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UCFB


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 block is 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
Bolt Size
mm
inch
Weight
Kg
d w b k a i S g h j e i z B n
UCFB201 12 110 62 52 52 25.5 10 13 42 27 32 15 33.3 31 12.7 M8 0.58
UCFB201-8 1/2 4-11/32 2-7/16 2-1/16 2-1/16 1 25/64 1/2 1-21/32 1-1/16 1-17/64 19/32 1-5/16 1.2205 0.5 5/16 0.58
UCFB202 15 110 62 52 52 25.5 10 13 42 27 32 15 33.3 31 12.7 M8 0.57
UCFB202-9 9/16 4-11/32 2-7/16 2-1/16 2-1/16 1 25/64 1/2 1-21/32 1-1/16 1-17/64 19/32 1-5/16 1.2205 0.5 5/16 0.57
UCFB202-10 5/8 0.57
UCFB203 17 110 62 52 52 25.5 10 13 42 27 32 15 33.3 31 12.7 M8 0.56
UCFB203-11 11/16 4-11/32 2-7/16 2-1/16 2-1/16 1 25/64 1/2 1-21/32 1-1/16 1-17/64 19/32 1-5/16 1.2205 0.5 5/16 0.56
UCFB204 20 110 62 52 52 25.5 10 13 42 27 32 15 33.3 31 12.7 M8 0.54
UCFB204-12 3/4 4-11/32 2-7/16 2-1/16 2-1/16 1 25/64 1/2 1-21/32 1-1/16 1-17/64 19/32 1-5/16 1.2205 0.5 5/16 0.54
UCFB205 25 116 68 52 56 27 10 13 45 27 34 16 35.8 34.1 14.3 M8 0.79
UCFB205-13 13/16 4-9/16 2-11/16 2-1/16 2-7/32 1-1/16 25/64 1/2 1-49/64 1-1/16 1-11/32 5/8 1-13/32 1.3425 0.563 5/16 0.79
UCFB205-14 7/8 0.79
UCFB205-15 15/16 0.79
UCFB205-16 1 0.79
UCFB206 30 130 78 55 65 31 10 13 50 29 40 18 40.2 38.1 15.9 M8 0.95
UCFB206-17 1-1/16 5-1/8 3-1/16 2-5/32 2-9/16 1-7/32 25/64 1/2 1-31/32 1-9/64 1-37/64 45/64 1-19/32 1.5 0.626 5/16 0.95
UCFB206-18 1-1/8 0.95
UCFB206-19 1-3/16 0.95
UCFB206-20 1-1/4 0.95
UCFB207 35 144 90 62 70 34 10 15 55 32 46 19 44.4 42.9 17.5 M8 1.29
UCFB207-20 1-1/4 5-21/32 3-35/64 2-7/16 2-3/4 1-11/32 25/64 19/32 2-11/64 1-17/64 1-13/16 3/4 1-3/4 1.689 0.689 5/16 1.29
UCFB207-21 1-5/16 1.29
UCFB207-22 1-3/8 1.29
UCFB207-23 1-7/16 1.29
UCFB208 40 164 100 72 78 36 12 16 60 41 50 21 51.2 49.2 19 M10 1.78
UCFB208-24 1-1/2 6-15/32 3-15/16 2-27/32 3-1/16 1-13/32 15/32 5/8 2-23/64 1-39/64 1-31/32 53/64 2-1/64 1.937 0.748 3/8 1.78
UCFB208-25 1-9/16 1.78
UCFB209 45 174 106 76 80 38 12 18 65 43 54 22 52.2 49.2 19 M10 1.91
UCFB209-26 1-5/8 6-27/32 4-3/16 3 3-5/32 1-1/2 15/32 23/32 2-9/16 1-11/16 2-1/8 55/64 2-1/16 1.937 0.748 3/8 1.91
UCFB209-27 1-11/16 1.91
UCFB209-28 1-3/4 1.91
UCFB210 50 184 112 82 86 40 12 18 68 46 58 22 54.6 51.6 19 M10 2.36
UCFB210-29 1-13/16 7-1/4 4-13/32 3-7/32 3-3/8 1-37/64 15/32 23/32 2-43/64 1-13/16 2-9/32 55/64 2-5/32 2.0315 0.748 3/8 2.36
UCFB210-30 1-7/8 2.36
UCFB210-31 1-15/16 2..36
UCFB210-32 2 2.36
UCFB211 55 207 130 86 90 43 14 18 78 50 62 25 58.4 55.6 22.2 M12 3.15
UCFB211-32 2 8-5/32 5-1/8 3-25/64 3-35/64 1-11/16 35/64 45/64 3-5/64 1-31/32 2-7/16 63/64 2-5/16 2.189 0.874 7/16 3.15
UCFB211-33 2-1/16 3.15
UCFB211-34 2-1/8 3.15
UCFB211-35 2-3/16 3.15
UCFB212 60 223 140 90 94 48 14 18 84 55 66 29 68.7 65.1 25.4 M12 3.99
UCFB212-36 2-1/4 8-25/32 5-1/2 3-35/64 3-45/64 1-7/8 35/64 45/64 3-5/16 2-11/64 2-19/32 1-9/64 2-23/32 2.563 1 7/16 3.99
UCFB212-37 2-5/16 3.99
UCFB212-38 2-3/8 3.99
UCFB212-39 2-7/16 3.99
UCFB213 65 244 155 94 100 50 14 20 92 60 70 30 69.7 65.1 25.4 M12 /
UCFB213-40 2-1/2 9-39/64 6-7/64 3-45/64 3-15/16 1-31/32 35/64 25/32 3-5/8 2-23/64 2-3/4 1-3/16 2-3/4 2.563 1 7/16
UCFB213-41 2-9/16
UCFB201  TWB UCFB211  MGM UCFB301  NSK UCFB311  EZO
UCFB202  ASAHI UCFB212  ZOV UCFB302  NTN UCFB312  DPI
UCFB203  KSM UCFB213  DBZ UCFB303  NACHI UCFB313  KG
UCFB204  KBC UCFB214  FAFNIR UCFB304  TIMKEN UCFB314  RHP
UCFB205  NBU UCFB215  TSUBAKI UCFB305  INA UCFB315  NHBB
UCFB206  SGR UCFB216  GPZ UCFB306  SKF UCFB316  SLF
UCFB207  GWB UCFB217  DYZE UCFB307  SNFA UCFB317  URB
UCFB208  CMS UCFB218  UKB UCFB308  GMN UCFB318  FLT
UCFB209  VMZ UCFB219  KOYO UCFB309  THK UCFB319  ZWZ
UCFB210  SBB UCFB220  FAG UCFB310  KBS UCFB320  LYC
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