Description
Elevator door motor pulley YVP90-6S Brief Introduction
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Product Name |
Elevator door motor pulley |
| Model Number | YVP90-6S |
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Quality
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Original.Brand New
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Payment
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T/T. Paypal. Western Union
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Delivery
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3-5 Working Days
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Packaging
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Packed by carton
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Elevator Door Motor Pulley YVP90-6S: Core Transmission Component from Nanjing Zhuye Elevatorparts
The elevator door motor pulley is a key transmission component in the elevator door system, responsible for transmitting the torque of the door motor to the door hanging mechanism, enabling the smooth opening and closing of the elevator car door and hall door. Its transmission accuracy and stability directly affect the door opening/closing speed, noise level, and service life of the entire door system. The Elevator Door Motor Pulley YVP90-6S, exclusively supplied by Nanjing Zhuye Elevatorparts, is meticulously designed for modern passenger and freight elevators. Compliant with international standards such as IEC/EN 60947 and GB 7588, this pulley features a precision-machined structure, high-strength material, and scientific groove design, making it compatible with mainstream elevator brands including Schindler, OTIS, KONE, and domestic well-known brands. It is widely used in residential buildings, commercial complexes, airports, subway stations, and other scenarios, providing reliable transmission support for elevator door systems.
Nanjing Zhuye Elevatorparts has always adhered to strict quality control standards, and the YVP90-6S elevator door motor pulley is a concentrated embodiment of this philosophy. Each pulley undergoes multiple rigorous tests before leaving the factory, including dimensional accuracy testing, wear resistance testing, dynamic balance testing, and corrosion resistance testing. The pulley is made of high-quality aluminum alloy or carbon steel through precision forging and CNC machining, ensuring excellent mechanical strength and wear resistance. The surface is treated with anodizing or electrophoresis, which can effectively resist the erosion of dust, moisture, and other factors in the elevator car and hoistway. The pulley groove adopts a trapezoidal or arc design that matches the door belt, ensuring tight fitting with the belt and avoiding slipping during transmission. In addition, the pulley has undergone strict dynamic balance calibration, reducing vibration and noise during high-speed operation, and improving the overall stability of the door system.
Usage Guide for Elevator Door Motor Pulley YVP90-6S
Correct installation, debugging, and daily maintenance are crucial to ensuring the transmission performance and service life of the YVP90-6S door motor pulley. Nanjing Zhuye Elevatorparts strongly recommends that only professional and certified elevator maintenance technicians perform installation and debugging operations, as improper installation may cause belt slipping, abnormal noise, or even door system failure. Before use, it is necessary to confirm that the model, specification, and groove size of the pulley are completely consistent with the elevator door motor and door belt. For detailed installation steps and debugging standards, you can refer to the product manual provided by Nanjing Zhuye Elevatorparts, or contact our technical support team for professional guidance.
1. Pre-Installation Preparation
First, cut off the main power supply of the elevator and the power supply of the door motor, lock the power switch, and place a “Maintenance in Progress” warning sign at the elevator entrance and machine room to prevent accidental startup. Operate the elevator car to the middle floor and enter the car top through the safety window to access the door motor device. Prepare professional tools such as screwdrivers, torque wrenches, calipers, pulley pullers, and wire brushes. Clean the door motor shaft and the installation area of the pulley to remove dust, rust, and oil stains, as these impurities may affect the fitting accuracy. Carefully inspect the YVP90-6S pulley for external damage, such as cracks on the pulley body, deformation of the groove, or wear of the inner hole. Check whether the matching door belt is intact and has no obvious wear or aging.
DebuggDebugg2. Installation & Adjustment
2. Installation & Wiring
Heat the inner hole of the YVP90-6S pulley appropriately (if necessary) to expand it, then align it with the door motor shaft and install it in place. Ensure that the pulley is closely attached to the shaft shoulder and there is no gap. Fix the pulley with the matching set screw or key, and the tightening torque should strictly follow the specifications provided by Nanjing Zhuye Elevatorparts to avoid slipping between the pulley and the shaft. Install the door belt into the pulley groove, ensuring that the belt is tensioned properly—too loose will cause slipping, and too tight will accelerate the wear of the pulley and belt. Adjust the position of the driven pulley to ensure that the pulley grooves are aligned, and the door belt runs smoothly without deviation. After installation, manually rotate the door motor shaft to check whether the pulley rotates flexibly, and there is no jamming or abnormal noise. Finally, test the door opening and closing operation to confirm that the elevator door runs smoothly and the speed meets the requirements.
3. Daily Maintenance & Use
During daily use, maintenance personnel should conduct regular inspections on the YVP90-6S pulley in accordance with TSG T5002—2017 regulations. Clean the pulley surface and groove with a wire brush monthly to remove dust and debris, and avoid accumulation of impurities affecting the belt transmission. Check the pulley for wear, deformation, or cracks quarterly; if the groove is severely worn (resulting in the belt not fitting tightly), the pulley should be replaced in time. Inspect the tightness of the set screw and the condition of the door belt regularly, and adjust or replace the belt as needed. Lubricate the door motor shaft and pulley connection part annually with special lubricating oil to reduce friction and wear. It is strictly prohibited to hit the pulley with hard objects or modify its structure, so as not to damage the transmission accuracy and cause door system failure.
Replacement Cycle of Elevator Door Motor Pulley YVP90-6S
The replacement cycle of the YVP90-6S elevator door motor pulley is affected by factors such as usage frequency, operating environment, and maintenance quality. Under normal use conditions—elevator operation time is 12-24 hours a day, the number of door opening and closing times per day is within 3000 times, and the operating environment is clean and dry—Nanjing Zhuye Elevatorparts recommends a replacement cycle of 4-6 years. This cycle is formulated based on a large number of field test data and GB/T31821—2015 “Technical Conditions for Scrap of Elevator Main Components”, fully considering the wear of the pulley groove, the deformation of the pulley body, and the aging of the surface treatment layer, which are the main factors affecting the transmission performance.
door opening and closing tim82-4the pulley grooveand deformation of the pulleyainedly6-8semi-pulleydimensional accuracy, groove wear, and rotation stabilityFor elevators in high-traffic areas such as shopping malls, airports, and subway stations, where the daily operation time exceeds 20 hours and the number of starts and stops is frequent, or in harsh environments with high humidity, heavy dust, or large temperature fluctuations in the machine room, the replacement cycle should be shortened to 5-7 years. High-frequency operation and harsh environments will accelerate the aging of the motherboard’s electronic components and increase the risk of faults. For elevators with low usage frequency, such as villa elevators and small office buildings with daily operation time less than 8 hours, if maintained properly and parameters are regularly calibrated, the replacement cycle can be extended to 10-12 years. However, it is necessary to arrange professional technicians from Nanjing Zhuye Elevatorparts to conduct semi-annual inspections on the motherboard, including testing parameter stability, circuit integrity, and component status, to ensure that it meets the operational requirements.
Regardless of the service life, the YVP90-6S pulley should be replaced immediately if any of the following problems occur: the pulley groove is severely worn, the door belt slips frequently, and the door opening and closing speed is slow; the pulley body is cracked, deformed, or has obvious corrosion, affecting structural strength; the pulley rotates with jamming or abnormal noise, which cannot be eliminated by maintenance; the set screw is loose and cannot be fixed, leading to pulley displacement; the pulley fails to meet the dimensional accuracy requirements during inspection. Timely replacement of the pulley is essential to ensure the normal operation of the elevator door system and the safety of passengers.
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