Description
The PM3505 is a compact 40mm pancake brushless DC motor designed for gimbals, robotic joints, rotary platforms and precision motion-control applications.
Operating at a nominal voltage of 12V, the motor provides 0.08 N·m nominal torque at 450 RPM, with a maximum no-load speed of 1090 RPM. Its flat 40mm form factor makes it suitable for applications where axial installation space is limited.
Multiple magnetic encoder configurations are available, including AS5600, AS5048A and AS5047P. These encoder-equipped versions include a rear housing and provide rotor position feedback for closed-loop control systems.
The PM3505 also features a center-hole structure suitable for compact rotary mechanisms and applications requiring routing through the motor center.
It is well suited for camera gimbals, robotic joints, pan-tilt systems, optical platforms, inspection equipment and compact automation mechanisms.
Key Features
- Compact 40mm pancake BLDC motor
- 12V nominal voltage
- 0.08 N·m nominal torque
- 450 RPM nominal speed
- Up to 1090 RPM no-load speed
- 0.12 N·m stall torque
- Center-hole motor structure
- 11 pole pairs
- Y-connected winding
- Lightweight 42g motor
- AS5600 encoder configuration available
- AS5048A encoder configuration available
- AS5047P encoder configuration available
- Encoder-equipped versions include rear housing
- Suitable for gimbals, robotics and precision rotary mechanisms
Specifications
| Specification | Value |
|---|---|
| Model | PM3505 |
| Motor Type | Pancake Brushless DC Motor |
| Motor Diameter | 40 mm |
| Nominal Voltage | 12 V |
| Nominal Current | 0.6 A |
| Nominal Torque | 0.08 N·m |
| Nominal Speed | 450 RPM |
| Max No-Load Speed | 1090 RPM |
| Stall Torque | 0.12 N·m |
| Stall Current | 1.2 A |
| Winding Connection | Y |
| Phase-to-Phase Resistance | 6 Ω |
| Phase-to-Phase Inductance | 0.85 mH |
| Speed Constant | 91 RPM/V |
| Torque Constant | 0.10 N·m/A |
| Rotor Inertia | 56 g·cm² |
| Pole Pairs | 11 |
| Motor Weight | 42 g |
| Recommended Motor Load | 800 g |
| Working Temperature | -20°C to 80°C |
| Encoder Options | AS5600 / AS5048A / AS5047P |
| Center / Slip Ring Size | 8.5 mm |
Note: The supplied motor specification sheet identifies the motor platform as HT3505, while the actual product and supplier SKU are sold as PM3505. This listing uses PM3505 to match the purchasable product configuration.
Dimensions
| Specification | Dimension |
|---|---|
| Motor Outer Diameter | Ø40 mm |
| Body Length Without Encoder Housing | 16 mm |
| Body Length With Encoder Housing | 21 mm |
| Center Diameter | Ø8.5 mm |
| Front Mounting Holes | 8 × M2.5 |
| Front Reference Diameter | Ø12 mm |
| Front Reference Diameter | Ø15 mm |
| Rear Body Diameter Without Housing | Ø38 mm |
| Rear Center Hole | Ø4.5 mm |
Dimensions may vary slightly depending on the selected encoder configuration.
Encoder Configurations
| Configuration | Encoder | Housing |
|---|---|---|
| Motor Only | None | Without Rear Housing |
| AS5600 Version | AS5600 | Included |
| AS5048A Version | AS5048A | Included |
| AS5047P Version | AS5047P | Included |
Applications
- Camera gimbals
- Robotic joints
- Robot actuators
- Pan-tilt systems
- Optical platforms
- Rotary mechanisms
- Inspection equipment
- Compact automation systems
- Position-control mechanisms
- DIY robotics
Package Includes
Package contents depend on the selected configuration.
| Configuration | Package Contents |
|---|---|
| PM3505 Motor Only | 1 × PM3505 Motor |
| PM3505 Motor + AS5600 Encoder | 1 × PM3505 Motor + AS5600 Encoder + Rear Cover |
| PM3505 Motor + AS5048A Encoder | 1 × PM3505 Motor + AS5048A Encoder + Rear Cover |
| PM3505 Motor + AS5047P Encoder | 1 × PM3505 Motor + AS5047P Encoder + Rear Cover |
FAQ
What is the rated voltage of the PM3505?
The PM3505 has a nominal operating voltage of 12V DC.
What is the rated torque of the motor?
The nominal torque is 0.08 N·m, with a specified stall torque of 0.12 N·m.
What is the rated speed?
The nominal speed is 450 RPM, while the specified maximum no-load speed is 1090 RPM.
Which encoder options are available?
The motor is available with AS5600, AS5048A or AS5047P magnetic encoder configurations.
Does the motor-only version include an encoder?
No. The PM3505 Motor Only configuration does not include an encoder or rear encoder housing.
Do the encoder versions include the rear cover?
Yes. According to the available product configurations, the AS5600, AS5048A and AS5047P motor-and-encoder versions include the rear housing.
Is the PM3505 suitable for gimbals and robotic joints?
Yes. Its compact pancake construction, center-hole structure and optional position-feedback configurations make it suitable for gimbals, robotic joints and other compact rotary mechanisms when its torque and speed specifications meet the application requirements.
