FM2 Frameless Motors
New electromagnetic design with lower temperature rise, higher torque, faster response. Provides robust and stable power in compact spaces, suitable for humanoid robots, collaborative robots, etc. Available in five standard sizes: 43/50/60/70/85mm, with support for customization to meet diverse needs.
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FM2-05008KTN556 Frameless Motor | 207W High Torque Density Motor for Robotic Joints | 48V
207W | 0.36N.m | 5500rpm
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High Torque Density: 0.36 Nm rated / 1.26 Nm peak torque (50 mm outer diameter platform)
- Ultra-Low Rotor Inertia enables fast response & precise control
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High speed: 5500 rpm rated, 6500 rpm maximum
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Improved thermal efficiency: 20% lower power loss
- Lightweight at only 92 g, ideal for compact robotic designs
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Frameless structure for flexible actuator integration
FM2-05014KTN346 Frameless Motor | 211W High Torque Density Motor for Robotic Joints | 48V
211W | 0.6N.m | 3360rpm
- High Torque Density: 0.60 Nm rated / 2.50 Nm peak torque (50 mm outer diameter platform)
- Ultra-Low Rotor Inertia enables fast response & precise control
- High speed: 3360 rpm rated, 3970 rpm maximum
- Improved thermal efficiency: 20% lower power loss
- Lightweight at only 136 g, ideal for compact robotic designs
- Frameless structure for flexible actuator integration
FM2-06008KTN506 Frameless Motor | 251W High Torque Density Motor for Robotic Joints | 48V
251W | 0.48N.m | 5000rpm
- High Torque Density: 0.48 Nm rated / 1.43 Nm peak torque (60 mm outer diameter platform)
- Ultra-Low Rotor Inertia enables fast response & precise control
- High speed: 5000 rpm rated, 6500 rpm maximum
- Improved thermal efficiency: 20% lower power loss
- Lightweight at only 135 g, ideal for compact robotic designs
- Frameless structure for flexible actuator integration
FM2-06011KTN386 Frameless Motor | 259W High Torque Density Motor for Robotic Joints | 48V
259W | 0.65N.m | 3800rpm
- High Torque Density: 0.65 Nm rated / 1.95 Nm peak torque (60 mm outer diameter platform)
- Ultra-Low Rotor Inertia enables fast response & precise control
- High speed: 3800 rpm rated, 5000 rpm maximum
- Improved thermal efficiency: 20% lower power loss
- Lightweight at only 175 g, ideal for compact robotic designs
- Frameless structure for flexible actuator integration
FM2-07010KTN256 Frameless Motor | 183W High Torque Density Motor for Robotic Joints | 48V
183W | 0.7N.m | 2500rpm
- High Torque Density: 0.70 Nm rated / 3.00 Nm peak torque (70 mm outer diameter platform)
- Ultra-Low Rotor Inertia enables fast response & precise control
- High speed: 2500 rpm rated, 3110 rpm maximum
- Improved thermal efficiency: 20% lower power loss
- Lightweight at only 211 g, ideal for compact robotic designs
- Frameless structure for flexible actuator integration
FM2-07018KTN306 Frameless Motor | 400W High Torque Density Motor for Robotic Joints | 48V
400W | 1.4N.m | 3000rpm
High Torque Density: 1.40 Nm rated / 4.90 Nm peak torque (70 mm outer diameter platform)
Ultra-Low Rotor Inertia enables fast response & precise control
High speed: 3000 rpm rated, 4000 rpm maximum
Improved thermal efficiency: 20% lower power loss
Lightweight at only 330 g, ideal for compact robotic designs
Frameless structure for flexible actuator integration
FM2-08513KTN256 Frameless Motor | 471W High Torque Density Motor for Robotic Joints | 48V
471W | 1.8N.m | 2500rpm
- High Torque Density: 1.80 Nm rated / 7.00 Nm peak torque (85 mm outer diameter platform)
- Ultra-Low Rotor Inertia enables fast response & precise control
- High speed: 2500 rpm rated, 3000 rpm maximum
- Improved thermal efficiency: 20% lower power loss
- Lightweight at only 330 g, ideal for compact robotic designs
- Frameless structure for flexible actuator integration
FM2-08523KTN256 Frameless Motor | 1063W High Torque Density Motor for Robotic Joints | 48V
1063W | 2.9N.m | 2500rpm
- High Torque Density: 2.90 Nm rated / 10.80 Nm peak torque (85 mm outer diameter platform)
- Ultra-Low Rotor Inertia enables fast response & precise control
- High speed: 2500 rpm rated, 3550 rpm maximum
- Improved thermal efficiency: 20% lower power loss
- Lightweight at only 500 g, ideal for compact robotic designs
- Frameless structure for flexible actuator integration
FM2-04308KTN376 Frameless Motor | 77W High Torque Density Motor for Robotic Joints | 48V
77W | 0.2N.m | 3700rpm
- High Torque Density: 0.20 Nm rated / 0.82 Nm peak torque (43 mm outer diameter platform)
- Ultra-Low Rotor Inertia enables fast response & precise control
