8KS synchronous motors
8KS three-phase synchronous motors
The new 8KS motors extend B&R's range of motors up to 140 kW. The expansion opens up applications that demand a maximum standstill torque of 555 Nm and speeds of up to 3000rpm. Motors are available with axial and centrifugal fans as well as highly efficient water cooling. Together with B&R's servo pump control, these servo motors are excellent for high-power servo-hydraulic drive solutions. The optional reinforced bearings make it possible to implement belt and feed axes with very high torque. The single or double sided mounting base provides additional engineering freedom for modern machine concepts.
Advantages of B&R 8KS servo motors for your application
Three-phase synchronous motors from the 8KS series are permanently excited, electronically commutated synchronous motors for applications that require excellent dynamic characteristics and positioning precision.
- Nominal power up to 140 kW
- Fan cooling and optimized water cooling
- Encoders for functional safety available
- High dynamic torque at high speeds
- Power connected using terminal box, encoders connected using speedtec or ITEC circular connectors
Feedback systems specified to meet your needs
8KS three-phase synchronous motors are available with different encoder systems. As standard, they come equipped with Heidenhain EnDat encoders. Depending on the application, the customer can select between single-turn or multi-turn optical encoders. They allow operation without requiring homing procedures or additional measurement systems on the workpiece. The 8KS three-phase synchronous motors are also available with resolvers for machines with lower precision and speed requirements.
Embedded parameter chip
All relevant mechanical and electrical information and data is stored in the EnDat encoder used for 8KS three-phase synchronous motors. This means that the user doesn't have to configure settings on the servo drive. As soon as the encoder is connected to the servo drive and the power is applied to the electronics, the motor is automatically identified. The motor sends its rated parameters and limit parameters to the servo drive. The drive then automatically determines the current limits and current control parameters required for optimal control of the motor. The user things that the user has to optimize are the speed and position controllers. The integrated commissioning environment in B&R Automation StudioTM provides all necessary support.
In addition to assistance during commissioning, routine service work is also simplified, and motors can be exchanged without having to take extra time to set parameters.
Cooling types C and D
8KS three-phase synchronous motors with cooling types C and D are externally cooled using a centrifugal fan. Two different mounting directions can be ordered (position A to the left and position B to the right). Cooling type C permits flange mounting and base mounting on a B-type base. Cooling type D permits flange mounting and base mounting on the A and B side.
Cooling type J
8KS three-phase synchronous motors with cooling type J are externally cooled using a highly efficient water cooling system. Size 8KSJ9 has two independent cooling circuits. The connection direction for size 8 8KSJ motors is always to the right. Size 9 8KSJ motors must always be connected on both sides. 8KSJ permits flange mounting and base mounting on a B-type base. The foot mounting on the A-side is not possible with this cooling type for mechanical reasons!
8KS mounting types
Load capacity of the shaft end and bearing
8KS three-phase synchronous motors can be delivered with various options depending on the cooling type, size and length:
- With various nominal speeds
- With or without a holding brake
- With a smooth or keyed shaft
- With air or water cooling
The nominal speed is listed as part of the model number in the form of a 3-digit code (nnn). This code represents the nominal speed divided by 100. The respective combination of other motor options is listed as part of the model number in the form of a 2-digit code (ff).