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Welcome to Henan San Kuang Machinery Technology Co., Ltd. – your trusted partner in precision slewing bearings. With over a decade of manufacturing experience since 2014, our factory spanning 10,000–30,000 square meters is dedicated to producing high-quality Slewing Bearing Cross Roller Bearings specifically engineered for demanding construction equipment applications. Our cross roller design ensures superior load capacity, rigidity, and durability, directly addressing the need for reliable rotation in excavators, cranes, and aerial platforms. Backed by a skilled team of 51–100 employees and annual exports of US$2.5–5 million to global markets, we combine advanced technology with rigorous quality control to deliver bearings that meet international standards.
Our cross roller slewing bearing is a specialized ring bearing that uses cylindrical rollers arranged in a cross pattern between two raceways. This unique configuration allows the bearing to handle combined loads – axial, radial, and moment – with minimal friction and exceptional accuracy. Whether you need a standard size or a fully customized solution, our engineering team works closely with clients to ensure the perfect fit for your construction machinery. Below we detail the key features, technical specifications, and the tangible benefits you can expect.
Key Features & Technical Specifications
- Cross Roller Arrangement: Cylindrical rollers are placed at 90° angles, alternating directions. This eliminates the need for spacers or retainers, maximizing roller count and load capacity.
- High Load Capacity: Simultaneously supports axial loads, radial loads, and tilting moment loads – ideal for heavy-duty construction equipment.
- Compact Design: Requires minimal mounting space while providing high stiffness and low torque.
- Integrated Gear Options: Internal or external gear teeth can be machined directly into the ring for direct drive applications – available upon request.
- Sealing System: Double-lip or labyrinth seals protect against dust, dirt, and moisture, extending bearing life in harsh job sites.
- Material Quality: Forged or cast rings made from alloy steel (50CrMo4, 42CrMo4) with induction-hardened raceways for wear resistance.
- Precision Grades: Available in standard (P0) and higher precision (P5, P6) per ISO 281 – customizable to your equipment’s requirements.
- Corrosion Protection: Phosphating, zinc plating, or anti-corrosion paint finish – optional according to environment.
| Parameter | Standard Range | Custom Range |
|---|---|---|
| Bore Diameter (d) | 200–1500 mm | 1500–3000 mm |
| Outer Diameter (D) | 300–2000 mm | 2000–3500 mm |
| Overall Height (H) | 50–200 mm | 200–300 mm |
| Radial Load Capacity (Cr) | Up to 500 kN | Up to 2000 kN |
| Tilting Moment Capacity (M) | Up to 50 kNm | Up to 200 kNm |
| Weight | 30–500 kg | 500–2000 kg |
Benefits for Your Construction Equipment
- Extended Equipment Life: The cross roller design minimizes wear and reduces need for frequent replacements, lowering total cost of ownership.
- Enhanced Operational Stability: High rigidity ensures smooth rotation even under heavy loads, improving the precision of excavator swings or crane lifts.
- Reduced Downtime: Robust seals and hardened raceways protect against contaminants, making the bearing ideal for muddy, dusty construction sites.
- Flexible Integration: Options for gear teeth, mounting holes, and special tolerances allow seamless integration into your existing machinery design.
- Global Compatibility: Designed to meet international dimensional standards and can be supplied with mounting instructions and installation support.
Our manufacturing facility in Luoyang, Henan, China, is equipped with advanced CNC machining and grinding equipment. Every bearing undergoes 100% dimensional inspection and magnetic particle testing to ensure defect-free raceways and rolling elements. We hold multiple certifications including ISO9001, ISO14000, OHSAS18001, SA8000, and HACCP, demonstrating our commitment to quality, environment, and social responsibility.
We have successfully supplied cross roller slewing bearings to construction equipment OEMs and aftermarket distributors across North America, South America, Europe, Southeast Asia, Africa, and Oceania. Our annual export value of US$2.5–5 million reflects the trust global clients place in our products. With quick shipment from Shanghai, Qingdao, Tianjin, or Lianyungang ports, and a responsive technical team, we are ready to support your project from prototype to mass production.
Choose Henan San Kuang for heavy-duty slewing bearings that deliver performance, reliability, and value. Contact us today for a quotation, technical drawing review, or sample request. Let us engineer the bearing that keeps your construction equipment rotating efficiently.
Frequently Asked Questions
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What is the difference between a slewing bearing and a cross roller bearing?
A cross roller bearing is a specific type of slewing bearing where cylindrical rollers are arranged in a crossed pattern (90° alternately) between inner and outer rings. This design provides higher load capacity and rigidity compared to standard ball slewing bearings, making it ideal for construction equipment that experiences heavy combined loads. -
Can these bearings be used in excavator swing circles?
Yes, absolutely. Cross roller slewing bearings are commonly used in excavator swing mechanisms, as well as in crane turntables, aerial work platforms, and concrete pump trucks. Their compact design and high moment capacity are well-suited for these applications. -
What is the typical lead time for a custom-sized bearing?
Standard sizes can be shipped within 15–20 working days. Custom bearings (special bore/outer diameter, gear teeth, or hole patterns) typically require 30–45 working days after design approval. We offer expedited service for urgent orders – please inquire with our sales team. -
Do you provide mounting or maintenance instructions?
Yes, we provide detailed installation and maintenance guidelines along with each bearing. Our technical support is available via email or phone to assist with proper mounting techniques, bolt torques, and lubrication recommendations. -
What materials are used for the bearing rings and rollers?
The rings are typically forged or cast from alloy steels such as 50CrMo4 or 42CrMo4, with induction-hardened raceways. Rollers are made from bearing-grade steel (GCr15) or through-hardened alloy steel. Contact us for material certifications. -
Are these bearings suitable for outdoor construction environments?
Yes. We offer several sealing options (double-lip nitrile rubber, labyrinth, or V-ring) to protect against dust, water, and mud. Additionally, anti-corrosion surface treatments like phosphating or zinc plating can be applied for extra protection. -
Do you export to markets outside China?
Definitely. We export to North America, South America, Europe, Southeast Asia, Africa, Oceania, and more. Our shipping ports include Shanghai, Qingdao, Tianjin, and Lianyungang. We can arrange FOB, CIF, or DDP terms based on your preference. -
How can I get a price quotation?
Please send us your requirements: bore diameter, outer diameter, height, gear specification (if any), load conditions, and quantity. You can contact us via email or use the inquiry form on our website. We typically respond within 24 hours.
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