BMB-6202-032S2-UB108A sensor bearing unit: specifications & signal data

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 17 sensor bearing units) · extracted 2026-10-19

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 17 sensor bearing units); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.

Cross references & equivalents

No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.

How the BMB-6202-032S2-UB108A model number is decoded

A 11 mm wide unit on a 15 mm bore with a 35 mm outside diameter; the deep groove ball raceway beneath the sensor track is rated C 7.8 kN dynamic and C0 3.75 kN static, with a fatigue load limit of Pu 0.16 kN. On the signal side the unit resolves 32 pulses per revolution with ±3% period accuracy and a 90° phase shift between its two channels, tolerated to ±30°; the bearing sets a mechanical limit of 13000 r/min. With C0 at 3.75 kN against C 7.8 kN the ratio works out to 2.08, the signature of a unit whose encoder track leaves the bearing raceway unchanged — the rolling elements do double duty as the position reference. Density of the design: a 15/35/11 mm envelope at 70 g, with a 550 mm cable and a AMP Superseal connector — the connector choice is the only electrical variant across the 32-pulse row. Each output pulse corresponds to 11.25° of rotation, and at the 13000 r/min limit the channel frequency is 6933.333 Hz — a figure to match against the receiver's input rating. the 15 mm bore places this in the small end of the range, where the compact rotor-mounted envelope suits light shafts and tight bearing seats BMB names a motor encoder unit built on a B-series deep groove ball bearing: the digits after the prefix repeat the embedded bearing size (6202), then /032S2 gives the two-signal pulse count, U the worldwide sales region, the cage letter A or B the ball-cage material, and the final connector block the electrical interface. The trailing 108A marks the AMP Superseal connector variant, the plug-and-play interface used where a sealed automotive connector is required; the cable is 5 mm longer than the free-end version of the same size. The U/B block means a glass-fibre reinforced PA66 ball cage, chosen for quiet running and resistance to the temperature swings of a rotor-mounted unit. typical applications include conveyor pulley speed and direction sensing, pump and fan rotor speed feedback and electric drive commutation and speed control this unit is commonly specified for conveyor pulley speed and direction sensing and pump and fan rotor speed feedback, where rotor position and speed sensing with a 32-pulse signal fits the controller's input in electric drive commutation and speed control the integrated bearing carries the shaft load while the sensor ring supplies the signal; the 70 g mass keeps the rotating inertia low the cable tail is part of the unit and cannot be shortened freely — terminating it outside the specified connector changes the screening and can corrupt the signal the output is a two-channel signal; reversing the channel polarity swaps the direction-of-rotation information even though the unit still counts correctly the two output channels must be screened as a pair; running them alongside motor power cables induces noise that the controller can read as extra pulses

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• the cable tail is part of the unit and cannot be shortened freely — terminating it outside the specified connector changes the screening and can corrupt the signal
• the output is a two-channel signal; reversing the channel polarity swaps the direction-of-rotation information even though the unit still counts correctly
• the two output channels must be screened as a pair; running them alongside motor power cables induces noise that the controller can read as extra pulses