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PMA

Mini servo actuator with DC motor


PMA Series Servo Actuators combine a highly dynamic DC motor with encoder and PMG Gearbox to create a dynamic compact servo actuator.

Available in four sizes with gear ratios of 50 and 100:1, the actuators can provide a maximum torque from 0.39 to 20 Nm. The accurate positioning of the actuator ensures stable machine characteristics and short cycle times.

Compatible with many common servo controllers on the market, PMA Mini Servo Actuators enable easy setup of compact servo axes – especially for small quantities.

Customer Benefits and Features

Optimised for your applications

  • Reduced material use
  • Greater energy efficiency
  • Lower production costs
  • Small machine footprint
  • Flexible control configuration
  • Consistent quality
  • High availability
  • Reduced Total Cost of Ownership
  • Reduced maintenance costs

Features

  • Compact, lightweight design
  • Third party controller compatibility
  • Excellent lifetime precision

Engineering Data

 Engineering Data

DC Servo Actuators PMA

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Combinations

Size 5A 8A 11A 14A
Reduction 50
100
 
 
motorwinding 01
 
 
Motor feedback E256ML
E500ML
 
 

Available

On request

Not available

Technical data

Ordering code

Define the ordering code for your customised product,
in consideration with your requested product characteristics.

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Change size Unit PMA-11A
Ratio i [] 50 100
Maximum output torque Tmax [Nm] 5 7.9
Maximum output speed nmax [min-1] 100 50
Continuous stall torque T0 [Nm] 2.8 5.9
Transmission accuracy [arcmin] < 2 < 2
Lost Motion [arcmin] < 3 < 3
Torsional stiffness K3 [x103 Nm/rad] 1160 1400
Ambient operating temperature [°C] 0 ... 40 0 ... 40
Output bearing
Dynamic radial load FR dyn (max) [N] 245 245
Dynamic axial load FA dyn (max) [N] 196 196
Dynamic tilting moment Mdyn (max) [Nm] 4,9 4,9
Change size Unit PMA-14A
Ratio i [] 50 100
Maximum output torque Tmax [Nm] 14 20
Maximum output speed nmax [min-1] 100 50
Continuous stall torque T0 [Nm] 4.3 9.3
Transmission accuracy [arcmin] < 2 < 2
Lost Motion [arcmin] < 3 < 3
Torsional stiffness K3 [x103 Nm/rad] 2250 4270
Ambient operating temperature [°C] 0 ... 40 0 ... 40
Output bearing
Dynamic radial load FR dyn (max) [N] 392 392
Dynamic axial load FA dyn (max) [N] 392 392
Dynamic tilting moment Mdyn (max) [Nm] 4,9 4,9
Change size Unit PMA-5A
Ratio i [] 50 100
Maximum output torque Tmax [Nm] 0.39 0.69
Maximum output speed nmax [min-1] 180 90
Continuous stall torque T0 [Nm] 0.2 0.45
Transmission accuracy [arcmin] < 4.5 < 4.5
Lost Motion [arcmin] < 4 < 4
Torsional stiffness K3 [x103 Nm/rad] 55 100
Ambient operating temperature [°C] 0 ... 40 0 ... 40
Output bearing
Dynamic radial load FR dyn (max) [N] 59 59
Dynamic axial load FA dyn (max) [N] 29 29
Dynamic tilting moment Mdyn (max) [Nm] 0.3 0.3
Change size Unit PMA-8A
Ratio i [] 50 100
Maximum output torque Tmax [Nm] 2.7 3.5
Maximum output speed nmax [min-1] 120 60
Continuous stall torque T0 [Nm] 0.96 2.06
Transmission accuracy [arcmin] < 2.5 < 2.5
Lost Motion [arcmin] < 3 < 3
Torsional stiffness K3 [x103 Nm/rad] 389 690
Ambient operating temperature [°C] 0 ... 40 0 ... 40
Output bearing
Dynamic radial load FR dyn (max) [N] 196 196
Dynamic axial load FA dyn (max) [N] 98 98
Dynamic tilting moment Mdyn (max) [Nm] 1.96 1.96
Select motor feedback
Untersetzung i [] 50 100
Massenträgheitsmoment ohne Bremse Jout [kgm2] 109 437
Select motor feedback
Untersetzung i [] 50 100
Massenträgheitsmoment ohne Bremse Jout [kgm2] 257 1026
Select motor feedback
Untersetzung i [] 50 100
Massenträgheitsmoment ohne Bremse Jout [kgm2] 3,68 14,7
Select motor feedback
Untersetzung i [] 50 100
Massenträgheitsmoment ohne Bremse Jout [kgm2] 32,8 131
Länge (ohne Bremse) L [mm] 157
Gewicht ohne Bremse m [kg] 0,5
Länge (ohne Bremse) L [mm] 173
Gewicht ohne Bremse m [kg] 0,76
Länge (ohne Bremse) L [mm] 84
Gewicht ohne Bremse m [kg] 0,07
Länge (ohne Bremse) L [mm] 127
Gewicht ohne Bremse m [kg] 0,25

Motor feedback

Encoder
Type Incremental Incremental
Code E256ML E500ML
Spannungsversorgung 5 VDC +-5% 5 VDC +-5%
Signalform square wave square wave

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 Engineering Data

Engineering Data

DC Servo Actuators PMA

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2D-/3D-CAD files

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All technical terms are described in detail in the Planning Guide.