High Torque Hybrid Stepper Motor , 3 Phase Stepper Motor 208OZ.IN 15Kg.Cm

Step Accuracy ----------------------------------------------------- ±5%
Resistance Accuracy -------------------------------------------- ±10%
Inductance Accuracy -------------------------------------------- ±20% 
Temperature Rise ------------------------------------------------- 80°C MAX.
Ambient Temperature Range --------------------------------- -20°C~ +50°C 
Insulation Resistance ------------------------------------------  100M Ω MIN. 500V DC
Dielectric Strength ----------------------------------------------- 500V AC 1min
Radial Play ---------------------------------------------------------  0.02mm MAX. (450g Load)
End Play ------------------------------------------------------------  0.08mm MAX. (450g Load)
Max. radial force -------------------------------------------------- 75N
Max. axial force --------------------------------------------------- 15N

Electrical Specification of 12v motor: 

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.