Product Description
Our Bearing Advantage:
1. Free Sample bearing;
2.ISO Standard;
3. Bearing Small order accepted;
4. In Stock bearing;
5. OEM/ODM bearing service;
6. Professional: more than 20 years of manufacture bearing;
7. Customized bearing, Customer’s bearing drawing, or samples accepted;
8. Competitive price bearing: factory outlet.
OEM All Brand Bearing
1. deep groove ball bearing 6000,6200,6300,6400,61800,61900,Z,RS,ZZ,2RS
2. spherical roller bearing 22200,22300,23000,24000,23100,24100,CA,CC,E,MB, MA ,W33
3. cylindrical roller bearing N,NU,NJ,NN,NUP,E,ECP,ECM,ECJ
4. taper roller bearing 35710,30300,32200,32300,31300,32000
5. Aligning ball bearing 1200,1300,2200,2300,
6. needle roller bearing NA,NAV,NK,NKI,RNA,NK,RNAV,ZKLF,ZKLN,ZARF,ZARN
7. thrust ball bearing 51100,51200,51300,51400,E,M
8. angular contact ball bearing7000,7100,7200,7300,AC,BECBM,C
9. spherical plain bearing GE, GEG,GEEW, U,UC, UG,GX,GAC,SA,SABP
10.Wheel hub bearing /ceramic bearing/plastic bearing/lazy susan bearing
Our packing:
* Industrial pakage+outer carton+pallets
* single box+outer carton+pallets
* Tube package+middle box+outer carton+pallets
* According to your requirements
Product Description
KOYO CZPT CZPT UC Series Insert Roller Ball Bearings for Spare Parts
Good quality ball bearings UC insert bearing
1.Prodcut name : UC ball bearing
2.Broe diameter:20mm-200mm
3.Precision level:P5,P6,P0
4.Sealing form:OPEN,Z,ZZ,RS,2RS,2RZ.N
5.Package:Wooden packing or pallet packing or according to the customer’s requirements.
6.OEM is available
Parameters of Bearing
More details of UC211-34 UC, UG, UCP, UCFL, UCF, SA, SB, SN, UT Pillow Block Bearing/Insert Bearing
| BearingUint No. | Shaft Dia d | Dimensinons(mm) | Bolt Used | Bearing No. | Housing No. | Housing Wt (kg) |
|||||||||||||
| h | a | e | b | S2 | S1 | g | w | t | Z | Bi | n | (mm) | (in) | ||||||
| (in) | (mm) | ||||||||||||||||||
| UCP201-8 | 1/2 | 30.2 | 127 | 95 | 38 | 19 | 13 | 14 | 62 | 2 | 51 | 31 | 12.7 | M10 | 3/8 | UC201-8 | P203 | 0.33 | |
| UCP202-9 | 9/16 | UC202-9 | |||||||||||||||||
| UCP202-10 | 5/8 | UC202-10 | |||||||||||||||||
| UCP203-11 | 11/16 | UC203-11 | |||||||||||||||||
| UCP201 | 12 | UC201 | |||||||||||||||||
| UCP202 | 15 | UC202 | |||||||||||||||||
| UCP203 | 17 | UC203 | |||||||||||||||||
| UCP204-12 | 3/4 | 33.3 | 127 | 95 | 38 | 19 | 13 | 14 | 65 | 2 | 51 | 31 | 12.7 | M10 | 3/8 | UC204-12 | P204 | 0.46 | |
| UCP204 | 20 | UC204 | |||||||||||||||||
