8mm Coreless DC Motor With Planetary Gearbox Linear Actuator TSL-PG8K256-KS0816+SG35
♦ Basic Info:
- Brand:TSL
- Origin:China
- Motor Model:TSL-PG8K256-KS0816+SG35
- Total Stroke: 50 mm
- Lead Screw Nut Output Thrust: 30 N
- No-load Output Speed: 3 ± 10% mm/s
- #More Specifications
- #Outline Drawing
- Download Datasheet
♦ Typical Applications:
- Precision Optical Lens Positioning
- Surgical Robotic Instruments
- Humanoid Robotic Dexterous Hands
- Miniature Laboratory Automation
Micro Linear Actuator Specifications
This high-performance Micro Linear Actuator combines a precision 8mm planetary gearbox with a high-speed coreless DC motor. Equipped with a 304 stainless steel lead screw, it is engineered for applications requiring ultra-slim profiles and reliable linear motion, such as surgical robotic instruments and humanoid dexterous hands.
T-type Lead Screw Gear Motor Parameters
The integration of a high-precision T-type Lead Screw makes this series ideal for applications requiring strict reciprocating motion. By combining a 304 stainless steel screw with a premium brass nut, the micro linear actuator delivers a stable 30N output thrust while offering excellent self-lubrication and corrosion resistance for long-term reliability in precision devices.
With a 2.4mm lead and a 2-start thread design, this micro linear actuator ensures extremely smooth and accurate linear displacement. Its compact mechanical structure makes it a perfect fit for surgical robots, laboratory automation, and micro-grippers, enabling complex motion control within highly confined spaces.
| Item | Specification |
| Lead Screw Material | 304 Stainless Steel |
| Nut Material | Brass |
| Diameter | 3.5 mm |
| Number of Thread Starts | 2 Starts |
| Pitch | 1.2 mm |
| Lead | 2.4 mm |
| Hand of Thread | Right-hand |
| Total Stroke | 50 mm |
| Lead Screw Nut Output Thrust | 30 N |
| No-load Output Speed | 3 ± 10% mm/s |
| Rated Output Speed | 2.5 ± 10% mm/s |
Motor Performance Parameters
At the heart of this micro linear actuator is a high-performance 8mm coreless brushed DC motor. Unlike traditional iron-core motors, the coreless design eliminates cogging torque, resulting in extremely low inertia and rapid response times. This allows the motor to be exceptionally sensitive during starts and stops, which is critical for precision instruments requiring high-frequency dynamic response.
The motor achieves a maximum efficiency of 60% at a 7.4V rated voltage, significantly reducing heat generation during extended operation. Furthermore, thanks to its balanced internal construction, the operating noise is kept below 40dB, and it functions reliably in extreme temperatures ranging from -40°C to 125°C, meeting the rigorous demands of aerospace and specialized industrial sectors.
| Item | Specification |
| Motor Type | Coreless Brushed DC |
| Operating Voltage | 7.4 V |
| No-load Speed | 20,000 ± 10% RPM |
| No-load Current | ≤ 0.08 A |
| Load Speed | 15,000 ± 10% RPM |
| Load Torque | ≥ 5 g·cm |
| Load Current | ≤ 0.15 A |
| Pole Pairs | 1 Pair of Poles |
| Operating Temperature | -40 ~ 125 ℃ |
| Noise Level | ≤ 40 dB |
| Maximum Motor Efficiency | 60% |
Planetary Gear Motor Performance Parameters
To match the high speed of the coreless motor, we have paired it with a proprietary 8mm planetary gearbox. Unlike common plastic gears, all internal gears in this gearbox are manufactured using Solid Steel Machined processes. This robust metallic transmission chain ensures the system can withstand a load torque of 500 g-cm with high impact resistance.
Through a high 1:256 gear ratio, the gearbox successfully converts high-speed motor rotation into powerful linear force while maintaining the micro linear actuator’s ultra-slim diameter. The precision-matched gear sets not only ensure linear power output but also suppress total noise to under 55dB through optimized lubrication, providing high-torque magnification in a miniature package.
| Item | Specification |
| Gear Ratio | 1:256 |
| Gearbox Material | Solid Steel (Machined) |
| Operating Voltage | 7.4 V |
| No-load Speed | 80 ± 10% RPM |
| No-load Current | ≤ 0.1 A |
| Load Speed | 60 ± 10% RPM |
| Load Torque | ≥ 500 g·cm |
| Load Current | ≤ 0.2 A |
| Operating Temperature | -40 ~ 125 ℃ |
| Noise Level | ≤ 55 dB |
8mm Micro Linear Actuator Mechanical Drawing
Unless otherwise stated, all dimensions are in millimeters.
Application Case: Precision Optical Lens Positioning
In high-resolution imaging systems, the demand for precise Auto-focus (AF) and Zoom control is critical. Traditional motors often struggle with bulkiness or unwanted vibrations that can degrade image quality.
Our 8mm Micro Linear Actuator was specifically selected by clients in the optical industry to overcome these challenges:
Sub-micron Precision: By leveraging the low-inertia response of the coreless motor and the 1:256 high-reduction planetary gearbox, this actuator provides ultra-fine displacement control for lens groups.
Ultra-Quiet Operation: With a motor noise level below 40dB, it ensures zero audio interference during video recording or high-precision laboratory observations.
High Thrust in a Compact Form: Delivering 30N of thrust within a slim 8mm diameter, it easily drives heavy, multi-element lens assemblies without increasing the device’s overall footprint.
Environmental Reliability: Featuring a 304 stainless steel lead screw and a wide operating temperature range (-40°C to 125°C), it guarantees stable lens performance in both outdoor surveillance and extreme industrial environments.
Development Samples & Manufacturing
Development Samples: If you require samples for R&D or prototyping, please contact our team for immediate assistance.
Engineering & Manufacturing: Contact our Sales Engineers for a production quotation or a consultation on product integration and customization. We provide tailored motion solutions designed around your specific engineering needs.
Payment & Shipping:
Payment: PayPal, T/T.
Shipping: DHL/FedEx (3-5 days). Items are typically shipped within 1-3 business days after payment confirmation.
FAQ for Micro Linear Actuator
Q1: Can the stroke length be customized for my project?
A: Yes. While the standard total stroke is 50mm, we can customize the 304 stainless steel lead screw length to meet your specific integration requirements.
Q2: Why use a coreless motor instead of a standard DC motor?
A: Coreless motors offer much faster acceleration and higher efficiency (up to 60%) because they have no iron core in the rotor, which also eliminates “cogging” for smoother linear motion.
Q3: Is this actuator suitable for high-temperature environments?
A: Absolutely. This model is designed to operate reliably in ambient temperatures between -40°C and 125°C.
Motor Customization Guide
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