Alloy Steel Slewing Bearings for Truck-Mounted Cranes

Basic Information

Model NO.	Slewing Bearing	Material	50mn/42CrMo/42CrMo4V/Customized
Rolling-Element	Single Row /Double Row/Multiple-Column	Roller Type	Crowned Raceway
Gear Type	None Gear/Internal Gear/External Gear	Application	Mining, Petroleum, Automatic, Excavator, Crane
Raceway Hardness	55~62HRC	Advantage	Low Noise, Low Vibration, High Precision
Load Direction	Axial, Radial, Tilting Moment	Mounting Hole	Through Hole/Tapped Hole
Specification	50-10000mm	Origin	China

Product Description

Alloy Steel Slewing Bearings for Truck-Mounted Cranes

Slewing bearings are the core components that enable rotational motion. They comprise an inner ring and an outer ring, one of which usually incorporates a gear. Together with attachment holes in both rings, they enable optimized power transmission with a simple and quick connection between machine components.

The bearing raceways, in conjunction with the rolling elements and cages or spacers, are designed to accommodate loads acting singly or in combination and in any direction. Slewing bearing is also called rotary bearing, slewing ring bearing, or turntable bearing.

Single Row Four Point Ball

Features a compact structure and light weight. Steel balls make four-point contact with the raceway, withstanding axial forces, radial forces, and overturning moments simultaneously.

Single Row Crossed Roller

Rollers are arranged in a 1:1 crossed pattern. High manufacturing precision and small assembly clearance. Ideal for lifting and transportation equipment.

Double Row Ball

Three seat rings with different ball diameters. Suitable for medium diameter tower cranes and truck-mounted cranes requiring high tilting moment resistance.

Three Row Roller

Highest load-bearing capacity. Features separate upper, lower, and radial raceways. Perfect for heavy machinery like bucket wheel excavators.

Product Advantages

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Professional Manufacturing

Over 20 years of experience with strict quality control ensures stable and dependable performance.

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High Precision

Manufactured with advanced CNC equipment, featuring high gear accuracy and smooth operation.

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Custom Solutions

Support for non-standard and customized designs based on your drawings or special conditions.

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Premium Materials

High-quality alloy steel with surface hardening and anti-rust processes for harsh environments.

Technical Parameters

Feature	Specifications
Available Types	Single Row Ball, Crossed Roller, Double Row Ball, Three Row Roller, Thin Section, Flange Type
Gear Options	No gear, Internal gear, or External gear
Rolling Material	GCr5 / GCr15SiMn / Customized
Bearing Material	50Mn / 42CrMo / 42CrMo4V / Customized
Outer Diameter	50mm - 10000mm
Raceway Hardness	55-62 HRC
Lubrication	EP2 lithium lubricating grease
Warranty	12 Months

Production Process

1. Forgings: Selection of top suppliers and sampling of raw materials.
2. Rough Turning: Reserve enough size margins and conduct Ultrasound flaw detection.
3. Raceway Quenching: Medium frequency quenching process reaching HRC 55-62.
4. Tooth Processing: Shaping, hobbing, or milling methods for precision.
5. Assembly: Strict cleaning and installation of rollers, cages, and seals.
6. Testing: Final inspection ensuring all technical standards are met.

Workshop & Facility

Frequently Asked Questions

1. Are you a trading company or a manufacturer? We are a professional slewing bearing manufacturer with over 20 years of industrial experience.

2. How long is your typical delivery time? Generally, it is 4-5 days if the goods are in stock. For non-stock items, it is approximately 45 days, depending on the order quantity.

3. Do you provide samples for testing? Yes, we can offer samples. Please note that there is an additional cost for sample production.

4. What are your standard terms of payment? For amounts ≤1000USD, 100% in advance. For amounts >1000USD, 30% T/T in advance, with the balance due before shipment.

5. Can you provide customization for specific working conditions? Absolutely. We specialize in designing and producing slewing bearings tailored to various and unique working environments.

6. What kind of guarantee and after-sales service do you offer? We provide a 12-month warranty and lifelong after-sales technical support for all our products.