| UCP205-13 | 13/16 | 25 | 36.5 | 140 | 105 | 38 | 19 | 13 | 15 | 71 | 2 | 57 | 34.1 | 14.3 | M10 | 3/8 | UC205-13 | P205 | 0.60 |
| UCP205-14 | 7/8 | UC205-14 | |||||||||||||||||
| UCP205-15 | 15/16 | UC205-15 | |||||||||||||||||
| UCP205-16 | 1 | UC205-16 | |||||||||||||||||
| UCP205 | UC205 | ||||||||||||||||||
| UCP206-17 | 1-1/16 | 30 | 42.9 | 165 | 121 | 48 | 21 | 17 | 17 | 83 | 2 | 62 | 38.1 | 15.9 | M14 | 1/2 | UC206-17 | P206 | 0.97 |
| UCP206-18 | 1-1/8 | UC206-18 | |||||||||||||||||
| UCP206-19 | 1-3/16 | UC206-19 | |||||||||||||||||
| UCP206-20 | 1-1/4 | UC206-20 | |||||||||||||||||
| UCP206 | UC206 | ||||||||||||||||||
| UCP207-20 | 1-1/4 | 35 | 47.6 | 167 | 127 | 48 | 21 | 17 | 18 | 93 | 3 | 72 | 42.9 | 17.5 | M14 | 1/2 | UC207-20 | P207 | 1.00 |
| UCP207-21 | 1-5/16 | UC207-21 | |||||||||||||||||
| UCP207-22 | 1-3/8 | UC207-22 | |||||||||||||||||
| UCP207-23 | 1-7/16 | UC207-23 | |||||||||||||||||
| UCP207 | UC207 | ||||||||||||||||||
| UCP208-24 | 1-1/2 | 40 | 49.2 | 184 | 137 | 54 | 21 | 17 | 18 | 98 | 3 | 82 | 49.2 | 19.0 | M14 | 1/2 | UC208-24 | P208 | 1.30 |
| UCP208-25 | 1-9/16 | UC208-25 | |||||||||||||||||
| UCP208 | UC208 | ||||||||||||||||||
| UCP209-26 | 1-5/8 | 45 | 54 | 190 | 146 | 54 | 21 | 17 | 20 | 106 | 3 | 82 | 49.2 | 19.0 | M14 | 1/2 | UC209-26 | P209 | 1.40 |
| UCP209-27 | 1-11/16 | UC209-27 | |||||||||||||||||
| UCP209-28 | 1-3/4 | UC209-28 | |||||||||||||||||
| UCP209 | UC209 | ||||||||||||||||||
| UCP210-29 | 1-13/16 | 50 | 57.2 | 206 | 159 | 60 | 25 | 20 | 21 | 114 | 3 | 87 | 51.6 | 19.0 | M16 | 5/8 | UC210-29 | P210 | 1.83 |
| UCP210-30 | 1-7/8 | UC210-30 | |||||||||||||||||
| UCP210-31 | 1-15/16 | UC210-31 | |||||||||||||||||
| UCP210-32 | 2 | UC210-32 | |||||||||||||||||
| UCP210 | UC210 | ||||||||||||||||||
| UCP211-32 | 2 | 55 | 63.5 | 219 | 171 | 60 | 25 | 20 | 23 | 126 | 4 | 92 | 55.6 | 22.2 | M16 | 5/8 | UC211-32 | P211 | 2.4 |
| UCP211-33 | 2-1/16 | UC211-33 | |||||||||||||||||
| UCP211-34 | 2-1/8 | UC211-34 | |||||||||||||||||
| UCP211-35 | 2-3/16 | UC211-35 | |||||||||||||||||
| UCP211 | UC211 | ||||||||||||||||||
| UCP212-36 | 2-1/4 | 60 | 69.8 | 241 | 184 | 70 | 25 | 20 | 25 | 138 | 4 | 102 | 65.1 | 25.4 | M16 | 5/8 | UC212-36 | P212 | 2.8 |
| UCP212-37 | 2-5/16 | UC212-37 | |||||||||||||||||
| UCP212-38 | 2-3/8 | UC212-38 | |||||||||||||||||
| UCP212-39 | 2-7/16 | UC212-39 | |||||||||||||||||
| UCP212 | UC212 | ||||||||||||||||||
