Pillow Block Ball Bearing 40 mm Bore UCT204 Housing Bearing Shaft Bearing
The UCT204 consists of two main components:
-
Housing:
-
Made of cast iron or stamped steel, the housing provides a sturdy base for the bearing unit.
-
It features a four-bolt mounting design, which ensures secure attachment to flat surfaces and enhances stability.
-
The housing is designed to absorb vibrations and provide reliable support for the shaft.
-
Insert Bearing:
-
The insert bearing is typically a deep groove ball bearing (model 204).
-
Made from high-quality chrome steel (GCr15), it offers excellent durability, wear resistance, and load-carrying capacity.
-
The bearing is designed to handle both radial and axial loads, making it versatile for various applications.
-
Sealing:
-
The UCT204 can be equipped with rubber seals (2RS) or metal shields (ZZ) to protect the bearing from contaminants and retain lubrication.
-
Seals help extend the bearing’s lifespan by preventing dust, dirt, and moisture from entering.
-
Lubrication:
-
The bearing is pre-lubricated with high-quality grease, ensuring smooth operation and reducing the need for frequent maintenance.
-
Lubrication holes or fittings may be provided for easy re-lubrication in some designs.
2. Dimensions of UCT204 Bearing
The UCT204 follows standard dimensions (in millimeters):
| Parameter |
Dimension (mm) |
| Bore Diameter (d) |
20 mm |
| Outer Diameter (D) |
47 mm |
| Bearing Width (B) |
14 mm |
| Housing Hole Diameter |
20 mm |
| Overall Length (L) |
104 mm |
| Overall Width (W) |
80 mm |
| Overall Height (H) |
46 mm |
| Mounting Hole Spacing (A) |
70 mm |
| Mounting Hole Diameter (B) |
11 mm |
| Weight |
Approximately 0.9 kg |
3. Applications of UCT204 Bearing
The UCT204 is widely used in various industries due to its durability and versatility. Common applications include:
-
Conveyor Systems:
-
Agricultural Machinery:
-
Found in tractors, harvesters, and irrigation systems.
-
Withstands harsh conditions such as dust, dirt, and moisture.
-
Industrial Fans and Blowers:
-
Supports rotating shafts in fans and blowers, ensuring smooth and efficient operation.
-
Suitable for high-speed applications.
-
Food Processing Equipment:
-
Used in mixers, conveyors, and packaging machines.
-
Stainless steel variants are available for corrosion resistance in wet or hygienic environments.
-
Pumps and Compressors:
-
General Machinery:
![parameter.png]()
![image.png]()
UCT Series Pillow Block Ball Bearings Parameters
![image.png]()
Wide Application of Pillow Block Bearings
![带座å¤çé¢è½´æ¿ åºç¨2.jpg]()
Customization Welcomed:
-
We can printing your brand (logo,artwork)on the shield or laser engraving your brand on the shield.
-
We can custom your packaging according to your design.
-
All copyright owned by clients and we promised don't disclose any information.
Packing and Shipping:
-
The deep groove ball bearings will be securely packaged individually, or tube packing or packed as customization packing
-
Shipping method is negotiable.
