Technical specifications

The BR series servomotors are designed to offer the highest dynamic performance and are used in
applications such as CNC lathes, servopumps, metalworking machines, woodworking machines,
plastic and rubber processing machines.

The use of Neodymium Iron Boron magnets with a high energy product makes it possible to obtain motors with high specific power capable of withstanding large overloads without the risk of demagnetisation.

The magnetic circuit has been designed to allow the motors to produce a sinusoidal F.e.m. with reduced torque ripple.

The low rotor inertias guarantee the possibility of high acceleration and deceleration.

Standard features

• Winding: three-phase star without accessible neutral

• Winding insulation: class H according to CEI 2-3 (2000)

• Dimensioning: class F (dTmax=105K) according to CEI EN 60034-1 (2000)

• Degree of protection: IP54 according to CEI EN 60034-5 (2001)

• Position sensor: 2-pole resolver

• Cooling: IC 410 (motor without servo-ventilation), IC 416 (servo-ventilated motor) according to CEI EN 60034-6 (1997)

• Grade of balancing: G 2.5 in accordance with ISO 1940-1 (1993) (balancing with half key for shafts with key CEI 2-23 (1993))

• Bearings: lubricated for life

• Thermal protection: thermal protector with normally closed contact. Operating temperature 130±5°C. (Maximum voltage 250Vac , maximum current 5Aac)

• Construction type: IM B5 according to CEI EN 60034-7 (1993)

• Operating position: any

• Colour: black RAL 9005

• Reference conditions: ambient temperature +40°C, max. altitude 1000m a.s.l.

• Storage temperature: -10°C ÷ +70°C

• Reference switching frequency: 8kHz


• Position sensor:

- digital encoder + Hall probes,,

- sinusoidal encoder,

- EnDat absolute encoder,

- Hyperface absolute encoder,

- DSL encoder,

- Biss encoder

• Degree of protection: IP65 (refer to data in manual)

• Flying connector for power and signal IP54 or IP65

• Parking brake

• Keyless shaft

• Design: IM B35 according to IEC EN 60034-7 (1993)

• Oil seal (to be requested only if oil bath coupling is envisaged)

• Oil drain hole (for size 8 and 9)

• Special executions according to customer specifications