| UCP213-40 | 2-1/2 | 65 | 76.2 | 265 | 203 | 70 | 29 | 25 | 27 | 151 | 4 | 107 | 65.1 | 25.4 | M20 | 3/4 | UC213-40 | P213 | 3.5 |
| UCP213-41 | 2-9/16 | UC213-41 | |||||||||||||||||
| UCP213 | UC213 | ||||||||||||||||||
| UCP214-42 | 2-5/8 | 70 | 79.4 | 266 | 210 | 72 | 31 | 25 | 27 | 157 | 74.6 | 30.2 | M20 | 3/4 | UC214-42 | P214 | 4.45 | ||
| UCP214-43 | 2-11/16 | UC214-43 | |||||||||||||||||
| UCP214-44 | 2-3/4 | UC214-44 | |||||||||||||||||
| UCP214 | UC214 | ||||||||||||||||||
| UCP215-45 | 2-13/16 | 75 | 82.6 | 275 | 217 | 74 | 31 | 25 | 28 | 163 | 77.8 | 33.3 | M20 | 3/4 | UC215-45 | P215 | 4.9 | ||
| UCP215-46 | 2-7/8 | UC215-46 | |||||||||||||||||
| UCP215-47 | 2-15/16 | UC215-47 | |||||||||||||||||
| UCP215-48 | 3 | UC215-48 | |||||||||||||||||
| UCP215 | UC215 | ||||||||||||||||||
| UCP216-50 | 3-1/8 | 80 | 88.9 | 292 | 232 | 78 | 31 | 25 | 30 | 175 | 82.6 | 33.3 | M20 | 3/4 | UC216-50 | P216 | 5.8 | ||
| UCP216 | UC216 | ||||||||||||||||||
| UCP217-52 | 3-1/4 | 85 | 95.2 | 310 | 247 | 83 | 31 | 25 | 32 | 187 | 85.7 | 34.1 | M20 | 3/4 | UC217-52 | P217 | 6.9 | ||
| UCP217 | UC217 | ||||||||||||||||||
| UCP218-56 | 3-1/2 | 90 | 101.6 | 327 | 262 | 88 | 33 | 27 | 33 | 200 | 96.0 | 39.7 | M22 | 7/8 | UC218-56 | P218 | 8.10 | ||
| Bearing Unit NO. |
Shaft Dia d | Dimensions(mm) | Bolt Used | Bearing No. | Housing No. | Housing Wt (kg) |
|||||||||||
| (in) | (mm) | h | a | e | b | s2 | s1 | g | w | Bi | n | (in) | (mm) | ||||
| UCP305-14 UCP305-15 UCP305-16 UCP305 |
7/8 15/16 1 |
25 | 45 | 175 | 132 | 45 | 20 | 17 | 15 | 85 | 38 | 15 | 1/2 | M14 | UC305-14 UC305-15 UC305-16 UC305 |
P305 | 0.90 |
| UCP306-18 UCP306-19 UCP306 |
1-1/8 1-3/16 |
30 | 50 | 180 | 140 | 50 | 20 | 17 | 18 | 95 | 43 | 17 | 1/2 | M14 | UC306-18 UC306-19 UC306 |
P306 | 1.10 |
| UCP307-20 UCP307-21 UCP307-22 UCP307-23 UCP307 |
1-1/4 1-5/16 1-3/8 1-7/16 |
35 | 56 | 210 | 160 | 56 | 25 | 17 | 20 | 106 | 48 | 19 | 1/2 | M14 | UC307-20 UC307-21 UC307-22 UC307-23 UC307 |
P307 | 1.95 |
| UCP308-24 UCP308-25 UCP308 |
1-1/2 1-9/16 |
40 | 60 | 220 | 170 | 60 | 27 | 17 | 22 | 116 | 52 | 19 | 1/2 | M14 | UC308-24 UC308-25 UC308 |
P308 | 2.20 |
| UCP309-26 UCP309-27 UCP309-28 UCP309 |
1-5/8 1-11/16 1-3/4 |
45 | 67 | 245 | 190 | 67 | 30 | 20 | 24 | 129 | 57 | 22 | 5/8 | M16 | UC309-26 UC309-27 UC309-28 UC309 |
P309 | 3.30 |
| UCP310-30 UCP310-31 UCP310 |
1-7/8 1-15/16 |
50 | 75 | 275 | 212 | 75 | 35 | 20 | 27 | 143 | 61 | 22 | 5/8 | M16 | UC310-30 UC310-31 UC310 |
P310 | 4.80 |
| UCP311-32 UCP311-34 UCP311-35 UCP311 |
