Our company mainly produces: Deep groove ball bearings, Tapered roller bearing, Spherical roller bearings, Self-aligning ball bearings, Pillow block bearings, Cylindrical roller bearings, Needle roller bearings, Auto Bearings, etc.
1. The main structural form of the outer spherical ball bearing
1. Top wire:
There are two types: UC type with wide inner ring and UB type with flat end of inner ring. Bearings with top screws are suitable for applications where the direction of rotation changes.
2. With eccentric sleeve:
There are two types: UEL type with wide inner ring and UE type with flat end of inner ring. Bearings with eccentric sleeves are suitable for applications where the direction of rotation does not change.
3. With adapter sleeve:
The UK+H type with wide inner ring and tapered inner diameter is suitable for occasions where the direction of rotation changes, the speed is high, and the operation is stable.
2. The main structural form of the bearing seat
The casting seat has various types such as vertical, square, rhombus, boss round, ring, slider seat and so on.
There are vertical, round, triangular, diamond and other types of stamping seats.
The same bearing with seat can be divided into various structural types according to the structural modification of its seat or the lubrication method and seal of the bearing.
3. Cage material
Basically the same as deep groove ball bearings.
4. Allowable inclination angle
The maximum allowable deflection between the outer spherical ball bearing and the central axis is generally 5°. If additional grease is required during use, the deflection angle is not allowed to exceed 2°.
5. Tolerance and Clearance
The tolerance of the inner ring of the outer spherical ball bearing is different from that of the deep groove ball bearing. Its value should meet the requirements of Table 1 or Table 2, the tolerance of the outer ring should meet the requirements of Table 3, and the dimensional tolerance of the eccentric sleeve should meet the requirements of Table 4. The radial clearance of spherical insert ball bearings is usually larger than that of deep groove ball bearings of the same size. The radial clearance value of spherical insert ball bearings with cylindrical bores shall comply with the provisions in Table 5. The radial clearance of insert spherical ball bearings with tapered bores The value should comply with the regulations in Table 6.
Table 1 Tolerance of Inner Ring of Cylindrical Bore
d(mm) | ∆dmp | Vdp | ∆Hs | ∆Bs | Kia | ||||
Exceed | Arrive | Upper deviation | Lower deviation | Maximum | Upper deviation | Lower deviation | Upper deviation | Lower deviation | Maximum |
10 | 18 | +15 | 0 | 10 | +100 | -100 | 0 | -120 | 12 |
Note: The inner hole can be plated to reduce the corrosion of the bearing during operation. The tolerances listed in the table are applicable to the surface of the inner hole with or without plating.
Table 2 Tolerance of the inner ring of the tapered hole
d(mm) | ∆dmp | ∆d1mp—∆dmp | |||
Exceed | Arrive | Upper deviation | Lower deviation | Upper deviation | Lower deviation |
10 | 18 | +27 | 0 | +18 | 0 |
Table 3 Outer ring tolerance
D(mm) | ∆Dmp | Kea | ||
Exceed | Arrive | Upper deviation | Lower deviation | Maximum |
30 | 50 | 0 | -11 | 20 |
Note: The Lower deviation value of ∆Dmp is not applicable within 1/4 width from the end face of the outer ring.
Table 4 Eccentric sleeve
Unit：μm
d(mm ) | ∆ds | ∆d2s | ∆Hs | ∆B2s | ∆A1s | ||||||
Exceed | Arrive | Upper deviation | Lower deviation | Upper deviation | Lower deviation | Upper deviation | Lower deviation | Upper deviation | Lower deviation | Upper deviation | Lower deviation |
10 | 35 | +250 | +25 | +300 | 0 | +100 | -100 | +270 | -270 | 0 | -180 |
Table 5 Cylindrical bore
Unit：μm
Bearing Nominal Inner Diameter | 2, 3 Series | ||||||
2 set | 0 set | 3 set | |||||
Exceed | Arrive | The smallest | Maximum | The smallest | Maximum | The smallest | Maximum |
10 | 18 | 3 | 18 | 10 | 25 | 18 | 33 |
Table 6 Tapered hole
Unit：μm
Bearing Nominal Inner Diameter | 2, 3 Series | ||||||
2 set | 0 set | 3 set | |||||
Exceed | Arrive | The smallest | Maximum | The smallest | Maximum | The smallest | Maximum |
10 | 18 | 10 | 25 | 18 | 33 | 25 | 45 |
6. Load capacity
The load capacity of the outer spherical ball bearing is basically the same as that of the deep groove ball bearing, and the calculation method of the equivalent load is also the same.
The load capacity of the outer spherical ball bearing with seat is also related to the type or fastening method of the seat. Cast outer spherical ball bearings can make full use of the bearing capacity of the bearing, but the axial load capacity depends on the degree of fastening between the inner ring of the bearing and the shaft. The axial load is not more than 20% of the rated dynamic load of Exceed. When the axial load is large, it is necessary to add a fastening device on the shaft, such as a shaft shoulder.
With top wire spherical ball bearing
Insert spherical ball bearing with adapter sleeve
Outer spherical ball bearing with vertical seat
Spherical ball bearing with vertical seat adapter sleeve
With square seat insert spherical ball bearing
Insert spherical ball bearing with rhombic seat
Spherical ball bearing with slider seat
Outer spherical ball bearing with boss round seat
The outer spherical ball bearing with seat is composed of an outer spherical ball bearing with seals on both sides and a cast (or stamped steel) bearing seat.
FAQ
What is your company's minimum order quantity (MOQ)?
We highly value flexibility in our cooperation. Standard bearing models are generally in stock. The MOQ depends on your standard oil clearance and manufacturing process. Currently, the minimum order quantity is usually 20-100 sets, depending on the size and specifications of the model. For bulk purchases or long-term cooperative clients, we offer more competitive prices, double the quality, and a flexible MOQ policy. If you have special requirements, please feel free to contact us, and we will do our best to meet your needs.
Do you accept OEM and customization?
Of course! OEM and customization services are one of our core strengths. We have a professional engineering design and R&D team and advanced high-precision CNC production equipment. We can produce non-standard bearings, bearings with special sizes, sealing structures, greases, or precision grades according to your drawings, samples, or technical requirements. Please provide your detailed requirements, and we will provide you with professional solutions and quotations.
Can I become your agent?
We warmly welcome distributors and agents from all over the world to join our network. We offer our agents a full range of manufactured products, more competitive prices, enhanced quality and technical support, market information, and comprehensive brand authorization. Agency eligibility is typically based on your market experience, sales capabilities, and business plan. If you are interested, please submit your company background and market plan through the "Contact Us" page, and our sales manager will discuss the details with you.
Can you provide samples free of charge?
We understand the importance of sample testing. For standard products, we can provide samples free of charge, but you will need to bear the shipping costs. For customized or high-value products, a certain cost fee will be charged for samples, which can be refunded when subsequent orders reach the agreed quantity. Our goal is to ensure your complete satisfaction with the products and to establish a long-term cooperative relationship.
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Keywords
Pillow Block Ball Bearing
Pillow Block Ball Bearing
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Phone：+8618365931361
WhatsApp：+8618365931361
E-Mail：zhengtong@cnztbearing.com
Add ：Baohua Street, Tianqiao District, Jinan City, Shandong Province
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