Micro Needle Rollers for Bearings have a material hardness of HRC 60-64, a surface roughness Ra no greater than 0.2, and dimensions ranging from Dw: 3-30, and Lw: 5-50. Micro Needle Rollers for Bearings are slender, cylindrical, and simple in structure. They are typically made of high-hardness, high-wear-resistant, high-quality steel, such as specific types of chrome steel or bearing steel. They are processed by special processes to make the surface extremely smooth and the cylindricality precisely controlled within a very small tolerance range. The diameter is generally in a very fine range, commonly 1mm - 3mm, and the length is 3 - 8 times the diameter. This unique slender ratio gives it a high load-bearing advantage in a limited space.
Technological Breakthroughs
Nano-level surface treatment
Ion sputtering technology is used to form a 0.2μm ultra-hard titanium nitride coating on the surface, reducing the friction coefficient to 0.08, suitable for million-rpm micro-turbines
Material science innovation
Optional aerospace-grade 440C stainless steel (HRC 62) or ceramic hybrid materials, corrosion resistance increased by 300%, meeting the medical standards for in vivo implantation
Intelligent detection system
Each batch of products is screened for 0.1μm defects through AI visual inspection + 3D laser scanning, with a yield rate of 99.99%
Core Advantages
1. Ultra-high precision, specially designed for precision micro bearings, ensuring high-speed, smooth and low-noise operation;
2. Extremely strong wear resistance, using GCr15 bearing steel + vacuum heat treatment, life is increased by more than 50%;
3. Miniaturized design, solving the problem of bearing in narrow spaces such as precision instruments and micro motors;
4. Low friction coefficient, ultra-fine grinding of the surface to Ra0.1μm, reducing energy consumption and temperature rise;
5. Multi-functional adaptation, supporting special treatments such as silver plating/nickel plating, meeting the requirements of harsh environments such as medical and aviation;
6. Dynamic balance optimization, through 100% rotation test, eliminating micron-level vibration.
Our Services
1.Customized development: Provide technical support for the whole process of non-standard bearing design, material selection and process optimization.
2.Quick response: Provide solutions within 48 hours, and deliver urgent orders within 72 hours.
3.Full-cycle testing: Provide free dimensional inspection reports, material analysis and life simulation data.
4.On-site support: The engineer team provides value-added services such as installation guidance and fault diagnosis.
5.Global supply: Self-built bonded warehouse, support various trade terms such as EXW/FOB/DDP.
6.After-sales guarantee: 18-month long warranty period, establish customer-exclusive quality files.
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