Product Description
25mm ultimate compact
As light as 10 grams
Zero cogging torque
The sine wave THD is less than 1%
Small volume with an outer diameter of 25-50mm
To better adapt to market demands and achieve the goals of miniaturization and lightweighting of brushless motors, through continuous optimization, the CTSM series of frameless brushless DC torque motors with a new design concept have been launched to the market. They feature small size, light body, high power density, high quality, and short production cycle. It provides an excellent solution for designing lightweight and miniaturized servo series for customers.
Functional Features
Multiple size options available (25 - 445mm)
Ultra-high power density, small size, light weight
Directly connected to the equipment to enhance system accuracy and stiffness
Optional stainless steel rotor with high corrosion resistance
Operating temperature range: -40℃ to +55℃
Natural cooling, no need for cooling equipment
Each frame has multiple selectable segment lengths.
Rotor optimized by sinusoidal magnetic field
Low distortion sinusoidal reverse electromotive force waveform, low torque fluctuation
NdFeB material, stable operation in high-temperature environment, high power density
Selectable motor commutation Hall elements
Motor insulation grade F (155℃), also available in H (180℃) and C (210℃) grades
Application
Collaborative robots, service robots, shipborne equipment, aerospace, wechat communication, Beidou navigation, intelligent agriculture, autonomous driving, optical platforms, textile machinery, radar systems, dynamic communication, precision servo systems, CNC machine tools, etc.
Dimensional drawing
CTSM Series Outline Diagram
Note: There may be a deviation of up to 10% in the motor parameters. Please contact our engineers when selecting the driver.
Model Description
For example：CTSM50-06A35 |
C--Centralized winding |
T--Torque |
S--Servo |
M--Motor |
50—Frame Size， OD 50mm |
06--Stator stack thickness mark 06 is 6mm |
A---Voltage Amplitude Identification |
A—48 B—24 C—60 D—100 E—270 F—80 G—300 H—12 |
K—144 L—72 M-220 N-540 P-36 R-110 |
3500r/min is the 1% mark of rotational speed |
Product parameters
CTSM25 series of high-efficiency brushless DC torque motors | ||||
Project Model | CTSM25-02H50 | CTSM25-02B110 | CTSM25-05B100 | CTSM25-05B60 |
Power P [W] | 3 | 6.2 | 17 | 8.5 |
Rated torque Tr * [Nm] | 0.0086 | 0.00684 | 0.018 | 0.02 |
Peak torque Tmax @ | 0.01 | 0.01 | 0.036 | 0.04 |
Maximum speed nmax ** [rpm] ±10% | 6000 | 10800 | 10000 | 6000 |
Diameter D [mm] | 25 | 25 | 25 | 25 |
Length L [mm] | 2 | 2 | 5 | 5 |
Diameter winding head DW [mm] | 24 | 24 | 24 | 24 |
A Winding Height A Lwa | 2 | 2 | 2 | 2 |
B Winding Height B Lwb[mm] | 3 | 3 | 3 | 3 |
Hollow shaft diameter rotor Dr H7 [mm] | 12 | 12 | 12 | 12 |
Rotor Height I [mm] | 5 | 5 | 8 | 8 |
Stator and rotor deviation Lsr[mm] | 1.5 | 1.5 | 1.5 | 1.5 |
Air gap diameter Dairφ | 18 | 18 | 18 | 18 |
Air gap diameter Dair | 0.35 | 0.35 | 0.35 | 0.35 |
Weight m [g] | 10 | 10 | 18 | 18 |
Rotor inertia J [g*cm2] | 3 | 3 | 5 | 5 |
Rated voltage Ur [V] | 15 | 27 | 27 | 27 |
Rated current Ir [A] ±10% | 0.35 | 0.3 | 0.9 | 0.5 |
Copper losses PL,r @Tr and 20°C [W] | 2.1 | 2.1 | 4.9 | 4.25 |
Torque constant kT @ 20°C [Nm/A] ±10% | 0.024 | 0.022 | 0.024 | 0.04 |
Back EMF at Temp [V/r/min-1] | 0.0034 | 0.0025 | 0.0027 | 0.0045 |
Motor constant kM @ 20°C [Nm/ √W] | 0.005 | 0.005 | 0.01 | 0.01 |
Terminal resistance RTT @ 20°C [Ω] ±10% | 16.9 | 16.9 | 6 | 17 |
Terminal inductance LTT * [ μH] ±30% | 800 | 800 | ||
Number of pole pairs | 8 | 8 | 8 | 8 |
Max. efficiency η [%] | 85% | 85% | 85% | 85% |
