Step Drag Bits – 3 Wing – Box

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2020年12月14日

Chevron Drill Bits

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Drag bit







Drag bits are welded solid at the nose for durability. Blades originate from 4140 heat-treated tool steel forgings. Forgings are milled to better seat the carbide inserts. Relief is hand ground behind carbide inserts for maximum performance.


Drag bits have a wide range of drilling applications including environmental, exploration, geothermal, water well, road construction, and natural gas and oilfield drilling. The best application for these types of drill bits is softer, unconsolidated formations like clays, shale, sands, and soft limestone. The most common styles are either step type or chevron type bits.



Step Drag Bits – 3 Wing – Box specifications
DescriptionPart #Lbs.Kg
ACRO Box
3 7/8″ (98mm) Step Drag Bit, ACRODB378SACROB5.52.5
MJR Box
3 7/8″ (98mm) Step Drag Bit, MJR BoxDB378SMJRB5.52.5
4 3/4″ (121mm) Step Drag Bit, MJR BoxDB434SMJRB104.6
5 1/4″ (133mm) Step Drag Bit, MJR BoxDB514SMJRB104.6
5 1/2″ (140mm) Step Drag Bit, MJR BoxDB512SMJRB125.6
5 5/8″ (130mm) Step Drag Bit, MJR BoxDB558SMJRB125.6
5 7/8″ (149mm) Step Drag Bit, MJR BoxDB578SMJRB125.6
6″ (152mm) Step Drag Bit, MJR BoxDB600SMJRB125.6
6 1/8″ (156mm) Step Drag Bit, MJR BoxDB618SMJRB125.6
6 1/4″ (159mm) Step Drag Bit, MJR BoxDB614SMJRB125.6
6 1/2″ (165mm) Step Drag Bit, MJR BoxDB612SMJRB125.6
6 3/4″ (172mm) Step Drag Bit, MJR BoxDB634SMJRB125.6
7″ (178mm) Step Drag Bit, MJR BoxDB700SMJRB146.5
7 1/2″ (191mm) Step Drag Bit, MJR BoxDB712SMJRB146.5
7 7/8″ (200mm) Step Drag Bit, MJR BoxDB778SMJRB146.5
8 1/2″ (216mm) Step Drag Bit, MJR BoxDB812SMJRB167.4
8 3/4″ (222mm) Step Drag Bit, MJR BoxDB834SMJRB167.4
9″ (229mm) Step Drag Bit, MJR BoxDB900SMJRB167.4
9 1/2″ (241mm) Step Drag Bit, MJR BoxDB912SMJRB188.3
9 7/8″ (251mm) Step Drag Bit, MJR BoxDB978SMJRB188.3
10″ (254mm) Step Drag Bit, MJR BoxDB1000SMJRB188.3
FEDP Box
4 3/4″ (121mm) Step Drag Bit, FEDP BoxDB434SFEDPB104.6
5 1/4″ (133mm) Step Drag Bit, FEDP BoxDB514SFEDPB104.6
5 1/2″ (140mm) Step Drag Bit, FEDP BoxDB512SFEDPB125.6
5 5/8″ (130mm) Step Drag Bit, FEDP BoxDB558SFEDPB125.6
5 7/8″ (149mm) Step Drag Bit, FEDP BoxDB578SFEDPB125.6
6″ (152mm) Step Drag Bit, FEDP BoxDB600SFEDPB125.6
6 1/8″ (156mm) Step Drag Bit, FEDP BoxDB618SFEDPB125.6
6 1/4″ (159mm) Step Drag Bit, FEDP BoxDB614SFEDPB125.6
6 1/2″ (165mm) Step Drag Bit, FEDP BoxDB612SFEDPB125.6
6 3/4″ (172mm) Step Drag Bit, FEDP BoxDB634SFEDPB125.6
7″ (178mm) Step Drag Bit, FEDP BoxDB700SFEDPB146.5
