Description
Elevator door with shaft and door ball 40*15*18 Brief Introduction
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Product Name |
Elevator door with shaft and door ball |
| Model Number | 40*15*18 |
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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 & Shaft Door Ball (40*15*18): Buffering & Guiding Core from Nanjing Zhuye Elevatorparts
Elevator Door & Shaft Door Ball (dimension: 40*15*18mm) is a critical buffering and guiding component for elevator door systems. Specifically designed to fit the gap and movement trajectory between elevator car doors and shaft landing doors, it is installed at the edge of car doors or landing door frames to reduce impact during door opening/closing, guide the door to move smoothly, and prevent direct metal-to-metal friction. The 40*15*18mm specification is tailored for mainstream elevator door models (including Schindler, OTIS, and KONE), widely applicable to residential, commercial, and industrial elevators—playing a key role in reducing door operation noise, extending door system service life, and ensuring smooth door movement. Exclusively supplied by Nanjing Zhuye Elevatorparts, a professional provider of high-quality elevator mechanical components, the Elevator Door & Shaft Door Ball (40*15*18) fully complies with international elevator safety standards (EN 81-20, GB 7588) and mechanical buffer component specifications. Manufactured with premium polyurethane (PU) or nylon materials and precision molding technology, it features excellent wear resistance, impact elasticity, and noise reduction performance, winning trust from global elevator maintenance teams and manufacturers.
Nanjing Zhuye Elevatorparts adheres to the core philosophy of “Smooth Buffering, Durable Operation” and implements strict quality control for the Elevator Door & Shaft Door Ball (40*15*18). Each batch undergoes multi-stage pre-delivery inspections, including impact elasticity testing, wear resistance verification, temperature stability evaluation, and dimensional accuracy detection. The 40*15*18 door ball adopts advanced materials and technologies: the core material uses high-density PU (Shore hardness 85–90A) or reinforced nylon, balancing impact buffering and structural rigidity—able to withstand 100,000+ times of door opening/closing impact without deformation; the surface is polished to a smooth finish, reducing friction with the door contact surface; the built-in metal insert (stainless steel) ensures firm installation and avoids falling off during vibration; the precise 40*15*18mm dimensions (tolerance ±0.5mm) ensure perfect matching with door system mounting slots. The product is designed to adapt to harsh shaft environments (-30℃ to 80℃, humidity 10%–95%), with strong resistance to aging and corrosion.
Step-by-Step Usage Guide for Elevator Door & Shaft Door Ball (40*15*18)
To maximize the safety performance, buffering effect, and service life of the Elevator Door & Shaft Door Ball (40*15*18), strictly follow the professional guidelines provided by Nanjing Zhuye Elevatorparts for selection, installation, and maintenance:
1. Professional Selection & Pre-Installation Preparation
Installation must be performed by certified elevator technicians. Prior to selection, measure the original door ball’s dimensions and check the door system’s mounting slot size to confirm compatibility with the 40*15*18mm door ball. Consult Nanjing Zhuye Elevatorparts’ technical team if unsure about matching. Preparation steps: Cut off the elevator’s main power supply and secondary power supply, and lock the power switch; place a “Maintenance in Progress” warning sign at the elevator entrance; fix the elevator car at a flat floor; open the door operator cover or landing door panel to expose the door ball mounting position; remove the old door ball (use pliers if it is press-fitted or unscrew the fixing bolt if it is bolted); clean the mounting slot and surrounding area to remove dust, oil stains, and debris; prepare professional tools such as pliers, screwdrivers, and a caliper.
FastenPositionDetection2. Correct Installation & Protection Verification
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Door Ball Installation: Take the 40*15*18mm Elevator Door & Shaft Door Ball from Nanjing Zhuye Elevatorparts. For press-fitted models, align the door ball’s metal insert with the mounting hole and press it firmly into place (ensure it is fully seated without looseness); for bolted models, pass the fixing bolt through the door ball’s through hole and tighten it to the mounting base (torque: 2–3N·m). Ensure the door ball’s contact surface faces the direction of the door’s movement.
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Position Adjustment: Manually open and close the car door and landing door to check the door ball’s position—adjust if necessary to ensure the door ball contacts the door edge smoothly during movement, with no deviation or jamming. The gap between the door ball and the door contact surface should be 0.5–1mm (follow Nanjing Zhuye’s specifications) to ensure effective buffering without affecting door movement speed.
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Function Verification: After installation, check that the door ball rotates flexibly (if it is a rolling type) or has good elasticity (if it is a fixed type). Ensure there is no abnormal friction or noise between the door ball and the door during movement.
