Page 1002 - Rollingbearings

17 Sensor bearing units
Rotor positioning Applications

bearings • absolute angular position information for
electric motor control in, for example:
– belt-driven starter generators
SKF Rotor positioning bearings (ig. 22, – traction motors
table 6) are customized units with optimized – e-superchargers and e-turbochargers
mechanical integration between a magnetic • shaft speed detection or low-resolution
impulse ring and a bearing in an application angular position in, for example:
The integrated units: – crankshafts
– transmission shafts
• allow the use of nearly all bearing types
• allow high speeds and temperatures
• generate strong magnetic impulses that
are related to the rotor angular position
17 • can deliver the magnetic ield in the axial Fig. 22
or radial direction, on a through shaft or at Rotor positioning bearing
the end of a shaft
• are very robust under severe operating
conditions as a result of their high mag-
netic ield strength

Table 6
Rotor positioning bearings

B 2
B 1

D 1 d D 2

Designation Bearing Principal dimensions Number of Limiting Operating
size pairs of poles speed temperatures
d D 1 D 2 B 1 B 2
– – mm – – °C (°F)

BMD-0123/ZJ6 6202 15 35 55 11 14,5 6 22 000 –40 to 150 (–40 to 300)
BMD-0123/ZJ8 6202 15 35 55 11 14,5 8 22 000 –40 to 150 (–40 to 300)

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