Frameless Direct Drive Torque Motors

The compact, fully-integrated torque motors from Pranshu deliver enhanced dynamic performance and precise motion control for demanding applications. Commonly used in gimbals, robotic arms, index tables, and other high-precision systems, these motors feature large through-holes and a low-profile design that enable flexible integration and optimal performance.

Frameless torque motors consist of a separate rotor and stator, which are assembled directly into the machine for maximum mechanical efficiency. Both components can be customized — the motor winding, in particular, can be tailored to match the required speed and torque characteristics of your application.

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