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Mast

Product Details:

 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
(front x side)
M(in)
1.7×1.7
(67×67)
2×2
(79×79)
2.1×2.05
(83×81)
2.1×2.05
(83×81)
2.4×2.4
(95×95)
Bottom span
m(ft)
6 (20)
8 (26)
8 (26)
9 (30)
9 (30)
Racking platform Height
m(ft)
17.5 (57.4)
26.5 (87)
26.5 (87)
26.5 (87)
26.5 (87)
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)
Wind withstanding capacity 
No setback, no hook load km/h
(NMPH)
172 (93)
172 (93)
172 (93)
172 (93)
172 (93)
Full setback, no hook load
km/h (nmph)
130 (70)
130 (70)
130 (70)
130 (70)
130 (70)
Mast erecting or lowering down km/h (nmph)
30 (16)
30 (16)
30 (16)
30 (16)
30 (16)
Weight kg
25410
53500
62194
76218
98000