2 2-3/8 2-3/16 |
55 | 80 | 310 | 236 | 80 | 38 | 20 | 30 | 154 | 66 | 25 | 5/8 | M16 | UC311-32 UC311-34 UC311-35 UC311 |
P311 | 5.30 |
| UCP312-36 UCP312-38 UCP312-39 UCP312 |
2-1/4 2-3/8 2-7/16 |
60 | 85 | 330 | 250 | 85 | 38 | 25 | 32 | 165 | 71 | 26 | 3/4 | M20 | UC312-36 UC312-38 UC312-39 UC312 |
P312 | 6.30 |
| UCP313-40 UCP313 |
2-1/2 | 65 | 90 | 340 | 260 | 90 | 38 | 25 | 33 | 176 | 75 | 30 | 3/4 | M20 | UC313-40 UC313 |
P313 | 8.00 |
| UCP314-44 UCP314 |
2-3/4 | 70 | 95 | 360 | 280 | 90 | 40 | 27 | 35 | 187 | 78 | 33 | 7/8 | M22 | UC314-44 UC314 |
P314 | 8.30 |
| UCP315-48 UCP315 |
3 | 75 | 100 | 380 | 290 | 100 | 40 | 27 | 35 | 198 | 82 | 32 | 7/8 | M22 | UC315-48 UC315 |
P315 | 9.50 |
| UCP316-50 UCP316 |
3-1/8 | 80 | 106 | 400 | 300 | 110 | 40 | 27 | 40 | 210 | 86 | 34 | 7/8 | M22 | UC316-50 UC315 |
P316 | 12.50 |
| UCP317-52 UCP317 |
3-1/4 | 85 | 112 | 420 | 320 | 110 | 45 | 33 | 40 | 220 | 96 | 40 | 1 | M27 | UC317-52 UC317 |
P317 | 14.50 |
| UCP318-56 UCP318 |
3-1/2 | 90 | 118 | 430 | 330 | 110 | 45 | 33 | 45 | 235 | 96 | 40 | 1 | M27 | UC318-56 UC318 |
P318 | 20.40 |
| UCP319-60 UCP319 |
3-3/4 | 95 | 125 | 470 | 360 | 120 | 50 | 36 | 45 | 250 | 103 | 41 | 1-1/8 | M30 | UC319-60 UC319 |
P319 | 22.30 |
| UCP320-64 UCP320 |
4 | 100 | 140 | 490 | 380 | 120 | 50 | 36 | 50 | 275 | 108 | 42 | 1-1/8 | M30 | UC320-64 UC320 |
P320 | 25.00 |
| UCP321 | 105 | 140 | 490 | 380 | 120 | 50 | 36 | 50 | 280 | 112 | 44 | 1-1/8 | M30 | UC321 | P321 | 24.00 | |
| UCP322 | 110 | 150 | 520 | 400 | 140 | 55 | 40 | 55 | 300 | 117 | 46 | M33 | UC322 | P322 | 27.50 | ||
| UCP324 | 120 | 160 | 570 | 450 | 140 | 55 | 40 | 65 | 320 | 126 | 51 | M33 | UC324 | P324 | 32.30 | ||
| UCP326 | 130 | 180 | 600 | 480 | 140 | 55 | 40 | 75 | 355 | 135 | 54 | M33 | UC326 | P326 | 41.00 | ||
| UCP328 | 140 | 200 | 620 | 500 | 140 | 55 | 40 | 75 | 390 | 145 | 59 | M33 | UC328 | P328 | 50.00 | ||
| BearingUint No. | Shaft Dia d | Dimensinons(mm) | Bolt Used | Bearing No. | Housing No. | Housing Wt (kg) |
|||||||||||
| h | a | e | b | S2 | S1 | g | w | Bi | n | (mm) | (in) | ||||||
| (in) | (mm) | ||||||||||||||||
| UCPE201-8 | 1/2 | 30.2 | 124 | 95 | 31 | 15 | 11 | 14 | 57.1 | 26 | 10 | M8 | 5/16 | UCW201-8 | PE203 | 0.45 | |
| UCPE202-9 | 9/16 | UCW202-9 | |||||||||||||||
| UCPE202-10 | 5/8 | UCW202-10 | |||||||||||||||
| UCPE203-11 | 11/16 | UCW203-11 | |||||||||||||||
| UCPE201 | 12 | UCW201 | |||||||||||||||
| UCPE202 | 15 | UCW202 | |||||||||||||||
