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Smith Berger Marine, Inc.
Mooring and Towing Solutions / Salmon Processing Equipment Since 1903
Products
MARCO Purse Seine Powerblocks
How to choose a powerblock for your vessel.
| Marco Powerblock Side by Side Comparison | ||||||
| Dimension | B19 | B26 | B28 | B29 | B32 | B33 |
| NET GIRTH | 30" | 35" | 37" | 38" - 43.7" | 35" | |
| MAX RECOMMENDED HYDRAULIC FLOW |
15 GPM | 45 GPM at 2000 PSI | 45 GPM at 2000 PSI | 45 GPM at 2000 PSI | 45 GPM at 2000 PSI | 70 GPM at 2000 PSI |
| HYDRAULIC PRESSURE (PSI) | 1500 | 2000 | 2000 | 2000 | 2000 | 2000 |
| PULL IN LBS AT 1/2 RADIUS | 950 | 4,000 - 7,600 | 4,650 - 6,975 | 4,650 - 8,815 | 3,340 - 9,500 | 4,880 - 7,480 |
| SHEAVE SPEED (FPM) | 173 - 264 | 173 - 271 | 173 - 261 | 168 - 376 | 325 - 500 | |
| SHEAVE SPEED (RPM) | 62 | 42-63 | 35-54 | 35-53 | 29-65 | 54-83 |
| WEIGHT PLAIN (LBS) | 148 LBS | 340 | 430 | 425 | 610 | N/A |
| WEIGHT W/GRIP (LBS) | 220 LBS | 500 | 620 | 615 | 795 | N/A |
| WEIGHT W/GRIP AND SWIVEL (LBS) | N/A | 615 | 710 | 700 | 905 | 940 |
| HEIGHT PLAIN | 41" | 53" | 40" | 44" | 48" | N/A |
| HEIGHT W/GRIP | N/A | 54" | 50" | 44" | 56" | N/A |
| HEIGHT W/GRIP AND SWIVEL | N/A | 60.5" | 69" | 64" | 73" | 73.5" |