4) Other Products
| Stepper Motor Series |
| Motor series | Phase No. | Step angle | Motor size | Motor length | Holding torque |
| Nema 8 | 2 phase | 1.8 degree | 20x20mm | 30~42mm | 180~300g.cm |
| Nema 11 | 2 phase | 1.8 degree | 28x28mm | 32~51mm | 430~1200g.cm |
| Nema 14 | 2 phase | 1.8 degree | 35x35mm | 27~42mm | 1000~2000g.cm |
| Nema 16 | 2 phase | 1.8 degree | 39x39mm | 20~44mm | 650~2800g.cm |
| Nema 17 | 2 phase | 1.8 degree | 42x42mm | 25~60mm | 1.5~7.3kg.cm |
| Nema 23 | 2 phase | 1.8 degree | 57x57mm | 41~112mm | 0.39~3.1N.m |
| Nema 24 | 2 phase | 1.8 degree | 60x60mm | 56~111mm | 1.17~4.5N.m |
| Nema 34 | 2 phase | 1.8 degree | 86x86mm | 67~155mm | 3.4~12.2N.m |
| Nema 42 | 2 phase | 1.8 degree | 110x110mm | 99~201mm | 11.2~28N.m |
| Nema 52 | 2 phase | 1.8 degree | 130x130mm | 173~285mm | 13.3~22.5N.m |
We supply Stepper motor, Brushless DC motor, DC Brushed motor, Driver, Spindle motor,
AC servo motor, Coreless motor, Gearbox reducer, Power supply, ball screw, linear guide, and parts.
5) Product information and advantages
Because of the wide application of stepper motors, more and more research has been done on the control of stepper motors. If the stepping pulse changes too fast during startup or acceleration, the rotor cannot follow the change of the power on signal due to inertia, resulting in locked rotor or out of step. When stopping or decelerating, the same reason may lead to over step. In order to prevent locked rotor, out of step and over step, and improve the working frequency, the stepping motor shall be controlled to increase and decrease speed.
The speed of the stepping motor depends on the pulse frequency, the number of rotor teeth and the number of beats. Its angular velocity is proportional to the pulse frequency and synchronized with the pulse in time. Therefore, when the number of rotor teeth and the number of running beats are constant, the required speed can be obtained as long as the pulse frequency is controlled. Since the stepping motor is started by its synchronous torque, the starting frequency is not high in order to avoid out of step. In particular, with the increase of power, the rotor diameter increases, the inertia increases, and the starting frequency and the maximum operating frequency may differ by as much as ten times.
The starting frequency characteristic of the stepping motor makes it impossible to directly reach the operating frequency when the stepping motor is started. Instead, there must be a starting process, that is, from a low speed to the operating speed. The operating frequency cannot be immediately reduced to zero when stopping, but there must be a high-speed gradual reduction to zero.
