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GIN, MASTHEAD, HEEL, DERRICK, TOPPING BLOCKS
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IS-7248/1973
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Note: Cargo blocks are fitted with double roller bearing on sheaves and has great strength. The sizes are available from 12" to 18" and is recommended for smooth operations under heavy loads. |
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key plans symbols generally used on ships
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| Sheave Dia. (mm) |
SWL (tons) |
TEST (tons) |
Wire Rope Dia. (mm) |
Weight Approx each (kgs) |
| 14 (340) |
5 |
20 |
24 |
66 |
| 14 (340) |
6 |
24 |
28 |
68 |
| 14 (340) |
8 |
32 |
25-29 |
75 |
| 16 (410) |
8 |
32 |
25-29 |
90 |
| 16 (410) |
10 |
40 |
29-32 |
93 |
| 18 (460) |
15 |
60 |
32-36 |
130 |
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Single Sheave Block with Taper Roller Bearing
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| Sheave Dia. (mm) |
SWL (tons) |
TEST (tons) |
Wire Rope Dia. (mm) |
Weight Approx each (kgs) |
| 14 (340) |
10 |
20 |
24 |
90 |
| 14 (340) |
12 |
24 |
28 |
95 |
| 14 (340) |
15 |
30 |
28 |
99 |
| 16 (410) |
16 |
32 |
29-32 |
140 |
| 16 (410) |
20 |
40 |
29-32 |
148 |
| 18 (460) |
30 |
60 |
32-36 |
210 |
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Double Sheave Block with Taper Roller Bearing
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| Alternate Design of Head Fittings |
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