Mast


Product information:

K-type mast features

  • The mast (derrick) is K-type, namely front opening mast.
  • The mast is erected or lowered down integrally by drawworks or self-lifting.
  • The mast is assembled at ground level.  It makes up of several sections connected with double pins for secured connection rigidity.
  • The mast is built of a П shape truss structure, is easy for installation and disassembly and transport.
  • Hydraulic cylinder on each sides of the mast provides bumping function while erection and prime upward push while lower down.
  •  Mast space and height accommodates top-drive unit
  • Conforms to API Spec 4F and marked with API monogram.

Specification: 

Model

JJ135/31.5-K

JJ225/43-K

JJ315/45-K

JJ450/45-K

JJ585/45-K

Max. static load kN

1350

2250

3150

4500

5850

Effective Height m(ft)

31.5 (104)

43 (141)

45 (147)

45 (147)

45 (147)

Top span

1.7×1.7

2×2

2.1×2.05

2.1×2.05

2.4×2.4

(front x side)  m(in)

(67×67)

(79×79)

(83×81)

(83×81)

(95×95)

Bottom span m(ft)

6 (20)

8 (26)

8 (26)

9 (30)

9 (30)

Racking platform Height

17.5 (57.4)

26.5 (87)

26.5 (87)

26.5 (87)

26.5 (87)

m(ft)

16.5 (54.1)

25.5 (83.7)

25.5 (83.7)

25.5 (83.7)

25.5 (83.7)

 

 

24.5 (80.4)

24.5 (80.4)

24.5 (80.4)

24.5 (80.4)

Capacity of racking platform m(ft)

2000 (6560)

4000 (13120)

5000 (16400)

7000 (22960)

9200(301840)

Comments