China 36" Hole Opener Body with Sealed Bearing Tooth Cutters

Assembly bit, hole openers
Hole opener drill bit
1. Hole openers are designed for the enlargement of pilot holes and large hole applications. They
Are also used for road and river crossing application.
2. The hole openers are manufactured from AISI 4145H fully heat-treated alloy steel. All are available with carbide-milled teeth and insert cutters. Arms and cutters are hardfaced for protection in three different designs for varying conditions and rock formations. The design of the hole opener allows for field-changing the cutters. They has a wide range of hole opener types, including.
Cutting Structure
The reamer mainly consists of four or more cones. Cutting Structure with premium tungsten carbide hardfacing or premium tungsten carbide insert of formulas and new techniques is utilized, and increases wear-resistance capability of reamer. The pilot is three cone bit( tricone bit ).
Seal and Lubrication
High performance HNBR O-ring for bearing seal and advanced grease for lubrication.
Product Application
It is suitable for the large size well, mining and infrastructure applications.

Technical specifications and parameters for Hole OpenerTypeHole open dia.(in)Qty of cutterMin. pilot hole(in)Fishing neck dia.(in)I.D(in)Top Conn. (pin)Bottom Conn.(box)Overall length(in)HO 31112 1/438 1/281 1/26 5/8REG6 5/8REG55HO 406163109 1/22 1/47 5/8REG7 5/8REG59HO 44417 1/23109 1/22 1/47 5/8REG7 5/8REG59HO 55922312 3/49 1/22 1/37 5/8REG7 5/8REG69HO 58423312 3/4836 5/8REG6 5/8REG69HO 610243141037 5/8REG7 5/8REG69HO 66026317 1/21037 5/8REG7 5/8REG69HO 4-91436426103 1/27 5/8REG7 5/8REG87