WBB1-8700-2Z SKF 4×1.2×2.5mm ra max. 0.1 mm Deep groove ball bearings
| Bearing number | WBB1-8700-2Z |
| Size (mm) | 4×1.2×2.5 |
| Brand | SKF |
| Bore Diameter (mm) | 4 |
| Outer Diameter (mm) | 1.2 |
| Width (mm) | 2.5 |
| d | 1.2 mm |
| D | 4 mm |
| B | 2.5 mm |
| d1 | 2.15 mm |
| D2 | 3.5 mm |
| r1,2 – min. | 0.1 mm |
| da – min. | 2 mm |
| da – max. | 2.1 mm |
| Da – max. | 3.5 mm |
| ra – max. | 0.1 mm |
| Basic dynamic load rating – C | 0.062 kN |
| Basic static load rating – C0 | 0.016 kN |
| Fatigue load limit – Pu | 0.001 kN |
| Reference speed | 220000 r/min |
| Limiting speed | 110000 r/min |
| Calculation factor – kr | 0.02 |
| Calculation factor – f0 | 6.4 |
| d1 ≈ | 2.15 mm |
| D2 ≈ | 3.5 mm |
| r1,2 min. | 0.1 mm |
| da min. | 2 mm |
| da max. | 2.1 mm |
| Da max. | 3.5 mm |
| ra max. | 0.1 mm |
| Basic dynamic load rating C | 0.062 kN |
| Basic static load rating C0 | 0.016 kN |
| Fatigue load limit Pu | 0.001 kN |
| Calculation factor kr | 0.02 |
| Calculation factor f0 | 6.4 |
| Mass bearing | 0.0001 kg |
Detailed Parameters
parameter：
| 61924 ZZ Deep groove ball bearings | Bore Diameter :120mm ，Brand:CX ，Size :120x165x22mm ，Outer Diameter :165mm |
| 7010HVDUJ74 Angular contact ball bearings | Outer Diameter :80mm ，Size :50x80x32mm ，Brand:SNR ，Bore Diameter :50mm |
| 5206N Angular contact ball bearings | Width :23.8mm ，Size :30x62x23.8mm ，Outer Diameter :62mm ，Brand:NACHI ，Bore Diameter :30mm ，d:30 mm |
| 6918DDU Deep groove ball bearings | Size :90x125x18mm ，Outer Diameter :125mm ，Bore Diameter :90mm ，Width :18mm ，Brand:NSK |
| 3981/3920 Tapered roller bearings | Bore Diameter :58.738mm ，Width :30.162mm ，Outer Diameter :112.712mm ，Brand:Timken ，Size :58.738x112.712x30.162mm |
| 2315-K-M-C3 Self aligning ball bearings | Size :75x160x55mm ，Brand:FAG ，Outer Diameter :160mm ，Bore Diameter :75mm |
| S7304B Angular contact ball bearings | Outer Diameter :52mm ，Brand:ZEN ，Width :15mm ，Size :20x52x15mm ，d:20 mm ，Bore Diameter :20mm |
| K6x10x13TN Needle roller bearings | Outer Diameter :10mm ，Fw:6 mm ，Brand:SKF ，Bore Diameter :6mm |
| 7007UG/GMP42 Angular contact ball bearings | Size :35x62x14mm ，Brand:NTN ，Outer Diameter :62mm ，Bore Diameter :35mm |
| 6303T1X Deep groove ball bearings | Outer Diameter :47mm ，Size :17x47x14mm ，Bore Diameter :17mm ，Brand:NSK |
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