
Basic Parameters
UCPA: This is the specific type code for a pillow block spherical outer race ball bearing. Among them, "UC" indicates a spherical outer race ball bearing. "P" usually represents the type of bearing housing (different letters correspond to bearing housings of different shapes or structures). "A" may represent specific design or structural features. This kind of bearing is composed of a spherical outer race ball bearing and a bearing housing of a specific shape, which is convenient for installation and use in equipment.
Size series identification"2": In the UCPA series, the number "2" represents the size series of the bearing. Different size series correspond to different size parameters such as bearing inner diameter, outer diameter and width. Size series "2" has its specific size specification range.
Inner diameter size identification"08“: This part of the number represents the inner diameter size of the bearing. For UCPA208, its inner diameter size is usually 40mm (inner diameter size = code × 5, that is, 08×5 = 40mm). The inner diameter size is an important parameter when choosing a bearing. It determines whether the bearing can fit the corresponding shaft diameter.
Structural Features
Spherical Outside Surface Ball Bearing Core
- The core of this bearing is the spherical outside surface ball bearing. Its outer ring is a spherical outside surface. This design endows it with excellent self-aligning ability. During the operation of equipment, even if the shaft has a certain degree of deflection or misalignment, the spherical outside surface ball bearing can automatically adapt to this change, effectively reducing the vibration and noise of the equipment and ensuring the smooth operation of the equipment.
Mounted Design
- UCPA208 is equipped with a specific mount type, which can provide stable and firm support for the bearing. The design of the mount perfectly matches the bearing. During installation, it can fit well with the installation plane of the equipment to ensure the stable position of the bearing after installation. This mounted design greatly simplifies the installation process. Without the need for complex installation tools or professional skills, UCPA208 can be easily installed on the equipment, saving time and labor costs.
Internal Structure Details
- The rolling elements and raceways inside the bearing are precisely processed and fit very closely. At the same time, a good sealing structure can effectively prevent dust, impurities, and moisture from entering the bearing interior, which is crucial for prolonging the service life of the bearing and maintaining the stability of its performance.
Performance Advantages
Strong carrying capacity
- The UCPA208 bearing has excellent carrying capacity. Whether it is radial load or axial load, it can effectively bear it. In some equipment that needs to carry heavy loads, such as industrial conveying equipment and the auxiliary transmission part of heavy machinery, the UCPA208 can work reliably and provide a solid guarantee for the normal operation of the equipment.
High durability and long service life
- Made of high-quality bearing steel material and through strict processing technology and heat treatment procedures, it has high hardness and good wear resistance. During long-term use, it can effectively resist wear, prolong the service life of the bearing, reduce the number of equipment maintenance and costs, and improve the overall operating efficiency of the equipment.
Adapt to various working conditions
- Due to its good sealing performance and robust structural design, the UCPA208 bearing can adapt to many different working environments. Whether in a humid environment, a dusty workshop, or a chemically corrosive environment, it can maintain stable performance and work normally. This adaptability makes it widely applicable in various industrial fields.

Product Application
Industrial transmission equipment field
- In various types of industrial transmission equipment such as belt conveyors and chain conveyors, UCPA208 is often used to support the shaft of the transmission drum. In these devices, bearings need to bear various complex loads such as the weight of materials, the tension of conveyor belts, and the vibration generated during equipment operation. With its strong load-bearing capacity and good adaptability, UCPA208 can ensure the stable operation of transmission equipment and guarantee the efficient and accurate transportation of materials.
Heavy machinery auxiliary transmission part
- In the auxiliary transmission parts of some heavy machinery such as large cranes and excavators, the UCPA208 bearing also plays an important role. These parts usually need to bear huge forces and complex movements. UCPA208 can provide stable support to ensure smooth power transmission of machinery and improve the working efficiency and reliability of machinery.
Other industrial equipment
- In industrial fans, pump equipment, simple machine tools and other equipment, the UCPA208 bearing can also be well applied. For example, in industrial fans, it can support the fan shaft to ensure the stability of the fan when rotating at high speed; in pump equipment, it can bear the axial and radial forces generated by the rotation of the pump impeller to ensure the normal pumping or liquid transportation function of the pump.
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chain conveyer
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excavator
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pump equipment

Product Type
Unit No. |
d |
H1 |
A |
E |
P |
bolt size |
H3 |
H2 |
H |
B |
F |
bolt size |
UCPA201 |
12 |
30,2 |
76 |
52 |
40 |
M10 |
15 |
11 |
62 |
31 |
12,7 |
M10 |
UCPA202 |
15 |
30,2 |
76 |
52 |
40 |
M10 |
15 |
11 |
62 |
31 |
12,7 |
M10 |
UCPA203 |
17 |
30,2 |
76 |
52 |
40 |
M10 |
15 |
11 |
62 |
31 |
12,7 |
M10 |
UCPA204 |
20 |
30,2 |
76 |
52 |
40 |
M10 |
15 |
11 |
62 |
31 |
12,7 |
M10 |
UCPA205 |
25 |
36,5 |
84 |
56 |
38 |
M10 |
15 |
12 |
72 |
34,1 |
14,3 |
M10 |
UCPA206 |
30 |
42,9 |
94 |
66 |
50 |
M14 |
18 |
12 |
84 |
38,1 |
15,9 |
M14 |
UCPA207 |
35 |
47,6 |
110 |
80 |
55 |
M14 |
20 |
13 |
95 |
42,9 |
17,5 |
M14 |
UCPA208 |
40 |
49,2 |
116 |
84 |
58 |
M14 |
20 |
13 |
100 |
49,2 |
19 |
M14 |
UCPA209 |
45 |
54,2 |
120 |
90 |
60 |
M14 |
25 |
13 |
108 |
49,2 |
19 |
M14 |
UCPA210 |
50 |
57,2 |
130 |
94 |
64 |
M16 |
25 |
14 |
116 |
51,6 |
19 |
M16 |
UCPA211 |
55 |
63,5 |
140 |
104 |
66 |
M16 |
25 |
14 |
125 |
55,6 |
22,2 |
M16 |
UCPA212 |
60 |
69,9 |
150 |
114 |
68 |
M16 |
25 |
15 |
138 |
65,1 |
25,4 |
M16 |
UCPA213 |
65 |
76,2 |
160 |
124 |
70 |
M16 |
25 |
15 |
150 |
65,1 |
25,4 |
M16 |