3. Post-Installation Testing & Daily Maintenance
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Comprehensive Function Testing: Restore the elevator’s power supply and switch to inspection mode. Operate the door to open and close repeatedly (≥ 50 times) to test the door ball’s performance: Confirm the door opens/closes smoothly with no jamming, the buffering effect is obvious (reducing impact noise by ≥ 30%), and the door aligns correctly when closed. Test the door’s emergency opening function to ensure the door ball does not interfere with emergency operation.
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Daily Inspection: Maintenance personnel should check the 40*15*18 door balls during daily shaft patrols: Observe the door ball for wear, cracks, or falling off; check the mounting position for looseness or deviation; clean the door ball surface with a dry cloth to remove dust and debris (avoid using corrosive cleaning agents). Pay special attention to door balls at high-traffic floors.
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Regular Maintenance: Every 3 months, recheck the door ball’s elasticity and wear degree—measure the diameter with a caliper (replace if wear exceeds 2mm). Every 6 months, apply a small amount of special lubricant to the rolling shaft of the door ball (use lubricant recommended by Nanjing Zhuye Elevatorparts to avoid damaging the PU/nylon material). For elevators in high-dust or high-humidity environments, shorten the maintenance interval to 1 month.
Recommended Replacement Cycle for Elevator Door & Shaft Door Ball (40*15*18)
As a core buffering and guiding component enduring long-term friction, impact, environmental erosion (humidity, dust, temperature changes), and material aging, the Elevator Door & Shaft Door Ball (40*15*18) has a specified service life. Timely replacement is crucial to avoiding faults such as excessive wear, loss of elasticity, or falling off—issues that may lead to increased door operation noise, jamming, or direct collision between metal components, damaging the door system and affecting elevator operation efficiency.
1. Standard Replacement Cycle
Under normal operating conditions (elevator daily operation time 12–24 hours, daily door opening/closing times ≥ 1000, operating environment temperature -30℃ to 80℃, humidity 10%–95%), the recommended replacement cycle for the Elevator Door & Shaft Door Ball (40*15*18) is 1–1.5 years. This cycle is determined based on Nanjing Zhuye Elevatorparts’ long-term field operation data, material wear tests, and global user feedback. The cycle fully considers the high-frequency impact and friction of the door ball during daily operation.
2. Adjustments for Special Scenarios
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High-Traffic & Harsh Environments: For elevators in high-traffic areas (e.g., large shopping malls, airports with daily door opening/closing times ≥ 2000) or harsh environments (e.g., coastal areas with high salt spray, industrial sites with strong dust), the replacement cycle is shortened to 6–8 months. High-frequency impact accelerates material wear, while harsh environments cause rapid aging and corrosion of the door ball.
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Low-Frequency Use & Stable Environments: For elevators with low usage frequency (e.g., villa elevators, small office buildings with daily operation time < 8 hours) and stable shaft environments (constant temperature and humidity, little dust), the replacement cycle can be extended to 1.5–2 years—only after Nanjing Zhuye Elevatorparts’ technicians inspect and confirm that the door ball’s elasticity, wear degree, and mounting stability meet factory standards.
3. Immediate Replacement Conditions
Replace the Elevator Door & Shaft Door Ball (40*15*18) immediately if any of the following issues occur, regardless of its service life:
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The door ball is severely worn (diameter reduced by more than 2mm), cracked, or peeled off—losing buffering and guiding functions.
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The door ball falls off or the mounting is loose, leading to abnormal collision between the car door and landing door during operation.
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The door ball loses elasticity (pressing and releasing does not return to its original shape), resulting in increased door operation noise or impact.
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The door ball’s surface is severely corroded or contaminated by corrosive substances, affecting its performance and potentially damaging the door system.
In conclusion, the Elevator Door & Shaft Door Ball (40*15*18) from Nanjing Zhuye Elevatorparts is a high-quality, precision-matched buffering and guiding component tailored for modern elevator door systems. By following the correct selection, installation, maintenance, and replacement guidelines, elevator maintenance teams can effectively ensure the smooth and quiet operation of the elevator door system, extend the service life of door components, and eliminate potential safety hazards caused by door ball failure. Choosing Nanjing Zhuye Elevatorparts means you get 100% authentic 40*15*18 door balls, plus professional support—including model matching, on-site installation guidance, and prompt after-sales service. Trust Nanjing Zhuye Elevatorparts for the smooth operation of your elevator door system.
