Cross-brand designation analysis
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You entered NJ344M. This table explores the base group NJ344; it does not preserve or approve every requested suffix. Search your complete marking first →
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One base designation across loaded brands
Exact designations rank first. Dimensions, suffixes and other technical differences remain visible so the result is not mistaken for an interchangeability declaration.
Dimensions verified
“NJ344” across 3 loaded brands
At least two brands share the same bore, outside diameter and width. Use Custom Compare when you want to choose exact suffix variants yourself.
Technical comparison
Choose exact variants instead →Brand differences at a glance
| Parameter | TIMKENNJ344EMA220 × 460 × 88 mm | NSKNJ344M220 × 460 × 88 mm | KOYONJ344220 × 460 × 88 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | TIMKEN | NSK | KOYO |
| Designation | NJ344EMA | NJ344M | NJ344 |
| Product family | Cylindrical 1-Row | Cylindrical roller bearing | Single-row / NJ |
| Detailed type | Cylindrical roller bearings | Cylindrical roller bearings | Cylindrical roller bearings |
| Series | EX27739 | — | — |
| Bore diameterd | 220 mm | 220 mm | 220 mm |
| Outside diameterD | 460 mm | 460 mm | 460 mm |
| WidthB | 88 mm | 88 mm | 88 mm |
| Basic dynamic load ratingC | 1650 kN | 1470 kN | 1490 kN |
| Basic static load ratingC0 | 1930 kN | 1570 kN | 1570 kN |
| Fatigue load limitPu | — | — | 176 kN |
| Limiting speednG | — | — | 1100 r/min |
| Mass≈m | 74.9 kg | — | 79 kg |
| Sealing | Open | — | — |
| Cage | Window Brass cage | Machined brass | — |
| Boundary dimensions | |||
| Bearing widthB | — | 88 mm | — |
| Minimum bearing chamferr min. | — | 5 mm | — |
| Minimum secondary bearing chamferr1 min. | — | 5 mm | — |
| Roller inscribed circle diameterFw | — | 284 mm | — |
| Calculation Factors | |||
| K Factor | 0.00 | — | — |
| Y1 Factor | 0.00 | — | — |
| Y2 Factor | 0.00 | — | — |
| Y0 Factor | 0.00 | — | — |
| E Factor | 0.00 | — | — |
| Cg Factor | 0.1582 | — | — |
| Catalogue reference mass | |||
| Approximate shared-row mass — not separately stated for each rib arrangement | — | 74.6 kg | — |
| Classification | |||
| Official Category Path | — | — | Cylindrical roller bearings - Single-row - NJ |
| Official Classification 1 | — | — | Cylindrical roller bearings / Single-row / NJ |
| Construction | |||
| Single-row construction type | — | NJ | — |
| Rib arrangement | — | Two outer-ring ribs; one inner-ring rib | — |
| Standard cage material | — | Machined brass | — |
| Standard cage marking | — | M | — |
| Other cage codes listed for this catalogue row | — | None listed in this row | — |
| Precision — designation omission rule | — | ISO Normal when no precision suffix is specified | — |
| Clearance identification — verify interchangeability | — | No clearance suffix shown. CN omission applies to interchangeable designs; do not infer a numerical clearance. | — |
| Optimized crowning note | — | No optimized-crowning asterisk on this row | — |
| Load ratings — standard cage | |||
| Basic dynamic radial load ratingCr | — | 1470000 N | — |
| Basic static radial load ratingC0r | — | 1570000 N | — |
| Lubrication-qualified speed — standard cage | |||
| Thermal speed rating — oil bath | — | 1400 r/min | — |
| Mechanical limiting speed — forced oil circulation | — | Not stated in this catalogue row | — |
| Limiting speed — grease | — | 1200 r/min | — |
| Limiting speed — oil bath | — | 1500 r/min | — |
| Manufacturer Identity | |||
| Material Number | 000000000190019704 | — | — |
| Official Class Key | — | — | 040-010-000 |
| World Assembly Part Number | NJ344EMA | — | — |
| Inner Ring Part Number | 220ARJE03 | — | — |
| Outer Ring Part Number | 220ERUE03 | — | — |
| Drawing Number | M103792 | — | — |
| Upc | 0087796302877 | — | — |
| Official Source System | CORE BP - DS DF | — | — |
| Official Last Run | 2026-08-23T20:02:48.51 | — | — |
| Mounting dimensions — shown arrangement | |||
| Minimum shaft shoulder diameterdb min. | — | 240 mm | — |
| Maximum housing shoulder diameterDa max. | — | 440 mm | — |
| Maximum adjusting-ring diameter (NU/NJ arrangement)db max. | — | 278 mm | — |
| Maximum adjacent fillet radiusra max. | — | 4 mm | — |
| Maximum secondary adjacent fillet radiusrb max. | — | 4 mm | — |
| Product Identity | |||
| Type Description | Cylindrical 1-Row | — | — |
| Construction | Single Row Cylindrical Roller Bearing | Imperial Series | 8.6614 in Bore | 18.1102 in OD | 3.4646 in Width | Open | Cylindrical Bore | Machined Window Brass Cage | C0 Clearance | — | — |
| Number Of Rows | 1 | — | — |
| Tapered Bore | N | — | — |
| Technical Data | |||
| d | — | — | 460 mm |
| B | — | — | 88 mm |
| R(Min.) | — | — | 5 mm |
| R1(Min.) | — | — | 5 mm |
| Overall Width | 0.000 mm | — | — |
| Fw | — | — | 284 mm |
| Radial Rating | 1,650,000 N | — | — |
| Ew | — | — | - mm |
| Axial Rating | 0 N | — | — |
| Basic Load Ratings : Cr | — | — | 1490 kN |
| Dynamic Rating C1 | 1,650,000 N | — | — |
| Basic Load Ratings : C0R | — | — | 1570 kN |
| Dynamic Rating C90 | 0 N | — | — |
| Fatigue Load Limit : Cu | — | — | 176 kN |
| Dynamic Axial Rating Ca90 | 0 N | — | — |
| Limiting Speeds(Grease Lub.) | — | — | 1100 min-1 |
| Dynamic Axial Rating Ca1 | 0 N | — | — |
| Limiting Speeds(Oil Lub.) | — | — | 1500 min-1 |
| Static Radial Rating C0 | 1,930,000 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.) | — | — | 440 mm |
| Ra(Max.) | — | — | 4 mm |
| Rb(Max.) | — | — | 4 mm |
| Mass(Refer.) | — | — | 79.0 kg |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.