Thrust ball bearings are classified into those with flat seats or aligning seats depending on the shape of the outer ring seat (housing washer). They can sustain axial loads but no radial loads. For Single-Direction Thrust Ball Bearings, pressed steel cages and machined brass cages have usually been used. The cages in Double-Direction Thrust Ball Bearings are the same as those in Single-Direction Thrust Ball Bearings of the same diameter series. TFL can provide a full range of thrust ball bearings and thrust roller bearings(pt,tr,el).
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- Available in two designs: single direction and double direction.
- To accommodate initial misalignments in an assembly both designs are available with spherical aligning seats or aligning seat washers.
- High-quality steel-ultra clean steel to extend bearing life by up to 80%.
- Advanced Grease Technology — TFL lubricants that can extend grease life and performance.
- High-Grade Balls — Quiet and smooth operation even at high speed.
- Optional seating rings take initial misalignment.
As a global leader in the bearing industry, TFL provides custom solutions to lead your industry. We find solutions to get the bearing you need and reduce your long lead times. Whether that is a bearing that is modified, manufactured, or repaired to your specification, we can help you. In this article, we discuss thrust bearings, from designs to applications and more.
Chapters
Chapter 1 What are Thrust Bearings, Types, and How Do They Work
Thrust bearings include a variety of bearings that assists axial loads or axial force. It is an axial bearing that permits rotation between parts. Thrust bearings support the axial thrust of both horizontal and vertical shafts.
General types:
1. Flat land bearing – made of a single flat disc with grooves and no moving parts
2. Tilting pad bearing – consists of moveable metal plates called thrust shoes
Types of Thrust Bearings that Support Axial Load
Thrust bearings support a force applied in the same direction as the shaft. They can be categorized into two major types: Thrust ball bearing and Thrust roller bearing. The thrust ball bearings are used to deliver high performance, while the thrust roller bearings are typically used in applications where high load-carrying capacity is needed.
- Thrust ball bearing – used in low thrust applications where there is little axial load. They are available in two designs: single direction and double direction.
- Cylindrical thrust roller bearing – give good carrying capacity.
- Tapered thrust roller bearing – most commonly used in automotive applications. They can support greater thrust loads than the ball type due to the larger contact area. They are designed to accommodate combined loads, i.e., simultaneously acting radial and axial loads.
- Spherical thrust roller bearing – Spherical roller thrust bearings offer the highest load rating density of all thrust bearings.
Four Thrust Bearings for Every Need
1. Oil-Embedded – used for applications with frequent starts and stops, the oil lubricates the bearing during startup
2. Dry-Running – operate with less friction and can work in high-temperature environments
3. Food-Grade – made of FDA listed materials for use in food applications
4. Corrosion-Resistant – high strength makes them suitable in marine and mining applications
Material Used in Thrust Bearings
The most common materials used to produce thrust bearings are stainless steel and ceramic. The cage is made of brass or steel, depending on the application.
Chapter 2 How to Select the Type of Bearing [Structures of Thrust Bearings]
When selecting the right bearing, it is essential the bearing fits the requirements for its use.
Meaning…
You must select the right bearing type based on the direction of the load.
The force applied to a bearing is called the “load.” There are the radial and axial loads applied to a bearing. The force applied vertically to the shaft is called the radial load, and the force applied in the same direction (parallel) as the shaft is called the axial load.
Radial bearings support the force that is applied vertically to the shaft. Thrust bearings support a force applied in the same direction as the shaft.
An axial or thrust bearing uses side-by-side races. The race on the side into which the shaft is inserted is called the shaft race. The race inserted into the housing is called the housing race. [source]
Chapter 3 Bearing Applications in Different Industries
Benefits to Thrust Bearings
- They offer high reliability
- Provide high load capacity in harsh environments
- Simple mounting – the shaft and housing washers can be mounted separately
- Provide a wide assortment
- Availability
Roller thrust bearings have higher load carrying capacities than ball thrust bearings. The higher-speed applications require oil lubrication.
How does a thrust bearing work
There are various types of thrust bearings, each with its strength. The unique bearings deliver different performance and load capacities.
Thrust ball bearings are used in industries such as aerospace, chemical industry, and utilities. Thrust roller bearings are suitable for agriculture and other sectors that require high-load capacity.
Thrust bearings are also commonly used in automotive and marine applications. They are used in cars because the forward gears in modern car gearboxes use helical gears, which, while aiding in smoothness and noise reduction, cause axial forces that need to be dealt with. [source]
Thrust shafts are often used in the following industries:
Chapter 4 What Causes Thrust Bearing Failure and How to Avoid Them
When a bearing does fail, it is vital to determine the exact cause so adjustments can be made.
The three most common causes of thrust bearing failure are contaminants, misalignment, and overloading.
1. Contaminants
Contamination is one of the leading causes of bearing failure. Airborne dust, dirt, sand, and water are the most common ones you run into, but chemicals and corrosives can also damage bearings.
What to look for: Watch for denting of rolling elements and raceways that cause vibration.
How to Fix it: Filter the lubricant and clean work areas, tools, fixtures, and hands to reduce contamination risk.
