In modern high-rise buildings, the elevator traction machine is the "absolute core" that ensures smooth vertical transportation and passenger safety. As people's requirements for living quality and elevator riding experience continue to rise, traction machines must maintain ultimate operational smoothness and ultra-silent performance during long-term continuous operation. However, traditional traction machine bearings are highly susceptible to generating piercing mechanical noise due to internal friction and cage collisions during high-speed operation, severely destroying the quiet environment of residential and high-end commercial buildings. Meanwhile, ordinary bearing steel is prone to precision degradation and shaking under long-term alternating stress, directly reducing riding comfort. Elevator OEMs urgently need support bearings customized for vertical transportation, featuring ultimate high precision, ultra-silence, and long-life characteristics.

Facing the stringent standards of "zero noise interference" and "ultimate smooth experience" in high-end buildings, support systems must not only possess excellent load-bearing capabilities but also maintain absolute dimensional stability and low noise over a decade-long maintenance-free cycle. Due to poor internal clearance control, traditional bearings easily generate sliding friction of rolling elements during heavy-load start-stop. Furthermore, ordinary greases easily age and deteriorate after long-term operation, leading to abnormal temperature rise and noise surge. The market urgently demands an elevator traction machine bearing solution that can break through the dual bottlenecks of noise interference and precision degradation, achieving full life-cycle high-reliability operation and providing solid protection for urban vertical transportation.

NMT Elevator Traction Machine Bearings are born to conquer the ultimate silence and high-precision challenges of vertical transportation. This series achieves disruptive breakthroughs in materials science and tribology design. The core rings and rolling elements comprehensively use double-vacuum smelted high-purity high-carbon chromium bearing steel, fundamentally improving material density and uniformity. For ultra-silence and high precision, NMT innovatively introduces a "lightweight engineering plastic cage + evenly spaced rolling element arrangement" design, combined with nanometer-level polishing, significantly reducing friction impact and noise sources. Meanwhile, precise matched preload technology is adopted, achieving zero-clearance preload through high-precision spacer selection, greatly enhancing bearing rigidity and ensuring absolutely smooth rotation of the traction machine main shaft.

In precision manufacturing and quality control, NMT enforces stringent standards for every component of its elevator bearings. Through high-purity materials, lightweight cage design, and full-process quality control, the ultra-silent and high-precision performance of the bearings is comprehensively improved. NMT ensures that each bearing maintains ultimate silence below 18 decibels and zero shaking under extreme traction machine conditions, avoiding the decline of riding experience, guaranteeing high consistency and high reliability of batch products, and completely eliminating noise and safety hazards of elevator operation.

With rich specifications, these bearings are widely used in gearless permanent magnet synchronous traction machines, geared traction machines, high-speed passenger elevators, villa elevators, and escalator drive systems, satisfying the supporting needs of various ultra-silent, high-precision, long-life, and maintenance-free transmission nodes.

Core Product Advantages

Core rings and rolling elements use double-vacuum smelted high-purity high-carbon chromium bearing steel, improving material density and uniformity, fundamentally ensuring dimensional stability and high precision during long-term operation;

Innovative "lightweight engineering plastic cage + evenly spaced rolling element arrangement" design significantly reduces friction impact between the cage and rolling elements, physically cutting off noise sources;

Nanometer-level polishing process for rolling elements and raceways significantly reduces noise caused by surface friction, lowering bearing operating noise to below 18 decibels, far exceeding the industry average;

Precise matched preload technology achieves zero-clearance preload through high-precision spacer selection, greatly enhancing bearing rigidity and ensuring smooth traction machine main shaft rotation with no shaking during riding;

Special low-noise synthetic grease possesses excellent lubrication and noise reduction effects, with outstanding anti-oxidation and anti-aging performance, producing no odor during long-term operation and ensuring a healthy riding environment;

Ultimate precision end-face grinding process ensures raceway parallelism, avoiding abnormal noise caused by additional loads after assembly, guaranteeing assembly consistency and reliability;

Full life-cycle long-life design significantly reduces downtime maintenance frequency for elevator traction machines, ensuring efficient, safe, and continuous operation of vertical transportation in high-rise buildings;

Full-process high-precision quality control and 100% silence and clearance full inspection ensure precise dimensions, zero noise exceedance, and zero shaking risk for each bearing in traction machines.

Typical Application Scenarios

Gearless permanent magnet synchronous traction machines and geared traction machines; High-speed passenger elevators and high-end villa elevators; Escalator and moving walk drive systems; Precision lifting platforms and heavy-duty freight elevators.

Precision Quality Assurance

NMT Elevator Traction Machine Bearings use high-purity high-carbon chromium bearing steel as core raw materials, subject to strict material purity and internal defect inspections upon incoming. After precision turning, rings undergo ultra-precision machining and nanometer-level polishing, with strict control over raceway surface roughness and end-face parallelism. Precision rolling elements are fully automatically sorted for size, roundness, and weight to ensure consistent load distribution within the same bearing set. All components undergo precision matching and assembly in high-grade cleanrooms, with precise preload application and injection of special low-noise grease. Finished products undergo 100% rotational precision, clearance testing, and silence full inspection. Unqualified products are completely rejected, ensuring the ultimate performance of batch products under elevator traction machine conditions, providing reliable support solutions for urban vertical transportation.

Product Series

Traction machine dedicated high-precision deep groove ball bearings, traction machine dedicated low-noise cylindrical roller bearings, escalator dedicated silent bearings; Selection is based on load capacity, silence standards, clearance requirements, and service life.

Brand Strength

NMT is deeply engaged in the R&D and manufacturing of elevator traction machine bearings. Targeting industry pain points in vertical transportation scenarios—where traditional bearings easily generate mechanical noise during high-speed operation disturbing residents, internal clearance changes cause riding shaking, and ordinary grease aging triggers abnormal temperature rise—NMT continuously optimizes double-vacuum smelted high-purity steel materials, lightweight engineering plastic cage structures, and precise matched preload technologies. This effectively solves fatal defects of traditional bearings in elevator traction machines such as high noise, easy shaking, and short life. It significantly enhances elevator riding comfort and operational safety, helping high-end elevator manufacturing enterprises break through precision transmission bottlenecks and seize the global high-end vertical transportation equipment market.