![image.png]()
ABEC-1 Tolerance Class ABEC-1 (P0)
|
Inner Ring
|
Tolerance in um/s
|
|
d mm
|
Δdmp
|
9
|
Vdp²)0,1 Diameter Series
|
2,3,4
|
Vdmp
|
Kia
|
ΔBs
|
Vbs
|
|
over
|
including
|
high
|
low
|
max
|
max
|
max
|
high
|
low
|
max
|
|
1)0.6
|
2.5
|
0
|
-8
|
10
|
8
|
6
|
6
|
10
|
0
|
-40
|
12
|
|
2.5
|
10
|
0
|
-8
|
10
|
8
|
6
|
6
|
10
|
0
|
-120
|
15
|
|
10
|
18
|
0
|
-8
|
10
|
8
|
6
|
6
|
10
|
0
|
-120
|
20
|
|
18
|
30
|
0
|
-10
|
13
|
10
|
8
|
8
|
13
|
0
|
-120
|
20
|
|
30
|
50
|
0
|
-12
|
15
|
12
|
9
|
9
|
15
|
0
|
-120
|
20
|
|
50
|
80
|
0
|
-15
|
19
|
19
|
11
|
11
|
20
|
0
|
-150
|
25
|
|
Outer Ring
|
Tolerance in um/s
|
|
D mm
|
Δdmp
|
VDp2)4)Open Bearings Diameter Series
|
Capped Bearings2)3)
|
Vdmp
|
Kia
|
ΔBs
|
Vbs
|
|
9
|
0,1
|
2,3,4
|
2,3,4
|
|
over
|
including
|
high
|
low
|
max
|
max
|
max
|
high
|
low
|
max
|
|
1)2.5
|
6
|
0
|
-8
|
10
|
8
|
6
|
10
|
6
|
15
|
Identical to ΔBs and VBs of inner ring of same bearing
|
|
6
|
18
|
0
|
-8
|
10
|
8
|
6
|
10
|
6
|
15
|
|
18
|
30
|
0
|
-9
|
12
|
9
|
7
|
12
|
7
|
15
|
|
30
|
50
|
0
|
-11
|
14
|
11
|
8
|
16
|
8
|
20
|
|
50
|
80
|
0
|
-13
|
16
|
13
|
10
|
20
|
10
|
25
|
|
80
|
120
|
0
|
-15
|
19
|
19
|
11
|
26
|
11
|
35
|
|
120
|
150
|
0
|
-18
|
23
|
23
|
14
|
30
|
14
|
40
|
ABEC-3 Tolerance Class ABEC-3 (P6)
|
Inner Ring
|
Tolerance in um/s
|
|
d mm
|
Δdmp
|
9
|
Vdp²)0,1 Diameter Series
|
2,3,4
|
Vdmp
|
Kia
|
ΔBs
|
Vbs
|
|
over
|
including
|
high
|
low
|
max
|
max
|
max
|
high
|
low
|
max
|
|
11)0.6
|
2.5
|
0
|
-7
|
9
|
7
|
5
|
5
|
5
|
0
|
-40
|
12
|
|
2.5
|
10
|
0
|
-7
|
9
|
7
|
5
|
5
|
6
|
0
|
-120
|
15
|
|
10
|
18
|
0
|
-7
|
9
|
7
|
5
|
5
|
7
|
0
|
-120
|
20
|
|
18
|
30
|
0
|
-8
|
10
|
8
|
6
|
6
|
8
|
0
|
-120
|
20
|
|
30
|
50
|
0
|
-10
|
13
|
10
|
8
|
8
|
10
|
0
|
-120
|
20
|
|
50
|
80
|
0
|
-12
|
15
|
15
|
9
|
9
|
10
|
0
|
-150
|
25
|
|
Outer Ring
|
Tolerance in um/s
|
|
D mm
|
Δdmp
|
VDp2)4)Open Bearings Diameter Series
|
Capped Bearings2)3)
|
Vdmp
|
Kia
|
ΔBs
|
Vbs
|
|
9
|
0,1
|
2,3,4
|
2,3,4
|
|
over
|
including
|
high
|
low
|
max
|
max
|
max
|
high
|
low
|
max
|
|
1)2.5
|
6
|
0
|
-7
|
9
|
7
|
5
|
9
|
5
|
8
|
Identical to ΔBs and VBs of inner ring of same bearing
|
|
6
|
18
|
0
|
-7
|
9
|
7
|
5
|
9
|
5
|
8
|
|
18
|
30
|
0
|
-8
|
10
|
8
|
6
|
10
|
6
|
9
|
|
30
|
50
|
0
|
-9
|
11
|
9
|
7
|
13
|
7
|
10
|
|
50
|
80
|
0
