Specifications:
The document provides detailed specifications for NEMA Size 34 step motors, highlighting their cost-effectiveness and availability of custom windings at no additional cost. The motors are available in both unipolar and bipolar configurations, with various models offering different dimensions, amperage, torque, resistance, inductance, inertia, and weight.

Unipolar Motors:
The unipolar motors are categorized by their maximum dimension 'A' and include models such as 8618S-01E, 8618S-02E, and 8618S-03E, among others. These models vary in amperage per phase, torque (both in oz-in and N-m), resistance, inductance, inertia, and weight. All models have 8 leads.

Bipolar Motors:
Bipolar motors are also categorized by dimension 'A' and include models like 8618S-01S, 8618S-01P, and 8618S-02S. These models differ in amperage per phase, torque, resistance, inductance, inertia, and weight, with 4 leads each.

Torque Curves:
The document includes torque curves for various models, illustrating the relationship between speed (in pulses per second and revolutions per second) and torque (in oz-in and N-m). Models such as 8618S-02P, 8618S-03P, and 8618M-03P are highlighted with their respective voltage and amperage specifications.

Additional Information:
Users are encouraged to complete an application data sheet for different windings. The power supply voltage can vary as long as the driver output current is controlled at the rated current. Additional bipolar torque curves can be obtained from Lin Engineering. Specifications are subject to change without notice, and operating temperatures are referenced on page 94. The motors are based on unipolar ratings but can perform at both bipolar series and parallel ratings.