Basic code structure
The basic code indicates type, structure and dimension of the bearing.
Type code+Dimension code+Bore diameter code
Catalog structure
Rolling mill bearing data, organized for engineers and buyers.
The attached Stanley catalog includes application technology, product dimension tables and appendix references. This page turns that PDF structure into a fast website navigation system.
PDF catalog
Built for the mill. Proven in motion.
Use the catalog for type selection, code interpretation, dimension checks and appendix data.
Table of contents
1-97Guide of rolling mill bearing application technologytype and code, dimension selection, speed ratings, precision, clearance, materials and fits
98-207Cylindrical roller bearingsfour row, double row, full complement, crane sheave, single row and split designs
208-273Taper roller bearingsmetric, inch, sealed, spacerless, double row, steep contact angle and taper bore designs
274-395Special bearing familiesbacking, spherical, radial ball, thrust, slewing, continuous casting and spherical plain bearings
396-422Appendixtolerance, hardness, inch-mm conversion, steel balls, cylindrical rollers and service record
Bearing code system
Catalog codes move from prefix to suffix.
According to the catalog, rolling mill bearings are symbolized by internationally accepted alphanumeric codes.
Full designation path
Use the complete designation when comparing new and old references or cross-checking bearing family.
Prefix code+Basic code+Suffix code
Request code review
Type code examples from the catalog
These examples help visitors understand the bearing family before reading dimension tables.
| Code | Type of bearing | Website use |
|---|---|---|
| 2 | Spherical roller bearings / spherical roller thrust bearings | Alignment and thrust groups |
| 3 | Taper roller bearings | Four row and double row taper families |
| 6 | Deep groove ball bearings | Radial ball bearing group |
| 7 | Angular contact ball bearings | Locating and matched pair applications |
| N | Single row cylindrical roller bearings | Cylindrical roller group |
| NN | Double row or multi-row cylindrical roller bearings | Mill-duty cylindrical group |
| QJ | Four point contact ball bearings | Radial ball bearing group |
Prefix examples
L means separable bearings with separable inner ring or outer ring. R means bearings without separable inner ring or outer ring. WS and GS identify shaft and housing washers for cylindrical roller thrust bearings.
Tolerance and clearance
Use precision, clearance and configuration as RFQ fields.
The catalog includes tolerance classes, clearance codes and configuration codes. These should be checked before replacing a rolling mill bearing by appearance alone.
| Code area | Examples |
|---|---|
| Tolerance | /P0, /P6, /P6X, /P5, /P4, /P2, /SP, /UP |
| Clearance | /C1, /C2, basic group 0, /C3, /C4, /C5, /CN, /C9 |
| Configuration | D, T, Q, P, S, B, F, BT, FT, DB, DF, DT |
Sample dimension data
Four row cylindrical roller bearing sample from the FC table.
The catalog dimension tables are extensive. This website shows representative rows and directs users to the PDF or RFQ form for exact confirmation.
| Bore d mm | D mm | B mm | Fw mm | Cr KN | Cor KN | New designation | Old designation |
|---|---|---|---|---|---|---|---|
| 80 | 115 | 108 | 90 | 284 | 656 | FC1623108 | - |
| 90 | 140 | 70 | 105 | 239 | 385 | FC182870 | 672718 |
| 100 | 135 | 80 | 110 | 176 | 425 | FC202780 | - |
| 110 | 150 | 80 | 122 | 200 | 520 | FC223080 | - |
| 120 | 165 | 87 | 134.5 | 374 | 745 | FC243387 | - |
| 130 | 175 | 90 | 143 | 291 | 783 | FC263590 | - |
Appendix references
Support tables included in the PDF.
Standard tolerance valueAppendix 1, catalog page 398.
Hardness conversion tableAppendix 2, catalog page 400.
Inch-mm conversionAppendix 3, 1 in = 25.4 mm.
Steel ball dimension tableAppendix 4, GB/T308-2002.
Cylindrical roller dimension tableAppendix 5, GB/T4661-2002.
Roll neck service recordAppendix 6, example service record.