|
-11
|
14
|
11
|
8
|
16
|
8
|
13
|
|
80
|
120
|
0
|
-13
|
16
|
16
|
10
|
20
|
10
|
18
|
|
120
|
150
|
0
|
-15
|
19
|
19
|
11
|
25
|
11
|
20
|
ABEC-5 Tolerance Class ABEC-5 (P5)
|
Inner Ring
|
Tolerance in um/s
|
|
d mm
|
Δdmp
|
Vdp²)Diameter Series
|
Vdmp
|
Kia
|
Sd
|
Sis3)
|
ΔBs
|
Vbs
|
|
9
|
0,1,2,3,4
|
|
over
|
including
|
high
|
low
|
max
|
3
|
max
|
max
|
max
|
High
|
Low
|
max
|
|
1)0.6
|
2.5
|
0
|
-5
|
5
|
4
|
3
|
4
|
7
|
7
|
0
|
-40
|
5
|
|
2.5
|
10
|
0
|
-5
|
5
|
4
|
3
|
4
|
7
|
7
|
0
|
-40
|
5
|
|
10
|
18
|
0
|
-5
|
5
|
4
|
3
|
4
|
7
|
7
|
0
|
-80
|
5
|
|
18
|
30
|
0
|
-6
|
6
|
5
|
3
|
4
|
8
|
8
|
0
|
-120
|
5
|
|
30
|
50
|
0
|
-8
|
8
|
6
|
4
|
5
|
8
|
8
|
0
|
-120
|
5
|
|
50
|
80
|
0
|
-9
|
9
|
7
|
5
|
5
|
8
|
8
|
0
|
-150
|
6
|
|
Outer Ring
|
Tolerance in um/s
|
|
D mm
|
Δdmp
|
Vdp²)Diameter Series
|
Vdmp
|
Kia
|
SD4) SD15)
|
Sea4)5)
|
ΔBs
|
Vbs
|
|
9
|
0,1,2,3,4
|
|
over
|
including
|
high
|
low
|
max
|
|
max
|
max
|
max
|
High
|
Low
|
max
|
|
1)2.5
|
6
|
0
|
-5
|
5
|
4
|
3
|
5
|
8
|
8
|
|
5
|
|
6
|
18
|
0
|
-5
|
5
|
4
|
3
|
5
|
8
|
8
|
5
|
|
18
|
30
|
0
|
-6
|
6
|
5
|
3
|
6
|
8
|
8
|
5
|
|
30
|
50
|
0
|
-7
|
7
|
5
|
4
|
7
|
8
|
8
|
5
|
|
50
|
80
|
0
|
-9
|
9
|
7
|
5
|
8
|
8
|
10
|
6
|
|
80
|
120
|
0
|
-10
|
10
|
8
|
5
|
10
|
9
|
11
|
8
|
|
120
|
150
|
0
|
-11
|
11
|
8
|
6
|
11
|
10
|
13
|
8
|
ABEC-7 Tolerance Class ABEC-7 (P4)
|
Inner Ring
|
Tolerance in um/s
|
|
d mm
|
Δdmp
|
Δds
|
Vdp²)Diameter Series
|
Vdmp
|
Kia
|
Sd
|
Sia
|
ΔBs
|
Vbs
|
|
7,8,9
|
1,7,2,3,4
|
|
over
|
including
|
high
|
low
|
high
|
low
|
max
|
max
|
max
|
max
|
max
|
High
|
low
|
Low
|
max
|
|
1)0.6
|
2.5
|
0
|
-4
|
0
|
-4
|
4
|
3
|
2
|
2.5
|
3
|
3
|
0
|
-40
|
-40
|
2.5
|
|
2.5
|
10
|
0
|
-4
|
0
|
-4
|
4
|
3
|
2
|
2.5
|
3
|
3
|
0
|
-40
|
-40
|
2.5
|
|
10
|
18
|
0
|
-4
|
0
|
-4
|
4
|
3
|
2
|
2.5
|
3
|
3
|
0
|
-80
|
-80
|
2.5
|
|
18
|
30
|
0
|
-5
|
0
|
-5
|
5
|
4
|
2.5
|
3
|
4
|
4
|
0
|
-120
|
-120
|
2.5
|
|
30
|
50
|
0
|
-6
|
0
|
-5
|
6
|
4
|
3
|
4
|
4
|
4
|
0
|
-120
|
-120
|
3
|
|
50
|
80
|
0
|
-7
|
0
|
-5
|
7
|
5
|
3.5
|
4
|
5
|
5
|
0
|
-150
|
-150
|
4
|
|
Outer Ring
|
Tolerance in um/s
|
|
D mm
|
Δdmp
|
Δds
|
Vdp²)Diameter Series
|
Vdmp
|
Kia
|
Sd
|
Sia
|
ΔBs
|
Vbs
|
|
7,8,9
|
1,7,2,3,4
|
|
over
|
including
|
high
|
low
|
high
|
low
|
max
|
max
|
max
|
max
|
max
|
High
|
low
|
max |
|
1)2.5
