Double Direction Thrust Ball Bearings
Double direction thrust ball bearings are designed to support axial loads from both directions in a single bearing arrangement. This TFL product list covers metric SKF-style replacement options, including 522, 523, 524, 542, 543 and 544 series models with bore sizes from 10 mm to 150 mm. Buyers can compare bore diameter, outer diameter, width, housing washer inner diameter, chamfer dimensions, cage material, dynamic thrust load, static thrust load, speed rating and weight. These bearings are commonly used in vertical shaft systems, screw drives, machine tools, rotary tables, gearboxes and industrial positioning mechanisms where thrust load can reverse direction. TFL helps customers source suitable alternatives based on bearing number, drawings, samples or application requirements.
Unique Bidirectional Load-Carrying Capacity
The Ideal Choice for Pure Axial Loads
Minimum Load Requirements
Double Direction Thrust Bearing Selection Guide
Double direction thrust ball bearings support axial load from both directions. They are sometimes described as double-sided thrust bearings or bidirectional axial bearings, but the key selection point is two-direction thrust load support, not radial load capacity.
How to Choose This Bearing Type
Choose a double direction thrust ball bearing when axial force can act from both sides of the shaft. These bearings are suitable for locating positions in vertical shafts, screw drives, rotary mechanisms, and other applications where reversing thrust may occur. They should not be selected for radial load or combined load applications without checking the complete bearing arrangement.
Common Series and Model Range
| Series | Typical Selection Focus | Procurement Notes |
|---|---|---|
| 522 series | Compact double direction thrust bearing range | Common choice when width and outside diameter need to remain moderate. |
| 523 series | Larger section and higher axial load capacity | Check outside diameter and width carefully before replacement. |
| 524 series | Heavy thrust load applications | Confirm lubrication, speed and mounting rigidity requirements. |
| 542 / 543 / 544 series | Alternative double direction designs with different dimensional arrangements | Confirm washer dimensions, total width and suffix details before replacement. |
How to Read a Model Number: Example 52208
52208 is a representative double direction thrust ball bearing with a 30 mm bore, 68 mm outer diameter and 36 mm total width. In this model number, “522” identifies the metric double direction thrust bearing series, while “08” is the standard bearing bore code. For standard bearing numbers from 04 upward, the bore code multiplied by 5 gives the bore size in millimeters.
| Code / Parameter | Example in 52208 | Why It Matters |
|---|---|---|
| 522 | 522 series | Identifies a metric double direction thrust ball bearing series. |
| 08 | 30 mm bore | Confirms shaft fit and center washer size. |
| Housing washer ID | 42 mm | Must match the housing-side seating design. |
| Load and speed | 9945 lbf dynamic thrust load / 3800 rpm | Checks whether the bearing suits the axial load and operating speed. |
522 vs 523 vs 524 Selection
The 522 series is usually selected for compact bidirectional axial support. The 523 series generally provides a larger section and higher load capacity in comparable bore ranges. The 524 series is used when higher thrust load capacity is required, but it also requires more installation space and may have lower speed capability. Always compare outside diameter, width, load rating, and speed before replacement.
Key Specifications to Confirm Before Quotation
Before requesting a quote, confirm the bearing number, bore diameter, outer diameter, total width, housing washer inner diameter, chamfer dimensions, cage material, dynamic thrust load, static thrust load, maximum speed, shaft arrangement, and lubrication method. For M suffix models such as 52412 M, confirm cage material and suffix requirements before interchange.
Replacement and Cross Reference Notes
The models on this page are listed with dimensional cross-reference support for common double direction thrust ball bearing numbers. TFL can help compare 522, 523, 524, 542, 543, and 544 series models by dimensions, cage material, load rating, speed, and application requirements before recommending a replacement.
Brand and part number references are used only for identification, replacement, interchange, and cross-reference purposes. TFL does not imply original-brand supply or authorized distribution unless specifically stated.
Common Applications
Double direction thrust ball bearings are commonly used in vertical shaft assemblies, screw drives, machine tools, rotary tables, gearboxes, industrial lifting systems, valve actuators, and positioning mechanisms where axial load may act in both directions.
Popular Models / High-Demand Models
Common models include 52208, 52210, 52212, 52310, 52312, 52409, 52412 M, 54310, 54410, and 54420 M. 52208 is a strong priority model because it has a dedicated product page and represents a common compact 30 mm bore double direction thrust bearing application.
Engineering Note
Double direction thrust ball bearings are designed for axial load from both directions, not radial load. If the application includes radial force, combined loading, shaft deflection, or high-speed rotation, confirm whether another bearing arrangement is more suitable.
Need Help Matching a Double Direction Thrust Bearing?
Send us the bearing number, drawing, sample photos, or working conditions. TFL can help check series, washer dimensions, axial load rating, speed, cage material, and available sourcing options before shipment coordination.
Request Bearing SupportTFL / SDTFL Bearing is a bearing supplier and sourcing partner. We help customers source suitable standard or customized bearing alternatives from qualified factory resources and inspect model, quantity, appearance, packaging, and basic quality requirements before shipment.
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