Cross-brand designation analysis
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You entered 2318-K-M-C3. This table explores the base group 2318; it does not preserve or approve every requested suffix. Search your complete marking first →
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One base designation across loaded brands
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Dimensions verified
“2318” 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 | SKF2318 M90 × 190 × 64 mm | FAG2318-M90 × 190 × 64 mm | NSK231890 × 190 × 64 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | FAG | NSK |
| Designation | 2318 M | 2318-M | 2318 |
| Product family | Self-aligning ball bearings | — | Self-aligning ball bearing |
| Detailed type | Self-aligning ball bearings | Self-aligning ball bearings | Self-aligning ball bearings |
| Series | — | 2318 | — |
| Bore diameterd | 90 mm | 90 mm | 90 mm |
| Outside diameterD | 190 mm | 190 mm | 190 mm |
| WidthB | 64 mm | 64 mm | 64 mm |
| Basic dynamic load ratingC | 151 kN | 156 kN | 170 kN |
| Basic static load ratingC0 | 57 kN | 58 kN | 57.5 kN |
| Fatigue load limitPu | 2.5 kN | 3.1 kN | — |
| Reference speednref | 6300 r/min | 5000 r/min | — |
| Limiting speednG | 4500 r/min | 5100 r/min | — |
| Mass≈m | 8.55 kg | 8.576 kg | 7.87 kg |
| Precision class | — | PN — Normal (ISO 492:2023) | — |
| Internal clearance | CN | CN (Group N) — Normal internal clearance | — |
| Sealing | Without | Without — Not sealed | — |
| Cage | Machined brass | M — Solid brass cage, ball guided | — |
| Bearing material | Bearing steel | — | — |
| Lubricant | None | Without — Bearing not greased | — |
| Minimum operating temperatureTmin | — | -30 °C | — |
| Maximum operating temperatureTmax | — | 150 °C | — |
| Boundary dimensions | |||
| Bearing widthB | — | — | 64 mm |
| Minimum bearing chamferr min. | — | — | 3 mm |
| Calculation factors | |||
| Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Ye | — | 0.39 | — |
| Dynamic axial load factorY1 | — | 1.64 | — |
| Dynamic axial load factorY2 | — | 2.53 | — |
| Static axial load factorY0 | — | 1.71 | 1.7 |
| Capabilities & suitability | |||
| Radial load capacity | — | Yes | — |
| Axial load capacity in one direction | — | Yes | — |
| Axial load capacity in both directions | — | Yes | — |
| Suitable for grease lubrication | — | Yes | — |
| Suitable for oil lubrication | — | Yes | — |
| Unsealed design | — | Yes | — |
| Staticangularerrorandmisalignment | — | Yes | — |
| Dynamicangularerrorandmisalignment | — | Yes | — |
| Construction | |||
| Bore construction | — | — | Cylindrical bore |
| Dimensions | |||
| Minimum chamfer dimensionrmin | — | 3 mm | — |
| Minimum chamfer dimensionrmin | — | 0.118 in | — |
| Shoulder diameter outer ringD1 | — | 159.81 mm | — |
| Shoulder diameter outer ringD1 | — | 6.292 in | — |
| Shoulder diameter inner ringd1 | — | 115.7 mm | — |
| Shoulder diameter inner ringd1 | — | 4.555 in | — |
| Overhang rolling elementC1 | — | 0.1 mm | — |
| Overhang rolling elementC1 | — | 0.004 in | — |
| Engineering — Abutment dimensions | |||
| Abutment diameter shaftd a | min. 104 mm | — | — |
| Abutment diameter housingD a | max. 176 mm | — | — |
| Fillet radiusr a | max. 3 mm | — | — |
| Engineering — Calculation data | |||
| Permissible angular misalignmentα | 3 ° | — | — |
| Calculation factork r | 0.05 | — | — |
| Limiting valuee | 0.37 | — | — |
| Calculation factorY 0 | 1.8 | — | — |
| Calculation factorY 1 | 1.7 | — | — |
| Calculation factorY 2 | 2.6 | — | — |
| Engineering — Dimensions | |||
| Shoulder diameter inner ringd 1 | ≈ 121 mm | — | — |
| Shoulder diameter outer ringD 1 | ≈ 162.2 mm | — | — |
| Chamfer dimensionr 1,2 | min. 3 mm | — | — |
| Engineering — Engineering specifications | |||
| Bore type | Cylindrical | — | — |
| Equivalent-load factors | |||
| Dynamic load ratio thresholde | — | — | 0.38 |
| Dynamic axial factor above thresholdY2 | — | — | 2.6 |
| Dynamic axial factor at or below thresholdY3 | — | — | 1.7 |
| Load ratings | |||
| Basic dynamic radial load ratingCr | — | — | 170000 N |
| Basic static radial load ratingC0r | — | — | 57500 N |
| Logistics | |||
| Product net weight | 8.55 kg | — | — |
