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DC Motor-Tach - Data Sheets
DC Motor-Tachogenerators
Linear currrent / torque and speed / Back EMF characteristics
Stable single axis design
No cogging or preferred rotor position
No iron losses
Extremely low current consumption
Low starting voltage
Low rotor inertia for extremely fast acceleration and braking
Extremely light and compact
Custom systems available from design to production
Higher power to volume than other DC motor technologies
High precision gearboxes available in all sizes
Note: Bold indicates that the product is part of the Express Prototyping Program. *Available voltages and versions vary.
Tachogenerators
MetricEnglish
Series PDF Diameter
(mm)
Length
(mm)
Operating speed
max. continuous

(rpm)
Tolerance of the EMF Constant
(±%)
EMF Constant up to
(mV/rpm)
Reversion
error

(±%)
Works with

2225

22 25 5,000 1 4.3 0.2
Motor-Tachogenerator Combinations
MetricEnglish
Series PDF Diameter
(mm)
Length
(mm)
Operating speed
max. continuous

(rpm)
Tolerance of the EMF Constant
(±%)
EMF Constant up to
(mV/rpm)
Reversion
error

(±%)
Works with

1841...S

18 41 5,000 2 1 0.2

2251...S

22 51 5,000 2 1.5 0.2
FAULHABER GROUP - We create motion