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UC Series


pillow block, also known as a plummer block or bearing housing, is a pedestal used to provide support for a rotating shaft with the help of compatible bearings & various accessories. Housing material for a pillow blockis typically made of cast iron or cast steel.

pillow blocks are usually referred to the housings which have a bearing fitted into them & thus the user need not purchase the bearings separately. pillow block are usually mounted in cleaner environments & generally are meant for lesser loads of general industry. These differ from "plummer block" which are bearing housings supplied without any bearings & are usually meant for higher load ratings & corrosive industrial environments. However the terms pillow block & plummer block are used interchangeably in certain parts of the world.

The fundamental application of both types is the same which is to primarily mount bearings safely enabling their outer ring to be stationary while allowing rotation of the inner ring. The housing is bolted to a foundation through the holes in the base. Bearing housings are either split type or unsplit type. Split type housings are usually two piece housings where the cap and base can be detached, while certain series are one single piece housings. Various seals are provided to prevent dust and other contaminants from entering the housing. Thus the housing provides a clean environment for the expensive bearings to freely rotate, hence increasing their performance and duty cycle.

bearing housings are usually made of grey cast iron. However various grades of metals can be used to manufacture the same.

ISO 113 specifies internationally accepted dimensions for plummer blocks.

WGD Bearing No Dimensions mm
inch
Load Rating(KN) Weight
Kg
Dynamic Static
d D B C S S1 G ds F Cr Cor

