Factory tower crane spare parts slewing bearing model 011.45.1400

Slewing bearing, also known as turntable bearing, is a key component widely used in industrial fields, hailed as the "core joint of mechanical systems." As the core element enabling relative rotary motion between two objects, this component can simultaneously withstand axial loads, radial loads, and overturning moments, making it an indispensable transmission device for various types of heavy machinery equipment.

Slewing bearings find extremely wide applications, such as in tower cranes, tunnel boring machines, wind turbines, and earthmoving machinery.

External Gear Slewing Bearing Model 011.45.1400

Our Xuzhou slewing bearing manufacturer produces tower crane spare parts slewing bearing model 011.45.1400. This model features high precision, long service life, and strong load-bearing capacity.

>Types of Slewing Bearings

1. Single Row Four-Point Contact Ball Type

Structure‌: Adopts a double-ring integrated design, featuring compact and lightweight construction with high load-bearing efficiency.

Characteristics‌: Can simultaneously withstand axial loads, radial loads, and overturning moments, while also possessing excellent properties of high rigidity and low friction.

Applications‌: Particularly suitable for rotary conveying equipment, automated welding machinery, small to medium-sized construction cranes, and light excavators.

2. Double Row Different Diameter Ball Type

Structure‌: Features a three-ring design where upper and lower raceways can directly accommodate steel balls and separators. Uses a double-row different diameter steel ball layout (with different diameters for upper and lower rows) to optimize load distribution.

Characteristics‌: Can withstand large axial forces and overturning moments. When radial force exceeds 10% of axial force, reinforced raceway structure is required. Offers excellent overall rigidity and deformation resistance.

Applications‌: Suitable for heavy-duty rotary equipment with medium to large diameters, such as tower cranes and truck cranes.

3. Single Row Crossed Roller Type

Structure‌: Uses a double-ring integrated design with compact construction and high space utilization. Rollers are arranged in 1:1 crossed pattern with 90° contact between raceways and rollers, forming a high-rigidity load-bearing structure.

Characteristics‌: Can simultaneously withstand axial forces, overturning moments, and large radial loads. Compared to similar products, it offers stronger comprehensive load-bearing capacity, lighter weight, and features of high rigidity and low deformation.

Applications‌: Suitable for high-precision, high-rigidity, and compact rotary transmission applications, such as aerial work platforms and industrial robots.

4. Three Row Roller Type

Structure‌: Features a three-ring independent design with separate layout of upper, lower, and radial raceways to ensure precise load distribution among rows. Three rows of rollers independently bear loads (axial + radial + overturning direction), forming a multi-directional support structure.

Characteristics‌: Possesses ultra-strong load-bearing capacity, capable of simultaneously withstanding extremely large axial forces, radial forces, and overturning moments, with comprehensive performance superior to other types of slewing bearings.

Applications‌: Primarily used in heavy machinery fields requiring large diameters and ultra-high load-bearing capacity.

As a critical component of construction machinery, the technological development and market application of slewing bearings will continue to drive global infrastructure construction.