MCNylon Peg6 Captormal® Elevator Pulley
MCNylon Peg6 Captormal® elevator pulley are where energy efficiency and high performance meet in elevator systems. Unlike traditional cast pulleys, these new-generation plastic pulleys, manufactured from specially engineered plastics using the centrifugal casting method, directly contribute to the sustainability of modern buildings by enabling elevators to operate more lightly, quietly, and with high energy efficiency.
Manufactured with Artı Kasnak quality and assurance, our MCNylon Peg6 Captormal® pulley can be used with perfect stability at speeds of up to 2.5 m/s without requiring any balancing operation, thanks to our advanced production technology. Our approach in the industry is not an ordinary, standard package-system concept; it is a step-by-step, "tailor-made" engineering and production process that takes into account your project's load capacity ($P+Q$), nominal travel speed, rope diameter, pitch structure, and drive system requirements.
Our Captormal® pulleys, which hold TSE-EN and ISO-9001 certifications and offer quality and safety in accordance with international standards, reduce elevator energy consumption, extend the service life of steel ropes, and minimize maintenance costs by preventing wear and corrosion. Manufactured using advanced surface treatment techniques, these plug-and-play plastic pulleys provide perfect compatibility with the elevator shaft structure. In short, the logic is simple: take the high-performance sheave manufactured using centrifugal casting technology to the site, make the connections, and commission it with zero balancing and maximum acoustic comfort.
Practical Solutions for Challenging Loads and Travel Conditions: Advanced Technology with Engineering Plastics
Our elevator sheave manufacturing process begins with a detailed technical requirements analysis. The system's total load, car weight, travel speed, rope type, and dynamic stresses are analyzed before moving on to the computer-aided (CAD/CAM) design phase. The production process begins according to the approved dimensional tolerances.
On our production line, MC Nylon PG6 (Polyamide 6) pulleys are machined with a high surface quality. While bearings are secured with circlips or interference-fit rings in standard projects, thrust (axial) bearing housing combinations that perfectly withstand axial stresses are integrated into heavy-load projects in high-rise and high-traffic buildings. Products are delivered ready for direct on-site installation under a "plug-and-play" concept.
Fast Delivery and Flexible Series Production Capability
Maximum Wear Resistance and Chemical Resistance
Quiet, Vibration-Free, and Comfortable Travel Experience
Reduced Loads on the Motor Shaft and Shaft Structure Through a Lightweight Body
MC Nylon PG6 material offers unique advantages, particularly in high-speed elevators, machine-room-less (MRL) systems, and modernization projects. Its tremendous lightness compared with traditional cast pulleys reduces the motor's starting inertia (moment of inertia). This both optimizes the loads on the motor shaft and directly provides energy savings, supporting green building standards.
Why Choose Them? Advantages of MCNylon Peg6 Captormal® Pulleys
Engineering-plastic-based belt pulleys, which replace traditional cast pulleys in elevator projects, offer unique technical advantages that extend component life and improve energy efficiency. The main reasons why industry professionals choose Captormal® technology are as follows:
1. Maximum Service Life Optimization for Polyurethane Belts
The low coefficient of friction of MC Nylon PG6 material ensures that steel-cored polyurethane belts fit perfectly into the sheave grooves. Thermal heat generated at high speeds in metal pulleys damages the belt structure, causing cracks. The belt pulleys we develop, however, balance heat transfer, guide the belt surface without crushing it, and maximize its service life.
2. Structural Lightness and High Energy Efficiency
Engineering plastics are approximately 80% lighter on average than cast and steel alternatives. This weight saving reduces logistics costs and facilitates on-site installation. Mechanically, reducing the weight of deflection pulleys lowers the system's total dead weight and directly provides energy savings by reducing the motor's initial starting inertia (moment of inertia).
3. Perfect Vibration Damping and Acoustic Comfort
Engineering plastics are approximately 80% lighter on average than cast and steel alternatives. This weight saving reduces logistics costs and facilitates on-site installation. Mechanically, reducing the weight of deflection pulleys lowers the system's total dead weight and directly provides energy savings by reducing the motor's initial starting inertia (moment of inertia).
4. Industrial Corrosion Resistance and Zero Maintenance
Elevator shafts are inherently exposed to high humidity, dampness, and temperature fluctuations. Rust forming on metal surfaces over time causes the belts to fray and break. Manufactured to ISO 9001 standards, our Captormal® belt pulleys do not rust, rot, or corrode. They require no periodic groove maintenance or lubrication throughout their service life.
