HOOK BLOCKS

Parallelly- installed springs to sustain the drill string and making the bolt come out from the box ( the threaded connection is thus protected when the tool joint is broken out ); high barring capacity; high-capacity sheave bearings having conical rollers to provide the necessary distance between the rollers with no use of discs or washers; line grooves machined according to the API requirements and hardened on their surfaces for everlasting; quenced-and-tempered forged alloy steel ; central pin holed to provide the individual lubrication of each bearing.

  • MC-type hook blocks whose max.hook values range between 100 t (110 sht ) and 500 t (550sht)
  • MCA-type hook blocks, whose max. hook load is 500 t (550 sht) and which are directly coupled, thus permitting both-way motion parallel and perpendicular to the locking bolt and perpendicular to any face along the vertical axis
  • MCm-type hook blocks featuring three values of the max. hook load, as follows: 250 t (275sht), 450t (500sht), 320t (350sht) and having features due to the Mt new type of blocks and CPt hooks
Type Max. Working Load Sheaves Line Diameter
t sht No. Diameter, mm in
MCA
6-38MCA-500 500 550 6 1,500 1.1/2
6-35MCA-500 500 550 6 1,400 1.3/8
MC
5-35MC-400 400 440 5 1,400 1.3/8
5-32MC-300 300 330 5 1,250 1.1/4
5-32MC-200 200 220 5 1,250 1.1/4
5-28MC-200 200 220 5 1,100 1.1/8
4-28MC-125 125 140 4 1,000 1.1/8
3-25MC-125 125 140 3 750 1
4-25MC-100 100 110 4 750 1
3-25MC-100 100 110 3 750 1
MCm
6-35MCm-500C 450 500 6 1,400 1.3/8
5-32MCm-350C 320 350 5 1,250 1.1/4
5-32MCm-250C 250 275 5 1,120 1.1/4

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