Regular Wood Shell Blocks for Manila Rope
These regular mortise wood blocks for manila rope have drop forged fittings. They are available with iron, roller or bronze, self-lubricating bushings. Metal parts may be painted or galvanized.
| Block Size, Inches | 3 | 4 | 5 | 6 | 8 | 10 | 12 | |
| Diameter Rope, Inches | 3/8 | 1/2 | 5/8 | 3/4 | 1 | 1 1/8 | 1 1/4 | |
| Sheave Size Inches |
O.D. | 1 3/4 | 2 1/4 | 3 | 3 1/2 | 4 3/4 | 6 1/4 | 8 |
| Rim Thick | 1/2 | 5/8 | 3/4 | 1 | 1 1/8 | 1 1/4 | 1 3/8 | |
| Ctr. Pin Dia. | 3/8 | 3/8 | 3/8 | 1/2 | 5/8 | 5/8 | 3/4 | |
| Weight in Pounds |
Single | 1/2 | 2 1/2 | 4 | 9 1/2 | 1 | 7 | 25 |
| Double | 1 1/2 | 3 | 4 | 6 1/2 | 13 | 25 | 39 | |
| Triple | 2 | 4 | 5 1/2 | 9 | 17 | 32 | 48 | |
| Working Load Limit* Pounds |
Single | 500 | 1,000 | 1,200 | 1,800 | 2,800 | 4,000 | 5,000 |
| Double | 800 | 1,400 | 1,800 | 2,500 | 3,800 | 6,000 | 8,000 | |
| Triple | 1,200 | 1,800 | 2,400 | 3,200 | 4,800 | 8,000 | 10,000 | |
Heavy Wood Shell Blocks for Manila Rope
These heavy, wide mortise wood blocks have cross bolted shells and drop forged fittings. They have bronze self-lubricating bushings and galvanized metal parts.
| Block Size, Inches | 6 | 8 | 10 | 12 | 14 | 16 | |
| Diameter Rope, Inches | 3/4 | 1 1/8 | 1 1/4 | 1 1/2 | 1 3/4 | 2 | |
| Sheave Size Inches |
O.D. | 3 1/2 | 4 1/2 | 6 1/4 | 8 | 9 1/2 | 11 |
| Rim Thick | 1 | 1 3/8 | 1 1/2 | 1 5/8 | 1 7/8 | 2 1/4 | |
| Ctr. Pin Dia. | 1/2 | 5/8 | 3/4 | 3/4 | 7/8 | 1 | |
| Weight in Pounds |
Single | 5 1/2 | 12 | 23 | 31 | 53 | 68 |
| Double | 9 | 18 | 33 | 48 | 80 | 110 | |
| Triple | 12 | 25 | 43 | 67 | 114 | 156 | |
| Working Load Limit* Pounds |
Single | 2,000 | 3,300 | 5,000 | 6,800 | 9,600 | 12,000 |
| Double | 3,300 | 5,100 | 7,700 | 10,600 | 15,000 | 19,000 | |
| Triple | 4,000 | 7,000 | 10,000 | 14,000 | 20,000 | 24,000 | |