If you wish to change the working voltage or other motor parameters, please contact the engineering and technical personnel. The rated torque enables locked-rotor operation. | ||||
CTSM30 series of high-efficiency brushless DC torque motors | ||||||
Project Model | CTSM30-06A60 | CTSM30-06B60 | CTSM30-09A60 | CTSM30-09B60 | CTSM30- 12A45 | CTSM30- 12B45 |
Power P [W] | 13 | 13 | 25 | 25 | 25 | 25 |
Rated torque Tr * [Nm] | 0.024 | 0.024 | 0.05 | 0.05 | 0.07 | 0.07 |
Peak torque Tmax @ | 0.15 | 0.15 | 0.2 | 0.2 | 0.3 | 0.3 |
Maximum speed nmax ** [rpm] ±10% | 6000 | 6000 | 6000 | 6000 | 4500 | 4500 |
Diameter D [mm] | 30 | 30 | 30 | 30 | 30 | 30 |
Length L [mm] | 6 | 6 | 9 | 9 | 12 | 12 |
Diameter winding head DW [mm] | 28.5 | 28.5 | 28.5 | 28.5 | 28.5 | 28.5 |
A Winding Height A Lwa | 3 | 3.5 | 3 | 3.5 | 3 | 3.5 |
B Winding Height B Lwb[mm] | 4 | 4.5 | 4 | 4.5 | 4 | 4.5 |
Hollow shaft diameter rotor Dr H7 [mm] | 12 | 12 | 12 | 12 | 12 | 12 |
Rotor Height I [mm] | 9 | 9 | 12 | 12 | 15 | 15 |
Stator and rotor deviation Lsr[mm] | 1 | 1 | 1 | 1 | 1 | 1 |
Air gap diameter Dairφ | 19.2 | 19.2 | 19.2 | 19.2 | 19.2 | 19.2 |
Air gap diameter Dair | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
Weight m [g] | 27 | 27 | 37 | 37 | 48 | 48 |
Rotor inertia J [g*cm2] | 6.8 | 6.8 | 8.8 | 8.8 | 11 | 11 |
Rated voltage Ur [V] | 48 | 24 | 48 | 24 | 48 | 24 |
Rated current Ir [A] ±10% | 0.32 | 0.64 | 0.66 | 1.32 | 0.7 | 1.4 |
Copper losses PL,r @Tr and 20°C [W] | 2.3 | 2.2 | 3.5 | 3.5 | 5.75 | 5.7 |
Torque constant kT @ 20°C [Nm/A] ±10% | 0.075 | 0.0375 | 0.075 | 0.0375 | 0.1 | 0.05 |
Back EMF at Temp [V/r/min-1] | 0.008 | 0.004 | 0.008 | 0.004 | 0.0106 | 0.0053 |
Motor constant kM @ 20°C [Nm/ √W] | 0.016 | 0.016 | 0.0266 | 0.0266 | 0.029 | 0.029 |
Terminal resistance RTT @ 20°C [Ω] ±10% | 22 | 5.36 | 8.1 | 2 | 11.7 | 2.9 |
Terminal inductance LTT * [ μH] ±30% | 1800 | 460 | 1000 | 300 | 1400 | 360 |
Number of pole pairs | 8 | 8 | 8 | 8 | 8 | 8 |
Max. efficiency η [%] | 85% | 85% | 85% | 85% | 85% | 85% |
If you wish to change the working voltage or other motor parameters, please contact the engineering and technical personnel. The rated torque enables locked-rotor operation. | ||||||
CTSM33 series of high-efficiency brushless DC torque motors | ||||||
Project Model | CTSM33-04A53 | CTSM33-04A70 | CTSM33-04B150 | CTSM33-08A50 | CTSM33-20B20 | CTAM33-20A40 |
Power P [W] | 18 | 22 | 50 | 33 | 24 | 60 |
Rated torque Tr * [Nm] | 0.045 | 0.034 | 0.034 | 0.075 | 0.16 | 0.16 |
Peak torque Tmax @ | 0.1 | 0.1 | 0.1 | 0.2 | 0.45 | 0.45 |
Maximum speed nmax ** [rpm] ±10% | 5300 | 7000 | 15000 | 5000 | 2000 | 4000 |
Diameter D [mm] | 33 | 33 | 33 | 33 | 33 | 33 |
Length L [mm] | 4 | 4 | 4 | 8 | 20 | 20 |
Diameter winding head DW [mm] | 31.5 | 31.5 | 31.5 | 31.5 | 31.5 | 31.5 |
A Winding Height A Lwa | 2 | 2 | 2 | 2.5 | 3 | 3 |
B Winding Height B Lwb[mm] | 3 | 3 | 3 | 3.5 | 4 | 4 |
Hollow shaft diameter rotor Dr H7 [mm] | 16 | 16 | 16 | 16 | 16 | 16 |
Rotor Height I [mm] | 6 | 6 | 6 | 12 | 24 | 30 |
Stator and rotor deviation Lsr[mm] | 1 | 1 | 1 | 2 | 5 | 5 |
Air gap diameter Dairφ | 23 | 23 | 23 | 23 | 23 | 23 |
Air gap diameter Dair | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
Weight m [g] | 22 | 22.5 | 24 | 38 | 62 | 62 |
Rotor inertia J [g*cm2] | 8.3 | 8.3 | 8.3 | 16.6 | 41.5 | 41.5 |
Rated voltage Ur [V] | 48 | 48 | 24 | 48 | 24 | 48 |
Rated current Ir [A] ±10% | 0.55 | 0.55 | 2.55 | 0.85 | 1.6 | 1.6 |
Copper losses PL,r @Tr and 20°C [W] | 7.5 | 3.44 | 3.5 | 6.3 | 9.6 | 9.6 |
Torque constant kT @ 20°C [Nm/A] ±10% | 0.082 | 0.062 | 0.013 | 0.088 | 0.1 | 0.1 |
Back EMF at Temp [V/r/min-1] | 0.0089 | 0.00685 | 0.0016 | 0.0096 | 0.012 | 0.012 |
