Miniature ball bearing comparison
Axial deep groove ball bearings
Metric dimensions
d | D | H | Designation | d1 | D1 | de min | De max | Balls n x Ø | |
mm | mm | mm | mm | mm | mm | mm | mm | ||
3 | 8 | 3.5 | B 308X | 3.2 | 7.8 | 6 | 5 | 0.10 | 6 x 1.588 |
4 | 10 | 4 | B 410X | 4.2 | 9.8 | 7.5 | 6.5 | 0.10 | 6 x 1.588 |
5 | 12 | 4 | B 512X | 5.2 | 11.8 | 9 | 8 | 0.10 | 8 x 1.588 |
6 | 14 | 5 | B 614X | 6.2 | 13.8 | 10.5 | 9.5 | 0.15 | 7 x 2.381 |
7 | 17 | 6 | B 717X | 7.2 | 16.8 | 13 | 11 | 0.15 | 8 x 2.778 |
8 | 19 | 7 | B 819X | 8.2 | 18.8 | 14.5 | 12.5 | 0.25 | 8 x 3.175 |
9 | 20 | 7 | B 920X | 9.2 | 19.8 | 15.5 | 13.5 | 0.25 | 8 x 3.175 |
d | D | H | Designation | n Max | axial load ratings dynamic | statisch | |
mm | mm | mm | 1/min | Ca N | Coa N | ||
3 | 8 | 3.5 | B 308X | 15000 | 783 | 676 | |
4 | 10 | 4 | B 410X | 15000 | 728 | 676 | |
5 | 12 | 4 | B 512X | 13000 | 832 | 901 | |
6 | 14 | 5 | B 614X | 10000 | 1657 | 1702 | |
7 | 17 | 6 | B 717X | 10000 | 2378 | 2662 | |
8 | 19 | 7 | B 819X | 8000 | 3045 | 3493 | |
9 | 20 | 7 | B 920X | 8000 | 2981 | 3692 |
The ball bearings are produced in quality P5P or better
Ø D | |||||||
Tolerance class | Ø d | ≤17 mm | ≥19 mm | H | Axial run-out | ||
P5 | 0/-8 μm | 0/-11 μm | 0/-13 μm | 0/-100 μm | 3 μm | recommended tolerances: Shafts: +4 / -4 μm Housing: +8 / 0 μm | |
P4 | 0/-7 μm | 0/-11 μm | 0/-13 μm | 2 μm |