B300 Doodad™ Whip Guide Bushings

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Drill straighter gun barrels with whip guide bushings from F.J. Feddersen.

B300 Whip Guide Bushings by FJFF.J. Feddersen’s 20 mm (B300 Series) Doodad™ Whip Guide Bushings are essential accessories for drilling straight and accurate gun barrels during manufacturing. The higher the RPM, the more the tube will whip because the tube has been crimped 110-120 degrees off-center. The result is a tube that is out of balance. FJ Feddersen’s Whip Guide Bushings help to tame the whipping by centering the drill. There is no way to stop single flute gun drills from whipping without using guide bushings such as these. FJF Feddersen makes Whip Guide Bushings in the most popular sizes for practically every application up to 65 mm.

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SKU
Series
Gun Drill Size
Tube Diameter
Bushing ID
Pricing
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D421-3
B300 Series
20 mm
0.437
0.421 In.
10.69 mm
0.406 In.
10.31 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D429
B300 Series
20 mm
*
0.429 In.
10.89 mm
0.414 In.
10.51 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D437
B300 Series
20 mm
0.453
0.437 In.
11.09 mm
0.421 In.
10.69 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D445
B300 Series
20 mm
*
0.445 In.
11.30 mm
0.429 In.
10.89 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D453
B300 Series
20 mm
0.468
0.453 In.
11.50 mm
0.437 In.
11.09 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D461
B300 Series
20 mm
*
0.461 In.
11.70 mm
0.445 In.
11.30 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D468
B300 Series
20 mm
0.484
0.468 In.
11.88 mm
0.453 In.
11.50 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D476
B300 Series
20 mm
*
0.476 In.
12.09 mm
0.461 In.
11.70 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D484
B300 Series
20 mm
0.5
0.484 In.
12.29 mm
0.468 In.
11.88 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D492
B300 Series
20 mm
*
0.492 In.
12.49 mm
0.476 In.
12.09 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D500
B300 Series
20 mm
0.515
0.500 In.
12.70 mm
0.484 In.
12.29 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D508
B300 Series
20 mm
*
0.508 In.
12.90 mm
0.492 In.
12.49 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D515
B300 Series
20 mm
0.531
0.515 In.
13.08 mm
0.500 In.
12.70 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D524
B300 Series
20 mm
*
0.524 In.
13.30 mm
0.508 In.
12.90 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D531
B300 Series
20 mm
0.546
0.531 In.
13.48 mm
0.515 In.
13.08 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D539
B300 Series
20 mm
*
0.539 In.
13.69 mm
0.524 In.
13.30 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D546
B300 Series
20 mm
0.562
0.546 In.
13.86 mm
0.531 In.
13.48 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D554
B300 Series
20 mm
*
0.554 In.
14.07 mm
0.539 In.
13.69 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D562
B300 Series
20 mm
0.578
0.562 In.
14.27 mm
0.546 In.
13.86 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D570
B300 Series
20 mm
*
0.57 In.
14.47 mm
0.554 In.
14.07 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D578
B300 Series
20 mm
0.593
0.578 In.
14.68 mm
0.562 In.
14.27 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D585
B300 Series
20 mm
*
0.585 In.
14.85 mm
0.570 In.
14.47 mm
$3.20$4.00
B300 Doodad™ Whip Guide Bushing by FJ Feddersen
D593-3
B300 Series
20 mm
0.609
0.593 In.
15.06 mm
0.578 In.
14.68 mm
$3.20$4.00