Mounted bearing unit cross-references

Basic bearing cross-reference information.

Created: 
Updated: 

Glossary

  • Standard Duty Pillow Blocks bearings are mounted in rigid housings of simple construction. These are the most common pillow blocks and are used extensively for various kinds of power transmission in stationary equipment and machinery.
  • Standard Duty, Low Base Pillow Blocks are basically the same design as standard pillow blocks, however the lower base provides a lower center of operation. This makes the unit particularly suitable when space between the center and the mounting base is limited.
  • Cylindrical Cartridge Bearings are designed to provide shaft support where the shaft axis is perpendicular to and passing through a solid support, in a location where the cartridges can be mounted with a press rather than bolt flanges.
  • Standard Duty, 4-bolt Flange units have square flanges which can be easily attached to a mounting surface with four bolts. This simple method of installation makes this unit convenient for applications where frequent disassembly may be required.
  • Standard Duty, 4-bolt Flange have the same design as the set-screw type, however the distance between bearing center and flange back face is longer, to provide sufficient clearance to use a bearing with an eccentric locking collar.
  • Standard Duty 2-bolt Flange units have a housing with an oval flange with two bolt holes for mounting. This type of unit is easily installed and is suitable where mounting space is limited or where it is necessary to minimize the distance between shafts.

Interchange - Mounted Bearing Units

Photo courtesy of McMaster-Carr.

Photo courtesy of McMaster-Carr.

Direct link to image

Photo courtesy of McMaster-Carr.

Photo courtesy of McMaster-Carr.

Direct link to image

  Description NSK SKF Torr/FAF Seal Master
Insert Bearing, tapered bore w/adaptor, relube UK -- -- --
Bearing, set screw, wide ir, relube UC YAR2 GCxxxxKRRB 2-xx
Bearing, set screw, narrow ir, non-relube UB -- -- V
Bearing, ecc locking collar, narrow ir, non-relube EN YET2 GRAxxxxRRB VxxE
Bearing, ecc locking collar, wide ir, relube EW YEL2 GxxxxKRRB R-xxE
Prefix Block, tapped-base with set screw UCPA -- -- TB
Block, with set screw UCP SYxxTM RASC NP
Block, eccentric locking collar, narrow ir ENP SYxxFM VAS VPxxE
Block, eccentric locking collar EWP -- RAS RPxxE
Block, low base with set screw UCPLL -- YAK NPL
Block, low base w/ecc locking collar, narrow ir ENLPL SYHxxFM VAK VPLxxE
Block, low base w/ecc locking collar EWPLL SYHxxWM RAK RPL
Flange, square, with set screw UCF FYxxTM RCJC SF
Flange, square, with set screw UCFX FYMxxTM -- MSF
Flange, square, w/ecc locking collar, narrow ir ENF FYxxFM VCJ VFxxE
Flange, square, w/ecc locking collar EWFH FYxxWM RCJ RFxxE
Flange, oval, with set screw UCFL FYTxxTM RCJTC SFT
Flange, oval, w/ecc locking collar, narrow ir ENFL FYTxxFM VCJT VFTxxE
Flange, oval, w/ecc locking collar EWFLH FYTxxWM RCJT --
Flange, oval, w/ecc locking collar EWFL -- -- RFTxxE
Flange, pressed steel, oval w/set screw UBPFL -- -- SSFT
Flange, pressed steel, oval w/ecc locking collar ENPFL FTPxxFM RAT SSFTxxE
Flange, round, cartridge w/set screw UCFC -- -- SFC
Flange, round, cartridge w/ecc locking collar EWFC -- -- SFCxxE
Flange, offset, 3 bolt w/set screw UCFK -- -- RB
Take-up type T TB RTU RT
P/N Pressed steel cover Z *Y -- AVAIL
Cast iron cover C -- -- --
Standard series, metric 2XX XX XX S-2xx
Medium series, metric 3XX -- -- --
Medium series, metric Xxx Mxx -- 53xx
Standard series, inch (see shaft size chart) 2xx-xxS x-x/x x-x/x -xx
Medium series, inch (see shaft size chart) 3xx-xxS x-x/x x-x/x -xx
Suffix Spherical housing bore tolerance class J7 J      
Inch size set screw in locking device U      
Improved set screw design W      

*Prefix