| UCPE203 | 17 | UCW203 | |||||||||||||||
| UCPE204-12 | 3/4 | 33.3 | 127 | 95 | 38 | 16 | 13 | 15 | 65 | 31 | 12.7 | M10 | 3/8 | UC204-12 | PE204 | 0.65 | |
| UCPE204 | 20 | UC204 | |||||||||||||||
| UCPE205-13 | 13/16 | 25 | 36.6 | 140 | 105 | 38 | 16 | 13 | 16 | 70 | 34 | 14.3 | M10 | 3/8 | UC205-13 | PE205 | 0.75 |
| UCPE205-14 | 7/8 | UC205-14 | |||||||||||||||
| UCPE205-15 | 15/16 | UC205-15 | |||||||||||||||
| UCPE205-16 | 1 | UC205-16 | |||||||||||||||
| UCPE205 | UC205 | ||||||||||||||||
| UCPE206-17 | 1-1/16 | 30 | 42.9 | 165 | 121 | 48 | 21 | 17 | 18 | 83 | 38.1 | 15.9 | M14 | 1/2 | UC206-17 | PE206 | 1.15 |
| UCPE206-18 | 1-1/8 | UC206-18 | |||||||||||||||
| UCPE206-19 | 1-3/16 | UC206-19 | |||||||||||||||
| UCPE206-20 | 1-1/4 | UC206-20 | |||||||||||||||
| UCPE206 | UC206 | ||||||||||||||||
| UCPE207-20 | 1-1/4 | 35 | 47.6 | 167 | 127 | 48 | 21 | 17 | 19 | 94 | 42.9 | 17.5 | M14 | 1/2 | UC207-20 | PE207 | 1.30 |
| UCPE207-21 | 1-5/16 | UC207-21 | |||||||||||||||
| UCPE207-22 | 1-3/8 | UC207-22 | |||||||||||||||
| UCPE207-23 | 1-7/16 | UC207-23 | |||||||||||||||
| UCPE207 | UC207 | ||||||||||||||||
| UCPE208-24 | 1-1/2 | 40 | 49.2 | 137 | 54 | 25 | 17 | 19 | 100 | 49.2 | 19.0 | M14 | 1/2 | UC208-24 | PE208 | 1.50 | |
| UCPE208-25 | 1-9/16 | UC208-25 | |||||||||||||||
| UCPE208 | UC208 | ||||||||||||||||
| UCPE209-26 | 1-5/8 | 45 | 54 | 190 | 146 | 54 | 25 | 17 | 20 | 108 | 49.2 | 19.0 | M14 | 1/2 | UC209-26 | 1.75 | |
| UCPE209-27 | 1-11/16 | UC209-27 | |||||||||||||||
| UCPE209-28 | 1-3/4 | UC209-28 | |||||||||||||||
| UCPE209 | UC209 | ||||||||||||||||
| UCPE210-29 | 1-13/16 | 50 | 57.2 | 206 | 159 | 60 | 25 | 20 | 22 | 114 | 51.6 | 19.0 | M16 | 5/8 | UC210-29 | PE210 | 2.35 |
| UCPE210-30 | 1-7/8 | UC210-30 | |||||||||||||||
| UCPE210-31 | 1-15/16 | UC210-31 | |||||||||||||||
| UCPE210-32 | 2 | UC210-32 | |||||||||||||||
| UCPE210 | UC210 | ||||||||||||||||
| UCPE211-32 | 2 | 55 | 63.5 | 219 | 171 | 60 | 25 | 20 | 22 | 126 | 55.6 | 22.2 | M16 | 5/8 | UC211-32 | PE211 | 2.60 |
| UCPE211-33 | 2-1/16 | UC211-33 | |||||||||||||||
| UCPE211-34 | 2-1/8 | UC211-34 | |||||||||||||||
| UCPE211-35 | 2-3/16 | UC211-35 | |||||||||||||||
| UCPE211 | UC211 | ||||||||||||||||
| UCPE212-36 | 2-1/4 | 60 | 69.8 | 241 | 184 | 70 | 25 | 20 | 25 | 138 | 65.1 | 25.4 | M16 | 5/8 | UC212-36 | PE212 | 4.00 |
| UCPE212-37 | 2-5/16 | UC212-37 | |||||||||||||||
| UCPE212-38 | 2-3/8 | UC212-38 | |||||||||||||||