UC201

12 47 31 17 12.7 18.3 4.8 M6×1x0.75 3.7 12800 6650 0.2

UC201-8

1/2 1.8504 1.2205 0.6693 0.5 0.72 0.189 1/4-2 8UNF 0.146 0.19
UC202 15 47 31 17 12.7 18.3 4.8 M6×1x0.75 3.7 0.19
UC202-9 9/16 1.8504 1.2205 0.6693 0.5 0.72 0.189 1/4-2 8UNF 0.146 0.19
UC202-10 5/8 0.19
UC203 17 47 31 17 12.7 18.3 4.8 M6×1x0.75 3.7 0.18
UC203-11 11/16 1.8504 1.2205 0.6693 0.5 0.72 0.189 1/4-2 8UNF 0.146 0.17
UC204 20 47 31 17 12.7 18.3 4.8 M6×1x0.75 4 12800 6650 0.16
UC204-12 3/4 1.8504 1.2205 0.6693 0.5 0.72 0.189 1/4-28UNF 0.157 0.16
UC205 25 52 34.1 17 14.3 19.8 5 M6×1x0.75 4 14000 7850 0.2
UC205-13 13/16 2.00472 1.3425 0.6693 0.563 0.78 0.197 1/4-28UNF 0.157 0.24
UC205-14 7/8 0.23
UC205-15 15/16 0.21
UC205-16 1 0.2
UC206 30 62 38.1 19 15.9 22.2 5 M6×1x0.75 5 19500 11300 0.32
UC206-17 1-1/16 2.4409 1.5 0.748 0.626 0.874 0.197 1/4-28UNF 0.197 0.33
UC206-18 1-1/8 0.34
UC206-19 1-3/16 0.32
UC206-20 1-1/4 0.31
UC207 35 72 42.9 20 17.5 25.4 7 M8×1 5.5 25700 15300 0.48
UC207-20 1-1/4 2.8346 1.689 0.7874 0.689 1 0.276 5/16-24UNF 0.216 0.54
UC207-21 1-5/16 0.51
UC207-22 1-3/8 0.48
UC207-23 1-7/16 0.45
UC208 40 80 49.2 21 19 30.2 8 M8×1 6 29500 18100 0.64
UC208-24 1-1/2 3.1496 1.937 0.8268 0.748 1.189 0.315 5/16-24UNF 0.236 0.68
UC208-25 1-9/6 0.65
UC209 45 85 49.2 22 19 30.2 8 M8×1 6.4 31600 20600 0.68
UC209-26 1-5/8 3.3465 1.937 0.8661 0.748 1.189 0.315 5/16-24UNF 0.252 0.78
UC209-27 1-11/16 0.74
UC209-28 1-3/4 0.7
UC210 50 90 51.6 24 19 32.6 10 M10×1.25 6.5 35000 23200 0.8
UC210-29 1-13/16 3.5433 2.0315 0.9449 0.748 1.283 0.394 3/8-24UNF 0.256 0.92
UC210-30 1-7/8 0.87
UC210-31 1-15/16 0.82
UC210-32 2 0.78
UC211 55 100 55.6 25 22.2 33.4 10 M10×1.25 7 43500 29200 1.11
UC211-32 2 3.937 2.189 0.9843 0.874 1.315 0.394 3/8-24UNF 0.276 1.26
UC211-33 2-1/16 1.2
UC211-34 2-1/8 1.15
UC211-35 2-3/16 1.09
UC212 60 110 65.1 27 25.4 39.7 10 M10×1.25 7.5 47700 32900 1.54
UC212-36 2-1/4 4.3307 2.563 1.063 1 1.563 0.394 3/8-24UNF 0.295 1.67
UC212-37 2-5/16 4.59
UC212-38 2-3/8 1.52
UC212-39 2-7/16 1.45
UC213 65 120 65.1 28 25.4 39.7 10 M10×1.25 8.5 57500 40000 1.85
UC213-40 2-1/2 4.3307 2.563 1.1024 1 1.563 0.394 3/8-24UNF 0.335 1.94
UC213-41 2-9/16 1.85
UC214 70 125 74.6 29 30.2 44.4 12 M12×1.5 9 60800 45000 2.05
UC214-42 2-5/8 4.9213 2.937 1.1417 1.189 1.748 0.472 7/16-20UNF 0.35 2.26
UC214-43 2-11/16 2.16
UC214-44 2-3/4 2.06
UC215 75 130 77.8 30 33.3 44.5 12 M12×1.5 9.2 66000 49500 2.21
UC215-45 2-13/16 5.1181 3.063 1.1811 1.311 1.752 0.472 7/16-20UNF 0.362 2.46
UC215-46 2-7/8 2.35
UC215-47 2-15/16 2.24
UC215-48 3 2.12
UC216 80 140 82.6 32 33.3 49.3 12 M12×1.5 9.5 71500 54200 2.8
UC216-49 3-1/16 5.5118 3.252 1.2598 1.311 1.9409 0.472 7/16-20UNF 0.374 2.98
UC216-50 3-1/8 2.85
UC216-51 3-3/16 2.72
UC217 85 150 85.7 34 34.1 51.6 12 M12×1.5 10.2 83500 64000 3.46
UC217-52 3-1/14 5.9055 3.374 1.3386 1.343 2.031 0.472 7/16-20UNF 0.402 3.68
UC217-53 3-5/16 3.54
UC217-55 3-7/16 3.25
UC218 90 160 96 36 39.7 56.3 12 M12×1.5 11.2 96000 71500 4.36
UC, 218-56 3-1/2 6.2992 3.7795 1.4173 1.563 2.217 0.472 1/2-20UNF 0.441 4.47
