
Need help confirming fit? Send us the current part number, shaft size, housing photo, or equipment model.

| Dim. | Meaning | in (nom. / tol.) | mm (nom. / tol.) |
|---|---|---|---|
| D | Outside Diameter | 1.6250+0/-.0005 | 41.3+0/-.013 |
| HD | Radial Lub. Hole Diameter | 0.13 | 3 |
| Ro | Max Hsg Radius To Clear | 0.04 | 1 |
| W | 1.000+0/-.005 | 25.40+0/.13 | |
| d | Shaft Diameter | 1.1250+0/-.0005 | 28.6+0/-.013 |
Values as printed for GR 18. Figures are nominal; a tolerance is shown where the catalog prints one, and reference dimensions carry none. Verify critical dimensions before ordering.
Always verify dimensions, load ratings, material, and seal type before ordering.
| Part # | Configuration | Price | View |
|---|---|---|---|
| GR 18 N | Narrow width, unsealed only — typically 0.25 in narrower | Request quote | View |
| GR 18 RS | Single seal, lip turned out | $314.12 | View |
| GR 18 RSS | Double seal, both lips turned out | $96.21 | View |
| GR 18 S | Single seal, lip turned in | $352.07 | View |
| GR 18 SRS | Double seal, one lip turned in and one turned out | $291.69 | View |
| GR 18 SS | Double seal, both lips turned in | $347.82 | View |
Yes. McGill has discontinued the GR 18. The manufacturer's direct replacement is the GR 18 SS, which can be ordered from this page.
Yes. GDS Supply supplies the genuine McGill GR 18, manufacturer article number 5001800000.