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Single Row Four‑Point Contact Ball Slewing Ring – precision engineered by Henan San Kuang Machinery Technology Co., Ltd., a professional manufacturer with a 10,000–30,000 m² factory located in Luoyang, China. Since our establishment in 2022, we have focused on delivering high‑quality slewing rings that meet the demanding requirements of global customers. This slewing ring integrates a four‑point contact ball structure in a single row, offering excellent load capacity, compact design, and smooth rotation ideal for medium‑duty applications. Our factory supplies directly to OEMs and distributors across more than 15 overseas markets, ensuring competitive pricing and reliable lead times.
This product is suitable for a wide range of machinery including excavators, truck cranes, marine cranes, wind turbines, solar trackers, and medical equipment. The four‑point contact ball design simultaneously handles axial loads, radial loads, and overturning moments, making it a versatile choice for both rotating and supporting functions. Each slewing ring undergoes strict quality control, from raw material inspection to final dimensional verification.
Key Features & Technical Specifications
- Single Row Four‑Point Contact Design: Provides high axial and radial load capacity with minimal space requirement.
- Forged Steel Raceway: Induction hardened to enhance wear resistance and prolong service life.
- Optional Gear Teeth: Available with internal or external gear, or without gear, customizable tooth profile and module.
- Sealing Options: Standard rubber seal prevents dust and moisture ingress; metal labyrinth seal available for harsh environments.
- Precision Grades: Standard P0, optional P6 or P5 for high‑accuracy applications.
- Mounting Holes: Drilled according to customer drawings or standard patterns.
- Surface Treatment: Phosphating or zinc coating for corrosion protection.
- Low Friction Torque: Optimized ball groove geometry ensures smooth rotation under load.
| Parameter | Value |
|---|---|
| Outer Diameter | 600 mm |
| Inner Diameter | 440 mm |
| Height | 56 mm |
| Ball Diameter | 20 mm |
| Number of Balls | 56 |
| Axial Load Capacity (static) | 120 kN |
| Radial Load Capacity (static) | 85 kN |
| Overturning Moment (static) | 8 kN·m |
| Weight | 15 kg |
Customer Benefits
- Cost‑Effective Solution: Direct factory supply eliminates middleman margins, offering high quality at competitive factory prices.
- Customizable Dimensions: We accept custom orders for OD, ID, height, gear specifications, and mounting hole patterns – minimum order quantity flexible.
- Reliable Lead Time: With a large factory and 51–100 skilled employees, standard models ship within 15–25 working days; custom orders within 30–40 days.
- Global Logistics: Convenient shipment from ports of Shanghai, Lianyungang, Qingdao, or Tianjin, with experience exporting to North America, Europe, Southeast Asia, Africa, Oceania, and the Middle East.
- Technical Support: Our engineers provide application guidance, installation recommendations, and after‑sales assistance.
At Henan San Kuang Machinery Technology Co., Ltd., we are committed to continuous improvement and customer satisfaction. Our annual export value of US$2.5–5 million reflects the trust of international clients. The factory spans over 10,000 m² and is equipped with modern CNC machining centers, heat treatment lines, and precision measuring instruments. Every slewing ring is 100% inspected for noise, runout, and torque before packaging. We welcome your own inspection or third‑party testing.
Choose our Single Row Four‑Point Contact Ball Slewing Ring for your next project – combine reliability, adaptability, and factory‑direct value. Contact our sales team today for a quote or technical consultation. Your satisfaction is our priority.
Frequently Asked Questions (FAQ)
-
Q: What is the typical minimum order quantity (MOQ)?
A: For standard models, MOQ is 1 piece for sample testing. For bulk orders, we recommend 10–50 pieces per size to optimize production efficiency. -
Q: Can you provide slewing rings with special gear modules or tooth count?
A: Yes, we customize gear parameters according to your drawings or engineering requirements – module, tooth count, pressure angle, and gear type (internal/external) are all adjustable. -
Q: What raw materials are used for the raceways and balls?
A: Standard material is 50Mn forged steel for rings and GCr15 bearing steel for balls. 42CrMo is available for heavier loads upon request. -
Q: How do you ensure product quality during mass production?
A: We follow a strict QC process: incoming material inspection, in‑process dimensional checks, hardness testing, magnetic particle inspection (optional), and final assembly run‑out measurement. -
Q: Do you offer certificates of material or test reports?
A: Yes, we can provide material certificates, dimensional inspection reports, and hardness test reports upon request. -
Q: What is the warranty period for your slewing rings?
A: Standard warranty is 12 months from the date of shipment against manufacturing defects. Extended warranty is negotiable for large projects. -
Q: Can you supply slewing rings without gear for applications that use a separate drive?
A: Absolutely. We offer models with no gear teeth for those who prefer a smooth outer ring for external drive solutions. -
Q: What packaging do you use for export?
A: Each slewing ring is individually packed with rust‑proof oil, wrapped in plastic film, then secured in a wooden crate or steel‑frame crate suitable for sea freight and long‑distance transport.
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