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Help CenterNon‑Gear Slewing Bearing Large Diameter for Industrial Machinery
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As a professional manufacturer based in Luoyang, Henan, China, Henan San Kuang Machinery Technology Co., Ltd. specializes in producing high-quality slewing bearings for industrial machinery. Our Non‑Gear Slewing Bearing Large Diameter is engineered to deliver reliable rotational support for heavy‑duty applications where internal gear meshing is not required. With a factory spanning 10,000–30,000 square meters and an annual export value over US$2.5 million, we combine advanced manufacturing capabilities with rigorous quality control to meet the demands of global markets including North America, Europe, and Southeast Asia.
This bearing series is designed for large‑diameter rotation systems in construction equipment, port machinery, wind turbines, and industrial automation. Its non‑gear design reduces complexity and cost while maintaining high load capacity and rotational accuracy. We offer a wide range of outer diameters from 500 mm to 6000 mm, with custom dimensions available to suit specific equipment layouts.
Key Features & Technical Specifications
Material Options: Made from high‑strength alloy steel (50Mn or 42CrMo) with induction hardening for raceway durability.
Precision & Tolerance: Machined to meet ISO P5 or P6 tolerance classes, ensuring smooth rotation and minimal clearance.
Sealing & Lubrication: Double lip seals with grease fittings for reliable contamination protection and long‑life lubrication.
Load Capacity: Supports high axial, radial, and tilting moment loads, ideal for heavy rotating platforms.
Customization: Available with multiple mounting hole patterns, surface coatings (zinc, phosphating, or paint), and special heat treatment processes per request.
Application Ready: Suitable for excavators, mobile cranes, aerial work platforms, and solar tracking systems.
| Parameter | Value Range |
|---|---|
| Outer Diameter (mm) | 500 – 6000 |
| Inner Diameter (mm) | 300 – 5500 |
| Height (mm) | 50 – 300 |
| Raceway Hardness (HRC) | 50 – 60 (induction hardened) |
| Working Temperature (°C) | -40 to +120 |
| Tilting Moment Capacity (kN·m) | Varies by size (consult factory) |
Our non‑gear design offers several advantages for industrial machinery:
Cost‑effective: Eliminates gear cutting and matching processes, reducing unit price without sacrificing performance.
Simplified maintenance: No internal gear wear or backlash adjustment needed, lower downtime and operating cost.
Compact design: Lower profile compared to gear‑type bearings, saving space in tight installations.
Direct drive compatibility: Perfect for applications driven by external pinion or friction wheels (e.g., turntables).
Flexible mounting: Can be bolted directly to flanges with standard or custom bolt patterns.
Trust & Reliability
Since our establishment in 2022, we have built a strong reputation among global buyers. Our factory operates 51–100 skilled employees and exports to North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Middle East, East Asia, Western Europe, Central America, Northern Europe, Southern Europe, South Asia, and the domestic market. We ship from major Chinese ports: Shanghai, Lianyungang, Qingdao, and Tianjin. With an annual export value of US$2.5–5 million, we guarantee timely delivery and responsive after‑sales support. Every bearing is 100% inspected for dimensions, hardness, and rotational smoothness before shipment. We welcome custom orders and provide engineering assistance to optimize your design.
Choose our Non‑Gear Slewing Bearing Large Diameter for a cost‑efficient, durable, and precision rotation solution. Contact us today for a quotation or technical consultation.
Frequently Asked Questions
Q1: What is the difference between a gear slewing bearing and a non‑gear one?
A: A gear slewing bearing has integral gear teeth on the inner or outer ring for direct drive by a pinion. A non‑gear bearing has a smooth raceway, requiring an external driving mechanism (e.g., friction wheel or separate gear ring). Non‑gear bearings are generally lower cost and more compact.
Q2: What sizes can you manufacture?
A: We offer outer diameters from 500 mm to 6000 mm. Custom sizes outside this range are possible upon request.
Q3: What materials are used for your slewing bearings?
A: Standard materials are 50Mn and 42CrMo alloy steel. The raceways are induction hardened to 50-60 HRC. Alternative materials are available for special environments.
Q4: How do you ensure quality?
A: Each bearing undergoes dimensional inspection, hardness testing, and rotational smoothness check. We follow internal quality procedures and can provide test reports upon request.
Q5: Can you add mounting holes according to my drawings?
A: Yes, we can customize bolt patterns, hole sizes, and locations according to your engineering drawings.
Q6: What is the typical lead time?
A: For standard sizes, lead time is about 20–30 working days. Custom orders may require 35–45 working days depending on complexity.
Q7: What is the recommended lubrication?
A: We supply bearings pre‑filled with lithium‑based grease. For extreme conditions, we recommend relubrication every 100 operating hours using NLGI grade 2 or 3 grease.
Q8: Do you provide mounting instructions?
A: Yes, each bearing comes with a manual covering handling, installation, and maintenance guidelines.
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