Read this exact catalogue record
NTN 6056 is recorded in the manufacturer catalogue as single row deep groove ball bearings. Its listed boundary dimensions are 280×420×65 mm: bore d × outside diameter D × bearing/inner-ring width B.
Reference:NTN Europe public product catalogue; source checked 2026-10-01.
How to use the parameters
- Use the complete NTN marking when comparing this record. The base number alone does not establish the same closure, clearance, cage, load rating or speed across brands.
- Dynamic and static load ratings are catalogue reference values, not a permitted working load for every installation. Grease and oil speed entries describe separate lubrication conditions; do not treat the higher value as a general operating limit.
- Mounting dimensions such as shoulder diameters and maximum fillet radii are not the bearing boundary dimensions. Unknown precision, material, lubricant grade and application fitment are not inferred from similar products.
This is an independent technical reference, not an official drawing, a complete current catalogue or an approval for a vehicle or machine.
Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications13 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Variant / construction | Single row deep groove ball bearings | |
| Bore diameter | d | 280 mm |
| Outside diameter | D | 420 mm |
| Width | B | 65 mm |
| Basic dynamic load rating | C | 360 kN |
| Basic static load rating | C0 | 420 kN |
| Fatigue load limit | Pu | 16.9 kN |
| Mass | ≈m | 31 kg |
| Internal clearance | CN | |
| Sealing | open | |
| Cage | machined cage | |
| Minimum operating temperature | Tmin | -40 °C |
| Maximum operating temperature | Tmax | 120 °C |
Product characteristics3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Catalogue construction | Deep groove ball bearing, radial contact, machined cage, open | |
| Cage construction | machined cage | |
| Closure construction | open |
Mounting dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Min shoulder diameter IR | da min | 296 mm |
| Max shoulder diameter OR | Da max | 404 mm |
| Max shaft & housing fillet radius | ra max | 3 mm |
Dimensions and properties6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Internal diameter | d | 280 mm |
| External diameter | D | 420 mm |
| Bearing/Inner ring width | B | 65 mm |
| Min fillet radius | rs | 4 mm |
| Radial clearance class | CN | |
| Mass | 31 kg |
Performance8 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Dynamic load | C | 360 kN |
| Static load | C0 | 420 kN |
| Fatigue limit load | Cu | 16.9 kN |
| Coefficient | f0 | 15.5 |
| Oil lubrication limit speed | N lim | 1600 r/min |
| Grease lubrication limit speed | N lim | 1400 r/min |
| Min operating temperature | Tmin | -40 °C |
| Max operating temperature | Tmax | 120 °C |