Product Short Description
Manufacturer: Dunkermotoren GmbH (Ingersoll Rand)
Product Overview:
The BG65X50SI is a compact brushless DC motor with integrated encoder, designed for precision motion control applications. The “SI” suffix indicates an incremental encoder variant. The BG series features a flat, pancake-style design for space-constrained installations.
Description
Technical Specifications:
| Parameter | Value |
|---|---|
| Motor Type | Brushless DC (BLDC), 3-phase |
| Frame Size | 65 mm diameter |
| Motor Length | 50 mm |
| Rated Voltage | 24 VDC (nominal) |
| Rated Speed | 3,000–6,000 RPM (depending on winding) |
| Rated Torque (Continuous) | 0.15 Nm (typical) |
| Peak Torque | 0.45 Nm |
| Rated Power | Approximately 45 W |
| Encoder Type | Incremental optical encoder (SI variant) |
| Encoder Resolution | 500 pulses per revolution (PPR) (typical, verify variant) |
| Encoder Channels | A, B, Z (quadrature + index) |
| Efficiency | >85% at rated point |
| Operating Temperature | -20°C to +70°C |
| Protection Class | IP40 (standard), IP54 available |
| Shaft Type | Smooth shaft with keyway (DIN 6885-1) |
| Shaft Diameter | 8 mm |
| Weight | Approximately 0.45 kg |
| Bearings | Ball bearings (lifetime lubricated) |
| Insulation Class | F (155°C) |
Functional Features:
- Integrated Hall sensors for commutation
- Optical incremental encoder for position feedback
- Low cogging torque for smooth motion
- High power density — compact form factor
- Long service life — no brushes to replace
- Compatible with Dunkermotoren Grand Drive controllers
Working Principle:
The stator contains three-phase windings energized sequentially by an electronic controller based on Hall sensor feedback. The permanent magnet rotor follows the rotating magnetic field. The optical encoder provides position feedback for closed-loop speed/position control.
Advantages:
- Maintenance-free operation (no brushes)
- High efficiency reduces heat generation
- Compact pancake design fits in tight spaces
- Excellent speed-torque characteristics
Applicable Industries:
Medical devices, laboratory automation, robotics, packaging machinery, semiconductor equipment, textile machinery
Installation Requirements:
- Mount using M3 mounting holes on the motor flange
- Ensure shaft alignment within 0.05 mm TIR
- Connect encoder cable using shielded twisted pair
- Use 24VDC regulated power supply (ripple <5%)
Usage Notes:
- Do not exceed rated voltage — overvoltage damages Hall sensors
- Use controllers from Dunkermotoren for optimal performance
- Encoder cable must not be routed near high-current cables
- Store in dry environment — motor is not hermetically sealed
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