| UCPE212-39 | 2-7/16 | UC212-39 | |||||||||||||||
| UCPE212 | UC212 | ||||||||||||||||
| UCPE213-40 | 2-1/2 | 65 | 76.2 | 265 | 203 | 70 | 29 | 25 | 27 | 65.1 | 25.4 | M20 | 3/4 | UC213-40 | PE213 | 4.77 | |
| UCPE213-41 | 2-9/16 | UC213-41 | |||||||||||||||
| UCPE213 | UC213 | ||||||||||||||||
| UCPE214-42 | 2-5/8 | 70 | 79.4 | 266 | 210 | 72 | 31 | 25 | 27 | 156 | 74.6 | 30.2 | M20 | 3/4 | UC214-42 | PE214 | 5.30 |
| UCPE214-43 | 2-11/16 | UC214-43 | |||||||||||||||
| UCPE214-44 | 2-3/4 | UC214-44 | |||||||||||||||
| UCPE214 | UC214 | ||||||||||||||||
| UCPE215-45 | 2-13/16 | 75 | 82.6 | 275 | 217 | 74 | 31 | 25 | 28 | 163 | 77.8 | 33.3 | M20 | 3/4 | UC215-45 | PE215 | 6.00 |
| UCPE215-46 | 2-7/8 | UC215-46 | |||||||||||||||
| UCPE215-47 | 2-15/16 | UC215-47 | |||||||||||||||
| UCPE215-48 | 3 | UC215-48 | |||||||||||||||
| UCPE215 | UC215 | ||||||||||||||||
Our packing:
* Industrial pakage+outer carton+pallets
* sigle box+outer carton+pallets
* Tube package+middle box+outer carton+pallets
* According to your requirments
Company Profile
Honor and Certification
Rated as an excellent company in the local area, and both quality and management systems have been recognized.
We have been engaged in foreign trade for more than 6 years and are well-known enterprises in ZheJiang
Province. The fixed assets of the machine are more than 2 million US dollars, and the annual foreign trade
sales volume exceeds 2 million US dollars.
We have extensive cooperation with countries in Asia, Europe, and the Americas. Including Russia, Ukraine,
elarus, Kazakhstan, Uzbekistan, Tajikistan, Spain, Mexico,India, Pakistan, Turkey, Vietnam and other industrial
areas.
SAMPLES
1.Samples quantity: 1-10 pcs are available.
2.Free samples: It depends on the model NO., material and quantity. Some of the bearings samples need client to pay
samples charge and shipping cost.
3.It’s better to start your order with Trade Assurance to get full protection for your samples order.
CUSTOMIZED
The customized LOGO or drawing is acceptable for us.
MOQ
1.MOQ: 10 pcs mix different standard bearings.
2.MOQ: 3000 pcs customized your brand bearings.
OEM POLICY
1.We can printing your brand (logo,artwork)on the shield or laser engraving your brand on the shield.
2.We can custom your packaging according to your design
3.All copyright own by clients and we promised don’t disclose any info.
SUPORT
Please visit our bearings website, we strongly encourge that you can communicate with us through email,thanks!
