Toyo Corporation Launches All-in-One Stepping Motor Torque Test Bench 'TSB STEP' Series Specialized in Accelerating and High-Torque Stepping Motor Development
Toyo Corporation launched three models of the 'TSB STEP' series, an all-in-one motor torque test bench specialized in stepping motor evaluation, on April 8, 2026. Featuring a proprietary 'low inertia load unit' and an electromagnetic braking system, it solves conventional problems and enables high-precision and high-speed motor performance evaluation. This supports the acceleration and high-torque demands of stepping motors used in 3D printers and robot arms, aiding product development.
📋 Article Processing Timeline
- 📰 Published: April 8, 2026 at 19:30
- 🔍 Collected: April 8, 2026 at 11:00
- 🤖 AI Analyzed: April 20, 2026 at 20:26 (297h 26m after Collected)
Toyo Corporation (Headquarters: Chuo-ku, Tokyo; Representative Director and President: Shunya Kono), herein referred to as Toyo Corporation, will begin sales of all three models, 'TSBS022/P', 'TSBS340/P', and 'TSBS070/H', of the 'TSB STEP' series, a new model in the 'TSB (Toyo Smart Bench) series' of all-in-one motor torque test benches for evaluating motor performance manufactured by Toyo Corporation, on Wednesday, April 8, 2026.
By adopting our independently developed 'low inertia load unit' and realizing an electromagnetic braking system with excellent handling, we support pull-in/pull-out tests from 100 mN·m (millinewton-meters) to several N·m, which were difficult with conventional string-and-weight methods, as well as high-speed pull-out tests at 10,000 rpm (revolutions per minute) or more, thereby advancing stepping motor evaluation technology and supporting product development in the motion control field.
## [Background/Overview]
Stepping motors are simple in structure and capable of highly precise positioning control, leading to their widespread adoption in a wide range of fields such as 3D printers, medical and analytical devices, and robot peripheral mechanisms like robot arms.
In recent years, against the backdrop of market expansion for products adopting stepping motors, stepping motors are increasingly required to improve performance, such as higher speed, higher torque density, and lower vibration. Furthermore, in comparison with servo motors, the importance of quantitatively grasping the limit performance of stepping motors in the output bandwidth from the design stage is increasing.
Conventionally, in 'pull-in/pull-out characteristics' evaluation, which is one of the performance evaluations of stepping motors, string-and-weight type devices that apply load using strings and weights have been widely used. However, users have pointed out challenges such as the skill level required for stringing affecting measurement accuracy, strings sometimes breaking during measurement in high-torque motors exceeding 100 mN·m, and difficulty in pull-out evaluation in high-speed rotation regions exceeding 10,000 rpm. For this reason, there have been cases where these conventional methods could not adequately cope with the increasing number of high-speed drive and high-torque stepping motors in recent years.
The 'TSB STEP' series, developed by Toyo Corporation, is a motor torque test bench specialized in stepping motor evaluation that solves the problems of the conventional string-and-weight method. One of its features is the adoption of an 'electromagnetic braking system', which enables automatic measurement of pull-in/pull-out characteristics. Generally, evaluation devices using electromagnetic braking systems tend to have large inertia, but the 'TSB STEP' series has newly developed and adopted a 'low inertia load unit' specialized for stepping motor evaluation. Compared to conventional electromagnetic braking systems, it suppresses the influence of inertia on torque, enabling more accurate evaluation. It eliminates measurement variability due to stringing work and string breakage problems, and achieves stable load control even in torque regions of 100 mN·m or more.
It also supports high-speed rotation regions, enabling evaluation at 10,000 rpm or more. Furthermore, it can integrally measure T-N (torque-speed) characteristics, efficiency, loss, and heat generation under actual load conditions. By linking with a pulse generator, drive conditions equivalent to actual equipment can be reproduced, allowing performance evaluation under conditions close to the actual operating environment.
Furthermore, when comparing and competing with servo motors, the 'TSB STEP' series quantitatively and
By adopting our independently developed 'low inertia load unit' and realizing an electromagnetic braking system with excellent handling, we support pull-in/pull-out tests from 100 mN·m (millinewton-meters) to several N·m, which were difficult with conventional string-and-weight methods, as well as high-speed pull-out tests at 10,000 rpm (revolutions per minute) or more, thereby advancing stepping motor evaluation technology and supporting product development in the motion control field.
## [Background/Overview]
Stepping motors are simple in structure and capable of highly precise positioning control, leading to their widespread adoption in a wide range of fields such as 3D printers, medical and analytical devices, and robot peripheral mechanisms like robot arms.
In recent years, against the backdrop of market expansion for products adopting stepping motors, stepping motors are increasingly required to improve performance, such as higher speed, higher torque density, and lower vibration. Furthermore, in comparison with servo motors, the importance of quantitatively grasping the limit performance of stepping motors in the output bandwidth from the design stage is increasing.
Conventionally, in 'pull-in/pull-out characteristics' evaluation, which is one of the performance evaluations of stepping motors, string-and-weight type devices that apply load using strings and weights have been widely used. However, users have pointed out challenges such as the skill level required for stringing affecting measurement accuracy, strings sometimes breaking during measurement in high-torque motors exceeding 100 mN·m, and difficulty in pull-out evaluation in high-speed rotation regions exceeding 10,000 rpm. For this reason, there have been cases where these conventional methods could not adequately cope with the increasing number of high-speed drive and high-torque stepping motors in recent years.
The 'TSB STEP' series, developed by Toyo Corporation, is a motor torque test bench specialized in stepping motor evaluation that solves the problems of the conventional string-and-weight method. One of its features is the adoption of an 'electromagnetic braking system', which enables automatic measurement of pull-in/pull-out characteristics. Generally, evaluation devices using electromagnetic braking systems tend to have large inertia, but the 'TSB STEP' series has newly developed and adopted a 'low inertia load unit' specialized for stepping motor evaluation. Compared to conventional electromagnetic braking systems, it suppresses the influence of inertia on torque, enabling more accurate evaluation. It eliminates measurement variability due to stringing work and string breakage problems, and achieves stable load control even in torque regions of 100 mN·m or more.
It also supports high-speed rotation regions, enabling evaluation at 10,000 rpm or more. Furthermore, it can integrally measure T-N (torque-speed) characteristics, efficiency, loss, and heat generation under actual load conditions. By linking with a pulse generator, drive conditions equivalent to actual equipment can be reproduced, allowing performance evaluation under conditions close to the actual operating environment.
Furthermore, when comparing and competing with servo motors, the 'TSB STEP' series quantitatively and