| eClass code | 23-05-08-06 | — | — |
| UNSPSC code | 31171532 | — | — |
| Lubrication-qualified speed | |||
| Limiting speed with grease | — | — | 2800 r/min |
| Limiting speed with oil | — | — | 3600 r/min |
| Main Dimensions & Performance Data | |||
| Basic dynamic load rating, radialCr | — | 156,000 N | — |
| Basic dynamic load rating, radialCr | — | 35,071.942 lbf | — |
| Basic static load rating, radialC0r | — | 58,000 N | — |
| Basic static load rating, radialC0r | — | 13,039.568 lbf | — |
| Fatigue load limit, radialCur | — | 3,100 N | — |
| Fatigue load limit, radialCur | — | 696.942 lbf | — |
| Manufacturer Identity | |||
| Schaeffler Product Code | — | 366259 | — |
| Base Type | — | 2318 | — |
| Old Designation | — | ["2318M"] | — |
| Gpsd Group | — | S03 | — |
| Product Line Id | — | 14 | — |
| SAP material number | — | 0384396970000 | — |
| Base product | — | 2305080601 | — |
| Bearing X designation | — | 2318-M | — |
| Mounting Manager ID | — | 2318-M | — |
| Grease application ID | — | 2318-M | — |
| Mounting dimensions | |||
| Minimum shaft shoulder diameterda min. | — | — | 103 mm |
| Maximum housing shoulder diameterDa max. | — | — | 177 mm |
| Maximum adjacent fillet radiusra max. | — | — | 2.5 mm |
| Minimum diameter shaft shoulderda min | — | 104 mm | — |
| Minimum diameter shaft shoulderda min | — | 4.094 in | — |
| Maximum diameter of housing shoulderDa max | — | 176 mm | — |
| Maximum diameter of housing shoulderDa max | — | 6.929 in | — |
| Maximum fillet radiusra max | — | 2.5 mm | — |
| Maximum fillet radiusra max | — | 0.098 in | — |
| Product characteristics | |||
| Bore typeZ | — | Cylindrical | — |
| Type of SealWithout | — | Not sealed | — |
| Tolerance classPN | — | Normal (ISO 492:2023) | — |
| Radial internal clearanceCN (Group N) | — | Normal internal clearance | — |
| Product identity | |||
| Official product category | Self-aligning ball bearings | — | — |
| Official taxonomy path | /products/rolling-bearings/ball-bearings/self-aligning-ball-bearings | — | — |
| Structure group ID | BJ1_001 | — | — |
| Available from SKF | Yes | — | — |
| Remanufacturable | No | — | — |
| Product Identity | |||
| Construction | — | Self-aligning ball bearing 23..-M, solid brass cage | — |
| Short Description | — | Self-aligning ball bearing | — |
| Properties | |||
| Retaining feature, inner ring | None | — | — |
| Locating feature, bearing outer ring | Without | — | — |
| Number of rows | 2 | — | — |
| Radial internal clearance | CN | — | — |
| Tolerance class | Normal | — | — |
| Material, bearing | Bearing steel | — | — |
| Coating | Without | — | — |
| Relubrication feature | Without | — | — |
| Indicative carbon footprint for new product | 31.6 kg CO 2 e | — | — |
| Reference mass | |||
| Approximate catalogue mass | — | — | 7.87 kg |
| Technical Data | |||
| Bore Diameter (D) | — | 90 mm | — |
| Outside Diameter (D) | — | 190 mm | — |
| Width (B) | — | 64 mm | — |
| Basic Dynamic Load Rating, Radial (Cr) | — | 156,000 N | — |
| Basic Static Load Rating, Radial (C0R) | — | 58,000 N | — |
| Operating Temperature Min. (Tmin) | — | -30 °C | — |
| Limiting Speed (Ng) | — | 5,100 1/min | — |
| Operating Temperature Max. (Tmax) | — | 150 °C | — |
| Reference Speed (Nϑr) | — | 5,000 1/min | — |
| Fatigue Load Limit, Radial (Cur) | — | 3,100 N | — |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | — | 0.39 | — |
| Minimum Diameter Shaft Shoulder (Da Min) | — | 104 mm | — |
| Shoulder Diameter Inner Ring (D1) | — | 115.7 mm | — |
| Dynamic Axial Load Factor (Y1) | — | 1.64 | — |
| Maximum Diameter Of Housing Shoulder (Da Max) | — | 176 mm | — |
| Minimum Chamfer Dimension (Rmin) | — | 3 mm | — |
| Overhang Rolling Element (C1) | — | 0.1 mm | — |
| Maximum Fillet Radius (Ra Max) | — | 2.5 mm | — |
| Shoulder Diameter Outer Ring (D1) | — | 159.81 mm | — |
| Dynamic Axial Load Factor (Y2) | — | 2.53 | — |
| Static Axial Load Factor (Y0) | — | 1.71 | — |
| Temperature range | |||
| Operating temperature min.Tmin | — | -30 °C | — |
| Operating temperature min.Tmin | — | -22 °F | — |
| Operating temperature max.Tmax | — | 150 °C | — |
| Operating temperature max.Tmax | — | 302 °F | — |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.