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 | Support rollers (Yoke-type track rollers) | |
| Bore diameter | d | 55 mm |
| Outside diameter | D | 140 mm |
| Basic dynamic load rating | C | 209 kN |
| Basic static load rating | C0 | 275 kN |
| Fatigue load limit | Pu | 37.5 kN |
| Limiting speed | nG | 700 r/min |
| Mass | ≈m | 6.3 kg |
| Internal clearance | Between C2 and CN | |
| Sealing | Seal on both sides | |
| Cage | Without | |
| Bearing material | Bearing steel | |
| Lubricant | Grease |
Dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Functional outside diameter | 140.0 mm | |
| Bore diameter | 55.0 mm | |
| Width, total | 70.0 mm | |
| Width, outer ring | 68.0 mm |
Product identity5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Official product category | Support rollers (Yoke-type track rollers) | |
| Official taxonomy path | /products/rolling-bearings/track-rollers/support-rollers | |
| Structure group ID | BNT_003 | |
| Available from SKF | Yes | |
| Remanufacturable | No |
Engineering — Calculation data6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | C | 209 kN |
| Basic static load rating | C 0 | 275 kN |
| Fatigue load limit | P u | 37.5 kN |
| Maximum dynamic radial loads | F r | max. 224 kN |
| Maximum static radial loads | F 0r | max. 320 kN |
| Limiting speed | 700 r/min |
Engineering — Dimensions7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Outside diameter | D | 140 mm |
| Bore diameter | d | 55 mm |
| Width outer ring | C | 68 mm |
| Width inner ring | B | 70 mm |
| Outside diameter flange ring | d 1 | 73 mm |
| Chamfer dimension outer ring | r 1,2 | min. 3 mm |
| Chamfer dimension flange ring bore | r 3,4 | min. 2 mm |
Logistics3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Product net weight | 6.3 kg | |
| eClass code | 23-05-09-03 | |
| UNSPSC code | 31171512 |
Performance3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | 209.0 kN | |
| Basic static load rating | 275.0 kN | |
| Limiting speed | 700.0 r/min |
Properties15 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bearing part | Complete track roller | |
| Rolling elements | Cylindrical rollers | |
| Number of rows | 2 | |
| Outer ring profile | Crowned | |
| Axial guidance of outer ring | Yes | |
| Number of flanges, outer ring | 2 | |
| Cage | Without | |
| Radial internal clearance | Between C2 and CN | |
| Tolerance class | Other | |
| Material, bearing | Bearing steel | |
| Coating | Without | |
| Sealing | Seal on both sides | |
| Sealing type | Lamellar | |
| Lubricant | Grease | |
| Relubrication feature | With |
