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Henan San Kuang Machinery Technology Co., Ltd. is proud to present our 42CrMo4 Material Single Row Ball Slewing Bearing with External Gear, Diameter 500mm. As a dedicated manufacturer established in 2022, we bring together advanced engineering and precision manufacturing to deliver reliable slewing bearings that meet the demanding needs of heavy industries. This particular model combines the strength of 42CrMo4 alloy steel with a robust single-row ball design and an integrated external gear, offering an excellent balance of load capacity, rotational smoothness, and compact dimensions. Whether you are building cranes, excavators, or automated turntables, this component is engineered to provide long service life and consistent performance.
Our factory, located in Luoyang, Henan – China’s renowned bearing hub – spans over 10,000 square meters and employs a skilled team of 51–100 professionals. With an annual export value between US$2.5 million and US$5 million, we serve global markets across North America, South America, Europe, Asia, Africa, and Oceania. This product exemplifies our commitment to quality, utilizing heat-treated 42CrMo4 steel for the ring and raceways, precision gear cutting for smooth mesh, and comprehensive sealing to protect against contaminants.
Key Features & Technical Specifications
- Premium Material: 42CrMo4 alloy steel – high strength, excellent toughness, and good wear resistance after quenching and tempering.
- Single Row Ball Design: Offers low friction, high rotational speed capability, and cost-effectiveness for moderate axial/radial loads.
- External Gear Integrated: Cut directly on the outer ring using CNC hobbing; module and tooth count customizable per your drive requirements.
- Diameter 500mm: Compact size suitable for medium-duty applications; precise outer/inner diameter tolerances for easy mounting.
- Induction Hardened Raceway: Raceway hardness reaches HRC 55-60, extending fatigue life and reducing indentation from rolling elements.
- Dual Lip Seals & Grease Nipple: Standard sealing system prevents dust and moisture ingress; re-lubrication possible for extended maintenance intervals.
- Precision Grade: Manufactured to GB/T 19795-2005 standard (equivalent to ISO 5400-1), with optional higher precision classes available.
| Parameter | Value |
|---|---|
| Outer Diameter (OD) | Customizable based on gear module |
| Inner Diameter (ID) | Typically 400mm (varies with design) |
| Ball Diameter | 16–25 mm (depending on load class) |
| Number of Balls | 25–40 (single row) |
| Axial Load Capacity (Basic) | Approx. 120 kN (static) – please confirm with our team for your specific application |
| Radial Load Capacity (Basic) | Approx. 60 kN (static) |
| Tilting Moment Capacity | Approx. 18 kN·m (static) – varies with configuration |
| Gear Module (External) | 4–8 (customizable) |
| Mounting Holes | 10-15 bolt holes on inner/outer ring – drilled according to customer drawing |
Key Advantages for Your Application
- Superior Material Strength: 42CrMo4 steel provides higher tensile strength (900-1100 MPa) and impact resistance compared to standard 50Mn or 40Cr materials, ensuring longer fatigue life under heavy cyclic loads.
- Low Maintenance: The single-row ball design reduces friction and heat generation; combined with relubrication capability, it minimizes downtime.
- Customizable Gear: We can produce external gears with different modules, tooth numbers, and hardness profiles to match your pinion and drive system perfectly.
- Compact Footprint: The 500mm diameter makes it easy to integrate into space-constrained assemblies without compromising load capacity.
- Proven Manufacturing Process: All rings are forged, normalized, rough machined, heat treated, and precision ground to achieve consistent quality.
At Henan San Kuang Machinery, we understand that every project has unique requirements. That is why we offer flexible customization – from gear parameters to mounting hole patterns and sealing options. Our engineering team will work with you to ensure the final product fits your equipment perfectly.
Trust & Reliability – Why Work with Us?
Since our establishment in 2022, we have rapidly grown to serve customers in over 20 countries across 5 continents. Our factory covers 10,000–30,000 square meters and is equipped with modern CNC lathes, gear hobbing machines, heat treatment lines, and inspection instruments. With 51–100 skilled employees, we maintain strict quality control from incoming raw material to final shipment. Our annual export value of US$2.5–5 million reflects the trust that global clients place in our products.
We ship from major Chinese ports including Shanghai, Lianyungang, Qingdao, and Tianjin, ensuring efficient logistics to any destination. Our main markets span North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, East Asia, Western Europe, Central America, Northern Europe, Southern Europe, South Asia, and the domestic market. We invite you to contact us for a quotation, technical drawing, or sample testing. Let us demonstrate how our 42CrMo4 slewing bearing can add value to your machinery.
Ready to order or need a custom solution? Send us an inquiry with your required gear module, load specifications, and mounting details. Our sales team will respond within 24 hours with a comprehensive proposal.
Frequently Asked Questions (FAQ)
-
Q: What is the difference between single-row and double-row ball slewing bearings?
A: Single-row ball bearings can handle moderate axial and radial loads with lower friction and cost. Double-row designs are used for higher load capacities and larger tilting moments. For diameter 500mm applications with moderate loads, single-row is often optimal. -
Q: Can you supply the bearing without the external gear?
A: Yes, we can provide the same base slewing ring without a gear (plain outer diameter) or with an internal gear, depending on your design. Please specify your requirements. -
Q: What is the typical lead time for a 500mm external gear slewing bearing?
A: For standard specifications without special customization, lead time is approximately 25–35 working days from order confirmation. Customized gears or special heat treatments may require 35–50 days. -
Q: Do you provide mounting hardware like bolts and washers?
A: Yes, we offer optional mounting bolt kits with high-strength grade 10.9 or 12.9 bolts. Please indicate if you need hardware included. -
Q: What lubrication is recommended?
A: We recommend a lithium-based extreme pressure grease with NLGI grade 2. The bearing is initially greased at our factory; re-lubrication intervals depend on operating conditions (typically every 2000 hours or as needed). -
Q: Is the bearing interchangeable with other brands?
A: The dimensional envelope (outer/inner diameter, hole patterns) can be designed to match common standards such as SKF, Kaydon, or Rothe Erde equivalents. Send us your mounting drawing for verification. -
Q: What quality certificates do you have?
A: We manufacture according to Chinese national standard GB/T 19795-2005. Specific third-party certifications are available upon request; we can also arrange inspection by SGS, BV, or other agencies at buyer’s cost. -
Q: How is the gear hardness treated?
A: The gear teeth are induction hardened after cutting to a hardness of HRC 48-55. If full tooth hardening or case hardening is required, we can customize the heat treatment process.
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