Sill Bearing
Sill Bearing
The 6803RS ball bearing (widely designated as 6803-2RS or 61803-2RS) is a foundational element in thin-section metric rolling bearing technology. Characterized by its ultra-thin dimensional profile of 17mm Bore (d) x 26mm Outer Diameter (D) x 5mm Width (B), this bearing is engineered to deliver high radial efficiency in configurations where spatial real estate is highly constrained.
Our premium 6803RS bearings are fabricated using vacuum-degassed GCr15 high-carbon chromium bearing steel, hardened to a precise range of HRC 60–65. The "2RS" designation denotes twin dual-lip nitrile butadiene rubber (NBR) contact seals. These seals are specifically designed to retain our advanced internal lubricants while preventing ingress of dust, grit, moisture, and particulate matter. This seal configuration significantly extends the service life in demanding environments.
To satisfy strict requirements for low vibration and high accuracy, we control the inner and outer ring raceway geometry using high-speed, automated micro-grinding processes. The internal clearance is kept consistent within the standard CN or extra-clearance C3 ranges, depending on the application's operating temperature and shaft-interference variables.
As mechanical and electronic products trend toward smaller, lighter designs, global procurement for thin-section bearings like the 6803RS continues to rise.
The rise of electric bicycles, micro-mobility, and robotic joints demands thin-section ball bearings that minimize rotational friction and rotational weight.
Modern designs require bearings with tighter tolerances. Our 6803RS bearings are built to ABEC-3 (P6) and ABEC-5 (P5) standards, providing high running accuracy.
Sourcing managers look for suppliers offering end-to-end traceibility, stable raw materials, reliable customs clearance, and predictable shipping lead times.
SILL BEARING FACTORY is located in Hangzhou Bay New Zone, close to Shanghai Port and Ningbo Port. We operate near major expressways, state lines, and railways, allowing us to ship products globally with efficient domestic transit.
We maintain consistent quality through a structured five-step inspection protocol:
To expand production capacity, our new facility Anhui TOPB IMP.&EXP. Co., Ltd. is under construction, which will increase our annual capacity by $20 million.
Our products are exported to global markets including the U.S., Brazil, Switzerland, UAE, Iran, Turkey, Pakistan, Malaysia, Bangladesh, Egypt, Nigeria, Hong Kong, and Taiwan.
Our manufacturing facilities produce a range of bearing designs engineered for specific industrial tasks.
Versatile, self-retaining bearings with deep groove raceways. Handles both moderate radial and axial loads in both directions. Features low friction, reduced noise and vibration, and low maintenance needs. Suitable for high-speed applications, available in single and double-row designs.
Separate bearings with tapered raceways in the inner and outer rings. Divided into structural configurations such as single row, double row, and four row tapered roller bearings based on the installation of the rollers.
Designed to support large one-way axial loads. The load carrying capacity increases as the contact angle increases, providing stability in high-speed spindle drives.
Combining a radial needle bearing with a thrust bearing component creates a compact needle roller bearing. It provides high rotation precision, radial load capacity, and supports axial forces in confined spaces.
The low weight and compact profile of the 6803RS deep groove ball bearing make it suitable for several key applications:
Used in small domestic appliances, electric fans, and micro-motors where low vibration, low friction, and quiet operation are critical.
Employed in motorcycles, specialized automotive water pumps, and electric vehicles where compact components are required to reduce vehicle weight.
Used in medical centrifuges, diagnostic equipment, and surgical tools that require low torque and smooth rotation.
Fitted in bicycle hubs, fitness machines, and outdoor power equipment to provide durability under dust and moisture exposure.
We manufacture and distribute our own bearing brands: SILL & NETB, and offer comprehensive OEM and customization services for specific customer requirements.
Looking for a reliable bearing factory and exporter from China?
Contact us to discuss custom clearances, custom dimensions, or scheduled volume pricing.
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Located in Hangzhou Bay New Zone, SILL BEARING FACTORY is adjacent to the Hangzhou-Ningbo Expressway, 329 State Line, and the Hangzhou-Ningbo Railway Line. This location provides access to Shanghai Port and Ningbo Port, and is a 90-minute drive to Hangzhou Xiaoshan Airport or Ningbo Lishe Airport.
Our factories design, study, and produce Deep Groove Ball Bearings (￠4mm ～ ￠120mm), Tapered Roller Bearings, and non-standard bearings using GCr15 bearing steel.
Our manufacturing processes use automated production machinery and quality control guidelines. We train our assembly workers in handling procedures to prevent component damage before delivery.
SILL bearings are selected for low noise, low vibration and friction, high accuracy, sealing performance, and long service life.
The 6803RS deep groove ball bearing features an inner diameter of 17mm, an outer diameter of 26mm, and a width of 5mm. It is designed for compact applications, utilizing two rubber seals (2RS) to protect against contamination while retaining internal lubricants.
GCr15 high-carbon chromium steel is a standard alloy for high-stress rolling elements. Heat-treated to a hardness of HRC 60–65, it provides resistance to rolling contact fatigue, wear, and structural deformation under load.
We use a five-step quality control protocol: 1. Raw material inspection, 2. Operator self-inspection, 3. Full inspection by staff, 4. Sampling by Chief Inspectors, and 5. Final ex-factory testing.
Yes, we provide OEM branding options under SILL or NETB brands, and can manufacture non-standard configurations with custom clearances (C3, C4), specialized grease options, or specific seal materials like FKM/Viton.
Our factory in Hangzhou Bay New Zone is located near Shanghai and Ningbo ports. With the construction of our new Anhui TOPB facility, we are expanding our production capacity to meet growing global demand.
