Harmonic Linear Drive (“HLD”) Technical Data

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The HLD is available in 3 versions as shown above: HLD with internal rollers, HLD with single external rail and HLD with dual external rails. In order to see a comparison chart of all the HLD actuators, please click here.

The HLD is available in a standard commercial grade and a high precision grade. The data shown below is for the standard commercial grade. It demonstrates that the HLD is comparable to a ball screw actuator in accuracy but with an important difference which is that the HLD is available with zero backlash inherent gear reduction built in.

Unlike conventional ball screw actuators, the HLD accuracy extends to travel lengths from 100mm to 3.3 meters as a standard product. The cost however, is far lower than commercial grade ball screws for travel in excess of 600 mm.

The HLD is commonly used instead of regular belt slides because it is a low cost system due to the elimination of expensive gear reduction. The HLD reduction is built in.

The following data is for the standard commercial grade which is also used as a belt slide. The high precision grade is custom built to the requirements of the customer’s application. The result of testing by our engineers was calculated to ISO 230-2 standards. This was a more rigorous standard than is typically used by manufacturers of ball screws or belt slides. The data confirms ball screw type performance. However, this data is for a complete system. Ball screw and belt slide competitors typically do not include data on a system which would mean that their accuracy must be diminished due to losses caused by gearheads, and low encoder resolution in the system.

Comments:

The closest analogies to common ball screw technology are:

1. “E” approximates lad error given by v300p value. Grade Ct10 E=210, Ct7 E=52, Ct5 E=23 (L70 and XL100 use Ct5 grade).
2. “B” reversal error approximates backlash. Typical Ct5 to Ct10 ball screws may have 10-70.
3. The HLD includes the Animatics SmartMotor™ model SM2315DT as standard. Other Animatics SmartMotors™ in NEMA frame sizes 17 and 23 are available. For motor performance ratings see the data on the SmartMotors™. Motor mounts are available for frame NEMA sizes 17 and 23.
4. The HLD system with SmartMotor™ integrates the following into one system:
   • The linear belt system components
   • Inherent gear reduction
   • Brushless DC Servo Motor
   • Encoder
   • Amplifier
   • Controller with microprocessor
   • I/O, 5 V with 24 V. available with accessory cable.
   • Network capabilit
5. Accessories are available including power supplies, cables, 24V I/O conversion cable, and many more including two choices of low cost excellent CND software packages.

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