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Application — Packaging Machinery

BLDC Motor For Packaging Machines That Run All Shift.

Packaging lines need motors that hold constant tension on film rolls, index a labeler to the dot and run 16-24 hours a day without brush service. Shenghe BLDC motors ship with matched BLD / BLDB controllers supporting speed, torque and position modes through RS485 Modbus or CAN bus.

  • Closed-loop torque-mode film tension control
  • RS485 Modbus and CAN bus interface
  • Low noise for food and pharma environments
  • 20,000+ hour service life, no brush wear
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Why BLDC For Packaging

Replacing Brushed DC, Stepper and Low-End Servo

  • Replaces brushed DC on film feeders — no brush dust on food-contact surfaces
  • Replaces stepper on labelers — no missed steps when adhesive load varies
  • Replaces low-end servo on sealer jaws — same closed-loop control at roughly half the price
  • Torque mode holds film tension on changing roll diameter
  • Speed mode holds bag-making rate under load change
  • Low audible noise suits pharma cleanrooms and food plants

Packaging Motor Spec Range

ParameterRange
VoltageDC 24V / 48V / 110V / 220V
Rated power50 W — 1500 W
Rated speed2000 — 4000 RPM
Rated torque0.15 — 5 Nm (motor only)
With gearboxUp to 100 Nm output
Control modesSpeed, torque, position
InterfaceRS485 Modbus, CAN, analog 0-5V, PWM
ProtectionIP54 standard / IP65 optional

Axes We Cover On A Typical Packaging Line

  • Film unwind and rewind: Torque-mode tension control, dancer arm or load cell feedback
  • Form-fill-seal film feed: Closed-loop speed to match bag length
  • Labeler roller: Position-mode indexing to register mark
  • Cap feeder and chuck: Speed mode with slip clutch protection
  • Auger filler: Speed mode for volumetric dose control
  • Sealer jaw: Position mode for open-close cycle timing
  • Cartoner flap pusher: Speed mode synchronized with main line encoder
  • Reject kicker: Fast position-mode pulse on vision trigger

Why RS485 And CAN Matter Here

  • Multi-drop RS485 Modbus can address up to 32 motors on one bus — fewer PLC I/O points
  • CAN bus integrates directly with embedded motion controllers common in packaging
  • Parameter upload / download during recipe change — no manual potentiometer tuning
  • Fault codes read back to HMI for operator diagnostics
  • Firmware update through the same bus, no USB cable runs to the factory floor
  • Coordinated start / stop on line event triggers

Motor Sizing For Your Packaging Machine?

Send voltage, axis type, load torque, speed, interface and quantity. Our engineers recommend a matched motor + controller set and send a quotation. Or request the catalog to plan the packaging drive tree first.

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