We have all kinds of bearings, just tell me your item number and quantity,best price will be offered to you soon
The material of the bearings, precision rating, seals type,OEM service,etc, all of them we can make according to your requirement.
| Contact Angle: | Small and Medium-Sized (60-115mm) |
|---|---|
| Aligning: | Non-Aligning Bearing |
| Separated: | Separated |
| Samples: |
US$ 10/Piece
1 Piece(Min.Order) | Order Sample |
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| Customization: |
Available
| Customized Request |
|---|
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
|
|---|---|
|
Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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How long do UCP bearings last?
The lifespan of UCP bearings, also known as pillow block bearings, can vary depending on several factors. Here’s a detailed explanation of the factors that can influence the longevity of UCP bearings:
- Operating Conditions: The operating conditions play a significant role in the lifespan of UCP bearings. Factors such as the load magnitude, speed, temperature, and environmental conditions can impact the bearing’s performance and durability. Bearings operating under heavy loads, high speeds, or in harsh environments may experience increased wear and fatigue, potentially reducing their lifespan.
- Maintenance and Lubrication: Proper maintenance practices, including regular inspection, cleaning, and lubrication, can significantly extend the lifespan of UCP bearings. Adequate lubrication forms a protective film between the rolling elements and the bearing races, reducing friction and wear. Insufficient or improper lubrication can lead to increased friction, heat generation, and premature failure of the bearings.
- Quality and Material: The quality and material composition of UCP bearings can influence their lifespan. Bearings made from high-quality materials, such as stainless steel or chrome steel, are generally more resistant to wear, corrosion, and fatigue. Careful selection of UCP bearings from reputable manufacturers, considering factors like load ratings and performance specifications, can contribute to longer bearing life.
- Installation and Alignment: Proper installation and alignment of UCP bearings are critical for their longevity. Ensuring correct shaft and housing fits, accurate alignment of the bearing components, and appropriate tightening of locking mechanisms help distribute loads evenly and prevent excessive stress or misalignment. Improper installation can lead to premature wear, increased friction, and reduced bearing life.
- Application-Specific Factors: The specific application in which UCP bearings are used can influence their lifespan. Factors like shock loads, vibration, contamination, and the presence of corrosive substances can affect bearing performance and durability. Adequate protection measures, such as seals or shields, can help mitigate these factors and prolong bearing life.
Given these factors, it can be challenging to provide an exact lifespan for UCP bearings. In some applications, UCP bearings can last for many years or even decades if properly maintained and operated within their specified limits. However, in demanding or unfavorable conditions, the lifespan of UCP bearings may be shorter, requiring more frequent inspection and replacement.
It’s important to monitor the condition of UCP bearings regularly and look for signs of wear, damage, or performance degradation. Any unusual noise, excessive vibration, increased temperature, or other signs of bearing failure should be addressed promptly to avoid further damage to the bearings and the machinery they support.
Consulting the manufacturer’s documentation, maintenance guidelines, or seeking advice from bearing experts can provide more specific information regarding the expected lifespan of UCP bearings in a particular application or operating environment.

What are the signs of a failing UCP bearing?
A failing UCP bearing, also known as a pillow block bearing, can exhibit various signs and symptoms that indicate a potential problem. It’s important to recognize these signs early on to avoid further damage to the bearing and the machinery it supports. Here’s a detailed explanation of the common signs of a failing UCP bearing:
- Abnormal Noise: Unusual noises, such as grinding, scraping, clicking, or rumbling sounds, coming from the UCP bearing or the machinery it is installed in can indicate bearing failure. These noises may occur during operation or when the machinery is under load. Pay attention to any new or persistent noises that are not typical for the normal operation of the machinery.
- Excessive Vibration: A failing UCP bearing can cause increased vibration in the machinery. This vibration may be felt through the equipment or detected visually by observing excessive movement or shaking. Excessive vibration can lead to reduced performance, increased wear on other components, and potential safety hazards.
- Increased Temperature: If the UCP bearing is running at a higher temperature than usual, it can be a sign of bearing failure. Excessive heat can indicate increased friction, inadequate lubrication, or other issues with the bearing. Use caution when assessing the temperature and avoid touching hot surfaces directly.
