Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | EX27778 | |
| Variant / construction | Cylindrical 1-Row | |
| Bore diameter | d | 850 mm |
| Outside diameter | D | 1220 mm |
| Width | B | 212 mm |
| Basic dynamic load rating | C | 8850 kN |
| Basic static load rating | C0 | 16200 kN |
| Mass | ≈m | 820.5 kg |
| Sealing | Open | |
| Cage | Window Brass cage |
Calculation Factors6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| K Factor | 0.00 | |
| Y1 Factor | 0.00 | |
| Y2 Factor | 0.00 | |
| Y0 Factor | 0.00 | |
| E Factor | 0.00 | |
| Cg Factor | 0.4133 |
Manufacturer Identity9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | Timken | |
| Material Number | 000000000190034541 | |
| World Assembly Part Number | NU20/850EMAW73W220 | |
| Inner Ring Part Number | 850ARUE20W37W50BW73 | |
| Outer Ring Part Number | 850ERUE20W37W45BW73 | |
| Drawing Number | M948173 | |
| Upc | 0013992371881 | |
| Official Source System | CORE BP - DS DF | |
| Official Last Run | 2026-08-23T20:02:47.757 |
Product Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Type Description | Cylindrical 1-Row | |
| Construction | Single Row Cylindrical Roller Bearing | Imperial Series | 33.4646 in Bore | 48.0315 in OD | 8.3465 in Width | Open | Cylindrical Bore | Machined Window Brass Cage | C3 Clearance | |
| Number Of Rows | 1 | |
| Tapered Bore | N |
Technical Data10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Overall Width | 0.000 mm | |
| Radial Rating | 8,850,000 N | |
| Axial Rating | 0 N | |
| Dynamic Rating C1 | 8,850,000 N | |
| Dynamic Rating C90 | 0 N | |
| Dynamic Axial Rating Ca90 | 0 N | |
| Dynamic Axial Rating Ca1 | 0 N | |
| Static Radial Rating C0 | 16,200,000 N | |
| Extended Dynamic Rating Ce | 0 N | |
| Static Axial Rating C0A | 0 N |
