Pranshu Frameless Torque Motors deliver high-torque direct-drive performance for robotics, automation, medical devices, aerospace, and precision motion control. Unlike conventional motors, their frameless design allows engineers to integrate the rotor and stator directly into the machine. As a result, they reduce system size, eliminate unnecessary components, and improve overall efficiency.
High Torque in a Compact Design
These motors offer high torque density in a compact package. In addition, they eliminate the need for gearboxes, belts, and couplings, removing backlash and improving positioning accuracy. Consequently, the direct-drive design delivers smoother motion, faster response, and lower maintenance. This makes the motors an excellent choice for demanding motion control applications.
Flexible Integration
The series is available in diameters from 65 mm to 410 mm and delivers rated torque up to 70 Nm. Furthermore, customers can customize the motor winding, rotor, and stator to meet specific speed, torque, and installation requirements. Therefore, engineers can optimize the motor for both new designs and existing systems.
Typical Applications
Frameless Direct Drive Torque Motors combine compact size, high efficiency, and reliable direct-drive performance. For this reason, they are ideal for robotic joints, rotary tables, semiconductor equipment, machine tools, defense systems, gimbals, medical equipment, and other high-performance OEM applications.
Key Features:
- Compact and low-profile design for space-limited systems
- High dynamic performance with precise, smooth motion
- Frameless configuration for direct integration into the machine
- Customizable rotor, stator, and winding for application-specific optimization
- Ideal for: gimbals, robot arms, index tables, and precision automation
Product Details
| Electrical Specifications | Unit | T-I-065-18- 07-N-AB | T-I-100-25- 12-N-AB | T-I-100-60- 40-N-AB | T-I-152-38- 93-N-AB | T-I-230-35- 130-N-AB | T-I-410-45- 235-N-AB | ||
|---|---|---|---|---|---|---|---|---|---|
| Continuous Torque | Nm | 0.25 | 1 | 4 | 8 | 16 | 70 | ||
| Continuous Current | A | 2.9 | 5 | 7 | 5.5 | 11 | 28 | ||
| Phases | 3 | 3 | 3 | 3 | 3 | 3 | |||
| Kt (Torque Constant) | Nm /Amp | 0.086 | 0.2 | 0.57 | 1.454 | 1.45 | 2.5 | ||
| Ke (Voltage Constant) | V/Krpm | 7 | 12 | 40 | 93 | 130 | 235 | ||
| Km (Motor Constant) | Nm/√𝑊 | 0.075 | 0.26 | 0.75 | 1.26 | 1.96 | 7.21 | ||
| Resistance | Ohm | 1.322 | 0.58 | 0.576 | 1.33 | 0.548 | 0.12 | ||
| Poles | 8 | 12 | 12 | 24 | 48 | 64 | |||
| Mechanical Specifications | |||||||||
| Stator OD | mm | 65 | 100 | 100 | 152 | 230 | 410 | ||
| Stator ID | mm | 35 | 65 | 65 | 108 | 184.5 | 332 | ||
| Rotor OD | mm | 33.3 | 63 | 63 | 106.5 | 183 | 330 | ||
| Rotor ID | mm | 17 | 38 | 38 | 89 | 155 | 290 | ||
| Air Gap | mm | 0.85 | 1 | 1 | 0.75 | 0.75 | 1 | ||
| Total Length | mm | 18 | 25 | 60 | 38 | 35 | 45 | ||
| Stator Core Length | mm | 10 | 10 | 40 | 26 | 22 | 25 | ||
| Weight | kg | 0.25 | 0.6 | 1.8 | 1.9 | 3 | 12 | ||