Motor constant kM @ 20°C [Nm/ √W] | 0.0165 | 0.0176 | 0.02 | 0.03 | 0.051 | 0.051 |
Terminal resistance RTT @ 20°C [Ω] ±10% | 24.7 | 11.4 | 0.5 | 8.8 | 4 | 4 |
Terminal inductance LTT * [ μH] ±30% | 1050 | 800 | 60 | 700 | 350 | 350 |
Number of pole pairs | 8 | 8 | 8 | 8 | 8 | 8 |
Max. efficiency η [%] | 85% | 85% | 85% | 85% | 85% | 85% |
If you wish to change the working voltage or other motor parameters, please contact the engineering and technical personnel. The rated torque enables locked-rotor operation. | ||||||
CTSM50 series of high-efficiency brushless DC torque motors | ||||||
Project Model | CTSM50-06A50 | CTSM50-06B50 | CTSM50-10A45 | CTSM50-10B45 | CTSM50-14A40 | CTSM50-14B40 |
Power P [W] | 60 | 60 | 95 | 95 | 150 | 150 |
Rated torque Tr * [Nm] | 0.13 | 0.13 | 0.22 | 0.22 | 0.4 | 0.4 |
Peak torque Tmax @ | 0.5 | 0.5 | 0.75 | 0.75 | 1 | 1 |
Maximum speed nmax ** [rpm] ±10% | 5000 | 5000 | 4500 | 4500 | 4000 | 4000 |
Diameter D [mm] | 50 | 50 | 50 | 50 | 50 | 50 |
Length L [mm] | 6 | 6 | 10 | 10 | 14 | 14 |
Diameter winding head DW [mm] | 48 | 48 | 48 | 48 | 48 | 48 |
A Winding Height A Lwa | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 |
B Winding Height B Lwb[mm] | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 |
Hollow shaft diameter rotor Dr H7 [mm] | 29 | 29 | 29 | 29 | 29 | 29 |
Rotor Height I [mm] | 8 | 8 | 13 | 13 | 18 | 18 |
Stator and rotor deviation Lsr[mm] | 1 | 1 | 1.5 | 1.5 | 2 | 2 |
Air gap diameter Dairφ | 36 | 36 | 36 | 36 | 36 | 36 |
Air gap diameter Dair | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
Weight m [g] | 64 | 64 | 100 | 100 | 135 | 135 |
Rotor inertia J [g*cm2] | 50 | 50 | 81 | 81 | 113 | 113 |
Rated voltage Ur [V] | 48 | 24 | 48 | 24 | 48 | 24 |
Rated current Ir [A] ±10% | 1.6 | 3.2 | 2.4 | 4.8 | 3.7 | 7.4 |
Copper losses PL,r @Tr and 20°C [W] | 8.32 | 7.8 | 10.4 | 9.7 | 17.8 | 17.5 |
Torque constant kT @ 20°C [Nm/A] ±10% | 0.08 | 0.04 | 0.0916 | 0.0458 | 0.108 | 0.054 |
Back EMF at Temp [V/r/min-1] | 0.0096 | 0.0048 | 0.0106 | 0.0053 | 0.012 | 0.006 |
Motor constant kM @ 20°C [Nm/ √W] | 0.0443 | 0.0458 | 0.0683 | 0.07 | 0.095 | 0.095 |
Terminal resistance RTT @ 20°C [Ω] ±10% | 3.25 | 0.76 | 1.8 | 0.42 | 1.3 | 0.32 |
Terminal inductance LTT * [ μH] ±30% | 700 | 185 | 440 | 115 | 400 | 90 |
Number of pole pairs | 8 | 8 | 8 | 8 | 8 | 8 |
Max. efficiency η [%] | 85% | 85% | 85% | 85% | 85% | 85% |
If you wish to change the working voltage or other motor parameters, please contact the engineering and technical personnel. The rated torque enables locked-rotor operation. | ||||||
Custom Process
Demand communication
Scheme design
Sample production
Mass production
After-sales service
Technical Support
Service
Dedicated service, along the way
Warranty worry-free, extended repair, often return to promote optimization, peace of mind choice, all in control.
Online customer service Efficient logistics Deliver on time Quality Assurance Technical maintenance Manufacturer support
After-sale guarantee
After-sales service: We provide comprehensive after-sales technical support, if you encounter any problems in the process of use, the professional after-sales engineer team will respond quickly, through telephone, mail or remote assistance, to provide you with detailed solutions. We also provide regular return visits to our products to understand how they are used and to collect your feedback in order to continuously optimize our products and services. In addition, in strict accordance with the quality assurance policy, we provide free repair or replacement services for products with quality problems during the warranty period, so that you have no worries.