|
6
|
0
|
-4
|
0
|
-4
|
4
|
3
|
2
|
3
|
4
|
5
|
Identical to ΔBs and VBs of inner ring of same bearing
|
2.5
|
|
6
|
18
|
0
|
-4
|
0
|
-4
|
4
|
3
|
2
|
3
|
4
|
5
|
2.5
|
|
18
|
30
|
0
|
-5
|
0
|
-5
|
5
|
4
|
2.5
|
4
|
4
|
5
|
2.5
|
|
30
|
50
|
0
|
-6
|
0
|
-6
|
6
|
5
|
3
|
5
|
4
|
5
|
2.5
|
|
50
|
80
|
0
|
-7
|
0
|
-7
|
7
|
5
|
3.5
|
5
|
4
|
5
|
3
|
|
80
|
120
|
0
|
-8
|
0
|
-8
|
8
|
6
|
4
|
6
|
5
|
6
|
4
|
|
120
|
150
|
0
|
-9
|
0
|
-9
|
9
|
7
|
5
|
7
|
5
|
7
|
5
|
![noise.png]()
Tolerance Data for Vibration of Single Bearing
|
D
|
V
|
V1
|
V2
|
V3
|
V4
|
|
mm
|
Low
|
Medium
|
High
|
Low
|
Medium
|
High
|
Low
|
Medium
|
High
|
Low
|
Medium
|
High
|
Low
|
Medium
|
High
|
|
3,4
|
80
|
44
|
44
|
60
|
35
|
32
|
48
|
26
|
22
|
31
|
16
|
15
|
28
|
10
|
10
|
|
5,6
|
110
|
72
|
60
|
74
|
48
|
40
|
58
|
36
|
30
|
35
|
21
|
18
|
32
|
11
|
11
|
|
7,8,9
|
130
|
96
|
80
|
92
|
66
|
54
|
72
|
48
|
40
|
44
|
28
|
24
|
38
|
12
|
12
|
|
10,12
|
160
|
120
|
100
|
120
|
80
|
70
|
90
|
60
|
50
|
55
|
35
|
30
|
45
|
14
|
15
|
|
15
|
210
|
150
|
120
|
150
|
100
|
85
|
110
|
78
|
60
|
65
|
46
|
35
|
52
|
18
|
18
|
|
17
|
210
|
150
|
120
|
150
|
100
|
85
|
110
|
78
|
60
|
65
|
46
|
35
|
52
|
25
|
25
|
|
20
|
260
|
190
|
150
|
180
|
125
|
100
|
130
|
100
|
75
|
80
|
60
|
45
|
60
|
25
|
25
|
|
22,25
|
260
|
190
|
150
|
180
|
125
|
100
|
130
|
100
|
75
|
80
|
60
|
45
|
60
|
30
|
32
|
|
28
|
260
|
190
|
150
|
180
|
125
|
100
|
130
|
100
|
75
|
80
|
60
|
45
|
60
|
35
|
40
|
|
30,32
|
300
|
240
|
190
|
200
|
150
|
130
|
150
|
120
|
100
|
90
|
75
|
60
|
70
|
35
|
40
|
|
35
|
300
|
240
|
190
|
200
|
150
|
130
|
150
|
120
|
100
|
90
|
75
|
60
|
70
|
42
|
45
|
|
40
|
360
|
300
|
260
|
240
|
180
|
160
|
180
|
150
|
130
|
110
|
90
|
80
|
82
|
50
|
50
|
|
45
|
360
|
300
|
260
|
240
|
180
|
160
|
180
|
150
|
130
|
110
|
90
|
80
|
82
|
60
|
60
|
|
50
|
420
|
320
|
320
|
280
|
200
|
200
|
210
|
160
|
160
|
125
|
100
|
100
|
95
|
70
|
70
|
Maximum Vibration Acceleration of Single Bearing
|
D
|
Diameter Series(0)
|
Diameter Series(2) |
Diameter Series(3) |
|
mm
|
Z
|
Z1
|
Z2
|
Z3
|
Z
|
Z1
|
Z2
|
Z3
|
Z4
|
Z
|
Z1
|
Z2
|
Z3
|
Z4
|
|
3
|
35
|
34
|
32
|
28
|
36
|
35
|
32
|
30
|
-
|
37
|
36
|
33
|
31
|
-
|
|
4
|
35
|
34
|
32
|
28
|
36
|
35
|
32
|
30
|
-
|
37
|
36
|
33
|
31
|
-
|
|
5
|
37
|
36
|
34
|
30
|
38
|
37
|
34
|
32
