Rotary Kiln Trunnion Bearings | White Metal Slide Bearings

The Foundation of Your Rotating Equipment's Reliability

The support bearings are the most critical components ensuring the stable, continuous operation of a rotary kiln, grinder, or mill. Operating under immense loads and high temperatures, these large hydrodynamic (slide) bearings are all that stands between smooth production and a catastrophic, plant-stopping failure. Any imperfection in their design or manufacture can lead to bearing wipe, seizure, and multi-million dollar losses in downtime and repairs.

Yile Machinery is a specialist manufacturer of large-scale, white metal (Babbitt) slide bearings for heavy rotating equipment. We engineer and manufacture trunnion support bearings that deliver exceptional reliability, superior load-carrying capacity, and extended service life for the world's most demanding industrial processes.

Key Features & Benefits:

• High-Performance White Metal (Babbitt) Lining: We utilize high-quality, tin- or lead-based Babbitt alloys, centrifugally cast or statically poured onto the bearing shell. This process ensures a perfect, void-free bond. The Babbitt provides an ideal low-friction surface with excellent embeddability, protecting the main kiln tyre/trunnion from damage.

• Robust Cast Steel Housing: The bearing housing (pillow block) is manufactured from high-strength cast steel (e.g., ZG270-500) designed to withstand the massive static and dynamic loads of the kiln and provide a rigid, stable support structure.

• Precision Machining for Hydrodynamic Lubrication: The performance of a slide bearing depends entirely on maintaining a microscopic film of oil between the surfaces. Our bearings are precision CNC-machined and often hand-scraped to achieve the exact geometric profile and surface finish required to generate and sustain this critical hydrodynamic wedge, preventing metal-to-metal contact.

• Comprehensive Quality Assurance: Every bearing undergoes a rigorous quality control process, including:

• Chemical analysis of the base metal and Babbitt.

• Ultrasonic Testing (UT) on the bond between the Babbitt and steel shell.

• Dye Penetrant Testing (PT) on the finished surface.

• Dimensional verification with CMM or laser trackers.

OEM & Replacement Bearings for Heavy Industry

We manufacture complete bearing assemblies as direct-fit replacements for existing equipment and for new capital projects. Our expertise covers a wide range of applications.

Industries Served:

• Cement & Lime Production

• Mining & Minerals Processing (e.g., Ball Mills, SAG Mills)

• Pulp & Paper

• Power Generation

Whether you have OEM drawings or need us to reverse-engineer a solution from a worn part, our engineering team is ready to assist. We provide complete solutions including the lower bearing shell, upper cap, and robust housing.

Entrust the heart of your rotating equipment to a specialist. Partner with Yile Machinery for bearings that are built to last.