The Bosch Rexroth Indramat MAC090B-0-ND-4-C/110-A-1/WA609XX is part of the MAC AC Servo Motors series by Bosch Rexroth Indramat. This high-precision MAC Permanent Magnet Motor features natural convection cooling and a torque constant of 0.58 Nm/A at 20 °C. Designed for hi-tech applications such as NC machine tools, automotive production lines and automation systems, it delivers precise variable speed control for position loops. It includes a power connector on Side A, an integrated B encoder and a standard blocking brake for enhanced reliability.
Equipped with a clamping delay of 20 ms and a holding torque (standard brake) of 6.5 Nm, the MAC090B handles rapid acceleration and deceleration with minimal mechanical stress. Insulation class F and a thermal time constant of 60 (45) min ensure the motor remains within safe temperatures during continuous operation. The robust housing meets IP65 protection for natural convection cooling and IP24 for blower-unit radial cooling, safeguarding against dust and water ingress. A heavy-duty variant offers a nominal current of 0.7 A and reduced mass, expanding application versatility.
The MAC090B’s lightweight design, approximately 3.3 kg for axial cooling and 0.5 kg for heavy-duty versions, reduces spindle inertia to optimize dynamic performance. With compatibility for standard blocking brakes and integrated tachofeedback, it enables accurate position and speed evaluation under demanding conditions. Rated for ambient temperatures from 0 to +45 °C, this servo motor ensures consistent efficiency and longevity. Certified to industrial protection standards, it delivers durable, high-efficiency operation and superior control benefits in complex automation environments.
Clamping delay (standard)
20 ms
Holding torque (standard brake)
6.5 Nm
Insulation
F
Mass (axial cooling)
approx. 3.3 kg
Mass (heavy-duty)
0.5 kg
Nominal current (heavy-duty)
0.7 A
Protection category
IP 65
Protection category blower unit (radial cooling)
IP 24
Thermal time constant
60 (45) min
Torque constant at 20 ?C
0.58 Nm/A
AC Servo Motor
MAC
Motor Size
90
Motor Length
B
Cooling Type
Natural Convection