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8KS synchronous motors

catalog title page - 8ks approved

Motors for high-performance applications

Motors with high torque at high speeds are required in the upper performance class. Servo motors from B&R's 8KS series are specially designed for these types of applications.

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  • Components and Modules

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.

Connection type

Due to their high performance, 8KS motors rely exclusively on terminal boxes for their power connection. The encoder is connected using an angled rotating connector.

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

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.

  • 8KSC_D Lüfterpositionen_big
     

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!

Cooling types L and M

8KS three-phase synchronous motors with cooling types L and M are externally cooled using an axial fan. Cooling type L permits flange mounting and base mounting on a B-type base. Cooling type M permits flange mounting and base mounting on the A and B side.

8KS mounting types

  • Mounting type
    Flange and B-foot
    Flange, A- and B-foot
       
    Flange foot mount
       
    Flange two feet mount
     
    8KSC
    Yes
    ---
    8KSD
    ---
    Yes
    8KSJ
    Yes
    ---
    8KSL
    Yes
    ---
    8KSM
    ---
    Yes
Sizes

8KS motors are available in various sizes (8 or 8 and 9) depending on their construction. These different sizes are indicated by a number represented by (c) in the model number. The larger the number, the larger the flange dimensions and power rating for the respective motor.

Overview

  • Cooling type
    Available sizes
     
    8
    9
    C
    Yes
    Yes
    D
    Yes
    --
    J
    Yes
    Yes
    L
    Yes
    Yes
    M
    Yes
    ---
Lengths

8KS three-phase synchronous motors are available in four different lengths. These different lengths are indicated by a number represented by (d) in the model number.

Overview

  • Length
    Available sizes
     
    8
    9
    2
    Yes
    Yes
    4
    Yes
    Yes
    5
    Yes
    Yes
    6
    Yes
    Yes
Load capacity of the shaft end and bearing

Bearing elements must not be subjected to shocks or impacts! Incorrect handling will reduce the service life and result in damage to the bearings.

Motor options

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).

8KS special motor options

The "Reinforced bearings" special motor option is offered for all 8KS motors. For 8KSC and 8KSD fan motors, a square filter can be selected as a special motor option.

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