Cross-brand designation analysis
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Explore products that share a base designation across loaded brands, with dimensional agreement and data gaps shown clearly.
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You entered 311-2ZNR. This table explores the base group 311; 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
“311” 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 | SKF31155 × 120 × 29 mm | INA311-KDD-B55 × 120 × 29 mm | TIMKEN311W55 × 120 × 29 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | INA | TIMKEN |
| Designation | 311 | 311-KDD-B | 311W |
| Product family | Deep groove ball bearings | — | Radial Deep-Groove Ball |
| Detailed type | Deep groove ball bearing with filling slots | Self-aligning deep groove ball bearings | Deep groove ball bearings |
| Series | — | 311 | 300 |
| Bore diameterd | 55 mm | 55 mm | 55 mm |
| Outside diameterD | 120 mm | 120 mm | 120 mm |
| WidthB | 29 mm | 29 mm | 29 mm |
| Basic dynamic load ratingC | 79.2 kN | 76.5 kN | 93.7 kN |
| Basic static load ratingC0 | 67 kN | 47.5 kN | 66.9 kN |
| Fatigue load limitPu | 2.85 kN | — | — |
| Reference speednref | 10000 r/min | — | — |
| Limiting speednG | 6300 r/min | — | — |
| Mass≈m | 1.5 kg | 1.27 kg | 1.54 kg |
| Internal clearance | CN | — | — |
| Sealing | Without | — | Open |
| Cage | Sheet metal | — | Steel cage |
| Bearing material | Bearing steel | — | — |
| Lubricant | None | — | — |
| Minimum operating temperatureTmin | — | -20 °C | — |
| Maximum operating temperatureTmax | — | 120 °C | — |
| Calculation Factors | |||
| K Factor | — | — | 0.00 |
| Y1 Factor | — | — | 0.00 |
| Y2 Factor | — | — | 0.00 |
| Y0 Factor | — | — | 0.50 |
| E Factor | — | — | 0.00 |
| Cg Factor | — | — | 0.0512 |
| Engineering — Abutment dimensions | |||
| Diameter of shaft abutmentd a | min. 66 mm | — | — |
| Diameter of housing abutmentD a | max. 109 mm | — | — |
| Radius of shaft or housing filletr a | max. 2 mm | — | — |
| Engineering — Calculation data | |||
| Minimum load factork r | 0.05 | — | — |
| Engineering — Dimensions | |||
| Shoulder diameterd 1 | ≈ 75.34 mm | — | — |
| Recess diameterD 2 | ≈ 103.7 mm | — | — |
| Chamfer dimensionr 1,2 | min. 2 mm | — | — |
| Logistics | |||
| Product net weight | 1.5 kg | — | — |
| eClass code | 23-05-08-01 | — | — |
| UNSPSC code | 31171504 | — | — |
| Manufacturer Identity | |||
| Schaeffler Product Code | — | 357189 | — |
| Material Number | — | — | 000000000100006501 |
| Base Type | — | 311 | — |
| World Assembly Part Number | — | — | 311W |
| Old Designation | — | ["311 KDDB"] | — |
| Upc | — | — | 0087796067172 |
| Gpsd Group | — | I04 | — |
| Product Line Id | — | 72 | — |
| X Life Marking | — | n.r. | — |
| Official Source System | — | — | CORE BP - DS DF |
| Official Last Run | — | — | 2026-08-23T20:02:47.93 |
| Product identity | |||
| Official product category | Deep groove ball bearings | — | — |
| Official taxonomy path | /products/rolling-bearings/ball-bearings/deep-groove-ball-bearings | — | — |
| Structure group ID | BB1_001_101 | — | — |
| Available from SKF | Yes | — | — |
| Remanufacturable | No | — | — |
| Product Identity | |||
| Type Description | — | — | Radial Deep-Groove Ball |
| Construction | — | Plummer block housing unit 3..-KDD-B, RIBB sheet metal PB | Single Row Deep Groove Ball Bearing | Imperial Series | 2.1654 in Bore | 4.7244 in OD | 1.1420 in Width | Open | Cylindrical Bore | Steel Cage | C0 Clearance | ISO P0 Tolerance |
| Number Of Rows | 1 | — | 1 |
| Tapered Bore | — | — | N |
| Short Description | — | Self-aligning deep groove ball bearings | — |
| Properties | |||
| Filling slots | With | — | — |
| Locating feature, bearing outer ring | Without | — | — |
| Bore type | Cylindrical | — | — |
| Matched arrangement | No | — | — |
| Radial internal clearance | CN | — | — |
| Material, bearing | Bearing steel | — | — |
| Coating | Without | — | — |
| Relubrication feature | Without | — | — |
| Indicative carbon footprint for new product | 5.6 kg CO 2 e | — | — |
| Technical Data | |||
| Overall Width | — | — | 0.000 mm |
| Radial Rating | — | — | 104,000 N |
| Axial Rating | — | — | 0 N |
| Bore Diameter (D) | — | 55 mm | — |
| Dynamic Rating C1 | — | — | 93,700 N |
| Outside Diameter (Dsp) | — | 120 mm | — |
| Dynamic Rating C90 | — | — | 0 N |
| Width, Inner Ring (B) | — | 29 mm | — |
| Dynamic Axial Rating Ca90 | — | — | 0 N |
| Basic Dynamic Load Rating, Radial (Cr) | — | 76,500 N | — |
| Dynamic Axial Rating Ca1 | — | — | 0 N |
| Basic Static Load Rating, Radial (C0R) | — | 47,500 N | — |
| Static Radial Rating C0 | — | — | 66,900 N |
| Operating Temperature Min. (Tmin) | — | -20 °C | — |
| Extended Dynamic Rating Ce | — | — | 104,000 N |
| Operating Temperature Max. (Tmax) | — | 120 °C | — |
| Static Axial Rating C0A | — | — | 0 N |
| Width, Outer Ring (C) | — | 29 mm | — |
| Sealing Total Width (C2) | — | 27.6 mm | — |
| Outside Diameter Seal (D1) | — | 96.7 mm | — |
| Shoulder Diameter Inner Ring (D1) | — | 73.8 mm | — |
| Minimum Chamfer Dimension (Rmin) | — | 2 mm | — |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.