7 1/2″ (191mm) Step Drag Bit, FEDP BoxDB712SFEDPB146.5
7 7/8″ (200mm) Step Drag Bit, FEDP BoxDB778SFEDPB146.5
8 1/2″ (216mm) Step Drag Bit, FEDP BoxDB812SFEDPB167.4
8 3/4″ (222mm) Step Drag Bit, FEDP BoxDB834SFEDPB167.4
9″ (229mm) Step Drag Bit, FEDP BoxDB900SFEDPB167.4
9 1/2″ (241mm) Step Drag Bit, FEDP BoxDB912SFEDPB188.3
9 7/8 (251mm) Step Drag Bit, FEDP BoxDB978SFEDPB188.3
10″ (254mm) Step Drag Bit, FEDP BoxDB1000SFEDPB188.3
MR Box
4 3/4″ (121mm) Step Drag Bit, MR BoxDB434SMRB104.6
5 1/4″ (133mm) Step Drag Bit, MR BoxDB514SMRB104.6
5 1/2″ (140mm) Step Drag Bit, MR BoxDB512SMRB125.6
5 5/8″ (130mm) Step Drag Bit, MR BoxDB558SMRB125.6
5 7/8″ (149mm) Step Drag Bit, MR BoxDB578SMRB125.6
6″ (152mm) Step Drag Bit, MR BoxDB600SMRB125.6
6 1/8″ (156mm) Step Drag Bit, MR BoxDB618SMRB125.6
6 1/4″ (159mm) Step Drag Bit, MR BoxDB614SMRB125.6
6 1/2″ (165mm) Step Drag Bit, MR BoxDB612SMRB125.6
6 3/4″ (172mm) Step Drag Bit, MR BoxDB634SMRB125.6
7″ (178mm) Step Drag Bit, MR BoxDB700SMRB146.5
7 1/2″ (191mm) Step Drag Bit, MR BoxDB712SMRB146.5
7 7/8″ (200mm) Step Drag Bit, MR BoxDB778SMRB146.5
8 1/2″ (216mm) Step Drag Bit, MR BoxDB812SMRB167.4
8 3/4″ (222mm) Step Drag Bit, MR BoxDB834SMRB167.4
9″ (229mm) Step Drag Bit, MR BoxDB900SMRB167.4
9 1/2″ (241mm) Step Drag Bit, MR BoxDB912SMRB188.3
9 7/8″ (251mm) Step Drag Bit, MR BoxDB978SMRB188.3
10″ (254mm) Step Drag Bit, MR BoxDB1000SMRB188.3
2 3/8″ IF Box
4 3/4″ (121mm) Step Drag Bit, 2 3/8″ IF BoxDB434S238IFB104.6
5 1/4″ (133mm) Step Drag Bit, 2 3/8″ IF BoxDB514S238IFB104.6
5 1/2″ (140mm) Step Drag Bit, 2 3/8″ IF BoxDB512S238IFB125.6
5 5/8″ (130mm) Step Drag Bit, 2 3/8″ IF BoxDB558S238IFB125.6
5 7/8″ (149mm) Step Drag Bit, 2 3/8″ IF BoxDB578S238IFB125.6
6″ (152mm) Step Drag Bit, 2 3/8″ IF BoxDB600S238IFB125.6
6 1/8″ (156mm) Step Drag Bit, 2 3/8″ IF BoxDB618S238IFB125.6
6 1/4″ (159mm) Step Drag Bit, 2 3/8″ IF BoxDB614S238IFB125.6
6 1/2″ (165mm) Step Drag Bit, 2 3/8″ IF BoxDB612S238IFB126.5
6 3/4″ (172mm) Step Drag Bit, 2 3/8″ IF BoxDB634S238IFB125.6
7″ (178mm) Step Drag Bit, 2 3/8″ IF BoxDB700S238IFB146.5
7 1/2″ (191mm) Step Drag Bit, 2 3/8″ IF BoxDB712S238IFB146.5
7 7/8″ (200mm) Step Drag Bit, 2 3/8″ IF BoxDB778S238IFB146.5
8 1/2″ (216mm) Step Drag Bit, 2 3/8″ IF BoxDB812S238IFB167.4
8 3/4″ (222mm) Step Drag Bit, 2 3/8″ IF BoxDB834S238IFB167.4
9″ (229mm) Step Drag Bit, 2 3/8″ IF BoxDB900S238IFB167.4
9 1/2″ (241mm) Step Drag Bit, 2 3/8″ IF BoxDB912S238IFB188.3
9 7/8″ (251mm) Step Drag Bit, 2 3/8″ IF BoxDB978S238IFB188.3







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