Sandvik Construction provides solutions for construction industries in niches such as quarrying, tunneling, demolition, dimensional stone, recycling and civil engineering.

RP425 Water separating bit sub

The RP425 protects bit bearing life by limiting dust suppression water from entering the bearings, protecting them from water-induced corrosion. It does not require any changes to the drilling parameters, and it eliminates bit sub expenditures.

Features and benefits

  • Highly wear-resistant high alloy steel
  • Either standard cross-over sub or 3 or 4 blade reamer with offset blades
Key Specifications
Length 762 mm to 1219 mm
30" to 48"
Outside diameter
Pin thread
Box thread
165.1 mm
6 1/2"
4" BECO, 4 1/2" BECO
4 1/2" API Reg
177.8 mm
7"
4 1/2" BECO
4 1/2" API Reg
193.68 mm
7 5/8"
5 1/4" BECO 6 5/8" API Reg
219.08 mm
8 5/8"
6" BECO 6" BECO
6 5/8" API Reg
234.95 mm
9 1/4"
6" BECO 6" BECO
6 5/8" API Reg
273.05 mm
10 3/4"
8" BECO 8" BECO
6 5/8" API Reg

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