5. Corrosion Resistance and No Maintenance Requirement
Due to their structure, elevator pits and shaft spaces may be exposed to moisture, dampness, and variable temperatures. Rust and corrosion that develop over time in steel pulleys cause rope grooves to deteriorate and the rope to wear rapidly. Captormal® elevator pulleys are rustproof, rotproof, and more resistant to corrosion. In addition, thanks to their self-lubricating feature, they require no external lubrication or groove maintenance.
Technical Specifications and Production Flexibility
As with the compactness philosophy of container-type systems, space and weight savings play a critical role in elevator sheave manufacturing. The key technical parameters of our products are as follows:
Reduces Additional Structural Building Loads:
Thanks to its lightweight design, it reduces the static load placed on the reinforced concrete structure at the elevator shaft ceiling or on the motor chassis, preserving the building's structural integrity.
Precise Pitch and Groove (Channel) Design:
Special groove angles designed according to requirements and project specifications are machined on our CNC machines with zero-error tolerance. Rope slippage or jamming within the grooves is prevented.
High Compressive and Impact Strength:
Thanks to the optimized molecular density of the Peg6 raw material, cracking, breakage, or permanent deformation does not occur on the sheave surface during sudden braking tests or overloading.
Wide Range of Applications: The Industries We Serve
Our Captormal® elevator sheave products are safely preferred across a very wide range of applications, from areas with the strictest industrial standards to luxury residential projects:
Stretcher and Hospital Elevators:
In healthcare facilities requiring vibration-free travel and zero-decibel acoustic silence.
High-Speed Passenger Elevators:
In high-speed vertical transportation systems in skyscrapers, plazas, and business centers.
Heavy-Duty Freight and Vehicle Elevators:
In heavy-industry elevators transporting high-tonnage loads in factories, warehouses, and parking facilities.
Panoramic Elevators:
For corrosion resistance in shopping center and hotel elevators exposed to the outdoors, where visual aesthetics are a priority.
Ship and Port Elevators:
In maritime applications exposed to saltwater, high humidity, and aggressive outdoor conditions.
How Does the Engineering, Design, and Manufacturing Process Work?
Our production methodology includes a fully controlled and traceable process from raw material to the final product:
Stage 1: Technical Data Collection and Project Analysis
Technical drawings, shaft diameters, number of ropes, rope diameter, pitch distance, and the elevator's total load capacity ($P+Q$) data received from our customers or project engineers are entered into our database.
Stage 2: Raw Material Optimization and Selection
The highest-purity MCNylon PA6 / Peg6 raw material is selected according to the environmental conditions in which the project will operate (temperature, humidity, and load intensity). It is determined whether a Captormal® cast-in coating or a solid plastic sheave will be produced.
Stage 3: Precision CNC Machining and Groove Cutting
The selected engineering plastic blocks are machined at our state-of-the-art CNC lathes and machining centers in accordance with the tolerances specified in the technical drawing. To maximize rope life, the surface roughness values inside the grooves are maintained at the levels prescribed by international standards.
Stage 4: Bearing Housing and Shaft Securing
The bearing seats in the hub of the sheave are machined with micrometer precision. Standard bearing pressing and circlip securing are performed according to our customers' requirements and specifications. In cases involving very high axial loads, thrust bearing mounting designs are applied to reinforce shaft securing.
Stage 5: Balancing Test and Quality Control
All completed pulleys undergo static and dynamic balancing tests to ensure that they do not run out at high speeds or cause vibration on the shaft. Products that pass the zero-defect approval process are labeled and prepared for shipment.
A Sustainable Future and Safe Transportation
A properly designed elevator sheave not only improves the elevator's mechanical performance; it also extends maintenance intervals, thereby reducing operating costs and supporting green energy efficiency. We are proud to offer the elevator industry long-lasting, reliable, and environmentally friendly solutions with the MCNylon Peg6 Captormal® pulleys we manufacture.
Frequently Asked Questions (FAQ)
No; on the contrary, they extend rope life by 2–3 times. By eliminating metal-to-metal friction, they prevent steel rope strands from being crushed, broken, or worn.
They are completely safe. The high-density Polyamide 6 material we use offers superior impact damping and compressive strength. It operates in heavy-duty freight and vehicle elevators without the risk of breakage or cracking.
Yes. Our greatest strength is our project-specific manufacturing capability. According to your requirements, we provide CNC manufacturing for any outer diameter, number of ropes, special groove angle, pitch distance, and bearing shaft diameter.
In standard systems, bearings are pressed into the housing and secured with circlip rings. For heavy-duty projects with high axial loads, we apply special shaft-securing solutions with axial (thrust) bearings according to your requirements.
No, they do not rust. Thanks to their chemical structure, which is unaffected by moisture, dampness, or contact with water, they are ideal for challenging outdoor areas such as exterior panoramic elevators, ports, and shipyards.