The Advantages of a Direct Drive Approach

K-Series motors provide machine designers with the advantage of lower costs, increased reliability, and improved performance.


  • Zero mechanical connections between motor and load
  • No inertia match required (no compliance / wind up)         
  • Stiffer / more responsive system (easier to tune)
  • No maintenance / repair of mechanical linkages (couplings, etc..)
  • Smaller envelope for tight spaces
  • 6 frame sizes with multiple stack lengths
  • Rated torques up to 26 Nm (227 in-lbs)
  • Multiple winding selections for optimized performance
  • Lower cost solution


Frameless Motor Sales Sheet
K Series Kit Motors Frameless Kit Motors Are the Reliable and Compact Approach to Build Your Own High-Performance Servo Motor.

Lower costs, increased reliability and improved performance are benefits you will enjoy when designing in frameless kit motors like the Parker K-Series.

Frameless Motor Kit Selection

Frame Size Stack Lenth Range Continuous Stall Torque Peak Torque Rotor Inertia Core Loss Winding-Amb Thermal Resist Pole Count Motor Weight
mm in Nm in-lb Nm in-lbs Kg-m2 lb-in-sec2 Pc °C/W # kg lb
K032 12.7 0.5 0.08 0.7 0.26 2.3 3.2-7 2.8-6 0.06 3.44 4 0.07 0.15
25.4 1 0.14 1.2 0.45 3.9 6.3-7 5.6-6 0.12 3.44 4 0.12 0.27
50.8 2 0.23 2 0.73 6.4 1.3-6 1.1-5 0.24 3.44 4 0.26 0.57
K044 12.7 0.5 0.21 1.8 0.66 5.8 1.412-6 1.25-5 0.24 2.36 6 0.1 0.3
25.4 1 0.36 3.2 1.16 10.2 2.9-6 2.6-5 0.49 2.36 6 0.22 0.49
50.8 2 0.59 5.2 1.88 16.5 5.8-6 5.1-5 1.11 2.36 6 0.4 0.88
K064 12.7 0.5 0.59 5.1 1.86 16.3 9.0-6 8.0-5 0.78 1.68 8 0.29 0.63
25.4 1 1.03 9.1 3.28 28.9 1.8-5 1.6-4 1.6 1.68 8 0.57 1.26
50.8 2 1.73 15.2 5.48 48.2 3.6-5 3.2-4 3.23 1.68 8 1.13 2.49
K089 12.7 0.5 1.47 12.9 4.67 41.1 3.7-5 3.3-4 2.14 1.02 12 0.5 1.1
25.4 1 2.59 22.8 8.23 72.4 7.8-6 6.9-5 4.42 1.02 12 1 2.2
50.8 2 4.31 37.9 13.69 120.5 1.5-4 1.3-3 8.95 1.02 12 1.99 4.39
K178 12.7 0.5 8.44 74.2 26.77 235.5 4.7-4 4.1-3 9.1 0.5 18 2.4 5.29
25.4 1 15.16 133.4 48.12 423.5 9.2-4 8.1-3 18.7 0.5 18 3.71 8.18
50.8 2 25.74 226.5 81.74 719.3 1.8-3 1.6-2 37.4 0.5 18 6.34 13.98

Applications

Parker's direct drive motion construction gives equipment designers the advantages of lower costs, increased reliability and improved performance in key markets.
Aerospace
Automotive
Machine Tool
Robotics
Semiconductor
For more information or specific questions, email hps.technical@support.parker.com
©2022 Parker Hydraulic Pump and Power Systems Division