|
-
|
39
|
37
|
35
|
33
|
-
|
|
6
|
37
|
36
|
34
|
30
|
38
|
37
|
34
|
32
|
-
|
39
|
37
|
35
|
33
|
-
|
|
7
|
39
|
38
|
35
|
31
|
40
|
38
|
36
|
34
|
-
|
-
|
-
|
-
|
-
|
-
|
|
8
|
39
|
38
|
35
|
31
|
40
|
38
|
36
|
34
|
-
|
-
|
-
|
-
|
-
|
-
|
|
9
|
41
|
40
|
36
|
32
|
42
|
40
|
37
|
35
|
-
|
-
|
-
|
-
|
-
|
-
|
|
10
|
43
|
42
|
38
|
33
|
44
|
42
|
39
|
35
|
30
|
37
|
44
|
40
|
37
|
32
|
|
12
|
44
|
43
|
39
|
34
|
45
|
43
|
39
|
35
|
30
|
47
|
45
|
40
|
37
|
32
|
|
15
|
45
|
44
|
40
|
35
|
46
|
44
|
41
|
36
|
31
|
48
|
46
|
42
|
38
|
33
|
|
17
|
46
|
44
|
40
|
35
|
47
|
45
|
41
|
36
|
31
|
49
|
47
|
42
|
38
|
33
|
|
20
|
47
|
45
|
41
|
36
|
48
|
46
|
42
|
38
|
33
|
50
|
48
|
43
|
39
|
34
|
|
22
|
47
|
45
|
41
|
36
|
48
|
46
|
42
|
38
|
33
|
50
|
48
|
43
|
39
|
34
|
|
25
|
48
|
46
|
42
|
38
|
49
|
47
|
43
|
40
|
36
|
51
|
49
|
44
|
41
|
37
|
|
28
|
49
|
47
|
43
|
39
|
50
|
48
|
44
|
41
|
37
|
52
|
50
|
45
|
42
|
38
|
|
30
|
49
|
47
|
43
|
39
|
50
|
48
|
44
|
41
|
37
|
52
|
50
|
45
|
42
|
38
|
|
32
|
50
|
48
|
44
|
40
|
51
|
49
|
45
|
42
|
38
|
53
|
51
|
46
|
43
|
39
|
|
35
|
51
|
49
|
45
|
41
|
52
|
50
|
46
|
43
|
39
|
54
|
52
|
47
|
44
|
40
|
|
40
|
53
|
51
|
46
|
42
|
54
|
52
|
47
|
44
|
40
|
56
|
54
|
49
|
45
|
41
|
|
45
|
55
|
53
|
48
|
45
|
56
|
54
|
49
|
46
|
43
|
58
|
56
|
51
|
47
|
44
|
|
50
|
57
|
54
|
50
|
47
|
58
|
55
|
51
|
48
|
45
|
60
|
57
|
53
|
49
|
46
|
|
55
|
59
|
56
|
52
|
49
|
60
|
57
|
53
|
50
|
47
|
62
|
59
|
54
|
51
|
48
|
|
60
|
61
|
58
|
54
|
51
|
62
|
59
|
54
|
51
|
48
|
|
61
|
56
|
53
|
50 |
![]()
|
Company brand KYODO YUSHI
|
Product
|
Base oil
|
Usage range
|
Characteristics
|
|
EXXON
|
Multemp SRL
|
Polyol ester+Diester
|
(-50,+150)
|
Excellent noise suppressantproperty and extended performance life
|
|
Multemp PS
|
Diester+Refined mineral oil
|
(-50,+130)
|
Excellent low temperature performance,has outstanding noise suppressant property
|
|
Multemp SM-B
|
Synthetic hydrocarbon
|
(-50,+200)
|
Long service life under high temperature,Excellent low temperature performance,has high speed operation,low noise property
|
|
Multemp ET-K
|
SyntheticEther +Polyol ester
|
(-40≥,+200)
|
Has more extended life under high operating temperature condition
|
|
MOBILE
|
Polyrex EM
|
Mineral grease
|
(-40,+180)
|
Long life and high temperature
|
|
Beacon325
|
Synthetic grease
