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SKF Encoder Bearing

Model BMB-6208/080S2/UB108A (with 4-Pin AMPSEAL connector) and BMB-6208/080S2/UB008A (free cable end)

SKF motor encoder model BMB-6208/080S2/UB108A or BMB-6208/080S2/UB008A is an encoder for rotating motion control. It uses a compact and robust sensor that produces an incremental encoder signal. The sensor is accurate down to zero r/min. An integrated active circuit (requiring an external voltage supply) in the sensor body contains two Hall effect cells that produce an output signal consisting of two square waves.

The signals can be interpreted by motor controllers in different ways:

• The direction of rotation can be determined from the phase shift, when the rising edge of a signal first appears.
• Slow speeds can be determined by measuring the time between two electrical events, events being the rising and falling edge on either square wave.
• High speeds can be measured by counting the number of electrical events within a given time period.

The two square waves are 90° out of phase with each other. This phase shift changes sign with the direction of rotation. The presence of two signals in quadrature enables a processing unit to multiply the number of angular position increments per revolution. For example, using a standard SKF sensor bearing with 64 pulses per revolution and a standard electronic interface that can detect the rising (Low/High) and falling (High/Low) times of each of the two signals, it is possible to obtain 256 electrical events per revolution, which translates to an angular resolution of 1,4°.

SKF motor encoder units provide accurate and reliable signals for effective motor control and are 100% tested for period accuracy, duty cycle and phase shift during manufacture.

The SKF Motor Encoder Unit is a compact, integrated unit consisting of:

• A pre-lubricated SKF Explorer deep groove ball bearing in the 62 series with a snap ring groove in the outer ring and an RS1 contact seal
• An impulse ring
• A sensor body
• A cable outlet and connecting cable

For more details , please see the product datasheet of SKF motor encoder unit (PDF format).

Cable connection:

SKF BMB-6208/080S2/UB108A motor encoder units are available as standard with a 4-Pin AMPSEAL connector (designation suffix 108A). The standard cable length is about 370 mm.

A mating connector will be provided for the encoder BMB-6208/080S2/UB108A.

• Suffix 108A: with a 4-Pin AMPSEAL connector
• Suffix 008A: with a free cable end

For alternative connectors or cable lengths, please contact us.

For more information about the alternative model of SKF encoders, please contact us.

SKF Encoder Bearing

Model BMB-6208/080S2/UB108A (with 4-Pin AMPSEAL connector) and BMB-6208/080S2/UB008A (free cable end)

SKF motor encoder model BMB-6208/080S2/UB108A or BMB-6208/080S2/UB008A is an encoder for rotating motion control. It uses a compact and robust sensor that produces an incremental encoder signal. The sensor is accurate down to zero r/min. An integrated active circuit (requiring an external voltage supply) in the sensor body contains two Hall effect cells that produce an output signal consisting of two square waves.

The signals can be interpreted by motor controllers in different ways:

• The direction of rotation can be determined from the phase shift, when the rising edge of a signal first appears.
• Slow speeds can be determined by measuring the time between two electrical events, events being the rising and falling edge on either square wave.
• High speeds can be measured by counting the number of electrical events within a given time period.

The two square waves are 90° out of phase with each other. This phase shift changes sign with the direction of rotation. The presence of two signals in quadrature enables a processing unit to multiply the number of angular position increments per revolution. For example, using a standard SKF sensor bearing with 64 pulses per revolution and a standard electronic interface that can detect the rising (Low/High) and falling (High/Low) times of each of the two signals, it is possible to obtain 256 electrical events per revolution, which translates to an angular resolution of 1,4°.

SKF motor encoder units provide accurate and reliable signals for effective motor control and are 100% tested for period accuracy, duty cycle and phase shift during manufacture.

The SKF Motor Encoder Unit is a compact, integrated unit consisting of:

• A pre-lubricated SKF Explorer deep groove ball bearing in the 62 series with a snap ring groove in the outer ring and an RS1 contact seal
• An impulse ring
• A sensor body
• A cable outlet and connecting cable

For more details , please see the product datasheet of SKF motor encoder unit (PDF format).

Cable connection:

SKF BMB-6208/080S2/UB108A motor encoder units are available as standard with a 4-Pin AMPSEAL connector (designation suffix 108A). The standard cable length is about 370 mm.

A mating connector will be provided for the encoder BMB-6208/080S2/UB108A.

• Suffix 108A: with a 4-Pin AMPSEAL connector
• Suffix 008A: with a free cable end

For alternative connectors or cable lengths, please contact us.

For more information about the alternative model of SKF encoders, please contact us.