M.I. Pulley Block | Malleable Iron Wire Rope Pulley Block
Our M.I. block is manufactured from premium malleable iron, providing reliable strength and durability for light to medium-duty lifting and pulling applications. Designed for smooth rope movement and reduced friction, this pulley block is widely used in construction sites, workshops, warehouses, and utility maintenance.
The compact and durable design makes it suitable for wire rope handling, load redirection, and manual lifting systems.
Features
- Made of high-quality malleable iron
- Durable and corrosion-resistant finish
- Smooth sheave operation
- Suitable for wire rope and rope guiding
- Compact and lightweight design
- Easy installation and maintenance
Specifications
| TYPE | S.W.L | HOOK | EYE | FOR WIRE DIA | N.W | ||
| KN(T) | A1 | A2 | B | C | (mm) | (kg) | |
| (mm) | (mm) | ||||||
| 3″x1 | 2(0.2) | 203 | 164 | 57 | 39 | 12 | 0.9 |
| 4″x1 | 4(0.4) | 262 | 232 | 76 | 45 | 16 | 1.2 |
| 5″x1 | 5(0.5) | 278 | 270 | 92 | 49 | 18 | 2 |
| 6″x1 | 10(1) | 346 | 340 | 112 | 60 | 24 | 3.5 |
| 7″x1 | 11(1.1) | 388 | 350 | 112 | 64 | 28 | 5.1 |
| 8″x1 | 13(1.3) | 415 | 390 | 163 | 68 | 30 | 7.6 |
| 9″x1 | 15(1.5) | 450 | 420 | 180 | 75 | 32 | 11.4 |
| 10″x1 | 18(1.8) | 492 | 460 | 200 | 75 | 34 | 13.4 |
| 3″x2 | 4(0.4) | 203 | 164 | 60 | 62 | 12 | 1.8 |
| 4″x2 | 9(0.9) | 262 | 232 | 76 | 70 | 16 | 2.1 |
| 5″x2 | 11(1.1) | 280 | 272 | 92 | 74 | 18 | 3 |
| 6″x2 | 20(2) | 346 | 340 | 112 | 102 | 24 | 6.2 |
| 7″x2 | 23(2.3) | 388 | 350 | 128 | 101 | 28 | 7.6 |
| 8″x2 | 26(2.6) | 415 | 390 | 163 | 111 | 30 | 11.3 |
| 9″x2 | 30(3) | 450 | 420 | 180 | 123 | 32 | 16.8 |
| 10″x2 | 30(3) | 492 | 460 | 200 | 117 | 34 | 19.3 |
| 4″x3 | 10(1) | 262 | 232 | 76 | 82 | 16 | 2.6 |
| 5″x3 | 15(1.5) | 280 | 272 | 92 | 100 | 18 | 4 |
Should I choose a Single Sheave or Double Sheave M.I. Block?
A: This depends on your Mechanical Advantage needs. A single sheave block is used to change the direction of pull. A double sheave block (or block and tackle system) allows you to reduce the effort required to lift a load—theoretically, a double block can reduce the pulling force needed by over 50%.
Which is better: Hook Type or Eye Type?
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Hook Type: Offers quick and easy attachment, ideal for temporary rigging where the block needs to be moved frequently.
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Eye Type: Provides a more permanent and secure connection. It is often used with a shackle for long-term installations where maximum security is required.
Can M.I. Blocks be used in marine or outdoor environments?
A: Yes. While our standard blue-painted blocks are suitable for dry environments, we recommend our Zinc-plated (Galvanized) version for marine, offshore, or high-humidity areas to prevent rust and corrosion.
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