Description
Elevator door operator pulley 60*20 32*20 Brief Introduction
|
Product Name |
Elevator door operator pulley |
| Model Number | 60*20
32*20 |
|
Quality
|
Original.Brand New
|
|
Payment
|
T/T. Paypal. Western Union
|
|
Delivery
|
3-5 Working Days
|
|
Packaging
|
Packed by carton
|
Elevator Door Operator Pulley 60*20 & 32*20: Precision Components from Nanjing Zhuye Elevatorparts
The elevator door operator system relies on precision pulleys to ensure smooth, quiet, and reliable door movement—these pulleys act as the “transmission backbone” that reduces friction between the door panel and guide rail. The Elevator Door Operator Pulley 60*20 and 32*20, exclusively supplied by Nanjing Zhuye Elevatorparts, are two core specifications tailored for different elevator door system models. Compliant with international standards including GB 7588 and EN 81-20, these pulleys are precision-manufactured to match the load-bearing and structural requirements of mainstream elevator brands such as Schindler, OTIS, KONE, and domestic brands like Mitsubishi. The 60*20 (diameter * width) pulley is designed for heavy-duty door systems (e.g., large-capacity freight elevators, high-traffic passenger elevators), while the 32*20 pulley suits standard passenger elevator door operators. Both specifications are ideal for new installations and maintenance replacements, delivering consistent performance trusted by elevator professionals.
Nanjing Zhuye Elevatorparts adheres to a stringent quality control system, and the 60*20 & 32*20 elevator door operator pulleys are testaments to this commitment. Each pulley undergoes rigorous testing, including wear resistance trials, load-bearing capacity verification, balance tests, and corrosion resistance assessments. Both specifications feature a high-strength aluminum alloy hub paired with a wear-resistant polyurethane (PU) outer ring—this combination minimizes noise (≤55dB during operation) and reduces wear on door guide rails. The 60*20 pulley boasts an enhanced load-bearing capacity of up to 200kg, while the 32*20 pulley offers a reliable 100kg load capacity, both meeting the dynamic load requirements of their respective door systems. Precision ball bearings are embedded in the hub, ensuring low rotational resistance (≤0.5N) and a service life of over 15,000 operating hours. The pulleys’ surfaces are treated with anti-oxidation coating, enabling stable performance in the harsh environment of elevator door compartments (temperature range: -20℃ to 65℃).
Usage Guide for Elevator Door Operator Pulley 60*20 & 32*20
Proper selection, installation, and maintenance are crucial to maximizing the performance of the 60*20 & 32*20 door operator pulleys. Nanjing Zhuye Elevatorparts strongly recommends that only certified elevator maintenance technicians perform these procedures to avoid door system malfunctions. Before installation, confirm the correct pulley specification: the 60*20 pulley is for heavy-duty door systems, while the 32*20 is for standard systems. Verify that the pulley’s dimensions, inner hole diameter, and mounting method match the elevator door operator’s specifications. Refer to the product manual provided by Nanjing Zhuye Elevatorparts or consult our technical team for model-specific compatibility guidance.
1. Pre-Installation Preparation
Begin by cutting off the elevator’s main power supply and the door operator’s dedicated power supply, then lock the power switch and place a “Maintenance in Progress” warning sign at the elevator entrances and machine room to prevent accidental activation. Prepare essential tools: a screwdriver, pliers, torque wrench, wire brush, special lubricant (provided by Nanjing Zhuye Elevatorparts), and a measuring tape. Clean the door operator’s transmission mechanism and installation area to remove dust, debris, and old lubricant residues—contaminants are a leading cause of pulley and bearing failure. Inspect the new 60*20 or 32*20 pulley for any external damage, bearing jamming, or PU ring defects; do not use defective products. Additionally, check the door operator’s guide rail and shaft for wear or deformation, as damaged components will accelerate pulley failure.
