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| Parameter | SKFNJ 18/630 ECMA/HB1630 × 780 × 69 mm | FAGNJ18/630-M1630 × 780 × 69 mm | TIMKENNJ18/630EMAC3630 × 780 × 69 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | FAG | TIMKEN |
| Designation | NJ 18/630 ECMA/HB1 | NJ18/630-M1 | NJ18/630EMAC3 |
| Product family | Cylindrical roller bearings | — | Cylindrical 1-Row |
| Detailed type | Single row cylindrical roller bearing, nj design | Cylindrical roller bearings | Cylindrical roller bearings |
| Series | — | — | NCS-442710 |
| Bore diameterd | 630 mm | 630 mm | 630 mm |
| Outside diameterD | 780 mm | 780 mm | 780 mm |
| WidthB | 69 mm | 69 mm | 69 mm |
| Basic dynamic load ratingC | 1100 kN | 1140 kN | 1240 kN |
| Basic static load ratingC0 | 2500 kN | 2600 kN | 2590 kN |
| Fatigue load limitPu | 183 kN | 232 kN | — |
| Reference speednref | 750 r/min | — | — |
| Limiting speednG | 950 r/min | 1460 r/min | — |
| Mass≈m | 75 kg | 71.76 kg | 76 kg |
| Internal clearance | CN | — | — |
| Sealing | Without | — | Open |
| Cage | Machined brass | — | Window Brass cage |
| Lubricant | None | — | — |
| Minimum operating temperatureTmin | — | -30 °C | — |
| Maximum operating temperatureTmax | — | 150 °C | — |
| Calculation Factors | |||
| K Factor | — | — | 0.00 |
| Y1 Factor | — | — | 0.00 |
| Y2 Factor | — | — | 0.00 |
| Y0 Factor | — | — | 0.00 |
| E Factor | — | — | 0.00 |
| Cg Factor | — | — | 0.2643 |
| Engineering — Abutment dimensions | |||
| Diameter of spacer sleeved a | max. 662 mm | — | — |
| Diameter of shaft abutmentd b | min. 685 mm | — | — |
| Diameter of housing abutmentD a | max. 765 mm | — | — |
| Radius of filletr a | max. 3 mm | — | — |
| Engineering — Calculation data | |||
| Minimum load factork r | 0.1 | — | — |
| Limiting valuee | 0.2 | — | — |
| Calculation factorY | 0.6 | — | — |
| Engineering — Dimensions | |||
| Shoulder diameter of inner ringd 1 | ≈ 682 mm | — | — |
| Shoulder diameter of outer ringD 1 | ≈ 724 mm | — | — |
| Raceway diameter of inner ringF | 667 mm | — | — |
| Chamfer dimensionr 1,2 | min. 4 mm | — | — |
| Permissible axial displacements | max. 1.5 mm | — | — |
| Logistics | |||
| Product net weight | 75.0 kg | — | — |
| eClass code | 23-05-09-01 | — | — |
| UNSPSC code | 31171505 | — | — |
| Manufacturer Identity | |||
| Schaeffler Product Code | — | 372313 | — |
| Material Number | — | — | 000000000190067507 |
| Gpsd Group | — | F01 | — |
| World Assembly Part Number | — | — | NJ18/630EMA |
| Product Line Id | — | 75 | — |
| Inner Ring Part Number | — | — | 630ARJE18 |
| Outer Ring Part Number | — | — | 630ERUE18 |
| Drawing Number | — | — | M959637 |
| Upc | — | — | 0013992344663 |
| Official Source System | — | — | CORE BP - DS DF |
| Official Last Run | — | — | 2026-08-23T20:02:47.753 |
| Product identity | |||
| Official product category | Cylindrical roller bearings | — | — |
| Official taxonomy path | /products/rolling-bearings/roller-bearings/cylindrical-roller-bearings/single-row-cylindrical-roller-bearings | — | — |
| Structure group ID | BC1_001_101 | — | — |
| Available from SKF | Yes | — | — |
| Remanufacturable | Yes | — | — |
| Product Identity | |||
| Short Description | — | Cylindrical roller bearing | — |
| Type Description | — | — | Cylindrical 1-Row |
| Construction | — | — | Single Row Cylindrical Roller Bearing | Imperial Series | 24.8032 in Bore | 30.7087 in OD | 2.7165 in Width | Open | Cylindrical Bore | Machined Window Brass Cage | C3 Clearance |
| Number Of Rows | 1 | — | 1 |
| Tapered Bore | — | — | N |
| Properties | |||
| Bearing part | Complete bearing | — | — |
| Axial displacement capability | In one direction | — | — |
| Locating feature, bearing outer ring | Without | — | — |
| Bore type | Cylindrical | — | — |
| Number of flanges, outer ring | 2 | — | — |
| Number of flanges, inner ring | 1 | — | — |
| Loose flange | None | — | — |
| Radial internal clearance | CN | — | — |
| Tolerance class | Normal | — | — |
| Coating | Without | — | — |
| Relubrication feature | Without | — | — |
| Candidate for remanufacturing | Yes | — | — |
| Indicative carbon footprint for new product | 278.0 kg CO 2 e | — | — |
| Indicative carbon footprint for remanufactured product | 92.3 kg CO 2 e | — | — |
| Technical Data | |||
| Bore Diameter (D) | — | 630 mm | — |
| Outside Diamater (D) | — | 780 mm | — |
| Total Width (B) | — | 69 mm | — |
| Basic Dynamic Load Rating, Radial (Cr) | — | 1,140,000 N | — |
| Basic Static Load Rating, Radial (C0R) | — | 2,600,000 N | — |
| Overall Width | — | — | 0.000 mm |
| Raceway Diameter Inner Ring (F) | — | 672 mm | — |
| Radial Rating | — | — | 1,240,000 N |
| Operating Temperature Min. (Tmin) | — | -30 °C | — |
| Axial Rating | — | — | 0 N |
| Minimum Diameter Shaft Shoulder (Da) | — | 645 mm | — |
| Dynamic Rating C1 | — | — | 1,240,000 N |
| Operating Temperature Max. (Tmax) | — | 150 °C | — |
| Dynamic Rating C90 | — | — | 0 N |
| Limiting Speed (Limiting Spe) | — | 1,460 1/min | — |
| Dynamic Axial Rating Ca90 | — | — | 0 N |
| Maximum Diameter Of Housing Shoulder (Da) | — | 765 mm | — |
| Dynamic Axial Rating Ca1 | — | — | 0 N |
| Maximum Rib Diameter Inner Ring (D1) | — | 684 mm | — |
| Static Radial Rating C0 | — | — | 2,590,000 N |
| Minimum Chamfer Dimension (R1 Min) | — | 4 mm | — |
| Extended Dynamic Rating Ce | — | — | 0 N |
| Axial Displacement (S) | — | 8.4 mm | — |
| Static Axial Rating C0A | — | — | 0 N |
| Minimum Rib Diameter Outer Ring (D1 Min) | — | 730.7 mm | — |
| Maximum Diameter Of Shaft Shoulder (Da Max) | — | 667 mm | — |
| Minimum Chamfer Dimension (Rmin) | — | 4 mm | — |
| Raceway Diameter Outer Ring (E) | — | 744 mm | — |
| Fatigue Load Limit, Radial (Cur) | — | 232,000 N | — |
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.