B400 Dood™ Round Hole Whip Guide Bushings

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

B400 Round Hole Whip Guide Bushings by FJFF.J. Feddersen’s 25 mm (B400 Series) Dood ™ Round Hole Whip Guide Bushings are essential accessories for reaming 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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Series
Gun Drill Size
Tube Diameter
Bushing ID
Pricing
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R593-4
B400 Series
25 mm
0.609
0.593 In.
15.06 mm
0.578 In.
14.68 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R601
B400 Series
25 mm
*
0.601 In.
15.26 mm
0.586 In.
14.88 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R609
B400 Series
25 mm
0.625
0.609 In.
15.46 mm
0.593 In.
15.06 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R617
B400 Series
25 mm
*
0.617 In.
15.67 mm
0.601 In.
15.26 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R625
B400 Series
25 mm
0.64
0.625 In.
15.87 mm
0.609 In.
15.46 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R633
B400 Series
25 mm
*
0.633 In.
16.07 mm
0.617 In.
15.67 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R640
B400 Series
25 mm
0.656
0.640 In.
16.25 mm
0.625 In.
15.87 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R648
B400 Series
25 mm
*
0.648 In.
16.45 mm
0.633 In.
16.07 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R656
B400 Series
25 mm
0.671
0.656 In.
16.66 mm
0.640 In.
16.25 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R664
B400 Series
25 mm
*
0.664 In.
16.86 mm
0.648 In.
16.45 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R671
B400 Series
25 mm
0.687
0.671 In.
17.04 mm
0.656 In.
16.66 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R679
B400 Series
25 mm
*
0.679 In.
17.24 mm
0.664 In.
16.86 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R687
B400 Series
25 mm
0.703
0.687 In.
17.44 mm
0.671 In.
17.04 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R695
B400 Series
25 mm
*
0.695 In.
17.65 mm
0.679 In.
17.24 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R703
B400 Series
25 mm
0.718
0.703 In.
17.85 mm
0.687 In.
17.44 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R710
B400 Series
25 mm
*
0.710 In.
18.03 mm
0.695 In.
17.65 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R718
B400 Series
25 mm
0.734
0.718 In.
18.23 mm
0.703 In.
17.85 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R726
B400 Series
25 mm
*
0.726 In.
18.44 mm
0.710 In.
18.03 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R734-4
B400 Series
25 mm
0.75
0.734 In.
18.64 mm
0.718 In.
18.23 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R742
B400 Series
25 mm
*
0.742 In.
18.84 mm
0.725 In.
18.41 mm
$4.40$5.50
B400 Round Hole Doods 25mm Whip Guide Bushing by FJ Feddersen
R750-4
B400 Series
25 mm
0.765
0.750 In.
19.05 mm
0.734 In.
18.64 mm
$4.40$5.50