Stainless Steel Heavy Duty Single/Double Pulley Block Wheel Swivel Lifting Rope

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Stainless Steel Heavy Duty Single/Double Pulley Block Wheel Swivel Lifting Rope

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By HomeDIYer®

Sizes: M15

Types: Single

Quantitys: 1 Pcs

Price:

$3.41 USD

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In stock (500 units), ready to be shipped

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Stainless Steel Pulley Block — Reliable Swivel Lifting for Demanding Applications

When a single point of failure in your rigging or lifting setup isn't an option, you need a pulley block built to hold. Whether you're a rigger, marine operator, arborist, or DIY builder working with rope-based mechanical advantage systems, a corroded or undersized pulley block creates real risk. These stainless steel heavy duty single and double pulley blocks are engineered for users who need consistent, load-bearing performance across wet, outdoor, and industrial environments.

Each pulley block is constructed from stainless steel, offering strong resistance to rust and surface degradation in humid or saltwater-exposed conditions. The swivel attachment point allows the block to rotate freely under load, reducing rope twist and wear. Available in single-wheel and double-wheel configurations, sizes range from M15 (approx. 0.59 in) through M100 (approx. 3.94 in) to match a wide range of rope diameters and load requirements. Sold individually or in sets of 2 or 3 pieces.

Typical use cases include marine deck rigging and sailboat block systems, arborist and tree-rigging rope setups, workshop overhead lifting and load-redirect systems, and DIY zip line or pulley-based mechanical advantage rigs. The swivel design makes these blocks especially suited for stainless steel pulley block for rope lifting, marine-grade swivel pulley block, and heavy duty block and tackle pulley system applications.

🔗 Compatible with fiber rope, wire rope, and synthetic rope — select the size (M15–M100) that matches your rope diameter and working load requirements.

✅ Key Features of These Stainless Steel Pulley Blocks

🔩 Stainless Steel Construction — Resists corrosion and surface oxidation in marine, outdoor, and high-humidity environments, maintaining structural integrity over extended use.
🔄 360° Swivel Attachment — The swivel hook rotates freely under load, preventing rope twist accumulation and reducing wear on both the rope and the block.
⚙️ Single & Double Wheel Options — Single-wheel blocks redirect rope efficiently for simple lifts; double-wheel blocks enable mechanical advantage configurations for heavier loads.
📐 Wide Size Range M15–M100 — Seven size options from 15 mm (0.59 in) to 100 mm (3.94 in) accommodate a broad spectrum of rope diameters and working load requirements.
📦 Flexible Quantity Options — Available in 1, 2, or 3-piece sets so you can build out a complete block-and-tackle system or replace a single unit without overstocking.
🏗️ Versatile Rigging Applications — Suited for marine rigging, arborist rope systems, workshop overhead lifts, and DIY mechanical advantage setups requiring a dependable swivel pulley block.

📐 Technical Specifications — Stainless Steel Pulley Block

Material	Stainless Steel
Wheel Type	Single / Double (see variant options)
Size Range	M15 – M100 (15 mm – 100 mm / 0.59 in – 3.94 in)
Attachment Type	Swivel Hook
Finish	Polished Stainless
Working Load Limit	See variant options
Compatible Rope Type	Fiber rope, synthetic rope, wire rope
Quantity per Order	1 Pcs / 2 Pcs / 3 Pcs (see variant options)
Weight	See variant options

❓ Frequently Asked Questions

How do I choose between the Single and Double wheel pulley block?

A single-wheel pulley block is used to redirect a rope's direction of pull — ideal for simple lifting or rope routing. A double-wheel block allows you to run a rope through two sheaves, creating a mechanical advantage (typically 2:1) that reduces the effort needed to lift a given load. Choose double if you need to lift heavier loads with less force, or single for straightforward redirection tasks.

Which size pulley block do I need for my rope?

Match the pulley block size to your rope diameter. As a general guide: M15 suits ropes up to approximately 6–8 mm, M20 suits 8–10 mm, M25 suits 10–12 mm, M32 suits 12–16 mm, M50 suits 16–22 mm, M75 suits 22–32 mm, and M100 suits larger diameter ropes up to approximately 38–40 mm. When in doubt, size up to ensure the rope runs freely through the sheave without binding.

Is this pulley block suitable for marine or saltwater use?

Yes. The stainless steel construction provides strong resistance to rust and corrosion in saltwater and high-humidity environments. It is commonly used in marine rigging, sailboat deck hardware, and coastal outdoor applications. For prolonged submersion or extreme saltwater exposure, periodic rinsing with fresh water is recommended to maintain long-term performance.

What is the working load limit (WLL) of these pulley blocks?

The working load limit varies by size and wheel configuration. Please refer to the specific variant listing or contact us to confirm the WLL for your selected size. Never exceed the rated working load limit, and always apply an appropriate safety factor for overhead or personnel-adjacent lifting operations.

Does the swivel hook rotate under load?

Yes. The swivel attachment is designed to rotate 360° under load, which prevents rope twist from accumulating during lifting or hauling operations. This extends rope service life and reduces the risk of kinking or uneven wear on the rope at the attachment point.

Can I use these pulley blocks to build a block-and-tackle system?

Yes. These blocks are well-suited for building block-and-tackle mechanical advantage systems. For a basic 2:1 system, use one fixed single block and one traveling single block. For greater mechanical advantage, combine multiple double blocks. The 2-piece and 3-piece quantity options make it convenient to purchase matched sets for a complete rigging configuration.

Are these pulley blocks compatible with wire rope as well as fiber rope?

These blocks are compatible with fiber rope, synthetic rope (such as Dyneema or polyester), and light wire rope, provided the rope diameter matches the sheave groove size of the selected block. For heavy wire rope applications with high shock loads, verify the working load limit and sheave groove profile match your wire rope specification before use.

🛒 Select your size, wheel type, and quantity above, then add to cart.