Verified special series
MR4180-MR4188 Heavy-Load Adjustable Combined Bearings
These large combined bearings are adjusted externally for heavy steel-section guidance. The published range covers 170 to 390 mm outside diameters.
Dimensions and ratings
Series technical table
| Model | d mm | D mm | B mm | H mm | H1 mm | C1 mm | d1 mm | S mm | r mm | Cr kN | C0r kN | Ca kN | C0a kN | Speed | Mass |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MR4180 | 70 | 170 | 51 | 109.7 | 84.7 | 49.7 | 98 | 11.2 | 4 | 195 | 360 | 85 | 130 | Not published | Not published |
| MR4181 | 80 | 185 | 47 | 100 | 75 | 49.7 | 115 | 15 | 3 | 235 | 440 | 85 | 130 | Not published | Not published |
| MR4182 | 110 | 220 | 60 | 115 | 90 | 70 | 150 | 13.5 | 5 | 365 | 720 | 105 | 230 | Not published | Not published |
| MR4183 | 130 | 260 | 60 | 120 | 95 | 80 | 184 | 18.5 | 5 | 475 | 1000 | 165 | 280 | Not published | Not published |
| MR4184 | 150 | 260 | 80 | 135 | 110 | 80 | 187 | 10 | 5 | 565 | 1300 | 165 | 280 | Not published | Not published |
| MR4185 | 140 | 300 | 80 | 140 | 110 | 86 | 190 | 10 | 8 | 550 | 1275 | 195 | 335 | Not published | Not published |
| MR4186 | 140 | 315 | 89 | 240 | 120 | 100 | 240 | 10 | 8 | 785 | 1690 | 225 | 390 | Not published | Not published |
| MR4187 | 140 | 340 | 89 | 150 | 120 | 100 | 240 | 10 | 8 | 785 | 1690 | 225 | 390 | Not published | Not published |
| MR4188 | 170 | 390 | 118 | 200 | 150 | 100 | 242 | 11 | 8 | 1075 | 2535 | 225 | 390 | Not published | Not published |
Selection notice: Catalog values support identification. Confirm suffix, drawing, load case, adjustment, lubrication and current production data before ordering.
Design, materials and verification
- Outer ring: UNI 16CrNi4 case-hardened and tempered, 62 ±2 HRC
- Inner ring and rolling elements: UNI 100Cr6 hardened and tempered
- Main stud: weldable Fe52C
- Speed and mass are not published in the source table; confirm them on the controlled quotation drawing
Data reviewed: 2026-07-18. Authorized Jade MR418 heavy-load technical sheet. The downloadable table is an identification reference; the quotation drawing controls production and inspection.
Technical drawings
Combined bearing model directoryStandard NbV profilesTechnical downloads