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| Parameter | SKFNNTR 55X140X70.2ZL55 × 140 × mm | INANNTR55X140X70-2ZL55 × 140 × 70 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | SKF | INA |
| Designation | NNTR 55X140X70.2ZL | NNTR55X140X70-2ZL |
| Product family | Support rollers (Yoke-type track rollers) | — |
| Detailed type | Support roller (yoke-type track roller) with flange rings, integral sealing and relubrication feature | Yoke type track roller |
| Series | — | NNTR55X140X70 |
| Bore diameterd | 55 mm | 55 mm |
| Outside diameterD | 140 mm | 140 mm |
| WidthB | — | 70 mm |
| Basic dynamic load ratingC | 209 kN | 219 kN |
| Basic static load ratingC0 | 275 kN | 320 kN |
| Fatigue load limitPu | 37.5 kN | 48 kN |
| Limiting speednG | 700 r/min | 850 r/min |
| Mass≈m | 6.3 kg | 6.29 kg |
| Internal clearance | Between C2 and CN | — |
| Sealing | Seal on both sides | — |
| Cage | Without | — |
| Bearing material | Bearing steel | — |
| Lubricant | Grease | — |
| Dimensions | ||
| Functional outside diameter | 140.0 mm | — |
| Width, total | 70.0 mm | — |
| Width, outer ring | 68.0 mm | — |
| Engineering — Calculation data | ||
| Maximum dynamic radial loadsF r | max. 224 kN | — |
| Maximum static radial loadsF 0r | max. 320 kN | — |
| Engineering — Dimensions | ||
| Width outer ringC | 68 mm | — |
| Width inner ringB | 70 mm | — |
| Outside diameter flange ringd 1 | 73 mm | — |
| Chamfer dimension outer ringr 1,2 | min. 3 mm | — |
| Chamfer dimension flange ring borer 3,4 | min. 2 mm | — |
| Logistics | ||
| Product net weight | 6.3 kg | — |
| eClass code | 23-05-09-03 | — |
| UNSPSC code | 31171512 | — |
| Manufacturer Identity | ||
| Schaeffler Product Code | — | 399287 |
| Base Type | — | NNTR55X140X70 |
| Old Designation | — | ["NNTR 55X140X70.2ZL"] |
| Gpsd Group | — | N03 |
| Product Line Id | — | 12 |
| X Life Marking | — | n.r. |
| Product identity | ||
| 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 | — |
| Product Identity | ||
| Construction | — | Yoke type track roller NNTR..-2ZL, CRB, full complement roller set, two-row, with inner ring, 3 ribs on outer ring, not pallet changer |
| Short Description | — | Yoke type track roller |
| Properties | ||
| 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 | — |
| Radial internal clearance | Between C2 and CN | — |
| Tolerance class | Other | — |
| Material, bearing | Bearing steel | — |
| Coating | Without | — |
| Sealing type | Lamellar | — |
| Relubrication feature | With | — |
| Technical Data | ||
| Bore Diameter (D) | — | 55 mm |
| Outside Diamater (D) | — | 140 mm |
| Width Inner Ring (B) | — | 70 mm |
| Basic Dynamic Load Rating, Radial (Cr W) | — | 219,000 N |
| Basic Static Load Rating, Radial (C0R W) | — | 320,000 N |
| Mounting Dimension (D1) | — | 91 mm |
| Speed On Permanent Grease Lubrication (Nd G) | — | 850 1/min |
| Diameter Lubrication Hole (D3) | — | 4 mm |
| Width, Outer Ring (C) | — | 68 mm |
| Minimum Chamfer Dimension (R1 Min) | — | 2 mm |
| Permissible Static Load, Radial (F0R Per) | — | 320,000 N |
| Permissible Dynamic Load Outer Ring, Radial (Fr Per) | — | 280,000 N |
| Stop Diameter Of Thrust Washer (D2) | — | 73 mm |
| Radius Of Outer Ring Outside Profile (R) | — | 10,000 mm |
| Fatigue Load Limit, Radial (Cur W) | — | 48,000 N |
| Minimum Chamfer Dimension (Rmin) | — | 3 mm |
Independent reference comparison based on the manufacturer data currently loaded. Always verify current limits, tolerances and suffix definitions with the official source before engineering selection.