Housing Material	Metal
Bearing at Output	Ball Bearings
Max.Radial Load(12mm from flange)	≤35N
Max.Shaft Axial Load	≤25N
Radial Play of Shaft (near to Flange)	≤0.07mm
Axial Play of Shaft	≤0.3mm
Backlash at No-load	1.5°

28HS Hybrid Stepping Motor Specifications:

28HS Planetary Gearbox Specification

Reduction ratio	3.71	5.18	13.76	19.2	26.8	51	71	99.5
Number of gear trains	1		2			3
Length(L2) mm	30		37			45
Max.rated torque kg.cm	5		7			9
Short time permissible torque kg.cm	15		21			27
Weight g	200		250			300

Stepper Motor Advantages

Low cost for control achieved
High torque at startup and low speeds
Ruggedness
Simplicity of construction
Can operate in an open loop control system
Low maintenance
Less likely to stall or slip
Will work in any environment
Can be used in robotics in a wide scale.
High reliability
The rotation angle of the motor is proportional to the input pulse.
The motor has full torque at standstill (if the windings are energized)
Precise positioning and repeatability of movement since good stepper motors have an accuracy of 3–5% of a step and this error is non-cumulative from one step to the next.
Excellent response to starting/stopping/reversing.
Very reliable since there are no contact brushes in the motor. Therefore, the life of the motor is simply dependent on the life of the bearing.
The motors response to digital input pulses provides open-loop control, making the motor simpler and less costly to control.
It is possible to achieve very low-speed synchronous rotation with a load that is directly coupled to the shaft.
A wide range of rotational speeds can be realized as the speed is proportional to the frequency of the input pulses.

Applications

As the stepper motor are digitally controlled using an input pulse, they are suitable for use with computer controlled systems.

They are used in numeric control of machine tools.

Used in tape drives, floppy disc drives, printers and electric watches.

The stepper motor also use in X-Y plotter and robotics.

It has wide application in textile industries and integrated circuit fabrications.

The other applications of the Stepper Motor are in spacecrafts launched for scientific explorations of the planets etc.

These motors also find a variety of commercial, medical and military applications and also used in the production of science fiction movies.

Stepper motors of microwatts are used in the wrist watches.

In the machine tool, the stepper motors with ratings of several tens of kilowatts is used.

Product Tags:

Nema11 Small Geared Stepper Motor , Planetary Stepper Motor 28mm*28mm