Dunkermotoren BG65X50SI – Compact Integrated BLDC Motor for Precise Speed-Controlled Drives

The Dunkermotoren BG65X50SI is a 65 mm brushless DC motor with an integrated speed controller, built for clean, compact machine layouts where consistent speed and low maintenance really matter. From my experience, this SI variant suits conveyors, small AGVs, labeling systems, and lab automation where you want analog or PWM speed control without a separate drive.

Our Order Placement Process and Guarantees

• Warranty: 365 days
• Lead time: 1 week if in stock; no more than one month at the latest
• Payment: 50% advance payment, full payment before delivery
• Express options: FedEx, UPS, DHL

Key Features

• Integrated speed controller (SI) – No external drive required; set speed via analog (0–10 V) or PWM in most cases.
• Compact 65 mm form factor – The x50 length typically keeps cabinet space and machine envelopes tight.
• 24–48 VDC supply – Common industrial voltages for easy system integration on mobile or stationary equipment.
• Stable speed regulation – Hall-sensor feedback and integrated electronics help hold setpoints under varying load.
• Simple I/O – Enable/disable, direction input, and a tacho/speed monitor output for easy diagnostics.
• Low maintenance – Brushless architecture reduces downtime versus brushed motors.
• Scalable options – Pairs well with Dunkermotoren planetary gearboxes and encoders when higher torque or speed feedback is needed.

Technical Specifications

Application Fields

You might notice that the BG65X50SI shows up in places where space is tight and speed consistency is non-negotiable. Typical use cases include:

• Packaging & labeling lines – web handling, film drives, label unwinds with analog speed trim from a PLC.
• Conveyors & feeders – light to medium-duty zones with on/off and speed ramps.
• AGVs/AMRs & mobile equipment – 24/48 VDC bus, compact wiring, and predictable speed control.
• Laboratory & medical devices – centrifuges, mixers, or pumps where brushless reliability reduces maintenance.
• Access control & kiosks – door operators, turnstiles, and ticketing modules with simple direction/enable logic.

Advantages & Value

• Fewer components – Integrated controller cuts panel space and wiring time, which typically trims build cost.
• Compatibility – Works with standard PLC analog outputs or PWM; no special drives to source.
• Reliability – BLDC platform with good thermal behavior and long life in continuous duty.
• Support & spare strategy – Common BG65 footprint across lengths and windings simplifies spares and future changes.

A packaging OEM told us the switch to BG65 SI variants shaved about 30 minutes off each machine wiring job and made troubleshooting easier thanks to the tacho output.

Installation & Maintenance

• Mounting – Use the front-face flange with proper alignment; avoid shaft side loads beyond bearing ratings. If using a gearbox, ensure coaxial alignment.
• Environment – Install in a clean, ventilated area; avoid conductive dust and dripping liquids. Keep ambient typically within -10…+60 °C.
• Wiring – Use shielded cables for setpoint/tacho lines, ground shields on the control side, and keep power and signal routing separated.
• Safety – Add an upstream DC fuse or breaker sized to the motor’s current; include Safe Torque Off or interlocks at the system level if required.
• Routine care – Periodically check connector tightness, clean cooling surfaces, and verify speed setpoint scaling. Firmware updates typically don’t apply to SI (analog) variants.

Common Accessories & Complementary Components

• Planetary gearboxes (PLG series) – For higher torque and lower output speed; sized to the BG65 flange.
• Encoders – Optical or magnetic encoders for applications needing precise feedback to a PLC or motion controller.
• Holding brakes – Spring-applied, power-released brakes for vertical loads or safety hold functions.
• Pre-terminated cable sets – Reduce wiring time and help maintain EMC performance.

Quality & Certifications

• Manufacturer production typically under ISO 9001 quality systems
• CE conformity and RoHS compliance are commonly met for BG series motors
• Our warranty coverage: 12 months from shipment

One thing I appreciate is how the BG65X50SI keeps projects practical—analog in, predictable speed out. If you’re balancing footprint, BOM simplicity, and stable performance, this unit tends to hit the sweet spot. If you need exact torque/speed at your voltage, share your target RPM and load; we’ll match the winding and any gearbox ratio accordingly.