2. Installation & Wiring
Carefully remove the old pulley by unscrewing the fixing bolts on the door operator’s bracket. For the 60*20 pulley (heavy-duty application), ensure the bracket is reinforced to bear the higher load; for the 32*20 pulley, confirm the bracket matches its smaller dimensions. Align the new pulley (60*20 or 32*20) with the mounting shaft, ensuring the PU ring’s groove perfectly fits the door operator’s belt or rope—misalignment will cause abnormal wear and noise. Secure the pulley with the specified bolts, following the recommended tightening torque (1.2-1.8 Nm for 60*20; 1.0-1.5 Nm for 32*20) to avoid damaging the bearing or bracket. After installation, adjust the pulley’s position using a measuring tape to ensure the door panel moves parallel to the guide rail, with a uniform gap between the pulley and transmission component. Apply the special lubricant from Nanjing Zhuye Elevatorparts to the pulley’s bearing and contact surface to reduce friction. Manually rotate the pulley to confirm smooth operation without jamming.
3. Debugging & Daily Operation
After installation, conduct a comprehensive debugging test. Restore power and test the door opening/closing function through normal operation, checking for smooth movement, uniform speed, and no abnormal noise (critical for passenger comfort). For the 60*20 pulley in heavy-duty scenarios, test with full-load door operation to confirm stability; for the 32*20 pulley, verify standard load performance. During daily operation, incorporate both pulley specifications into the elevator’s regular maintenance plan (recommended monthly inspection). Clean the pulley’s surface and PU ring regularly with a wire brush to remove dust and debris; reapply lubricant every 3 months (more frequently for 60*20 pulleys in high-traffic areas). Regularly check for PU ring wear—if the ring is worn to expose the aluminum hub, or if the bearing produces abnormal noise, take immediate action. Avoid slamming the elevator doors or allowing foreign objects to jam the transmission mechanism, as this will damage the pulley.
Replacement Cycle of Elevator Door Operator Pulley 60*20 & 32*20
The replacement cycle of the 60*20 & 32*20 door operator pulleys depends on specification, operating frequency, working environment, and maintenance conditions. Under normal parameters—elevator runs 12-24 hours daily, door opening/closing times ≤2000 times/day, and the door compartment is dry and well-ventilated—Nanjing Zhuye Elevatorparts recommends: 3-4 years for the 60*20 pulley (due to higher load-bearing demands) and 4-6 years for the 32*20 pulley. These timelines are based on long-term field data, accounting for PU ring wear, bearing fatigue, and the different stress levels of each specification.
For high-traffic areas (e.g., shopping malls, airports) where door opening/closing times ≥3000 times/day, or harsh environments (high humidity, heavy dust, frequent temperature fluctuations), shorten the cycle: 1.5-2.5 years for 60*20 and 2-3 years for 32*20. High-frequency operation and harsh conditions accelerate wear, especially for the 60*20 pulley under heavier loads. For low-usage elevators (e.g., villa elevators, daily operation <8 hours) in stable environments, extend the cycle: 4-5 years for 60*20 and 6-8 years for 32*20. However, annual professional inspections by Nanjing Zhuye’s technicians are mandatory to confirm pulley wear, bearing performance, and alignment, in line with GB/T18775 maintenance standards.
Immediately replace the 60*20 or 32*20 door operator pulley if any of the following issues occur, regardless of service life: severe PU ring wear (exposing the aluminum hub); bearing jamming or abnormal noise leading to unsmooth door movement; pulley deformation causing uneven door gaps or scraping against transmission components; loose mounting leading to pulley wobble; or frequent door system malfunctions caused by pulley defects. Timely replacement is critical to maintaining elevator operation efficiency and passenger safety—failure of either pulley specification can lead to complete door system failure.
The Elevator Door Operator Pulley 60*20 & 32*20 from Nanjing Zhuye Elevatorparts are precision-engineered components tailored for different elevator door system demands, integrating durability, low noise, and wide compatibility. Their strict quality control ensures they meet the performance requirements of both heavy-duty and standard applications. By following the recommended usage guidelines and replacement cycles, you can significantly reduce door system failure rates and extend the elevator’s overall service life. Nanjing Zhuye Elevatorparts provides 100% authentic 60*20 & 32*20 door operator pulleys, along with professional support including specification selection, on-site installation guidance, and timely after-sales service. Choose Nanjing Zhuye Elevatorparts for reliable and compatible components for your elevator door operator systems.
