Sill Bearing
SILL Bearing Factory — specializing in Deep Groove Ball Bearings & Tapered Roller Bearings. Superior GCr15 bearing steel. 100% acceptance rate. Exported to 14+ countries across 5 continents.
SILL BEARING FACTORY is located in the beautiful and affluent Hangzhou Bay New Zone — strategically close to two of China's biggest ports: Shanghai Port and Ningbo Port. The factory is adjacent to the Hangzhou–Ningbo Expressway, 329 State Line, and Hangzhou–Ningbo Railway Line. Both Hangzhou Xiaoshan Airport and Ningbo Lishe Airport are reachable within just 90 minutes.
Our factories specialize in designing, researching, and producing Deep Groove Ball Bearings (⌀4mm～⌀120mm) and Tapered Roller Bearings, as well as other non-standard bearings, using superior bearing steel "GCr15". We combine advanced automatic production equipment with first-rate enterprise management, excellent engineering talent, strict craftsmanship, and solid technology.
To expand our production capacity, our new factory Anhui TOPB IMP.&EXP. Co., Ltd. is currently under construction. Upon completion, our annual production capacity will increase by $20 million.
The company adheres to the principle of "people-oriented, future-creating" and the quality policy of "survival by high quality, seeking better developments by sincerity and integrity."
Our Own Bearing Brands (OEM Available):
Adjacent to Shanghai Port, Ningbo Port, Hangzhou–Ningbo Expressway & Railway. 90 min to two international airports.
From deep groove ball bearings to tapered roller bearings, SILL manufactures precision components for demanding industrial applications worldwide.
Versatile, self-retaining bearings with a deep groove raceway that allows them to handle both moderate radial and axial loads in both directions. Suitable for high-speed applications, low friction, reduced noise and vibration, and low maintenance needs. Available in single and double-row designs with open or sealed variants.
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Separate bearings where the inner and outer rings have tapered raceways. Available in structural types including single row, double row, and four-row tapered roller bearings according to the number of rows of rollers installed. Ideal for combined radial and axial load applications.
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Mainly subjected to large one-way axial loads. The greater the contact angle, the greater the load-bearing capacity. Engineered for precision performance in high-speed and high-accuracy applications requiring combined axial and radial load support.
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The combination of radial needle bearing and thrust bearing component creates a combined needle roller bearing. Features compact structure, high rotation precision, and can withstand a certain axial load while receiving a high radial load. Ideal for space-constrained applications.
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Built on decades of precision manufacturing experience, rigorous quality control, and a commitment to global customer satisfaction.
We adopt five rigorous quality inspection procedures — from raw material initial-inspection to final ex-factory products' inspection — ensuring every bearing meets the highest standards with a 100% acceptance rate.
All bearings are manufactured using premium GCr15 bearing steel — the industry gold standard — ensuring exceptional hardness, wear resistance, and long service life under demanding operational conditions.
The SILL brand is renowned for its low noise, low vibration and friction, high accuracy, highly sealed performance, long service life, and no abnormal sound — meeting the most demanding acoustic and precision requirements.
Our factory owns advanced automatic production equipment combined with first-rate enterprise management, enabling high-volume, consistent-quality output with efficient turnaround times for domestic and international orders.
Located in Hangzhou Bay New Zone, within 90 minutes of Shanghai Port, Ningbo Port, and two international airports. Ideal logistics infrastructure ensures fast, reliable global delivery to 14+ countries and regions.
Beyond standard products, we offer full OEM services under the SILL and NETB brands. Our engineering team can design and produce non-standard bearings to meet specific customer technical requirements and application demands.
We adopt five comprehensive inspection procedures to guarantee that every bearing leaving our factory meets the highest quality standards — achieving a 100% product acceptance rate.
Strategically located in Hangzhou Bay New Zone with direct access to China's largest export ports. Our state-of-the-art manufacturing facility combines advanced automation with rigorous human craftsmanship to deliver bearings of uncompromising quality.
SILL bearings have been widely applied across diverse industries, from household appliances to heavy agricultural machinery, delivering reliable performance in every environment.
Household Appliances
Micro Motors
Electric Fans
Motorcycles
Automobiles
Medical Instruments
Sports Machinery
Textile Machinery
Agricultural Machinery
Industrial Equipment
SILL bearings are not only sold well in the domestic market but are also exported to countries and regions worldwide. Our products are well-received by domestic and overseas customers across multiple continents, building a reputation for reliability and precision.
SILL Bearing operates under internationally recognized quality management frameworks, ensuring our bearings meet the rigorous demands of global industrial applications and export compliance.
Our bearings are well-received by domestic and overseas customers. Here is what industry professionals say about SILL Bearing quality and service.
We have been sourcing Deep Groove Ball Bearings from SILL for over 5 years. The consistency of quality is remarkable — every batch meets our strict tolerance requirements for our electric motor production line. Their GCr15 steel quality is genuinely superior.
SILL's tapered roller bearings have been performing excellently in our agricultural machinery applications. Low noise, long service life, and the 5-stage quality inspection process gives us full confidence. Delivery from Ningbo Port is always on time.
We import SILL and NETB branded bearings for distribution across our region. The OEM flexibility and competitive pricing from a factory with this level of quality control is exceptional. Their location near Shanghai Port makes logistics straightforward and cost-effective.