Top Roller Blocks
Top Roller Block: Framed type
It is a top roller block installed at the stern to run a trawler's main cable.
Its roller is made of forged S45C carbon steel, and its surface is hardened with induction heating to make it abrasion resistant.
| Item No. | Safe Working Load | Sheave Dimension | Body Dimension | Eye Size | Weight | ||
|---|---|---|---|---|---|---|---|
| Diameter | Width | L | B | ||||
| (metric tons) | (mm) | (mm) | (mm) | (mm) | (mm) | (kg) | |
| 3.0 | 300 | 200 | 660 | 265 | 50 | 130 | |
| 6.0 | 350 | 230 | 750 | 300 | 60 | 200 | |
| 8.0 | 400 | 250 | 830 | 330 | 65 | 250 | |
| 10.0 | 450 | 250 | 910 | 330 | 70 | 340 | |
| 12.0 | 500 | 250 | 960 | 335 | 70 | 420 | |
| 15.0 | 600 | 250 | 1080 | 335 | 75 | 530 | |
| 18.0 | 600 | 250 | 1120 | 350 | 85 | 600 | |
| 20.0 | 700 | 255 | 1290 | 360 | 105 | 750 | |
Top Roller Block: Snatch type
It is a top roller block with an open/close hook for easy removal of the main cable from the block.
Its roller is made of forged S45C carbon steel, and its surface is hardened with induction heating to make it abrasion resistant.
| Item No. | Safe Working Load |
Sheave Dimension | Body Dimension | Eye Size |
Weight | ||
|---|---|---|---|---|---|---|---|
| Diameter | Width | L | B | ||||
| (metric tons) | (mm) | (mm) | (mm) | (mm) | (mm) | (kg) | |
| 3.0 | 300 | 200 | 730 | 375 | 50 | 180 | |
| 6.0 | 350 | 230 | 840 | 425 | 60 | 270 | |
| 8.0 | 400 | 250 | 930 | 470 | 65 | 340 | |
| 10.0 | 450 | 250 | 1020 | 500 | 70 | 420 | |
| 12.0 | 500 | 250 | 1090 | 525 | 70 | 540 | |
| 15.0 | 600 | 250 | 1230 | 560 | 75 | 670 | |
| 18.0 | 600 | 250 | 1270 | 590 | 85 | 720 | |
| 20.0 | 700 | 255 | 1480 | 640 | 105 | 1000 | |
