- The drilling line is reeved in parallel.
- The crown frame is made of high strength steel shapes & plates. The lug plate for top drive is provided. It is equipped
with metal base plate, handrail, and toeboard. A ladder has an opening.
- A deviation fast-line sheave.
- The sheave cluster is tilted to counteract traveling block’s torque. The side plate assembly is faced with derrick man
for ease of picking off & suspending elevators.
- The sheave grooves are intermediate frequency quenched so as to provide surface hardness and extend service life of sheaves.
- All sheaves have double-row conical roller bearings and each bearing has individual lubricating channel.
- The rope guard prevents the wire rope from running out of the sheave grooves.
- Equipped with wooden bumper blocks and retainer net.
- Equipped with a frame crane for use in repairing the sheaves cluster.
- Equipped with sand line sheaves and auxiliary sheaves.
- The sheaves and bearings are interchangeable with those of matching travelling block.
- The crown blocks conform to API Spec. 8A/4F and API monogram is permitted to be used.
|Max. hook load||kN||1350||1700||2250||3150||4500||5850|
|O.D. of sheaves||mm (in)||915(36)||1005(40)||1120(44)||1270(50)||524(60)||1524(60)|
|Number of sheaves||5||6||6||7||7||8|
|Dia. of wire line||mm (in)||29 (11/8)||29 (11/8)||32 (11/4)||35 (13/8)||38 (11/2)||42 (15/8)|
|Overall dimension (L×W×H)||mm||2500×2050×1920||2687×2150×2046||3200×3347×3640||3295×2776×2514||3068×2906×3576||3070×3000×3600|
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