Cast Iron Pulleys
Cast Iron Pulley Block, Black Cast Iron Wire Pulley With Forged Hook
A cast iron pulley block with a black cast iron wheel and a forged steel hook, designed for directional force change and friction reduction in rope or cable systems. Available in sizes from 80mm to 200mm diameter, it supports heavy-duty lifting and hoisting applications across construction, mining, marine, and industrial environments. The forged hook provides a secure attachment point, while the cast iron wheel resists wear and maintains structural integrity under repeated load cycles.
- Size
- 80mm - 200mm
- Catalogue Family
- Cast Iron Pulleys
- Certificates
- EN 10204 3.1 material test certificate on request
CAD files are supplied on request via WhatsApp or email rather than published for open download.
Key Benefits
What Cast Iron Pulley Block Gives You
- Black cast iron wheel resists wear and maintains shape under prolonged use with wire rope or cable
- Forged steel hook provides a high-strength attachment point with no risk of casting failure
- Grooved wheel surface guides rope or cable and reduces lateral slippage during load transfer
- Low-friction rotation reduces effort required to pull or lift, improving system efficiency
- Compact design allows integration into tight spaces on hoists, winches, and rigging setups
- No moving parts other than the rotating wheel, minimizing maintenance and failure points
- Cast iron construction handles shock loads and sustained duty cycles without deformation
Application Scenarios
Where Cast Iron Pulley Block Is Used
- Construction site hoisting where wire rope is redirected over a fixed anchor point
- Mining equipment rigging using a pulley block to redirect a hoist line in a confined space
- Marine dockside operations with a pulley block mounted on a bollard or deck fitting
- Industrial machinery where a cable-driven system requires a change in pull direction
- Temporary rigging setups for lifting steel beams or heavy machinery components
- Manual winching operations on trailers or utility vehicles using a hand wheel pulley
- Recovery and towing systems where a pulley block redirects a winch line around a vehicle frame
Who It Is For
Buyers This Product Is Built For
- Construction contractors specifying pulley blocks for crane and hoist systems
- Mining and quarry operators integrating pulley blocks into material handling lines
- Marine and offshore service providers using pulley blocks for mooring and cargo handling
- Industrial maintenance teams requiring durable rope redirection components
- Rigging distributors sourcing reliable pulley blocks for a full rigging kit
- Fleet and towing operators building winch and recovery systems for heavy-duty vehicles
Problems It Solves
Problems This Product Removes
- Rope or cable slipping off the pulley due to lack of groove or poor surface grip
- Wear or deformation of the pulley wheel under repeated heavy load cycles
- Hook failure or breakage in cast pulley blocks with weak or brittle casting
- High friction at the redirection point increasing the force needed to pull or lift
- Need for multiple components to redirect a line when a single pulley block would suffice
- Inconsistent load handling across different pulley types due to mismatched material strength
Technical Features
Technical Features
- Black cast iron wheel with a grooved or V-shaped profile to guide wire rope or cable
- Forged steel hook with a through-pin attachment for secure rigging
- Rotating wheel mounted on a shaft with a bushing or bearing for smooth operation
- No external housing or casing—open design for easy inspection and cleaning
- Stable base design with a mounting hole or eye for attachment to a fixed point
- Standard 4:1 design factor applied unless otherwise specified
- Working load limit stamped on the body for traceability and field use
Specifications
Cast Iron Pulley Block Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity Range | 80mm to 200mm diameter wheel |
|---|---|
| Material | Black cast iron wheel, forged steel hook |
| Wheel Diameter | 80mm, 100mm, 120mm, 140mm, 160mm, 180mm, 200mm |
| Weight Per Unit | 0.67kg to 1.80kg depending on size |
| Pcs Per Carton | 40 to 12 depending on size |
| Surface Finish | Black cast iron, no coating |
| Hook Type | Forged steel hook with through-pin attachment |
Materials
Materials And Finishes
- Black cast iron wheel for wear resistance and load-bearing stability
- Forged steel hook for high tensile strength and impact resistance
- No surface coating—cast iron finish is left natural for durability
- Shaft and bushing components made from hardened steel for long life
Manufacturing Process
How This Product Is Made
1Casting of the iron wheel in a sand or die mold with controlled cooling
2Machining of the groove and mounting surfaces to precise tolerances
3Forging of the hook blank from carbon steel and heat treatment
4Assembly of the hook to the wheel using a shaft and pin
5Final inspection of rotation, fit, and surface quality
6Stamping of working load limit and traceability mark on the body
7Proof load testing and packing for export
Quality Control
Quality Control On Every Batch
- Proof load testing on production batches before release
- Dimensional tolerance check against published size table
- Breaking strength validation to confirm 4:1 design factor
- Rotation check to ensure smooth, free movement without binding
- Material Test Certificate to EN 10204 3.1 issued with the order on request
- Third-party inspection accepted at the Qingdao warehouse before shipment
Customisation
Customisation Options
- Custom tonnage stamping on the body for traceability
- Private label and OEM marking available
- Custom packing configuration for carton count and pallet layout
- Custom size or groove profile built to a supplied drawing
- Alternative hook types or mounting options available on request
Compare
How It Compares With The Alternatives
An honest read on where this pattern wins and where another one would serve you better.
| Alternative | Honest Trade Off |
|---|---|
| Steel pulley block | Cast iron is more wear-resistant for wire rope and quieter in operation, but steel is stronger for shock loading and higher impact duty |
| Plastic or nylon pulley | Cast iron handles heavier loads and abrasion from wire rope; plastic is lighter but fails under high load or heat |
| Pulley with housing | Open cast iron design allows easier inspection and cleaning but offers no protection from debris |
| Aluminum pulley | Aluminum is lighter but less durable under repeated heavy load and prone to deformation |
Use Guide
How To Use And Inspect Cast Iron Pulley Block
- Match the stamped working load limit to the calculated rope load, not the winch rating
- Ensure the rope runs in the groove and does not ride on the outer edge of the wheel
- Inspect the hook and shaft for wear or deformation before each use
- Check that the wheel rotates freely and shows no binding or grit resistance
- Avoid side loading the pulley—keep the pull aligned with the wheel axis
- Retire the pulley if the wheel shows cracks, the hook is bent, or the marking is unreadable
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Answers
Cast Iron Pulley Block FAQ
What sizes are available?
Sizes range from 80mm to 200mm in diameter. The full size table lists the wheel diameter, weight per unit, and pieces per carton.
Is the pulley block suitable for wire rope?
Yes. The grooved cast iron wheel is designed to guide and support wire rope, reducing wear and preventing slippage.
What is the design factor?
A standard 4:1 design factor is applied, meaning the minimum breaking load is four times the stated safe working load.
Can you provide a Material Test Certificate?
Yes. A Material Test Certificate to EN 10204 3.1 is supplied with the order on request.
Can you custom stamp our brand or tonnage?
Yes. Custom tonnage stamping, private label marking, and OEM packing are available.
How are the pulleys packed for export?
Packed in cartons with 12 to 40 units per carton depending on size. We can configure carton count and pallet pattern to suit your warehouse or retail pack.
Do you offer free storage?
Yes. Goods can be held in our Qingdao warehouse free for up to two months while you consolidate shipments.
Need A Quote On Cast Iron Pulley Block
Send the sizes, the finish and the quantity on WhatsApp or by email. You get a priced reply within 24 hours and a straight answer on stock.
We reply within 24 hours on WhatsApp or by email. Send a drawing, a photo or a bill of materials and we will quote it as it stands.