Thrust bearings are designed to support axial loads in rotating machinery. Among different types, single thrust bearings and tandem thrust bearings are commonly used in industrial gearbox and extrusion systems.
1. What Is a Single Thrust Bearing?
A single thrust bearing is designed to carry axial load in one direction. It typically consists of a shaft washer, housing washer, and rolling elements such as cylindrical or tapered rollers.
It is widely used in applications where axial load direction is stable and predictable.
2. What Is a Tandem Thrust Bearing?
A tandem thrust bearing consists of multiple thrust units arranged in series, allowing it to support significantly higher axial loads within a compact radial space.
This structure is especially suitable for high-load systems such as twin-screw extruder gearboxes.
3. Key Differences
- Load Capacity: Tandem bearings provide higher axial load capacity than single thrust bearings.
- Structure: Single unit vs multi-stage stacked configuration.
- Space Efficiency: Tandem designs offer higher load density in limited space.
- Application Range: Single for general machinery, tandem for heavy-duty extrusion systems.
4. Applications Comparison
Single thrust bearings:
- Pumps
- Light machinery
- Low to medium axial load systems
Tandem thrust bearings:
- Twin-screw extruder gearboxes
- Plastic processing machinery
- High axial load industrial systems
5. How to Choose the Right Type
If your application requires compact design with high axial load capacity, tandem thrust bearings are recommended. For standard axial load conditions, single thrust bearings are more cost-effective.
6. OEM and Custom Solutions
We provide customized thrust bearing solutions including different row configurations, materials, cage designs, and clearance levels based on application requirements.
Contact our engineering team for technical support or selection guidance.