Mjd Dynabloc

Backlash from 1 to 10 arcmin (Low backlash BASIC/MEDIUM/EXPERT)
Ratios from 5 to 90 (one stage) 

Mjd Dynabloc is a range of high-precision geared servo motors for applications requiring reduced backlash.

The high-efficiency worm gearbox provides very low backlash and very high torsional stiffness. This guarantees motor stability even at dynamic operation with high inertia loads. The gearbox’s right angle design and multiple mounting positions help to save space for easy integration into machines. The worm design offers the added advantage of quiet operation.

The Mjd Dynabloc range can be fitted with Unimotor hd or fm servo motors depending on the required application:

Unimotor hd – designed for pulse duty applications requiring high dynamics
Unimotor fm – ideal for continuous duty applications with high inertia loads


  • Very low backlash
  • Very High torsional stiffness
  • High-efficiency worm gearbox
  • High inertia option available with fm motor
  • Space-saving right angle design
  • Multiple shafts and mounting positions for easy integration into machines
  • Quiet operation
  • Maintenance free
  • Lubricated for life​

Main Characteristics

Rated torqueN.m23 to 668
Max acceleration torqueN.mUp to 1100
Gearbox ratio5 to 90
BacklasharcminBASIC: 10 MEDIUM: 5 EXPERT: 1
MotorUnimotor hd or Unimotor fm
Motor speedrpm3000
Efficiency%Depending on ratio
Output shaftPlain shaft with key Keyed hollow shaft or unkeyed with shrink disk
MountingFoot or flange with tapped holes (B14)