Sill Bearing
Sill Bearing
Engineered for excellence, trusted by global industries.
The 6004 bearing, with its standard dimensions of 20x42x12mm, is a cornerstone of global mechanical engineering. As one of the most versatile deep groove ball bearings, it is utilized in everything from high-speed electric motors to sophisticated robotic limbs. In today's industrial landscape, the demand for the 6004 series is skyrocketing, driven by the global transition toward automation and electric mobility.
The 6004 series is the "universal worker" of the bearing world, essential for radial and axial load management in mid-sized machinery.
Industry 4.0 is integrating sensors into 6004 bearings for real-time vibration and temperature monitoring, reducing downtime.
Modern 6004 bearings focus on low friction coefficients to improve energy efficiency in green energy applications.
As a leading China 6004 bearing factory, we observe three major shifts:
1. Material Innovation: Transitioning from standard chrome steel (GCr15) to ceramic hybrids for better insulation and speed.
2. Miniaturization with Power: Demanding higher load capacities within the compact 6004 frame.
3. Localized Supply Chains: Global enterprises are seeking reliable Chinese partners who offer both quality and logical cost structures to mitigate geopolitical risks.
The procurement landscape for 6004 bearings has evolved. Modern buyers are no longer just looking for a "part number"; they are looking for a strategic manufacturing partner. Whether you are an OEM in Germany or a distributor in the United States, your requirements for precision, vibration levels (Z1, Z2, Z3, Z4), and noise levels (V1, V2, V3, V4) are paramount.
The versatility of the 6004 bearing allows it to thrive in various environments:
The "Made in China" label for bearings has transformed. China now hosts some of the most advanced automated grinding and assembly lines in the world. As a dedicated factory, we leverage economies of scale and a fully integrated supply chain—from raw steel forging to final precision testing—ensuring that our clients receive Tier-1 quality at competitive wholesale pricing.
SILL BEARING FACTORY is strategically positioned to serve the global market. Located in the beautiful and affluent Hangzhou Bay New Zone, our facility is at the heart of China's industrial engine.
We are adjacent to the two largest ports in China: Shanghai Port and Ningbo Port. This ensures rapid transit and lower shipping costs for our international partners.
Our production follows strict ISO standards. Every 6004 bearing undergoes rigorous testing for roundness, hardness, and noise levels before leaving the factory.
Only 90 minutes from Hangzhou Xiaoshan Airport and Ningbo Lishe Airport, making international factory audits and visits effortless.
Our factory is not just about manufacturing; it's about engineering solutions. We provide OEM/ODM services for 6004 bearings, including custom clearances (C3, C4), specialized grease options (high temp, food-grade), and private labeling for global brands. Our location near the Hangzhou-Ningbo Expressway and 329 State Line ensures that our internal logistics are as efficient as our production lines.
For procurement managers, the technical details are crucial. Our 6004 bearings feature:
• Bore Diameter: 20mm
• Outer Diameter: 42mm
• Width: 12mm
• Dynamic Load Rating: 9.38 kN
• Static Load Rating: 5.02 kN
• Limiting Speed: Up to 18,000 RPM (Oil lubrication)
High-precision bearings for every industrial challenge.
