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| Parameter | TIMKENNJ428MAC4140 × 360 × 82 mm | KOYONJ428140 × 360 × 82 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | NJ428MAC4 | NJ428 |
| Product family | Cylindrical 1-Row | Single-row / NJ |
| Detailed type | Cylindrical roller bearings | Cylindrical roller bearings |
| Series | NCS-141211 | — |
| Bore diameterd | 140 mm | 140 mm |
| Outside diameterD | 360 mm | 360 mm |
| WidthB | 82 mm | 82 mm |
| Basic dynamic load ratingC | 1080 kN | 1090 kN |
| Basic static load ratingC0 | 1160 kN | 1020 kN |
| Fatigue load limitPu | — | 124 kN |
| Limiting speednG | — | 1600 r/min |
| Mass≈m | 47 kg | 47.2 kg |
| Sealing | Open | — |
| Cage | Window Brass cage | — |
| Calculation Factors | ||
| K Factor | 0.00 | — |
| Y1 Factor | 0.00 | — |
| Y2 Factor | 0.00 | — |
| Y0 Factor | 0.00 | — |
| E Factor | 0.00 | — |
| Cg Factor | 0.1237 | — |
| Classification | ||
| Official Category Path | — | Cylindrical roller bearings - Single-row - NJ |
| Official Classification 1 | — | Cylindrical roller bearings / Single-row / NJ |
| Manufacturer Identity | ||
| Material Number | 000000000190080968 | — |
| Official Class Key | — | 040-010-000 |
| World Assembly Part Number | NJ428MA | — |
| Inner Ring Part Number | 140ARJA04 | — |
| Outer Ring Part Number | 140ERUA04 | — |
| Drawing Number | M961918 | — |
| Upc | 0013992476333 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:47.403 | — |
| Product Identity | ||
| Type Description | Cylindrical 1-Row | — |
| Construction | Single Row Cylindrical Roller Bearing | Imperial Series | 5.5118 in Bore | 14.1732 in OD | 3.2283 in Width | Open | Cylindrical Bore | Machined Window Brass Cage | C4 Clearance | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 360 mm |
| B | — | 82 mm |
| R(Min.) | — | 5 mm |
| R1(Min.) | — | 5 mm |
| Overall Width | 0.000 mm | — |
| Fw | — | 198 mm |
| Radial Rating | 1,080,000 N | — |
| Ew | — | - mm |
| Axial Rating | 0 N | — |
| Basic Load Ratings : Cr | — | 1090 kN |
| Dynamic Rating C1 | 1,080,000 N | — |
| Basic Load Ratings : C0R | — | 1020 kN |
| Dynamic Rating C90 | 0 N | — |
| Fatigue Load Limit : Cu | — | 124 kN |
| Dynamic Axial Rating Ca90 | 0 N | — |
| Limiting Speeds(Grease Lub.) | — | 1600 min-1 |
| Dynamic Axial Rating Ca1 | 0 N | — |
| Limiting Speeds(Oil Lub.) | — | 2200 min-1 |
| Static Radial Rating C0 | 1,160,000 N | — |
| Sd1 | — | - mm |
| Extended Dynamic Rating Ce | 0 N | — |
| B1 | — | - mm |
| Static Axial Rating C0A | 0 N | — |
| B2 | — | - mm |
| Da(Min.) | — | - mm |
| Db(Min.) | — | - mm |
| Db(Max.) | — | - mm |
| Dc(Min.) | — | - mm |
| Dd(Min.) | — | - mm |
| Da(Max.) | — | 340 mm |
| Ra(Max.) | — | 4 mm |
| Rb(Max.) | — | 4 mm |
| Mass(Refer.) | — | 47.2 kg |
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.