Changzhou Prostepper Co.,Ltd.
Committed to becoming the most reliable motor supplier in China
Add to Cart
Bipolar motors
Bipolar motors have a single winding per phase. The current in a winding needs to be reversed in order to reverse a magnetic pole, so the driving circuit must be more complicated, typically with an H-bridge arrangement (however there are several off-the-shelf driver chips available to make this a simple affair). There are two leads per phase, none is common.
A typical driving pattern for a two coil bipolar stepper motor would be: A+ B+ A− B−. I.e. drive coil A with positive current, then remove current from coil A; then drive coil B with positive current, then remove current from coil B; then drive coil A with negative current (flipping polarity by switching the wires e.g. with an H bridge), then remove current from coil A; then drive coil B with negative current (again flipping polarity same as coil A); the cycle is complete and begins anew.
Static friction effects using an H-bridge have been observed with certain drive topologies.
Dithering the stepper signal at a higher frequency than the motor can respond to will reduce this "static friction" effect.
Product description
Automatic assembly line
Automatic assembly line, improve production efficiency, low cost without human operation, one line down intelligent mechanical automatic assembly
Strictly control the production of parts to improve the quality of parts
Automatic machine operation, stable automatic work, high processing efficiency.
Longer Life
Stepping motor is a mechanical structure,which does not need be changed by electric brush or Hall sensor,thus reducing the probability and increasing the motor life.Stepping motor life usually determined by the life of the bearing.
Specifications
| Model | PST60H268-4L40M | PST60H286-4L50M |
| Holding Torque | 2.2N.m | 3.2N.m |
| Related Current | 4A/Phase | 5A/Phase |
| Resistance | 0.5Ω/Phase | 0.4Ω/Phase |
| Inductance | 1.2MH/Phase | 2MH/Phase |
| Inertia | 340g.cm² | 690g.cm² |
| Black Torque | 1.3N.m | 1.3N.m |
Radial Load&Axial Load
| Motor Size | Shaft Diameter (mm) | Radial Load (N) | Axial Load (N) | ||||||
| Distance from Mounting Surface (mm) | |||||||||
| 5 | 10 | 15 | 20 | 25 | 30 | 35 | |||
| NEMA8 | 4 | 15 | 12 | — | 3 | ||||
| NEMA 11 | 5 | 50 | 35 | 25 | — | 5 | |||
| NEMA 14 | 5 | 50 | 35 | 25 | 20 | — | — | — | 10 |
| NEMA 17 | 5 | 50 | 35 | 25 | 20 | — | — | 15 | |
| NEMA 23 | 8 | 270 | 180 | 130 | 100 | 90 | — | 20 | |
| NEMA 24 | 8 | 200 | 135 | 100 | 82 | 58 | — | — | 30 |
| NEMA 34 | 14 | 620 | 550 | 480 | 390 | 340 | 290 | 260 | 60 |
Applications of Stepper Motors
s
Computer controlled stepper motors are a type of motion-control positioning system. They are typically digitally controlled as part of an open loop system for use in holding or positioning applications.
In the field of lasers and optics they are frequently used in precision positioning equipment such as linear actuators, linear stages, rotation stages, goniometers, and mirror mounts. Other uses are in packaging machinery, and positioning of valve pilot stages for fluid control systems.
Commercially, stepper motors are used in floppy disk drives, flatbed scanners, computer printers, plotters, slot machines, image scanners, compact disc drives, intelligent lighting, camera lenses, CNC machines and, more recently, in 3D printers.