Pillow blocks can refer to a variety of bearing styles such as single row ball bearings, double row ball bearings, spherical roller bearings, taper roller bearings, etc. A unit is typically a reference for a 1-piece housing as opposed to a split housing. For simplicity, this article will focus on single row ball bearing units.
“A basic pillow block bearing unit is typically an insert bearing which is based on a sealed deep groove ball bearing and a one piece housing.” Joshua Goldman, Applications Engineer for SKF USA says. These units consist of:
*an insert bearing which is based on a sealed single row deep groove ball bearing in the 62 series with a spherical (convex) outside diameter surface and an extended inner ring:
*a one-piece housing made of several different material options which include but are not limited to cast iron, cast stainless steel, and composite. The housing has a correspondingly sphered but concave bore.
Pillow block bearing size chart
|
Unit No.
|
Shaft Dia
|
Dimensions (mm)
|
Bolt Size
(mm)
|
Weight
|
|
d
|
H
|
L
|
J
|
A
|
N
|
N1
|
H1
|
Ho
|
B
|
S
|
A3
|
(kg)
|
|
(in)
|
(mm)
|
|
UCP201
|
|
12
|
30.2
|
125
|
95
|
32
|
13
|
18
|
13
|
57
|
27.4
|
11.5
|
-
|
M10
|
0.72
|
|
UCP202
|
|
15
|
30.2
|
125
|
95
|
32
|
13
|
18
|
13
|
57
|
27.4
|
11.5
|
-
|
M10
|
0.66
|
|
UCP203
|
|
17
|
30.2
|
125
|
95
|
32
|
13
|
18
|
13
|
57
|
27.4
|
11.5
|
-
|
M10
|
0.66
|
|
UCP201
|
|
12
|
30.2
|
127
|
95
|
38
|
13
|
19
|
14
|
61
|
31
|
12.7
|
-
|
M10
|
0.76
|
|
UCP201-8
|
1/2
|
|
30.2
|
127
|
95
|
38
|
13
|
19
|
14
|
61
|
31
|
12.7
|
-
|
M10
|
0.76
|
|
UCP202
|
|
15
|
30.2
|
127
|
95
|
38
|
13
|
19
|
14
|
61
|
31
|
12.7
|
-
|
M10
|
0.74
|
|
UCP202-9
|
9/16
|
|
30.2
|
127
|
95
|
38
|
13
|
19
|
14
|
61
|
31
|
12.7
|
-
|
M10
|
0.74
|
|
UCP202-10
|
5/8
|
|
30.2
|
127
|
95
|
38
|
13
|
19
|
14
|
61
|
31
|
12.7
|
-
|
M10
|
0.74
|
|
UCP203
|
|
17
|
30.2
|
127
|
95
|
38
|
13
|
19
|
14
|
61
|
31
|
12.7
|
-
|
M10
|
0.72
|
|
UCP203-11
|
11/16
|
|
30.2
|
127
|
95
|
38
|
13
|
19
|
14
|
61
|
31
|
12.7
|
-
|
M10
|
0.72
|
|
UCP204
|
|
20
|
33.3
|
127
|
95
|
38
|
13
|
19
|
14
|
64
|
31
|
12.7
|
46.4
|
M10
|
0.70
|
|
UCP204-12
|
3/4
|
|
33.3
|
127
|
95
|
38
|
13
|
19
|
14
|
64
|
31
|
12.7
|
46.4
|
M10
|
0.70
|
|
UCP205
|
|
25
|
