Sill Bearing
Sill Bearing
The 6904 2RS bearing (20mm x 37mm x 9mm) represents a pinnacle of miniature deep groove ball bearing engineering. As a leading manufacturer, we emphasize the specific technical nuances that elevate our 6904 series above commodity alternatives. By utilizing premium GCr15 bearing steel, our components undergo a rigorous vacuum degassed refining process, ensuring minimal impurities and optimal hardness (HRC 60-64).
The "2RS" designation—indicating double-sided rubber seals—is critical for modern industrial applications. These seals provide a contact-type barrier that prevents the ingress of dust, moisture, and particulate matter, while simultaneously retaining the high-performance synthetic grease essential for longevity. In high-speed applications like electric motors, precision power tools, and household appliances, the 6904 2RS delivers:
Our manufacturing strategy is anchored in the Hangzhou Bay New Zone, a critical node in China's industrial geography. This strategic location offers unique advantages:
The 6904 2RS is not merely a component; it is an enabling technology. Our application engineering team collaborates with clients across the globe—from the automotive assembly lines in Brazil to the medical device manufacturers in Switzerland. We adhere to international ISO standards, ensuring interchangeability and compliance for maintenance, repair, and operations (MRO) markets.
Whether it is for sports machinery, agricultural equipment, or precision textile drives, we provide the technical specifications—including clearance (C3, C4 options), lubrication profiles, and sealing variations—required to meet local compliance and operational needs. We treat every bearing like "eggs that need special care," applying a 5-step inspection procedure to ensure 100% acceptance rates.
The global bearing market is moving toward "Smart Manufacturing." At our factories, we are already integrating IoT-ready production monitoring. The future of the 6904 2RS series lies in predictive maintenance—bearings that can communicate operational status. We are investing in R&D to enhance seal material durability to withstand aggressive chemical environments and extreme thermal cycles, keeping pace with the electrification of global industrial equipment.
Experience: Decades of specialized focus on deep groove ball bearings.
Expertise: In-house engineering teams capable of handling non-standard customization.
Authority: A trusted exporter with a global footprint, serving markets from the U.S. to Bangladesh.
Trustworthiness: Transparent quality control, factory-direct pricing, and a proven track record of on-time delivery.
A: The 2RS seal provides essential protection against contaminants (dust, liquids) that would otherwise degrade the grease and lead to premature bearing failure. It is ideal for environments where maintenance access is difficult.
A: Absolutely. Our "SILL" and "NETB" brands are flexible, and we provide OEM services tailored to specific brand packaging and technical requirements.
A: Located near the Ningbo and Shanghai ports, we have optimized logistics pathways that reduce transit times and costs for both FCL (Full Container Load) and LCL shipments.
A: We employ a 5-step process: raw material initial-inspection, operators' self-inspection, inspectors' full-inspection, chief inspectors' sampling, and final ex-factory products' inspection.
Versatile, low friction, high speed.
Handles combined loads with ease.
Optimized for axial and radial loads.
Compact structure, high precision.
Located in the affluent Hangzhou Bay New Zone, we benefit from the synergy of the Shanghai and Ningbo port clusters. Our specialization spans design, R&D, and production of Deep Groove Ball Bearings (￠4mm ～￠120mm) using high-grade GCr15 steel.
With our new Anhui TOPB facility currently expanding our capacity, we are poised to scale production by $20 million annually. Our SILL and NETB brands stand for low noise, low vibration, and long-life reliability, trusted by clients across 4 continents.
"People-oriented, future-creating"—this is the Sill philosophy.