|
(-54,+150)
|
General purpose grease
|
|
Andok C
|
Channeling petroleum grease
|
(-27,+120)
|
Smooth running,long life with minimum migration
|
|
CHEVRON
|
Mobil 28(MIL-G-81322)
|
Synthetic hydrocarbon
|
(-54,+177)
|
Wide temperature range,good low temperature torque
|
|
Mobil HP
|
Lithium complex
|
(-30,+110)
|
Vibration,moderate speed and good corrosion resistance
|
|
SHELL
|
SRI-2
|
Mineral grease
|
(-30,+180)
|
High temperature range,good water resistance
|
|
DUPONT
|
Alvania 2
|
Mineral grease
|
(-35,+120)
|
Long life and high temperature
|
|
RLQ #2
|
Mineral grease
|
(-50,+150)
|
Low noise,high speed and high temperature
|
|
KLUBER
|
ASONIC
|
Synthetic hydrocarbon
|
(-50,+140)
|
High temperature stability with good lubricity properties
|
|
JINZHI
|
HANGU 2#
|
Mineral grease
|
(-20,+120)
|
Low noise
|
|
HTHS
|
Mineral grease
|
(-40,+180)
|
High speed,low temperature,low torque and low noise
|
![04Clearance-Parameters 04Clearance-Parameters]()
The Radial Clearance of Bearings with Electric Motor Quality
|
Bore
|
CM
|
|
Over
|
Including
|
Min
|
Max
|
|
mm
|
inch
|
mm
|
inch
|
um
|
um
|
|
10
|
0.3937
|
18
|
0.7087
|
4
|
11
|
|
18
|
0.7087
|
24
|
0.9449
|
5
|
12
|
|
24
|
0.9449
|
30
|
1.1811
|
5
|
12
|
|
30
|
1.1811
|
40
|
1.5748
|
9
|
17
|
|
40
|
1.5748
|
50
|
1.9685
|
9
|
17
|
|
50
|
1.9685
|
65
|
2.5591
|
12
|
22
|
|
Datas of the Mini-deep Groove Bearings Under No Load As Follows:
|
Tolerance in um
|
|
Bore
|
Inch R Series
|
C2
|
NORMAL
|
C3
|
C4
|
|
Over
|
Including
|
|
mm
|
inch
|
mm
|
inch
|
min
|
max
|
min
|
max
|
min
|
max
|
min
|
|
2.5
|
0.0984
|
10
|
0.3937
|
R2-R6
|
0
|
7
|
2
|
13
|
8
|
23
|
14
|
|
10
|
0.3937
|
18
|
0.7087
|
R8-R10
|
0
|
9
|
3
|
18
|
11
|
25
|
18
|
|
18
|
0.7087
|
24
|
0.9449
|
R12-R14
|
0
|
10
|
5
|
20
|
13
|
58
|
20
|
|
24
|
0.9449
|
30
|
1.1811
|
R16-18
|
1
|
11
|
5
|
20
|
13
|
28
|
23
|
|
30
|
1.1811
|
40
|
1.5748
|
R20-R24
|
1
|
11
|
6
|
20
|
15
|
33
|
28
|
|
40
|
1.5748
|
50
|
1.9685
|
|
1
|
11
|
6
|
23
|
18
|
36
|
30
|
|
50
|
1.9685
|
65
|
2.5591
|
|
1
|
12
|
8
|
28
|
23
|
43
|
38
|
|
Datas of the Mini-deep Groove Bearings Under No Load As Follows:
|
Tolerance in um
|
|
Clearance Code
|
MC1
|
MC2
|
MC3
|
MC4
|
MC5
|
|
Clearance
|
min
|
max
|
min
|
max
|
min
|
max
|
min
|
max
|
min
|
max
|
|
1
|
6
|
4
|
9
|
6
|
11
|
9
|
14
|
15
|
22
|