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| Parameter | SKF4304 ATN920 × 52 × 21 mm | FAG4304-BB-TVH20 × 52 × 21 mm | KOYO430420 × 52 × 21 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | FAG | KOYO |
| Designation | 4304 ATN9 | 4304-BB-TVH | 4304 |
| Product family | Deep groove ball bearings | — | Double-row |
| Detailed type | Double row deep groove ball bearing | Deep groove ball bearings | Deep groove ball bearings |
| Series | — | 4304 | — |
| Bore diameterd | 20 mm | 20 mm | 20 mm |
| Outside diameterD | 52 mm | 52 mm | 52 mm |
| WidthB | 21 mm | 21 mm | 21 mm |
| Basic dynamic load ratingC | 23.4 kN | 26 kN | 24.3 kN |
| Basic static load ratingC0 | 16 kN | 16.8 kN | 17 kN |
| Fatigue load limitPu | 0.68 kN | 0.87 kN | 1.25 kN |
| Reference speednref | 22000 r/min | 9300 r/min | — |
| Limiting speednG | 12000 r/min | 13100 r/min | 8300 r/min |
| Mass≈m | 0.204 kg | 0.212 kg | 0.227 kg |
| Precision class | — | PN — Normal (ISO 492:2023) | — |
| Internal clearance | CN | CN (Group N) — Normal internal clearance | — |
| Sealing | Without | — | — |
| Cage | Non-metallic | TVH — Solid cage made of glass-fiber reinforced polyamid PA66 | — |
| Bearing material | Bearing steel | — | — |
| Lubricant | None | GA14 — Ball bearing grease, low noise | — |
| Minimum operating temperatureTmin | — | -20 °C | — |
| Maximum operating temperatureTmax | — | 120 °C | — |
| Calculation factors | |||
| Calculation factorf0 | — | 13 | — |
| 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 | — |
| Unsealed design | — | Yes | — |
| Classification | |||
| Official Category Path | — | — | Deep groove ball bearings - Double-row |
| Official Classification 1 | — | — | Deep groove ball bearings / Double-row |
| Dimensions | |||
| Minimum chamfer dimensionrmin | — | 1.1 mm | — |
| Minimum chamfer dimensionrmin | — | 0.043 in | — |
| Shoulder diameter outer ringD1 | — | 42.45 mm | — |
| Shoulder diameter outer ringD1 | — | 1.671 in | — |
| Shoulder diameter inner ringd1 | — | 31.5 mm | — |
| Shoulder diameter inner ringd1 | — | 1.24 in | — |
| Engineering — Abutment dimensions | |||
| Diameter of shaft abutmentd a | min. 27 mm | — | — |
| Diameter of housing abutmentD a | max. 45 mm | — | — |
| Radius of shaft or housing filletr a | max. 1 mm | — | — |
| Engineering — Calculation data | |||
| Minimum load factork r | 0.06 | — | — |
| Calculation factorf 0 | 13.1 | — | — |
| Engineering — Dimensions | |||
| Shoulder diameterd 1 | ≈ 42.2 mm | — | — |
| Chamfer dimensionr 1,2 | min. 1.1 mm | — | — |
| Logistics | |||
| Product net weight | 0.204 kg | — | — |
| eClass code | 23-05-08-01 | — | — |
| UNSPSC code | 31171504 | — | — |
| Main Dimensions & Performance Data | |||
| Basic dynamic load rating, radialCr | — | 26,000 N | — |
| Basic dynamic load rating, radialCr | — | 5,845.324 lbf | — |
| Basic static load rating, radialC0r | — | 16,800 N | — |
| Basic static load rating, radialC0r | — | 3,776.978 lbf | — |
| Fatigue load limit, radialCur | — | 870 N | — |
| Fatigue load limit, radialCur | — | 195.594 lbf | — |
| Manufacturer Identity | |||
| Schaeffler Product Code | — | 357028 | — |
