A slewing bearing, also called a slewing ring, is a large-diameter rolling bearing that supports axial loads, radial loads and tilting moments at the same time. It is bolted directly to the surrounding structure and typically works at low speed or in oscillating motion. Many slewing bearings have integrated internal or external gearing, so they can be driven directly by a pinion or a gearmotor.
We supply slewing bearings in three designs: single-row ball, double-row ball and single-row roller. Depending on how the rotation is driven, they are available with external gearing, internal gearing or gearless.
Our range also includes rotary tables.
Slewing rings can be made to drawing to meet specific requirements, adapting dimensions, shapes and configurations to each application. We handle the import of slewing rings for national and international customers, including logistics, documentation and all the related administrative procedures.
We supply slewing rings for earthmoving equipment, lifting equipment, port cranes, MTS tractors and roll-trailers and industrial plants such as water and waste treatment plants and rotary kilns. Other applications include agricultural machinery such as combine harvesters, forestry equipment, truck-mounted concrete pumps, aerial work platforms, industrial slewing platforms, industrial automation and robotics, solar tracking systems and medical equipment.
For applications requiring greater efficiency and control, we supply motorized slewing rings with diameters from 300 to 750 mm and transmission ratios from 62 to 150, equipped with electric or hydraulic gearmotors.
Slewing rings can be made to drawing to meet specific requirements, adapting dimensions, gearing, hole patterns and configurations to each application. We handle the import of slewing rings for national and international customers, including logistics, documentation and all the related administrative procedures.
Our slewing rings are made from carefully selected, high-quality materials. Each production batch comes with a certificate, guaranteeing traceability and reliability.
Features: certified material quality and origin · customization based on drawings · fast delivery times · surface treatments (galvanizing, anodizing) · solid or profiled section rings · use and maintenance manual.
Do you urgently need a high-quality slewing ring in a very short time? At Specialingranaggi we guarantee the agreed delivery times, with customized solutions compliant with ISO 9001:2015 standards and the strictest quality requirements. Send us your drawing or the details of your application to receive a quote.
There is no difference: they are two names for the same component. It is also known as a turntable bearing or slewing ring bearing.
The main factors are the axial load, radial load and tilting moment, the available diameter and mounting space, the type of gearing, the rotation speed and duty cycle, and the operating environment. Our technical department can help you select the right configuration.
Yes. We supply custom slewing rings made to the customer’s drawing, adapting dimensions, gearing, hole patterns and surface treatments to the application.
Yes. We serve national and international customers and take care of logistics, documentation and import procedures.
Our identity is characterized by two complementary souls: production and importation.