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| Parameter | SKF3312 A60 × 130 × 54 mm | KOYO331260 × 130 × 54 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | SKF | KOYO |
| Designation | 3312 A | 3312 |
| Product family | Angular contact ball bearings | Double-row / Open |
| Detailed type | Double row angular contact ball bearing | Angular contact ball bearings |
| Bore diameterd | 60 mm | 60 mm |
| Outside diameterD | 130 mm | 130 mm |
| WidthB | 54 mm | 54 mm |
| Basic dynamic load ratingC | 127 kN | 156 kN |
| Basic static load ratingC0 | 95 kN | 132 kN |
| Fatigue load limitPu | 4.05 kN | 6.85 kN |
| Reference speednref | 5600 r/min | — |
| Limiting speednG | 5000 r/min | 3100 r/min |
| Mass≈m | 2.93 kg | 3.24 kg |
| Sealing | Without | Open |
| Cage | Sheet metal | — |
| Bearing material | Bearing steel | — |
| Lubricant | None | — |
| Classification | ||
| Official Category Path | — | Angular contact ball bearings - Double-row - Open |
| Official Classification 1 | — | Angular contact ball bearings / Double-row / Open |
| Dimensions | ||
| Contact angle | 30.0 ° | — |
| Engineering — Abutment dimensions | ||
| Abutment diameter shaftd a | min. 72 mm | — |
| Abutment diameter housingD a | max. 118 mm | — |
| Fillet radiusr a | max. 2 mm | — |
| Engineering — Calculation data | ||
| SKF performance class | SKF Explorer | — |
| Calculation factork r | 0.07 | — |
| Limiting valuee | 0.8 | — |
| Calculation factorX | 0.63 | — |
| Calculation factorY 0 | 0.66 | — |
| Calculation factorY 1 | 0.78 | — |
| Calculation factorY 2 | 1.2 | — |
| Engineering — Dimensions | ||
| Shoulder diameter inner ringd 1 | ≈ 84.2 mm | — |
| Shoulder diameter outer ringD 1 | ≈ 110 mm | — |
| Chamfer dimension inner ringr 1,2 | min. 2.1 mm | — |
| Distance pressure point(s)a | 78 mm | — |
| Logistics | ||
| Product net weight | 2.93 kg | — |
| eClass code | 23-05-08-03 | — |
| UNSPSC code | 31171531 | — |
| Manufacturer Identity | ||
| Official Class Key | — | 020-030-000 |
| Product identity | ||
| Official product category | Angular contact ball bearings | — |
| Official taxonomy path | /products/rolling-bearings/ball-bearings/angular-contact-ball-bearings/double-row-angular-contact-ball-bearings | — |
| Structure group ID | BA2_001 | — |
| Available from SKF | Yes | — |
| Remanufacturable | No | — |
| Properties | ||
| Contact type | Normal contact (two-point contact) | — |
| Number of rows | 2 | — |
| Locating feature, bearing outer ring | Without | — |
| Ring type | One-piece inner and outer rings | — |
| Arrangement of contact angle (double-row bearing) | Back-to-back (O) | — |
| Matched arrangement | No | — |
| Universal matching bearing | No | — |
| Axial internal clearance | CN | — |
| Material, bearing | Bearing steel | — |
| Coating | Without | — |
| Relubrication feature | Without | — |
| Indicative carbon footprint for new product | 10.8 kg CO 2 e | — |
| Technical Data | ||
| d | — | 130 mm |
| B | — | 54 mm |
| R(Min.) | — | 2.1 mm |
| Basic Load Ratings : Cr | — | 156 kN |
| Basic Load Ratings : C0R | — | 132 kN |
| Fatigue Load Limit : Cu | — | 6.85 kN |
| Limiting Speeds(Grease Lub.) | — | 3100 min-1 |
| Limiting Speeds(Oil Lub.) | — | 4200 min-1 |
| Load Center Spread : A | — | 87.4 mm |
| Da(Min.) | — | 72 mm |
| Da(Max.) | — | 118 mm |
| Ra(Max.) | — | 2 mm |
| Mass(Refer.) | — | 3.24 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.