TGB Group Slewing Rings Solutions
TGB Group is a leading international manufacturer and distributor of slewing rings. Our products are subjected to the most extreme conditions to ensure optimum performance, as we have been trusted by the best companies in the industry for over 30 years.
Our wide range of slewing ring bearings, coupled with the extensive experience of our technical department, makes TGB Group the choice for the most demanding customers.
What is a Slewing Ring?
TGB Group is a leading slewing bearing manufacturer and we specialize in producing high-quality slewing rings designed for precision and durability.
A slewing ring is a type of bearing that allows rotational movement while supporting heavy loads, such as axial, radial, and tilting moment forces. It typically consists of two rings—an inner and outer ring—separated by rolling elements like balls or rollers. These components allow smooth rotation, and some slewing rings feature a gear mechanism for torque transmission.
Slewing rings are essential for a wide range of industrial machinery, including cranes, excavators, wind turbines, and robotics, where they enable efficient rotation under demanding load conditions. They often feature internal or external gearing and come equipped with grease fittings for maintenance, ensuring long-lasting performance.
Our slewing bearings are manufactured to meet the highest industry standards, ensuring long-lasting performance even in the most demanding environments.
Types of Slewing Rings
External Gear
Internal Gear
Without Gear
Casting
Single Ball Row
Double Ball Row
Single Roller Row
E, I, SD and Cast
The main types of slewing rings manufactured by TGB are external gear, internal gear, smooth (gearless) rings, and stamped steel rings.
In addition, depending on the application, they may incorporate balls or rollers, in single or double rows. We also offer a light series of slewing rings designed for low weight and high performance.
At TGB Group, we provide a wide range of standard models. However, if your project requires a special bearing solution, our engineering team is ready to assist you in finding or designing the product that best fits your requirements.
External Gear Slewing Bearing
Internal Gear Slewing Bearing
Without Gear Slewing Bearing
Lightweight Slewing Bearing
Casting Slewing Bearing
Single-row Ball Slewing Bearing
Double-row Ball Slewing Bearing
Roller Slewing Bearing
Slewing Ring Applications
Slew bearings, also known as turntable bearings, slewing rings or four-point contact ball bearings, are used in a wide range of applications in various sectors. Some examples of sectors where slew bearings are used include:
- Construction machinery: Slew bearings are used in equipment such as excavators, cranes, aerial work platforms, and drilling machines. They allow the machinery to rotate smoothly and precisely in a wide range of movements, from full 360-degree rotation to limited circular motion.
- Wind energy: Slewing rings are used in wind turbines to allow the blades to rotate and change direction with the wind. These bearings must withstand heavy loads and operate reliably in extreme conditions, such as in high humidity or low temperatures.
- Robotics: Slewing bearings are used in industrial robots and other automation systems to allow circular movement and rotation of the platform. These bearings must be highly precise and robust to withstand the load and repetitive work cycles.
- Medical equipment: Slew bearings are used in medical equipment such as hospital beds and examination chairs to allow rotation and movement of the platform. These bearings must be precise and smooth to avoid any disturbance to the patient and medical staff.
- Aerospace industry: Slew bearings are used in a wide variety of applications in the aerospace industry, including wheel steering systems, antenna platforms, stabilization systems, and much more. These bearings must be lightweight, strong, and operate reliably in extreme conditions, such as extreme temperatures and high pressure.
- Material handling equipment: Slew bearings are used in cranes, material handlers, and other equipment used to move and transport heavy loads. They allow the equipment to rotate and maneuver with precision, making it easier to position and place materials.
- Military and defense: Slew bearings are used in military vehicles and equipment, such as tanks, missile launchers, and radar systems. They allow the equipment to rotate and track targets, making it easier to aim and fire weapons or track incoming threats.
- Mining and mineral processing: Slew bearings are used in mining equipment such as excavators, draglines, and conveyor systems. They allow the equipment to rotate and move materials efficiently, reducing downtime and improving productivity.
- Marine and offshore: Slew bearings are used in marine equipment such as cranes, davits, and winches, as well as in offshore oil and gas platforms. They allow the equipment to rotate and lift heavy loads, making it easier to perform maintenance and repairs.
- Agriculture: Slew bearings are used in agricultural equipment such as harvesters and sprayers. They allow the equipment to rotate and maneuver in tight spaces, making it easier to harvest crops or spray fields with precision.
In summary, slew bearings are used in a wide variety of industries and applications where rotation and maneuverability are important. They provide smooth and precise motion, allowing equipment to operate efficiently and reliably.
Technical specifications of Slewing Rings
TGB Group slewing rings are designed to deliver optimal performance across a wide range of industrial applications. Proper installation and maintenance are essential to ensure durability, reliability, and maximum operational efficiency. Below are the main technical aspects to consider:
Proper Lubrication
For smooth and long-lasting operation, it is essential to maintain adequate lubrication of the slewing ring. This includes both the raceway and the gear teeth (if the ring is geared). Regular lubrication not only reduces wear but also minimizes the risk of failures during operation.
Bolting and Tightening Torque
The use of appropriate fasteners is essential to ensure the stability and performance of the slewing ring. In addition, all bolts must be tightened according to the tightening torque values specified by the manufacturer, ensuring secure fastening and preventing structural deformation.
Slewing Ring Seating
The seating of the slewing ring, meaning the base on which it is installed, must strictly comply with the specifications provided in the TGB installation manual. An uneven or improperly prepared surface may cause premature wear and compromise operational accuracy and safety.
Customized Finishes
TGB Group offers the possibility of supplying slewing rings painted in the customer’s desired RAL color, allowing adaptation to specific aesthetic or regulatory requirements. In addition, special surface treatments, such as anti-corrosion coatings, can be applied for use in extreme environments. These finishes provide additional protection against oxidation and ensure reliable performance even under adverse conditions.
Installation and Maintenance Manual
To ensure optimal installation and maintenance, TGB Group provides customers with a detailed installation and maintenance manual. This document includes all necessary technical specifications, practical recommendations, and best practices to extend the service life of the slewing ring.
Installation and maintenance of Slewing Rings
Proper installation of slewing rings is a determining factor in ensuring long-term performance, safety, and durability. It is essential that the supporting surfaces are perfectly flat, clean, and machined according to the recommended tolerances, ensuring uniform contact that prevents localized stresses during operation. Precise alignment of the assembly and controlled tightening of the fasteners—following a cross-tightening pattern and appropriate torque values—contribute to even load distribution and stable system operation.
Regarding maintenance, slewing rings require periodic supervision aimed at preserving their working conditions. Regular lubrication, using greases suitable for the environment and the application, is essential to reduce wear and protect the raceways from contamination. Likewise, visual inspection of seals, bolts, and fastening elements helps to detect early deviations, clearances, or signs of fatigue.
A preventive maintenance strategy, adapted to the duty cycle and environmental conditions of the application, helps extend the service life of the slewing ring and minimize unplanned downtime. This approach is especially relevant in demanding industrial applications, where the reliability of the slewing system is critical to the operational continuity of the equipment.
Related Products
Slewing rings are commonly integrated into complete slewing systems together with planetary gearboxes, pinions, and drive modules. Discover our range of related products to configure slewing solutions tailored to each application.
