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Henan San Kuang Machinery Technology Co., Ltd. proudly presents our Alloy Steel Slewing Ring Bearing, specifically engineered for demanding mining machinery applications. As a manufacturer established in 2022 with a 10,000–30,000 m² factory and an annual export value of US$2.5–5 million, we combine modern production capabilities with rigorous quality control. This slewing ring bearing is designed to withstand extreme loads, harsh environments, and continuous operation – the core requirements of excavators, drilling rigs, and rotary tables in mines. With customizable gear configurations and sealing options, it offers a reliable solution for rotating heavy equipment under high stress.
Key Features & Technical Specifications
- High-Strength Alloy Steel Construction: Made from premium alloy steel (50Mn, 42CrMo, or equivalent), heat-treated to achieve raceway hardness of HRC 55–60, ensuring long service life even under shock loads.
- Single or Double Row Design: Available in both single-row and double-row ball bearing configurations, selected based on load capacity and stiffness requirements.
- Customizable Gear Teeth: Internal, external, or no gear teeth – matched to your drive system specifications. Gear teeth are induction-hardened for wear resistance.
- Robust Sealing System: Equipped with double rubber seals or metal shields to prevent dust, mud, and moisture ingress – critical for open-pit and underground mining environments.
- High Load Capacity: Supports both axial, radial, and moment loads simultaneously. Dynamic and static load ratings are calculated according to ISO 281 standard.
| Parameter | Value (Typical Range) | Notes |
|---|---|---|
| Outer Diameter | 200 mm – 4000 mm | Customizable upon request |
| Inner Diameter | 100 mm – 3000 mm | Matched to mounting interface |
| Overall Height | 50 mm – 500 mm | Varies with load capacity |
| Static Axial Load Rating | Up to 10,000 kN | Depends on size and row type |
| Static Radial Load Rating | Up to 5,000 kN | Calculated per bearing geometry |
| Operating Temperature | -30°C to +80°C | Special high-temp seals available |
| Gear Module | 4 – 20 (standard) | Custom module upon request |
Benefits for Mining Machinery
- Reduced Downtime: Durable raceway and optimized material selection minimize wear and maintenance frequency.
- Easy Integration: Pre-drilled mounting holes and standard bolt patterns simplify installation on OEM equipment.
- Consistent Performance: Precision manufacturing ensures smooth rotation, low noise, and stable torque transmission.
- Corrosion Resistance: Optional phosphate or zinc-rich coating provides additional protection in corrosive mining atmospheres.
Our factory in Luoyang, Henan, China, spans over 10,000 square meters and employs a team of 51–100 experienced workers and engineers. With an annual export value exceeding US$2.5 million, we have successfully shipped products to more than 20 countries including those in North America, South America, Europe, Southeast Asia, Africa, and Oceania. We ship from major ports such as Shanghai, Lianyungang, Qingdao, and Tianjin, ensuring timely delivery. Each slewing ring bearing undergoes a stringent 100% inspection process including hardness testing, ultrasonic flaw detection, and dimensional verification. We provide technical drawings, load calculation support, and after-sales service. Contact us today for a custom quotation or to discuss your specific mining machinery requirements.
Frequently Asked Questions (FAQ)
Q1: What alloy steel grades are used for your slewing ring bearings?
We commonly use 50Mn, 42CrMo, and 4140 alloy steels. These grades offer excellent toughness and wear resistance after heat treatment. For extremely high load applications, we can also recommend custom steel grades based on your load profile.
Q2: Can you supply slewing ring bearings without gears for direct drive systems?
Absolutely. We offer configurations with no gear teeth, internal gear, or external gear. The absence of gear teeth reduces weight and cost, and is ideal for hydraulic motor drive applications.
Q3: What sealing options are available for harsh mining environments?
Standard seals include double nitrile rubber lips with a labyrinth design. For dusty or wet conditions, we can add metal shields or replace seals with polyurethane or Viton materials. We also offer optional purging channels for grease injection.
Q4: How do you ensure the bearing meets my machine's load requirements?
Our engineering team uses finite element analysis (FEA) and static/dynamic load calculations based on your input parameters: axial load, radial load, overturning moment, and rotation speed. We provide a load rating certificate with each bearing. Sample testing is available before mass production.
Q5: What is the typical lead time for a custom-sized bearing?
For standard designs with existing tooling, lead time is 20–30 days. For fully custom sizes requiring new forging molds and heat treatment cycles, lead time may extend to 35–50 days. We always confirm a precise schedule upon order confirmation.
Q6: Do you provide surface treatments for corrosion protection?
Yes. We offer phosphating, zinc-rich coating, and Dacromet plating. For severe marine or acid mine drainage conditions, we can recommend a multi-layer coating system. These treatments significantly extend bearing life in corrosive environments.
Q7: Can you supply replacement bearings for existing mining equipment brands?
Certainly. We can reverse-engineer any existing slewing ring bearing based on customer samples or detailed drawings. Our team has experience matching dimensions, bolt patterns, and gear parameters for major mining machinery models.
Q8: What is your minimum order quantity (MOQ) for new designs?
For custom designs, MOQ is typically 1–5 pieces depending on size and complexity. For standard sizes with existing tooling, we accept single-piece orders. We also welcome trial orders for prototype evaluation.
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