Plastic Pulley and Iron Hook Pulley

Product Overview

This pulley set offers two hanging options for poultry house winch systems: the SL-50 plastic pulley with a plastic hook at 11 g, and the SL-51 pulley with a steel hook at 12 g. Both stand 6 cm tall, with a white plastic housing holding a small wheel. The choice between plastic and steel hooks lets farms match the hook to the lifting load and the corrosion risk of the environment.

The plastic-hook version is light and fully corrosion-free, suited to standard drinker line lifts. The steel-hook version adds a stronger attachment point for heavier or rougher loads, while the pulley wheel itself stays plastic. Both versions share the same 6 cm housing, so they swap on the same mounting points.

Key Features and Benefits

• Two hook options - plastic hook SL-50 for light loads and steel hook SL-51 for stronger attachment.
• 6 cm compact housing - fits tight ceiling spaces where larger pulleys would not fit.
• White plastic wheel and housing - low friction on the rope and blends with other white fittings.
• 11 to 12 g light bodies - add almost no weight to the winch system.
• Interchangeable mounting - both versions share the same housing size for easy swapping.
• Corrosion choices - plastic hook is fully rust-free; steel hook offers stronger grip for heavier loads.

Technical Specifications

• Product names: SL-50 plastic pulley, SL-51 iron hook pulley
• Overall height: 6 cm
• SL-50 plastic hook version: 11 g
• SL-51 steel hook version: 12 g
• Material: white engineering plastic with plastic or steel hook

Materials and Quality

The pulley housing and wheel are molded in white engineering plastic chosen for low rope friction and dust resistance. The plastic hook on SL-50 is molded as part of the housing, while the steel hook on SL-51 is fixed into the housing for a stronger attachment. Each pulley is checked for free wheel rotation and firm hook fit before packing.

The white housing color stays consistent across both versions, so the two pulleys look like one family on the ceiling. We keep both versions produced to the same 6 cm size, so a farm can switch between plastic and steel hooks as lifting needs change.

The plastic hook on SL-50 is molded as a closed loop that will not scratch equipment, while the steel hook on SL-51 is zinc-plated for higher grip. The wheel housing is identical on both, so the choice is only about the hook material.

How to Use and Maintain

Hang the pulley housing on the ceiling support, clip the hook to the line or cable that needs lifting, and thread the winch rope around the wheel. Check that the wheel spins freely before the first lift of the season.

Once a season, inspect the wheel for cracks and the hook for wear; for the steel hook, check for surface rust and replace the pulley if corrosion reaches the load-bearing point. Keep a few spares of both versions in the farm toolbox, so a broken hook can be swapped without interrupting the lifting routine.

Clip the plastic-hook version on light drinker lifts where corrosion-free contact matters, and reserve the steel-hook version for rough curtain or cable attachments. Check the hook opening by hand each season; a bent hook does not stay clipped to its anchor.

Applications

These compact pulleys are used on light winch systems in layer houses, breeder pens and small broiler rows, where a 6 cm housing fits tight ceiling spaces. The plastic-hook version suits standard drinker line lifts, while the steel-hook version suits slightly heavier or rougher attachments.

They are also used on ventilation cable guides and curtain lifting on light-duty runs. Distributors stock both versions together so a dealer can cover both hook choices from one order, and the compact size suits retrofits in older houses with limited ceiling room.

Pulley assemblies in breeder pens and small layer rows use these compact 6 cm units where ceiling space is tight. Farms upgrading from rusted steel hooks often switch to the plastic-hook version for quieter, longer service.

Why Choose Hebei Yilu Shunfeng Breeding Equipment

Hebei Yilu Shunfeng Breeding Equipment Co., Ltd. specializes in poultry feeding, drinking and breeding equipment for farmers and distributors worldwide. Every product is checked before shipment to ensure consistent quality, and orders are packed with export-grade packaging to protect the goods during transport. Our sales team can provide specification sheets, packing details and shipping advice for any order size. If you need more information about these pulleys, packaging options or mixed container loads, please contact us.

Frequently Asked Questions

Q1: What is the difference between SL-50 and SL-51?

SL-50 has a plastic hook at 11 g, while SL-51 has a steel hook at 12 g; both share the same 6 cm housing.

Q2: Which hook should I choose?

Use the plastic hook for standard light drinker line lifts, and the steel hook for heavier or rougher attachment points.

Q3: Can I swap the hooks later?

The two versions share the same housing size, so you can replace a plastic-hook pulley with a steel-hook one on the same mount.

Q4: How do I maintain them?

Check wheel rotation each season, inspect the hook for wear or rust, and keep a few spares of both versions on the farm. Choose the plastic hook for corrosion-free light lifts and the steel hook for rough attachments; we can split a carton between the two versions on request. SL-50 uses a plastic hook at 11 g and SL-51 a steel hook at 12 g, and both share the same 6 cm housing. Tell us which hook material your lifting points see most often, and we will recommend the SL-50 or SL-51 mix. Pick the plastic hook for quiet, corrosion-free lifts and the zinc-plated hook for rougher curtain attachments.