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Application — Printing

BLDC Motor For Printing Machines And Web Handling.

Print registration depends on speed stability. A brushless DC motor holds RPM within fractions of a percent across roller drives, ink fountains and paper feeders, giving you consistent color laydown and web tension from the first impression to the last. Shenghe builds low-cogging BLDC motors with encoder feedback specifically for flexographic, gravure and label printing lines.

  • 24V / 48V with encoder feedback
  • 100W — 1000W rated power range
  • Low cogging torque for smooth roller drive
  • Planetary gearbox options for ink systems
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Why BLDC In Printing

What Makes Brushless Motors The Standard For Modern Print Drives

  • Low cogging torque eliminates banding and registration drift
  • Encoder feedback holds speed within +/-0.1% for multi-station sync
  • No brush dust contamination in clean print environments
  • 85-92% efficiency reduces heat buildup near ink and substrates
  • Compact frame fits inside existing press cabinets and roller housings
  • 20,000+ hour life with zero brush replacement downtime

Typical Printing Motor Spec Range

ParameterRange
VoltageDC 24V / 48V
Rated power100 W — 1000 W
Motor speed1000 — 4000 RPM
Gear ratio5:1 — 50:1 (planetary)
Output torque0.5 Nm — 80 Nm
Cogging torque< 1% rated torque
FeedbackHall sensor + incremental encoder (1000 PPR standard)
InterfaceAnalog 0-10V, PWM, CAN bus, RS-485

Typical Printing Use Cases

  • Web tension control: Unwind and rewind roller drives maintaining constant tension as roll diameter changes
  • Impression roller drive: Synchronized main cylinder drive for flexographic and gravure presses
  • Ink fountain motor: Low-speed geared drive for consistent ink film delivery to anilox rollers
  • Paper feeder: Sheet separation, pile height adjustment and feed roller acceleration
  • Label applicator: High-speed peel-and-place with precise start/stop positioning
  • Drying section fan: Variable-speed air knife and tunnel dryer blower drive
  • Slitter rewinder: Independent shaft drive for multi-lane slitting with differential tension

Technical Details For Print Engineers

  • Skewed stator design: Reduces cogging torque to below 1% for artifact-free printing
  • Encoder resolution: 1000 PPR standard, 2500 PPR optional for high-registration work
  • Thermal class F insulation: Continuous operation at full load without derating
  • Low inertia rotor: Fast acceleration for start/stop label and carton printing
  • EMC shielding: Meets EN 55011 Class B for operation near sensitive print electronics
  • Mounting options: Flange, foot, or direct coupling to roller shaft

Motor For Your Printing Line?

Send your roller diameter, web speed, tension requirement and communication protocol. We recommend a motor and controller combination matched to your press and quote within one working day.

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