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URALMASH HOLDING URALMASH HOLDING
HomeProducts and servicesComponents and spare parts Crown blocks
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Crown blocks

Crown block is a stationary part of the travelling system, it is installed on the crown block platform of the derrick.

Purpose:
— suspending of tools or casings;

— round-trip and process operations during well drilling.

Construction:
— frame;
— sheaves sections;
— sheaves assembly
— auxiliary sheaves.

Sheaves sections consists of axes installed on the bearings, clamped on the axis, locked by a screw, followed by installation of cotter-pins into the nut slot. At the top, the sheaves sections are covered by guards.
The sheaves sections axis in the split supports of the frame are fixed against rotation by a plug.
The sheaves on the bearings are fixed by spring rings. For each sheave, there are lubricators for lubrication of the bearings covered with caps on each side on the axis faces. It is necessary to lubricate the bearings with Litol 24 as per GOST 21150-87 and to watch out that there is no excess heat of the bearings, because the lubricant loses its properties at the temperature above 1000С.
To the crown block frame, the blocks for the wire auxiliary blocks for wire, coming from the auxiliary drawworks or from the special devices, are hanging. The upper end of the guide is also fixed to the frame of the crown block of the top drive system. The crown blocks are of 200 to 600 ton load capacity. The crown block is installed on the derrick before its erection.

Catalog

Specifications

Parameters/Model UКB-5-160 UКB-5-200 UКB-6-250 UКB-6-270 UКB-6-300 UКB-6-325 UКB-6-400 UКB-7-400 UКB-7-500 UКB-7-540
Maximum load capacity, t (lbs.) 160 (352740) 200 (440925) 250 (551156) 270 (595248) 300 (661387) 325 (716502) 400 (881849) 400 (881849) 500 (1102311) 540 (1190496)
Grooves for line diameter, in 1-1/8 1-1/8 1-1/8 1-1/4 1-1/4 1-1/4 1-3/8 1-3/8 1-3/8 1-1/2
Sheave outside diameter, in 28.34 44.09 39.37 39.37 44.09 44.09 55.11 55.11 55.11 55.11
Sheave groove bottom diameter, in 24.4 40.15 35.4 35.4 40.15 39.76 50.59 50.59 50.59 50.59
Sheave bearings 42228 42244 97744
LМ
6-42244 97744
LМ
97744
LМ
7097156
М
7097156
М
F-576041,
ТR2 FAG
7097156
М
Dimensions, in
length 88.58 91.33 125.19 52.0 173.03 125.59 170.66 169.88 165.94 170.47
width 70.27 56.69 90.55 91.33 118.11 121.25 118.11 125.59 125.98 151.18
height 71.65 52.04 52.55 56.69 214.56 87.79 228.58 187.08 285.15 218.70
Weight, lbs 3924 7098 8950 22696 16358 13205 22046 21495 32738 25926

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CONTACTS

Russia, 117036, Moscow, 60-letiya Octyabrya pr., 21, bld. 4
Tel.: +7 (495) 783-05-69
Fax: +7 (495) 783-05-68
E-mail: info@ uralmash-ngo.com

ATTENTION

Please note that commercial offers, as well as requests for commercial offers are considered only in writing on the official letterhead, sent by mail, fax or e-mail info@uralmash-ngo.com

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