Purpose:
Crown-blocks are elements of hoisting tackle. The system is used for round-trips operations during well development, repair and work-over operations.
Technical data:
| Parameter | for 3D86-1 |
for 3D86-2 |
for UNÎÑ500 |
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| Max. load, kN |
2500 | 2700 | 4000 | 4000 | 5000 | 2500 | 4000 | 4000 | 4000 | 5000 |
| Sheave number |
6 | 6 | 7 | 7 | 7+2 | 6 | 6 | 7 | 7 | 7+2 |
| Line dia., mm |
28 | 32 | 32 | 32 | 35 | 28 | 35 | 32 | 32 | 35 |
| Sheave outside dia., mm |
1000 | 1120 | 1120 | 1120 | 1400 | 1000 | 1400 | 1120 | 1120 | 1400 |
| Groove bottom dia., mm |
900 | 1000 | 1010 | 1010 | 1285 | 900 | 1285 | 1010 | 1010 | 1285 |
| Axle dia., mm |
220 | 220 | 260 | 260 | 280 | 220 | 280 | 260 | 260 | 280 |
| Sheave bearing |
97744ËÌ conic double row 220x 340x100 | 42244 roller cylindrical 220x400x65 |
7097152Ì conic double-row 260x400x104 709755Ì 280õ420õ110 | 97744ËÌ conic double-row 220õ340õ100 |
7097156Ì conic double-row 280x420x110 | 1097976 conic double-row 380õ520õ150 |
7097156Ì conic double-row 280x420x110 |
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| Dimensions, (l×w×h) | 3,2 × 2,6 × 1,3 | 2,3 × 1,4 × 1,3 | 2,2 × 1,5 × 1,6 | 3,2 × 3,2 × 2,4 | 6,8 × 2,4 × 2,2 | 4,4 × 2,8 × 1,8 | 4,4 × 3,2 × 2,2 | 6,8 × 3,1 × 2,2 | 5,1 × 2,3 × 2,2 | 6,9 × 3,3 × 2,4 |
| weight,kg | 3885 | 3430 | 3560 | 6400 | 9515 | 5170 | 8040 | 9925 | 11683 | 11855 |