- Reduced Performance: A failing UCP bearing can result in reduced performance of the machinery it supports. This can manifest as decreased efficiency, diminished output, or difficulty in achieving desired speeds or loads. The bearing’s inability to support the required operational demands can lead to performance issues in the machinery.
- Uneven or Excessive Wear: Inspect the UCP bearing for signs of wear or damage. Look for uneven wear patterns, pitting, scoring, or discoloration on the bearing surfaces. Excessive wear can indicate inadequate lubrication, contamination, misalignment, or other problems that can lead to bearing failure.
- Leakage or Contamination: If there is evidence of grease or lubricant leakage around the UCP bearing housing or seals, it may indicate a failing bearing. Additionally, the presence of contaminants, such as dirt, dust, or water, in or around the bearing can be a sign of compromised sealing or damage to the bearing’s protective barriers.
- Looseness or Excessive Play: A failing UCP bearing may exhibit looseness or excessive play when manually checking for movement. Excessive axial or radial play can indicate wear, misalignment, or internal damage within the bearing. This can result in decreased stability and compromised performance of the machinery.
If you observe any of these signs in your UCP bearing or the machinery it is installed in, it’s important to address the issue promptly. Continuing to operate with a failing UCP bearing can lead to further damage, increased downtime, and potential safety risks. It’s recommended to consult with a qualified technician, maintenance professional, or the bearing manufacturer’s technical support team for proper assessment, diagnosis, and replacement of the failing UCP bearing.
Remember that the signs of a failing UCP bearing may vary depending on the specific application, operating conditions, and other factors. Regular inspection, maintenance, and monitoring of the UCP bearings can help identify potential issues early on and prevent costly failures.

What is a UCP bearing?
A UCP bearing, also known as a pillow block bearing, is a type of mounted bearing commonly used in various industrial applications. It is designed to provide support and facilitate rotational or linear motion in machinery and equipment. Here’s a detailed explanation:
A UCP bearing consists of a bearing unit and a housing. The bearing unit typically includes a rolling element bearing, such as a ball bearing or a roller bearing, which enables smooth and low-friction motion. The housing, often made of cast iron or pressed steel, serves as a support structure for the bearing unit and provides protection against contaminants and external elements.
The term “UCP” stands for “Unit with Cast Iron Pillow Block,” referring to the common use of cast iron housings in UCP bearings. The housing is typically shaped like a pillow or block, with a flat base and mounting holes for easy installation and attachment to a machine or structure.
UCP bearings are widely used in various applications, including conveyor systems, agricultural machinery, industrial equipment, HVAC systems, and more. They offer several advantages:
- Easy Installation: UCP bearings are designed for easy installation and mounting. The housing’s flat base and pre-drilled mounting holes allow for straightforward attachment to a support structure or machine.
- Simple Maintenance: UCP bearings are relatively easy to maintain. They often feature removable bearing units, allowing for inspection, lubrication, and replacement when necessary. This simplifies maintenance tasks and reduces downtime.
- Load Support: UCP bearings are capable of supporting different loads, including radial and axial loads. The specific load capacity depends on the type and size of the bearing unit used within the UCP assembly.
- Protection and Contamination Resistance: The housing of a UCP bearing provides protection to the bearing unit against contaminants, moisture, and other external elements. This helps extend the bearing’s service life and maintain its performance.
- Alignment Compensation: UCP bearings often have self-aligning capabilities, allowing them to compensate for minor misalignments between the shaft and the housing. This feature helps reduce stress and wear on the bearing, enhancing its reliability and longevity.
UCP bearings are available in various sizes, configurations, and bearing types to accommodate different application requirements. It is important to select the appropriate UCP bearing based on factors such as load capacity, operating conditions, and environmental considerations.
In summary, a UCP bearing, or pillow block bearing, is a mounted bearing unit that provides support and facilitates motion in industrial applications. With their easy installation, maintenance convenience, load support, protection, and alignment compensation features, UCP bearings are widely used to ensure reliable and efficient operation of machinery and equipment.


editor by CX 2023-11-09