36.5
|
140
|
105
|
38
|
13
|
19
|
15
|
71
|
34.1
|
14.3
|
48
|
M10
|
0.76
|
|
UCP205-14
|
7/8
|
|
36.5
|
140
|
105
|
38
|
13
|
19
|
15
|
71
|
34.1
|
14.3
|
48
|
M10
|
0.76
|
|
UCP205-15
|
15/16
|
|
36.5
|
140
|
105
|
38
|
13
|
19
|
15
|
71
|
34.1
|
14.3
|
48
|
M10
|
0.76
|
|
UCP205-16
|
1
|
|
36.5
|
140
|
105
|
38
|
13
|
19
|
15
|
71
|
34.1
|
14.3
|
48
|
M10
|
0.76
|
|
UCP206
|
|
30
|
42.9
|
160
|
121
|
44
|
17
|
21
|
16
|
82
|
38.1
|
15.9
|
52
|
M14
|
1.25
|
|
UCP206-17
|
1-1/16
|
|
42.9
|
160
|
121
|
44
|
17
|
21
|
16
|
82
|
38.1
|
15.9
|
52
|
M14
|
1.25
|
|
UCP206-18
|
1-1/8
|
|
42.9
|
160
|
121
|
44
|
17
|
21
|
16
|
82
|
38.1
|
15.9
|
52
|
M14
|
1.25
|
|
UCP206-19
|
1-3/16
|
|
42.9
|
160
|
121
|
44
|
17
|
21
|
16
|
82
|
38.1
|
15.9
|
52
|
M14
|
1.25
|
|
UCP206-20
|
1-1/4
|
|
42.9
|
160
|
121
|
44
|
17
|
21
|
16
|
82
|
38.1
|
15.9
|
52
|
M14
|
1.25
|
|
UCP207
|
|
35
|
47.6
|
167
|
126
|
48
|
17
|
21
|
17
|
92
|
42.9
|
17.5
|
59
|
M14
|
1.55
|
|
UCP207-20
|
1-1/4
|
|
47.6
|
167
|
126
|
48
|
17
|
21
|
17
|
92
|
42.9
|
17.5
|
59
|
M14
|
1.55
|
|
UCP207-21
|
1-5/16
|
|
47.6
|
167
|
126
|
48
|
17
|
21
|
17
|
92
|
42.9
|
17.5
|
59
|
M14
|
1.55
|
|
UCP207-22
|
1-3/8
|
|
47.6
|
167
|
126
|
48
|
17
|
21
|
17
|
92
|
42.9
|
17.5
|
59
|
M14
|
1.55
|
|
UCP207-23
|
1-7/16
|
|
47.6
|
167
|
126
|
48
|
17
|
21
|
17
|
92
|
42.9
|
17.5
|
59
|
M14
|
1.55
|
|
UCP208
|
|
40
|
49.2
|
180
|
137
|
52
|
17
|
21
|
18
|
99
|
49.2
|
19
|
68.2
|
M14
|
1.90
|
|
UCP208-24
|
1-1/2
|
|
49.2
|
180
|
137
|
52
|
17
|
21
|
18
|
99
|
49.2
|
19
|
68.2
|
M14
|
1.90
|
|
UCP208-25
|
1-9/16
|
|
49.2
|
180
|
137
|
52
|
17
|
21
|
18
|
99
|
49.2
|
19
|
68.2
|
M14
|
1.90
|
|
UCP209
|
|
45
|
54
|
190
|
146
|
54
|
17
|
21
|
20
|
106
|
49.2
|
19
|
70
|
M14
|
2.20
|
|
UCP209-26
|
1-5/8
|
|
54
|
190
|
146
|
54
|
17
|
21
|
20
|
106
|
49.2
|
19
|
70
|
M14
|
2.20
|
|
UCP209-27
|
1-11/16
|
|
54
|
190
|
146
|
54
|
17
|
21
|
20
|
106
|
49.2
|
19
|
70
|
M14
|
2.20
|
|
UCP209-28
|
1-3/4
|
|
54
|
190
|
146
|
54
|
17
|
21
|
20
|
106
|
49.2
|
19
|
70
|
M14
|
2.20
|
|
UCP210
|
|
50
|
57.2
|
206
|
159
|
60
|
20
|
25
|
21
|
114
|
51.6
|
19
|
76
|
M16
|
2.75
|
|
UCP210-30
|
1-7/8
|
|
57.2
|
206
|
159
|
60
|
20
|
25
|
21
|
114
|
51.6
|
19
|
76
|
M16
|
2.75
|
|
UCP210-31
|