- High speed: 3700 rpm rated, 5500 rpm maximum
- Improved thermal efficiency: 20% lower power loss
- Lightweight at only 54 g, ideal for compact robotic designs
- Frameless structure for flexible actuator integration
FM2-07013KTN266 Frameless Motor | 272W High Torque Density Motor for Robotic Joints | 48V
272W | 1.0N.m | 2600rpm
- High Torque Density: 1.0 Nm rated / 3.5 Nm peak torque (70 mm outer diameter platform)
- Ultra-Low Rotor Inertia enables fast response & precise control
- High speed: 2600 rpm rated, 4600 rpm maximum
- Improved thermal efficiency: 20% lower power loss
- Lightweight at only 264 g, ideal for compact robotic designs
- Frameless structure for flexible actuator integration
Specifications Preview
Model
Rated Voltage
(VDC)
Rated Current
(A)
Rated Torque
(Nm)
Maximum Torque
(Nm)
Rated Speed
(rpm)
Weight
(KG)
Size
(mm)
Low Temperature Rise, High Power Density
Leadshine FM2‑series frameless motors resolve key robotic‑joint challenges: heat buildup, inadequate burst torque and poor batch consistenc...
Low Temperature Rise, High Power Density
Leadshine FM2‑series frameless motors resolve key robotic‑joint challenges: heat buildup, inadequate burst torque and poor batch consistency. Enabled by optimized magnetic‑circuit design and vacuum potting, they feature ultra‑low temperature rise, ultra‑high torque density and extended endurance, achieving 10% torque gain, 20% lower losses and 30% longer runtime. Fully‑automated production ensures high consistency.
Frameless Motors
1. Can the motor be directly integrated into the customer’s existing mechanical structure? Are the mounting dimensions standardized?
Yes. Stator and rotor assemblies are available. Standard mounting dimension drawings and custom non-standard designs are supported. Machining accuracy of the mounting surface and concentricity must be ensured.
2. How is the motor fixed? Are there recommended stator/rotor fit tolerances? How is concentricity ensured?
The stator can be fixed by thermal shrink fitting (recommended interference ≥ 0.02 mm) or adhesive bonding (clearance ≥ 0.02 mm, with a glue groove recommended). The rotor is fixed with adhesive, with a clearance of approximately 0.02 mm; a glue groove is recommended on the shaft.
3. How is the motor driven? What controller should be used?
A servo drive is required. We offer an in-house integrated ring drive or an external Mini drive, and can also recommend compatible models.
4. Can an integrated version with an encoder be provided?
Yes. Incremental, absolute, and magnetic encoders are supported, enabling closed-loop control and high-precision positioning.
5. What type of drive is required? Are there recommended brands or models?
A drive that supports brushless servo control is recommended. Compatible drives are also available from us.
6. Is the motor compatible with the customer’s existing servo system or controller?
Yes, in most cases. Compatibility depends on interface types (encoder type, voltage and current levels), which need to be confirmed.
7. Is the motor start/stop smooth? Is there guidance for zero-position calibration?
Smoothness is determined by the drive control logic. We can provide tuning recommendations and a zero-position calibration manual.
8. Does the motor support closed-loop control? Can force/torque control or position control be achieved?
Yes. With an encoder and a closed-loop drive, high-precision position, speed, and torque control are achievable. Some solutions support impedance/force control modes.
Can frameless motors be used in high-temperature, humid, or dusty environments?
The motor has an open structure. Additional protection (e.g., dust covers or sealed cavities) is recommended when integrating into the end application. We can provide protection recommendations.
10. What is the service life of the product? Are there any application examples?
Normal service life exceeds 20,000 hours, suitable for 7×24 continuous operation. Widely used in medical devices, robotics, and other fields.
11. Are there relevant life test data or successful application cases?
Yes, there are successful cases across multiple industries, with validation through temperature rise, shock, aging, and other tests.
12. Can non-standard customization be done based on the customer’s structural or parameter requirements?
Yes. Non-standard customization is supported for rotor outer diameter, stator thickness, voltage/current, etc. Minimum order quantities are flexible, and prototype delivery typically takes 4–6 weeks.
Stock Code: 002979
Address: 15-20/F Block B, Nanshan l Valley, No.3157,Nanshan District, Shenzhen City Guangdong Province China
Tel: +86 0755 86088550
Fax: +86 0755 26402718
Website: https://www.leadshine.com
Email: store@leadshine.com
