RU reference designs combine integrated inner and outer rings with fixing holes for direct mounting. Review the individual model drawings, because bolt-hole patterns and shoulder dimensions matter as much as bore, outside diameter and width.
RU reference designs combine integrated inner and outer rings with fixing holes for direct mounting. Review the individual model drawings, because bolt-hole patterns and shoulder dimensions matter as much as bore, outside diameter and width.
Compare RB or RE when the surrounding structure is designed around retaining flanges. RU and CRBF references require a drawing-level comparison. Compare the related series.
RU85 · RU66 · RU42 · RU124 · RU148 · RU178 · RU228 · RU52 · RU28 · RU297
Read all dimensions against the matching drawing. Blank values mean unspecified, not zero. Reference numbers do not establish full interchangeability.
| LYDL designation | d (mm) | D (mm) | B (mm) | Dpw (mm) | ds (mm) | Dh (mm) | Outer PCD (mm) | Outer fixing holes (mm) | Inner PCD (mm) | Inner fixing holes (mm) | Cr (kN) | C0r (kN) | Mass (kg) | Reference designation |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LRU 1008 | 10 | 52 | 8 | 27.5 | 24 | 31 | 42 | 6-φ3.4 through hole， φ6.5 counterbore depth 3.3 | 16 | 4-M3 | 2.91 | 2.43 | 0.12 | CRBF108AT |
| LRU28 | 10 | 52 | 8 | 28 | 24 | 29.5 | 2.9 | 2.43 | 0.12 | RU28 | ||||
| LRU 2012 | 20 | 70 | 12 | 41.5 | 37 | 47 | 57 | 6-φ3.4 through hole， φ6.5 counterbore depth 3.3 | 28 | 6-M3 | 7.35 | 8.35 | 0.29 | RU42 /CRBF2012AT |
| LRU 2512 | 25 | 80 | 12 | 52.5 | 46.5 | 58.5 | 67 | 6-φ3.4 through hole， φ6.5 counterbore depth 3.3 | 35 | 6-M3 | 8.61 | 10.6 | 0.4 | CRBF2512AT |
| LRU 3515 | 35 | 95 | 15 | 66 | 59 | 74 | 83 | 8-φ4.5 through hole ，φ8 counterbore depth 4.4 | 45 | 8-M4 | 17.5 | 22.3 | 0.66 | RU66 CRBF3515AT |
| LRU 5515 | 55 | 120 | 15 | 85 | 79 | 93 | 105 | 8-φ5.5 through hole， φ9.5 counterbore depth 5.4 | 65 | 8-M5 | 20.3 | 29.5 | 1 | RU85 CRBF5515AT |
| LRU 8022 | 80 | 165 | 22 | 124 | 114 | 134 | 148 | 10-φ5.5 through hole ，φ9.5 counterbore depth 5.4 | 97 | 10-φ5.5 through hole，φ9.5 sink hole depth 5.4 | 33.1 | 50.9 | 2.6 | RU124 CRBF8022A |
| LRU 8022G | 80 | 165 | 22 | 124 | 114 | 134 | 148 | 10-φ5.5 through hole ，φ9.5 counterbore depth 5.4 | 97 | 10-φ5.5 through hole，φ9.5 sink hole depth 5.4 | 33.1 | 50.9 | 2.6 | RU124G CRBF8022AD |
| LRU 8022X | 80 | 165 | 22 | 124 | 114 | 134 | 148 | 10-φ5.5 through hole ，φ9.5 counterbore depth 5.4 | 97 | 10-M5 | 33.1 | 50.9 | 2.6 | RU124X CRBF8022AT |
| LRU 9025 | 90 | 210 | 25 | 147.5 | 133 | 162 | 187 | 12-φ9 through hole， φ14 counterbore depth 8.6 | 112 | 12-φ9 through hole，φ14 sink hole depth 8.6 | 49.1 | 76.8 | 4.9 | RU148 |
| LRU 9025G | 90 | 210 | 25 | 147.5 | 133 | 162 | 187 | 12-φ9 through hole， φ14 counterbore depth 8.6 | 112 | 12-φ9 through hole，φ14 sink hole depth 8.6 | 49.1 | 76.8 | 4.9 | RU148G |
