B500 Doodad™ Whip Guide Bushings
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Drill straighter gun barrels with whip guide bushings from F.J. Feddersen.
F.J. Feddersen’s 35 mm (B500 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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Info | SKU | Series | Gun Drill Size | Tube Diameter | Bushing ID | Pricing |
|---|---|---|---|---|---|---|
 | D1.00-5 | B500 Series 35 mm | 1.03 | 1.00 In. 25.40 mm | 0.984 In. 24.99 mm | $4.80$6.00 |
| D734-5 | B500 Series 35 mm | 0.75 | 0.734 In. 18.64 mm | 0.718 In. 18.23 mm | $4.80$6.00 |
| D750-5 | B500 Series 35 mm | 0.765 | 0.750 In. 19.05 mm | 0.734 In. 18.64 mm | $4.80$6.00 |
| D765 | B500 Series 35 mm | 0.781 | 0.765 In. 19.43 mm | 0.750 In. 19.05 mm | $4.80$6.00 |
| D781 | B500 Series 35 mm | 0.796 | 0.781 In. 19.83 mm | 0.765 In. 19.43 mm | $4.80$6.00 |
| D796 | B500 Series 35 mm | 0.812 | 0.796 In. 20.21 mm | 0.781 In. 19.83 mm | $4.80$6.00 |
| D812 | B500 Series 35 mm | 0.828 | 0.812 In. 20.62 mm | 0.796 In. 20.21 mm | $4.80$6.00 |
| D828 | B500 Series 35 mm | 0.843 | 0.828 In. 21.01 mm | 0.812 In. 20.62 mm | $4.80$6.00 |
| D843 | B500 Series 35 mm | 0.859 | 0.843 In. 21.41 mm | 0.828 In. 21.03 mm | $4.80$6.00 |
| D859 | B500 Series 35 mm | 0.875 | 0.859 In. 21.81 mm | 0.843 In. 21.41 mm | $4.80$6.00 |
| D875 | B500 Series 35 mm | 0.89 | 0.875 In. 22.22 mm | 0.859 In. 21.81 mm | $4.80$6.00 |
| D890 | B500 Series 35 mm | 0.906 | 0.890 In. 22.6 mm | 0.875 In. 22.22 mm | $4.80$6.00 |
| D906 | B500 Series 35 mm | 0.921 | 0.906 In. 23.01 mm | 0.890 In. 22.60 mm | $4.80$6.00 |
| D921 | B500 Series 35 mm | 0.937 | 0.921 In. 23.39 mm | 0.906 In. 23.01 mm | $4.80$6.00 |
| D937 | B500 Series 35 mm | 0.953 | 0.937 In. 23.79 mm | 0.921 In. 23.39 mm | $4.80$6.00 |
| D953 | B500 Series 35 mm | 0.968 | 0.953 In. 24.2 mm | 0.937 In. 23.79 mm | $4.80$6.00 |
| D968 | B500 Series 35 mm | 0.984 | 0.968 In. 24.58 mm | 0.953 In. 24.20 mm | $4.80$6.00 |
| D984 | B500 Series 35 mm | 1 | 0.984 In. 24.99 mm | 0.968 In. 24.58 mm | $4.80$6.00 |