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Henan San Kuang Machinery Technology Co., Ltd. is a professional manufacturer based in Luoyang, Henan, China, specializing in high-performance slewing bearings. Our 50Mn Quenched and Tempered Slewing Bearing Large Diameter Turntable Bearing represents the pinnacle of durability and precision for heavy-duty rotating applications. With a production facility spanning 10,000–30,000 m² and a dedicated team of 51–100 skilled workers, we ensure every bearing meets rigorous quality standards. This product is designed to deliver exceptional load capacity, long service life, and reliable operation under demanding conditions.
Our slewing bearings are widely used in excavators, cranes, wind turbines, radar systems, and industrial turntables. By combining premium 50Mn steel with a precisely controlled quench and temper process, we achieve optimal hardness and toughness, making this bearing ideal for large-diameter applications where reliability is critical.
Product Features & Technical Specifications
- Material Excellence: 50Mn alloy steel ensures excellent wear resistance and fatigue strength.
- Heat Treatment: Quenched and tempered to achieve a uniform hardness of HRC 45–55, balancing strength and toughness.
- Large Diameter Range: Outer diameter customizable from 500 mm to 5000 mm to fit various equipment.
- Gear Options: Available with internal or external gear teeth (or without), cut to customer specifications (module 2–30).
- Sealing Solutions: Options include rubber lip seals, metal labyrinths, or special seals for harsh environments.
- High Load Capacity: Supports radial, axial, and moment loads simultaneously, with dynamic and static ratings verified by FEA.
- Precision & Tolerances: Available in precision grades P0, P6, and P5 (customizable to P4 upon request).
- Corrosion Protection: Surface treatment includes phosphating, zinc plating, or painting (according to customer requirements).
- Mounting Holes: Predrilled or customizable hole patterns for easy installation.
Technical Parameters Table
| Parameter | Value |
|---|---|
| Material | 50Mn (DIN equivalent: C50E4) |
| Hardness | HRC 45–55 (after quench & temper) |
| Outer Diameter (OD) | 500 – 5000 mm (custom) |
| Inner Diameter (ID) | 300 – 4500 mm (custom) |
| Cross-section Height | 60 – 200 mm (depends on load) |
| Gear Module | M2 – M30 (customizable) |
| Number of Gear Teeth | As per design / customer request |
| Static Load Capacity (Axial) | Up to 12,000 kN (depending on size) |
| Dynamic Load Capacity (Axial) | Up to 8,000 kN |
| Precision Grade | P0 / P6 / P5 (ISO 281, ISO 492) |
Advantages for Customers
- Extended Service Life: The quenched and tempered 50Mn steel resists wear and fatigue, reducing downtime and replacement costs.
- Customizable Design: We offer flexible dimension, gear, and seal options to match your specific equipment needs.
- Smooth Rotation: Precision machining ensures low friction and uniform load distribution, improving operational efficiency.
- Global Compatibility: Our bearings can be supplied with mounting patterns that match international standards (ISO, DIN, ANSI).
- Easy Maintenance: Optional lubrication holes and grease nipples simplify on-site maintenance.
- Competitive Pricing: As a direct manufacturer with a modern factory, we offer cost-effective solutions without compromising quality.
- Reliable Supply Chain: Multiple ports (Shanghai, Lianyungang, Qingdao, Tianjin) ensure fast and efficient worldwide shipping.
Trust & Company Strength
Henan San Kuang Machinery Technology Co., Ltd. was established in 2022, but our team brings decades of combined experience in the bearing industry. Our factory occupies 10,000–30,000 square meters and is equipped with advanced CNC machining centers, heat treatment lines, and inspection equipment. We export annually worth US$2.5–5 million to clients across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. Over 80% of our products are exported, proving our ability to meet international quality and delivery expectations.
We strictly control every stage from raw material procurement to final assembly and testing. Each bearing undergoes dimensional inspection, hardness testing, and rotational smoothness checks. Our commitment to quality and customer satisfaction has helped us build long-term partnerships with leading machinery manufacturers worldwide.
Contact us today for a quotation or technical consultation. Let our 50Mn Quenched and Tempered Slewing Bearings power your next project with reliable performance and long-lasting durability.
Frequently Asked Questions (FAQ)
A: 50Mn steel offers higher toughness and better through-hardening for large sections while maintaining good wear resistance. After quench and temper, it provides an excellent balance for large-diameter bearings that endure shock loads.
A: Yes, we offer full customization of dimensions. Our standard capability covers OD from 500 mm to 5000 mm and ID from 300 mm to 4500 mm. Non-standard sizes can be discussed.
A: Absolutely. We can supply bearings with internal gear, external gear, or without gear. Gear module, number of teeth, and tooth profiles are customizable based on your design.
A: For standard sizes, lead time is around 30–45 days. For fully customized bearings, it may range from 45–60 days, depending on complexity and quantity.
A: We use advanced quenching and tempering furnaces with precise temperature control. Hardness and microstructure are tested on every batch. Third-party inspection is also available upon request.
A: They are commonly used in excavators, tower cranes, port equipment, wind turbines, solar trackers, medical CT scanners, and any machinery requiring large-diameter rotation.
A: We ship from Port of Shanghai, Port of Lianyungang, Port of Qingdao, and Port of Tianjin, giving you flexible logistics options.
A: Yes. Our technical team provides installation guidance, troubleshooting, and spare parts recommendations. We respond to inquiries within 24 hours.
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