| Model | 21309 EK |
| Metering system | Metric |
| Bearing type | Roller |
| Roller bearing type | Ball shaped |
| Aperture type | Tapered Bore, Taper 1:12 |
| Load direction | Radial force and axial force |
| Structure | Double column |
| Seal type | Open |
| Inside diameter | 45 mm |
| Inside diameter tolerance | +0.025mm to 0 |
| Outer diameter | 100 mm |
| Outer diameter tolerance | -0.015mm to 0 |
| Height | 25 mm |
| Height tolerance | -0.06mm to 0 |
| Inner ring shoulder diameter | 65.3 mm |
| Outer ring shoulder diameter | 88 mm |
| Lubrication groove width | 6 mm |
| Lubrication hole diameter | 3 mm |
| Chamfer size | min.1.5 mm |
| Ferrule material | 52100 Chrome steel |
| Roller material | 52100 Chrome steel |
| Cage material | Steel |
| dynamic radial load | 29 lbf |
| Static radial load | 28551 lbf |
| Maximum speed (X1000 rpm) | 8.5 |
| Lubricant | Lubricant added |
| temperature range | -30° to 200 °C |
| clearance range | Standard (applicable to C3/C4/C5) |
| RoHS standard | Conform |
| REACH standard | Conform |
| Weight | 0.97 kg |
