Complete Rotary Kiln Support Roller Assemblies

The support roller assembly is the foundational load-bearing system for any rotary kiln, dryer, or grinding mill. These robust assemblies bear the entire weight of the rotating kiln shell, transferring the massive load from the kiln tyre to the foundation while allowing for smooth rotation.

Yile Machinery engineers and manufactures complete, custom support roller assemblies (trunnion roller assemblies) , including integrated thrust rollers, to ensure the stable, reliable, and long-lasting operation of your equipment.

Components of an Integrated Support & Thrust Roller Assembly

Our assemblies are delivered as a complete, ready-to-install solution, comprised of several precision-engineered components:

1. Support Roller (Trunnion Roller):

• Function: The main roller that makes direct contact with the kiln tyre.

• Material: Typically manufactured from high-quality cast or forged steel (e.g., ZG55, ZG42CrMo) . The roller surface is subjected to hardening through quenching and tempering to provide excellent wear resistance.

2. Roller Shaft:

• Function: The central axle on which the support roller rotates.

• Material: Forged from high-strength alloy steels like 42CrMo to withstand immense shear and bending forces. Precision machined for a perfect bearing fit.

3. Bearing Housing (Pedestal):

• Function: The heavy-duty cast structure that encloses the bearings and supports the roller shaft.

• Material: Made from high-strength cast steel (e.g., ZG45) , designed to absorb vibration and maintain alignment.

4. Thrust Roller Assembly:

• Function: This crucial sub-assembly prevents the kiln from sliding axially (uphill or downhill). It consists of a smaller roller that pushes against the side face of the kiln tyre.

• Control: Can be configured as a standard mechanical stop or as a hydraulic thrust roller system for automated kiln position control.

Key Features & Engineering Benefits

• High Load Capacity: Robust design and premium materials (forged rollers, cast steel housings) are engineered to support the immense weight of the largest kilns.

• Superior Wear Resistance: Surface-hardened rollers and precise alignment minimize wear on both the roller and the kiln tyre, extending the service life of both components.

• Stable Operation: Precision machining of all components ensures smooth rotation, reduces vibration, and protects bearings and drive components from premature failure.

• Integrated Solution: We provide the complete assembly—including roller, shaft, bearings, housing, and thrust roller—guaranteeing perfect fitment and simplifying installation.

• Custom Design: We manufacture to your exact specifications based on kiln load, speed, and environmental conditions.

Applications

Our support roller assemblies are the foundation for rotating machinery in heavy industries, including:

• Cement & Lime Plants (for kilns and coolers)

• Mining & Minerals Processing (for dryers and grinding mills)

• Chemical & Fertilizer Industries (for granulators and dryers)

Request a Quote for a Complete Assembly

Ensure the stability and longevity of your rotary kiln. Contact us with your technical drawings or kiln operational data to receive a comprehensive engineering proposal for a complete support and thrust roller assembly.