Wear Resistant Thrust Roller Bearings from China Factory - Quality Suppliers for High Axial Load Applications
Types of Thrust Roller Bearings
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1. Cylindrical Thrust Roller Bearings
Use cylindrical rollers for high axial load capacity.
Example: 811, 812 series (e.g., 81115, 81215).
Example: 811, 812 series (e.g., 81115, 81215).
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2. Tapered Thrust Roller Bearings
Utilize tapered rollers to handle combined axial and radial loads (axial dominant).
Example: 893, 894 series.
Example: 893, 894 series.
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3. Spherical Thrust Roller Bearings
Feature spherical rollers and self-aligning capability (±2°). Compensate for misalignment between shaft and housing.
Example: 292, 293 series.
Example: 292, 293 series.
Key Features
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High Axial Load Capacity
Optimized roller design and material for extreme loads.
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Low Speed Suitability
Ideal for slow-rotation heavy-duty applications.
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Rigidity
Provides stable support under high-stress conditions.
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Separable Design
Shaft/housing washers and roller assemblies can be mounted separately.
Design Variants
- Single-Direction: Handles axial loads in one direction (e.g., 811 series).
- Double-Direction: Accommodates bidirectional axial loads (e.g., 893 series).
- With Flat Washers: Standard design for uniform load distribution.
- With Spherical Washers: Self-aligning for misalignment compensation (e.g., 294 series).
Cage Types
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Stamped Steel Cages
Economical and widely used (standard for most series).
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Machined Brass Cages
For high-temperature or high-speed applications (suffix MB).
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Polyamide Cages
Lightweight and suitable for moderate temperatures (suffix TVP).
Applications
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Heavy Machinery
Crane hooks, hydraulic jacks, extruders.
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Industrial Equipment
Oil rigs, steel mill machinery, mining conveyors.
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Power Transmission
Gearboxes, marine propulsion systems.
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Aerospace
Landing gear mechanisms, thrust reversers.
Technical Specifications
| Parameter | Details |
|---|---|
| Tolerance Grades | Standard (P0), precision (P6, P5) available. |
| Operating Temperature | -30°C to +200°C (dependent on cage/lubricant). |
| Load Direction | Primarily axial; radial load capacity ≤5% of axial rating. |
| Misalignment Tolerance | None (except spherical thrust roller types). |
Installation Notes
⚠️ Alignment: Requires perfect alignment between shaft and housing (non-self-aligning types).
🔧 Preload: Preload may be applied for enhanced rigidity in precision systems.
🛢️ Lubrication: Grease or oil-based lubricants recommended for high-load/low-speed operations.
Advantages
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Exceptional Axial Load Capacity
Up to 300% higher than thrust ball bearings.
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Durability
Robust construction for shock and vibration resistance.
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Customization
Options for special materials, coatings, and seals.
Frequently Asked Questions
What is the difference between cylindrical and spherical thrust roller bearings?
Cylindrical thrust roller bearings use straight cylindrical rollers and are designed purely for high axial loads in one direction. Spherical thrust roller bearings use barrel-shaped rollers and offer self-aligning capability of up to ±2°, making them suitable for applications where shaft-to-housing misalignment is unavoidable.
Can thrust roller bearings handle radial loads?
Thrust roller bearings are primarily designed for axial loads. They can accommodate a small amount of radial load, but this should not exceed 5% of the axial load rating. For applications with significant combined loads, tapered thrust roller bearings are the most suitable option.
What lubrication is recommended for thrust roller bearings?
For most heavy-load, low-speed applications, grease lubrication is recommended. Oil lubrication is preferred in high-temperature environments or where continuous lubrication systems are in place. The choice of lubricant should also consider the operating temperature range of -30°C to +200°C.
What cage material should I choose for high-temperature applications?
Machined brass cages (suffix MB) are the best choice for high-temperature or high-speed applications due to their superior thermal resistance and mechanical strength. Polyamide cages (suffix TVP) are suitable for moderate temperatures, while stamped steel cages are the standard economical option for general use.
What does the separable design of thrust roller bearings mean for installation?
The separable design means the shaft washer, housing washer, and roller-cage assembly can be mounted independently. This simplifies installation and removal, especially in tight spaces or heavy-duty machinery where handling a single assembled unit would be difficult.
Which thrust roller bearing series is best for bidirectional axial loads?
Double-direction thrust roller bearings, such as the 893 series, are specifically designed to accommodate axial loads acting in both directions. They are commonly used in gearboxes, marine propulsion systems, and other power transmission applications where load reversal occurs.