| LRU 9025X | 90 | 210 | 25 | 147.5 | 133 | 162 | 187 | 12-φ9 through hole， φ14 counterbore depth 8.6 | 112 | 12-M8 | 49.1 | 76.8 | 4.9 | RU148X |
| LRU 11528 | 115 | 240 | 28 | 178 | 161 | 195 | 217 | 12-φ9 through hole， φ14 counterbore depth 8.6 | 139 | 12-φ9 through hole，φ14 sink hole depth 8.6 | 80.3 | 135 | 6.8 | RU178 |
| LRU 11528G | 115 | 240 | 28 | 178 | 161 | 195 | 217 | 12-φ9 through hole， φ14 counterbore depth 8.6 | 139 | 12-φ9 through hole，φ14 sink hole depth 8.6 | 80.3 | 135 | 6.8 | RU178G |
| LRU 11528X | 115 | 240 | 28 | 178 | 161 | 195 | 217 | 12-φ9 through hole， φ14 counterbore depth 8.6 | 139 | 12-M8 | 80.3 | 135 | 6.8 | RU178X |
| LRU 16035 | 160 | 295 | 35 | 227.5 | 208 | 246 | 270 | 12-φ11 through hole， φ17.5 counterbore depth 10.8 | 184 | 12-φ11 through hole，φ17.5 sink hole depth 10.8 | 104 | 173 | 11.4 | RU228 |
| LRU 16035G | 160 | 295 | 35 | 227.5 | 208 | 246 | 270 | 12-φ11 through hole， φ17.5 counterbore depth 10.8 | 184 | 12-φ11 through hole，φ17.5 sink hole depth 10.8 | 104 | 173 | 11.4 | RU228G |
| LRU 16035X | 160 | 295 | 35 | 227.5 | 208 | 246 | 270 | 12-φ11 through hole， φ17.5 counterbore depth 10.8 | 184 | 12-M10 | 104 | 173 | 11.4 | RU228X |
| LRU 21040 | 210 | 380 | 40 | 297.3 | 272 | 320 | 350 | 16-φ14 through hole ，φ20 counterbore depth 13 | 240 | 16-φ14 through hole，φ20 sink hole depth 13 | 156 | 281 | 21.3 | RU297 |
| LRU 21040G | 210 | 380 | 40 | 297.3 | 272 | 320 | 350 | 16-φ14 through hole ，φ20 counterbore depth 13 | 240 | 16-φ14 through hole，φ20 sink hole depth 13 | 156 | 281 | 21.3 | RU297G |
| LRU 21040X | 210 | 380 | 40 | 297.3 | 272 | 320 | 350 | 16-φ14 through hole ，φ20 counterbore depth 13 | 240 | 16-M12 | 156 | 281 | 21.3 | RU297X |
| LRU 35045 | 350 | 540 | 45 | 445.4 | 417 | 473 | 505 | 24-φ14 through hole ，φ20 counterbore depth 13 | 385 | 24-φ14 through hole，φ20 sink hole depth 13 | 222 | 473 | 35.4 | RU445 |
| LRU 35045G | 350 | 540 | 45 | 445.4 | 417 | 473 | 505 | 24-φ14 through hole ，φ20 counterbore depth 13 | 385 | 24-φ14 through hole，φ20 sink hole depth 13 | 222 | 473 | 35.4 | RU445G |
| LRU 35045X | 350 | 540 | 45 | 445.4 | 417 | 473 | 505 | 24-φ14 through hole ，φ20 counterbore depth 13 | 385 | 24-M12 | 222 | 473 | 35.4 | RU445X |
LRU1008, LRU28 and other similar-size entries must retain their separate mounting data. Similar 10 × 52 × 8 mm boundaries do not prove identical shoulder or hole dimensions.
Technical reference: THK Cross-Roller Ring type overview. Brand names identify reference families only. Supplied LYDL dimensions, tolerances, load ratings and acceptance requirements are defined by the drawing and quotation agreed for the order.
Request a drawing or quote with the complete model, quantity, loads, speed, duty cycle and mounting requirements.
