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STK MOTORS


Frameless permanent magnets brushless torque motors for direct drive

STK Direct Drive  motors have been designed for being integrated at the heart of servomechanisms with the aim to improve the performances of axis control of high torque motors.

Thus, the use of ALXION’s Direct Drive frameless torque motors offers adequate solutions regarding the improvement of dynamic performances and accuracy and allows to address applications with demanding constraints on volumes and weights.

Main characteristics

  • Continuous torque from 14.6 Nm up to 2708 Nm continuous in natural convection depending on size and up to 6100 Nm in fluid cooling.
  • Six external diameters from 145 mm up to 800 mm.
  • Internal diameter from 56 mm up to 630 mm.
  • Various available windings from 30 rpm up to 1500 rpm depending on type.
  • Rotor non dynamically balanced; if needed balancing has to be made by the user on assembled rotor
  • For environment and integration constraints, please request our STK handbooks for assembly
  • Frameless design: one rotor and one stator to be integrated inside user’s mechanics

Advantages

  • High dynamics
  • No reducer
  • No backlash
  • High accuracy servo
  • Suppression of maintenance
  • Simplification of servo-mechanism
  • Optimization of servo-mechanism costs
  • Noise reduction
  • Functional optimization and machine simplification

Characteristics of the range

The range of frameless STK torque motors  includes 6 sizes from 145 mm up to 800 mm available in four different lengths per size and two standard rated speeds. They are particularly convenient for direct drive motors applications thanks to their outstanding compacity and accuracy.

STK MOTORS RANGE – Complementary data

145 STK Motors

  • Continuous torque in natural convection: from 14.6 up to 47.4 Nm
  • Continuous torque in fluid cooling: from 29.9 up to 120 Nm
  • Peak torque: from 55 up to 220 Nm
  • Rated speed: from 500 up to 1500 RPM
  • Hollow shaft: diameter 56 mm standard

190 STK Motors

  • Continuous torque in natural convection: from 36 up to 111 Nm
  • Continuous torque in fluid cooling: from 71.4 up to 274 Nm
  • Peak torque: from 119 up to 476 Nm
  • Rated speed: from 500 up to 1500 RPM
  • Hollow shaft diameter 72mm standard

300 STK Motors

  • Continuous torque in natural convection: from 98 up to 295 Nm
  • Continuous torque in fluid cooling: from 235 up to 910 Nm
  • Peak torque: from 387 up to 1548 Nm
  • Rated speed: from 200 up to 800 RPM
  • Hollow shaft: diameter 190 mm standard

400 STK Motors

  • Continuous torque in natural convection: from 225 up to 700 Nm
  • Continuous torque in fluid cooling: from 467 up to 1846 Nm
  • Peak torque: from 880 up to 3520 Nm
  • Rated speed: from 200 up to 800 RPM
  • Hollow shaft: diameter 258 mm standard

500 STK Motors

  • Continuous torque in natural convection: from 210 up to 1185 Nm
  • Continuous torque in fluid cooling: from 412 up to 3590 Nm
  • Peak torque: from 768 up to 6912 Nm
  • Rated speed: from 50 up to 600 RPM
  • Hollow shaft: diameter 350 mm standard

800 STK Motors

  • Continuous torque in natural convection: from 610 à 2708 Nm
  • Continuous torque in fluid cooling: from 1039 à 6100 Nm
  • Peak torque: from 1828 à 10968 Nm
  • Rated speed: from 30 à 250 mn-1
  • Hollow shaft: diameter 630 mm standard

download General description of STK Motors
General description of STK Motors
download Summary of Motors STK
Summary of Motors STK
download the Complete Catalogue of Motors STK
the Complete Catalogue of Motors STK
download the Application note about ST and STK Torque Motors
Application note

STK frameless motors integral with fluid cooling circuitry

  • All STK frameless motors can be supplied with an integral fluid cooling-jacket and inlet / outlet
  • STK frameless motors can also be supplied with an external cooling circuitry wound around the stator housing
  • The integral cooling circuitry is particularly interesting in applications of plastic injection moulding machines

Motor STK with integral “cooling-jacket” and inlet/outlet
Motor STK with external cooling-circuitry
Codification of STK Motors
Codification of STK Motor
STK Motors cabling
STK Motors cabling

Download External drawings

Download External drawings

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