2. Misalignment
Misalignments lead to excessive vibration and loads.
What to look for: According to Bearing Failure: Causes and Cures, the most commonly found causes of misalignment include: bent shafts, dirt or burrs on the shaft or housing shoulders, shaft threads that are not square with shaft seals, and locking nuts with faces that are not square to the thread axis.
To prevent misalignment, there are a few best practices you can keep in mind.
How to Fix it: Ensure you inspect shafts and housing regularly, use precision-grade locknuts, and shim the housings as needed.
3. Overloading
Putting too much load on a bearing is another common cause of failure.
What to look for: This may look like normal fatigue. You may see heaving rolling-element wear paths, evidence of overheating, and widespread fatigue areas.
How to Fix it: Reduce the load or consider a redesign using a bearing with greater capacity.
When a bearing fails, it negatively impacts your facility, your reputation, and your bottom line. Regular preventive measures can keep your bearings at peak performance for as long as possible, saving your business time and money.
You can take preventative measures to increase your bearing’s lifespan and prevent improper wear on them. Read more from BDS, “What Causes Bearing Failures and Preventative Measures.”
As a global leader in the bearing industry, TFL provides customized solutions to lead your industry. We find a solution to get the bearings you need and shorten your long lead time. Whether it is a bearing that is modified, manufactured, or repaired according to your specifications, we can help you.
Thrust bearings can be divided into two main categories: ball thrust bearings and roller thrust bearings.
Thrust bearings play a crucial role in many applications, including automotive, aerospace, energy, and industrial equipment, among others.
You will get efficient and thoughtful service from Shangyou.
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｜Thrust Bearings Catalog
The thrust bearings catalog is an important reference for engineers and designers when selecting appropriate thrust bearings.
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Product Classification：Different types of thrust bearings are categorized, such as ball cushion type, roller type, and cylindrical roller type.
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Product Specifications：Specifications for each type of thrust bearing are listed, including dimensions, load capacity, speed ratings, etc.
Bearing No. (Flat type)
Bore(d)(mm)
Outer(D)(mm)
T(mm)
F4-9M
4
9
4
F4-10M
4
10
4
F5-10M
5
10
4
F5-11M
5
11
4.5
F5-12M
5
12
4.5
F6-12M
6
12
4.5
F6-14M
6
14
5
F7-13M
7
13
4.5
F7-15M
7
15
5.5
F7-17M
7
17
6
F8-16M
8
16
5
F8-19M
8
19
7
F8-22M
8
22
7
F9-17M
9
17
5
F9-19M
9
19
6.5
Bearing No. (Flat type)
Bore(d)(mm)
Outer(D)(mm)
T(mm)
r(mm)
F9-20M
9
20
7
-
F10-18M
10
18
5.5
-
10
24
9
0.5
10
26
11
1
F12-23M
12
23
7.5
-
12
26
9
0.5
12
28
11
1
15
28
9
0.5
15
32
12
1
17
30
9
0.5
17
35
12
1
20
35
10
0.5
20
40
14
1
25
42
11
1
25
47
15
1
Complete Version of Ball Thrust Bearings Catalog
Bearing No.
Bearing No. (Thrust bearings plate)
Bearing No. (Bearings plate)
Dc1(mm)
Dc(mm)
DW(mm)
AXK
AS
LS
55
78
3
AXK
AS
LS
60
85
3
AXK
AS
LS
65
90
3
AXK
AS
LS
70
95
4
AXK
AS
LS
75
100
4
AXK
AS
LS
80
105
4
AXK
AS
LS
85
110
4
AXK
AS
LS
90
120
4
AXK
AS
LS
100
135
4
AXK
AS
LS
110
145
4
AXK
AS
LS
120
155
4
AXK
AS
LS
130
170
5
AXK
AS
LS
140
180
5
AXK
AS
LS
150
190
5
AXK
AS
LS
160
200
5
Complete Version of Needle Roller Thrust Bearings Catalog
Thrust bearings play a crucial role in various mechanical applications, and selecting the appropriate thrust bearing is vital to ensuring the stability of equipment operation. By understanding the basic principles of thrust bearings and consulting relevant product catalogs, you can make better choices to meet your needs and ensure the performance and reliability of your equipment.
｜How to select thrust bearings?
Choosing the appropriate thrust bearings is a critical step in ensuring the smooth operation of the machinery.
Here are some important factors to consider when selecting the appropriate thrust bearings:
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Load Type and Magnitude: You need to determine the type and magnitude of the loads your application will bear to ensure that the selected bearings can effectively handle these loads.
-
Operating Speed: If your application requires high-speed operation, ball thrust bearings may be a better choice. For larger loads, consider using roller thrust bearings.
-
Installation Space: Consider the available installation space in your machinery to determine the appropriate size of thrust bearings.
Additionally, you should also consider the reputation of the manufacturer and the quality of the product to ensure that the thrust bearings you purchase have excellent durability and reliability.
Choosing the appropriate thrust bearings requires considering multiple factors, including load type and magnitude, operating speed, and installation space. By carefully considering these factors, you can find the thrust bearings that best suit your application, thereby ensuring smooth and reliable operation of your equipment.
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