750 .765 -
#552 2 .812 20.6 .781 ..781 .490
#553 - .828 21.0 .781 .796 -
#554 - .843 21.4 .812 .812 -
#555 - .859 21.8 .812 .828 -
#556 2 .875 22.2 .843 .843 .525
#557 2 .890 22.6 .843 .859 .534
#558 - .906 23.0 .875 .875 -
#559 - .921 26.4 .875 .890 -
#560 2 .937 23.8 .906 .906 .562
#561 2 .953 24.2 .906 .921 .572
#562 - .968 24.6 .937 .937 -
#563 2 .984 25.0 .937 .953 .590
#564 2, 6 1.00 25.4 .968 .968  .600
B-600 Bearing
A-6 Adaptor		 #600 - Solid  
#602 2 1.03 26.2 1.00 .984 .618
#604 2, 6 1.06 27.0 1.00 1.01 .640
#606 - 1.09 27.8 1.06 1.05 -
#608 2 1.12 28.6 1.06 1.08 .675
#610 - 1.15 29.4 1.12 1.11 -
#612 - 1.18 30.1 1.12 1.14 -
#614 2 1.21 30.9 1.18 1.17 .730
#616 2 1.25 31.8 1.18 1.20 .750
#618 - 1.28 32.5 1.25 1.23 -
#620 - 1.31 33.3 1.25 1.26  -
#622 - 1.34 34.0 1.31 1.30 -
#624 2 1.37 34.8 1.31 1.31 .825
#626 - 1.40 35.6 1.37 1.34 -
#628 - 1.43 36.3 1.37 1.37 -
B-700 Bearing
A-7 Adaptor		 #700 - Solid - - - -
#730 - 1.46 37.1 1.43 1.41 -
#732 2 1.50 38.1 1.43 1.44 .900
#736 2 1.56 .9.6 1.50 1.48 .937
#740 - 1.62 41.1 1.50 1.55 -
#744 - 1.62 42.7 1.57 1.61 -
#748 2 1.75 44.5 1.67 1.67  1.055
B-800 Bearing
A-8 Adaptor		 #800 - Solid - - - -
#852 - 1.81 46.0 1.67 1.73 -
#856 - 1.87 47.5 1.80 1.80 -
#860 - 1.93 49.0 1.80 1.86 -
#864 2 2.00 50.8 1.92 1.92 1.200
#880 2 2.25 57.2 2.18 2.18  1.350

 

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