Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications15 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | NA49 | |
| Variant / construction | Machined Type Needle Roller Bearings | |
| Bore diameter | d | 180 mm |
| Outside diameter | D | 250 mm |
| Width | B | 69 mm |
| Basic dynamic load rating | C | 434 kN |
| Basic static load rating | C0 | 989 kN |
| Reference speed | nref | 1140 r/min |
| Limiting speed | nG | 1900 r/min |
| Mass | ≈m | 10.200022 kg |
| Precision class | JIS, Class 0 | |
| Cage | Steel | |
| Bearing material | High Carbon Chrome Steel | |
| Minimum operating temperature | Tmin | -20 °C |
| Maximum operating temperature | Tmax | 120 °C |
Manufacturer Identity1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Cad Part Number | NA4936 |
Product Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Short Description | Machined Type Needle Roller Bearings | |
| Long Description | Machined Type Needle Roller Bearings, High Carbon Steel, Oil Hole, Inner Ring | |
| Official Bearing Family | Needle Roller Bearings | |
| Official Bearing Type | Machined Type Needle Roller Bearings |
Materials2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Rolling Element Material | SUJ2 | |
| Retainer Material | Steel |
Technical Data2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Rolling Element | Roller | |
| Relubricatable | Yes |