| Official Class Key | — | — | 010-040-000 |
| Base Type | — | 4304 | — |
| Old Designation | — | ["4304BB.TVH"] | — |
| Gpsd Group | — | S03 | — |
| Product Line Id | — | 14 | — |
| SAP material number | — | 0219415480000 | — |
| Base product | — | 2305080102 | — |
| Bearing X designation | — | 4304-BB-TVH | — |
| Mounting Manager ID | — | 4304-BB-TVH | — |
| Grease application ID | — | 4304-BB-TVH | — |
| Mounting dimensions | |||
| Minimum diameter shaft shoulderda min | — | 27 mm | — |
| Minimum diameter shaft shoulderda min | — | 1.063 in | — |
| Maximum diameter of housing shoulderDa max | — | 45 mm | — |
| Maximum diameter of housing shoulderDa max | — | 1.772 in | — |
| Maximum fillet radiusra max | — | 1 mm | — |
| Maximum fillet radiusra max | — | 0.039 in | — |
| Product characteristics | |||
| Design variantB | — | Bearing without filling slot | — |
| Tolerance classPN | — | Normal (ISO 492:2023) | — |
| Changed internal design | — | B | — |
| Dimensional / heat stabilizationSN | — | Rings dimensional stabilized up to 120° | — |
| Radial internal clearanceCN (Group N) | — | Normal internal clearance | — |
| 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 | |||
| Construction | — | Deep groove ball bearing 43..-BB-TVH, double row, plastic cage | — |
| Short Description | — | Deep groove ball bearing | — |
| Properties | |||
| Filling slots | Without | — | — |
| Number of rows | 2 | — | — |
| 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 | 0.76 kg CO 2 e | — | — |
| Technical Data | |||
| d | — | — | 52 mm |
| B | — | — | 21 mm |
| R(Min.) | — | — | 1.1 mm |
| Bore Diameter (D) | — | 20 mm | — |
| Basic Load Ratings : Cr | — | — | 24.3 kN |
| Outside Diameter (D) | — | 52 mm | — |
| Basic Load Ratings : C0R | — | — | 17.0 kN |
| Width (B) | — | 21 mm | — |
| Fatigue Load Limit : Cu | — | — | 1.25 kN |
| Basic Dynamic Load Rating, Radial (Cr) | — | 26,000 N | — |
| Factor : F0 | — | — | 13.5 |
| Basic Static Load Rating, Radial (C0R) | — | 16,800 N | — |
| Limiting Speeds(Grease Lub.) | — | — | 8300 min-1 |
| Operating Temperature Min. (Tmin) | — | -20 °C | — |
| Limiting Speeds(Oil Lub.) | — | — | 11000 min-1 |
| Limiting Speed (Ng) | — | 13,100 1/min | — |
| Da(Max.) | — | — | 45.5 mm |
| Operating Temperature Max. (Tmax) | — | 120 °C | — |
| Ra(Max.) | — | — | 1 mm |
| Reference Speed (Nϑr) | — | 9,300 1/min | — |
| Mass(Refer.) | — | — | 0.227 kg |
| Calculation Factor (F0) | — | 13 | — |
| Fatigue Load Limit, Radial (Cur) | — | 870 N | — |
| Minimum Diameter Shaft Shoulder (Da Min) | — | 27 mm | — |
| Shoulder Diameter Inner Ring (D1) | — | 31.5 mm | — |
| Maximum Diameter Of Housing Shoulder (Da Max) | — | 45 mm | — |
| Minimum Chamfer Dimension (Rmin) | — | 1.1 mm | — |
| Maximum Fillet Radius (Ra Max) | — | 1 mm | — |
| Shoulder Diameter Outer Ring (D1) | — | 42.45 mm | — |
| Temperature range | |||
| Operating temperature min.Tmin | — | -20 °C | — |
| Operating temperature min.Tmin | — | -4 °F | — |
| Operating temperature max.Tmax | — | 120 °C | — |
| Operating temperature max.Tmax | — | 248 °F | — |
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.