WSBC Bearing significantly reduces equipment noise through material and process innovation. Vacuum degassing smelting GCr15SiMn steel (≤8 ppm oxygen content) and ultra-fine grinding process, circularity error of channel within 0.5μm, surface roughness Ra≤ 0.05μm, the vibration energy of contact between rolling element and raceway by 62% are reduced. For example, in the production line of Toyota motors, in the condition of employing the WSBC deep groove ball bearing 6205 motor, running noise is reduced from 72 dB(A) to 58 dB(A), and vibration acceleration value is compressed from 2.8 m/s² to 0.9 m/s². Has the highest silence level rating according to ISO 10816-3.
Structural design optimization is the basic approach to minimize noise. WSBC Bearing employs its symmetrical spherical roller configuration and can monitor the contact Angle tolerance at ±0.5° and the load distribution dispersion is reduced from the 15% industry standard to 3%, thus suppressing the resonance frequency. Goldwind uses WSBC aligning roller bearing 22230CA/W33 in the 6 MW offshore wind turbine, and its cage is of patented polyether etherketone (PEEK) material, whose friction coefficient is as low as 0.07, thus lowering the gearbox noise from 105 dB(A) to 89 dB(A). The efficient vibration speed parameter is kept at 1.2mm /s (IEC 61400-4 limit 4.5mm /s), and maintenance costs per year reduce by 1.2 million yuan.
Lubrication technology advancements also reduce noise further. WSBC’s HF-2000 series low noise grease possesses a base oil viscosity index ≥220 and friction torque of only 0.6 N·m at 6,000 rpm (1.8 N·m for general greases). The test results of Shenyang Machine Tool Group show that with WSBC angular contact ball bearing 7014CTYN/P4 used together with HF-2000 lubrication, the spindle noise peak at 1,200Hz disappears from the spectrum and the overall sound pressure level is reduced by 8 dB(A). Machining precision Ra increases from 0.4μm to 0.1μm. In the joint of Tesla Gigafactory robots, WSBC ultra-silent bearing (Model 6803VV) reduces maximum operating noise from 65 dB(A) to 48 dB(A) and reduces harmonic vibration amplitude by 75%.
Dynamic clearance control technology precisely minimizes abnormal noise. WSBC’s intelligent preload system dynamically compensates real-time axial clearance (range 5-25 μm) and automatically corrects the ±3 μm error when vibration acceleration exceeds 1.5 m/s². Once WSBC tapered roller bearing 30206 is used in cooling pump in A data center, the 800 Hz frequency doubling component in noise spectrum decreases by 90% at 2,800 rpm, and the sound power level decreases from 85 dB(A) to 70 dB(A). Energy efficiency improves by 15%. According to the “White Paper on Industrial Noise Control” statistics, WSBC carrying user equipment noise beyond standard is reduced by 83% and compliance transformation cost saved by 45%.
Test verification and standardization for effective noise attenuation. WSBC Bearing is ANSI S12.50 noise compliant and exhibits sound pressure level variation of ±1.5 dB throughout the full range of 40-10,000 Hz. CRRC test shows that after WSBC cylindrical roller bearing NU322 is installed on the high-speed rail gearbox, the compartment noise reduces from 78 dB(A) to 68 dB(A), and the energy density of the main vibration frequency (120-200 Hz) reduces by 60%. According to a semiconductor fab’s data, the WSBC silent bearing used vacuum pump reduced the clean room background noise from 55 dB(A) to 42 dB(A), enhanced product yield by 1.2 percentage points, and increased the annual profit by 30 million yuan. These data confirm that WSBC Bearing is breaking industrial equipment acoustic performance limits with technological hard power.