UC305 25 62 38 20 15 23 6 M6×0.75 5.4 22400 11500 0.35
UC305-13 13/16 2.4409 14961 0.7874 0.591 0.906 0.236 1/4-28UNF 0.213 0.4
UC305-14 78 0.38
UC305-15 15/16 0.36
UC305-16 1 0.35
UC306 30 72 43 23 17 26 6 M6×0.75 5.7 26700 11500 0.56
UC306-17 1-1/16 2.8346 1.6929 0.9055 0.669 1.024 0.236 1/4-28UNF 0.225 0.61
UC306-18 1-1/8 0.58
UC306-19 1-3/16 0.56
UC307 35 80 48 25 19 29 8 M8×1 6.2 33500 19100 0.71
UC307-20 1-1/4 3.1496 1.8898 0.9843 0.748 1.142 0.315 5/16-20UNF 0.224 0.77
UC307-21 1-5/16 0.74
UC307-22 1-3/8 0.71
UC307-23 1-7/16 0.68
UC308 40 90 52 27 19 33 10 M10×1.25 7 40500 24000 0.96
UC308-24 1-1/2 3.5433 2.0472 1.063 0.748 1.299 0.394 3/8-24UNF 0.276 1.01
UC308-25 1-9/16 0.97
UC309 45 100 57 30 22 35 10 M10×1.25 7.8 52800 31800 1.28
UC309-26 1-5/8 3.937 2.2441 1.1811 0.866 1.378 0.394 3/8-24UNF 0.307 1.39
UC309-27 1-11/16 1.35
UC309-28 1-3/4 1.3
UC310 50 110 61 32 22 39 12 M12×1.5 8.5 61800 37900 1.65
UC310-29 1-13/16 4.3307 2.4016 1.2598 0.886 1.535 0.472 1/2-20UNF 0.335 1.97
UC310-30 1-7/8 1.74
UC310-31 1-15/16 1.68
UC311 55 120 66 34 25 41 12 M12×1.5 9.2 71500 44700 2.07
UC311-32 2 4.7244 2.5984 1.3386 0.984 1.614 0.472 1/2-20UNF 0.362 2.25
UC311-33 2-1/16 2.18
UC311-34 2-1/8 2.12
UC311-35 2-3/16 2.04
UC312 60 130 71 36 26 45 12 M12×1.5 9.8 81700 51800 2.6
UC312-36 2-1/4 5.1181 2.7953 1.4173 1.0236 1.772 0.472 1/2-20UNF 0.386 2.75
UC312-37 2-5/16 2.67
UC312-38 2-3/8 2.58
UC312-39 2-7/16 2.5
UC313 65 140 75 38 30 45 12 M12×1.5 10.5 92500 60000 3.25
UC313-40 2-1/2 5.5118 2.9528 1.4961 1.181 1.772 0.472 1/2-20UNF 0.413 3.34
UC313-41 2-9/16 3.24
UC314 70 150 78 40 33 45 12 M12×1.5 11.1 104000 68000 3.89
UC314-42 2-5/8 5.9055 3.0708 1.5748 1.299 1.772 0.472 1/2-20UNF 0.437 4.11
UC314-43 2-11/16 4
UC314-44 2-3/4 3.9
UC315 75 160 82 42 32 50 14 M14×1.5 11.8 113000 77000 4.72
UC315-45 2-13/16 6.2992 3.2283 1.6535 1.26 1.969 0.551 9/16-18UNF 0.465 4.99
UC315-46 3-7/8 4.85
UC315-47 2-15/16 4.76
UC315-48 3 4.63
UC316 80 170 86 44 34 52 14 M14×1.5 12.5 123000 86500 5.55
UC316-49 3-1/16 6.6929 3.3858 1.7323 1.339 2.047 0.551 9/16-18UNF 0.492 5.72
UC316-50 3-1/8 5.58
UC316-51 3-3/16 5.49
UC317 85 180 96 46 40 56 16 M16×1.5 13.1 132600 96500 6.67
UC317-52 3-1/4 7.0866 3.7795 1.811 1.575 2.205 0.63 5/8-18UNF 0.516 6.89
UC317-53 3-5/16 6.76
UC317-55 3-7/16 6.44
UC318 90 190 96 48 40 56 16 M16×1.5 13.8 144000 108000 7.55
UC318-55 3-7/16 7.4803 3.7795 1.8898 1.575 2.205 0.63 5/8-18UNF 0.543 7.85
UC318-56 3-1/2 7.67
UC319 95 200 103 50 41 62 16 M16×1.5 14.7 156600 122000 8.7
UC319-58 3-5/8 7.874 4.0551 1.9685 1.614 2.441 0.63 5/8-18UNF 0.579
UC319-59 3-11/16
UC319-60 3-3/4
UC320 100 215 108 54 42 66 18 M18×1.5 15.7 17300 141000 10.8
UC320-64 4 8.4646 4.252 2.126 1.6535 2.5984 0.7087 0.618
UC201  GPZ UC211  SKF UC301  SLF UC311  BRB
UC202  DYZE UC212  SNFA UC302  URB UC312  NIS
UC203  UKB UC213  GMN UC303  FLT UC313  HIC
UC204  KOYO UC214  THK UC304  ZWZ UC314  NMB
UC205  FAG UC215  KBS UC305  LYC UC315  TKO

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