1-15/16
|
|
57.2
|
206
|
159
|
60
|
20
|
25
|
21
|
114
|
51.6
|
19
|
76
|
M16
|
2.75
|
|
UCP210-32
|
2
|
|
57.2
|
206
|
159
|
60
|
20
|
25
|
21
|
114
|
51.6
|
19
|
76
|
M16
|
2.75
|
|
UCP211
|
|
55
|
63.5
|
217
|
172
|
60
|
20
|
25
|
23
|
125
|
55.6
|
22.2
|
76
|
M16
|
3.30
|
|
UCP211-32
|
2
|
|
63.5
|
217
|
172
|
60
|
20
|
25
|
23
|
125
|
55.6
|
22.2
|
76
|
M16
|
3.30
|
|
UCP211-34
|
2-1/8
|
|
63.5
|
217
|
172
|
60
|
20
|
25
|
23
|
125
|
55.6
|
22.2
|
76
|
M16
|
3.30
|
|
UCP211-35
|
2-3/16
|
|
63.5
|
217
|
172
|
60
|
20
|
25
|
23
|
125
|
55.6
|
22.2
|
76
|
M16
|
3.30
|
|
UCP212
|
|
60
|
69.9
|
238
|
186
|
70
|
20
|
25
|
24
|
137
|
65.1
|
25.4
|
89
|
M16
|
4.70
|
|
UCP212-36
|
2-1/4
|
|
69.9
|
238
|
186
|
70
|
20
|
25
|
24
|
137
|
65.1
|
25.4
|
89
|
M16
|
4.70
|
|
UCP212-38
|
2-3/8
|
|
69.9
|
238
|
186
|
70
|
20
|
25
|
24
|
137
|
65.1
|
25.4
|
89
|
M16
|
4.70
|
|
UCP212-39
|
2-7/16
|
|
69.9
|
238
|
186
|
70
|
20
|
25
|
24
|
137
|
65.1
|
25.4
|
89
|
M16
|
4.70
|
|
UCP213
|
|
65
|
76.2
|
262
|
203
|
70
|
25
|
30
|
26
|
149
|
65.1
|
25.4
|
89
|
M20
|
5.60
|
|
UCP213-40
|
2-1/2
|
|
76.2
|
262
|
203
|
70
|
25
|
30
|
26
|
149
|
65.1
|
25.4
|
89
|
M20
|
5.60
|
|
UCP214
|
|
70
|
79.4
|
266
|
210
|
72
|
25
|
30
|
27
|
155
|
74.6
|
30.2
|
98
|
M20
|
6.60
|
|
UCP214-44
|
2-3/4
|
|
79.4
|
266
|
210
|
72
|
25
|
30
|
27
|
155
|
74.6
|
30.2
|
98
|
M20
|
6.60
|
|
UCP215
|
|
75
|
82.6
|
274
|
217
|
74
|
25
|
30
|
28
|
162
|
77.8
|
33.3
|
97
|
M20
|
7.30
|
|
UCP215-47
|
2-15/16
|
|
82.6
|
274
|
217
|
74
|
25
|
30
|
28
|
162
|
77.8
|
33.3
|
97
|
M20
|
7.30
|
|
UCP215-48
|
3
|
|
82.6
|
274
|
217
|
74
|
25
|
30
|
28
|
162
|
77.8
|
33.3
|
97
|
M20
|
7.30
|
|
UCP216
|
|
80
|
88.9
|
292
|
232
|
78
|
25
|
30
|
30
|
174
|
82.6
|
33.3
|
110
|
M20
|
9.00
|
|
UCP217
|
|
85
|
95.2
|
310
|
247
|
83
|
25
|
28
|
32
|
186
|
85.7
|
34.1
|
114.2
|
M20
|
10.80
|
|
UCP217-52
|
3-1/4
|
|
95.2
|
310
|
247
|
83
|
25
|
28
|
32
|
186
|
85.7
|
34.1
|
114.2
|
M20
|
10.80
|
|
UCP218
|
|
90
|
101.6
|
326
|
262
|
88
|
27
|
30
|
33
|
198
|
96
|
39.7
|
124
|
M22
|
13.00
|
|
UCP218-56
|
3-1/2
|
|
101.6
|
326
|
262
|
88
|
27
|
30
|
33
|
198
|
96
|
39.7
|
124
|
M22
|
13.00
|
|
UCP220
|
|
100
|
115
|
380
|
305
|
95
|
30
|
36
|
40
|
225
|
108
|
42
|
-
|
M24
|
16.00
|
