A stepper motor is a mechanical device that directly converts electrical pulses into angular positions. The angle depends on the number of pulses, and it, together with other supporting stepper motor drive devices, forms a simple and low-cost open-loop system for control.
Open loop stepper motor product series models and parameters:
NEMA 11 Open Loop Stepper Motors
| Model | Frame Size (NEMA) | Length (mm) | Holding Torque (N.m) | Shaft Diameter (mm) | Shaft Length (mm) | Phase Current (A) | Phase Number | Lead Wires | Match driver |
| GR28HB30 | 11 | 30 | 0.06 | 5 | 24 | 0.7 | 2 | 4 | DM422 |
| GR28HB50 | 11 | 50 | 0.1 | 5 | 24 | 0.67 | 2 | 4 | DM422 |
NEMA 14 Open Loop Stepper Motors
| Model | Frame Size (NEMA) | Length (mm) | Holding Torque (N.m) | Shaft Diameter (mm) | Shaft Length (mm) | Phase Current (A) | Phase Number | Lead Wires | Match driver |
| GR35HB33 | 14 | 33 | 0.11 | 5 | 21 | 0.8 | 2 | 4 | DM422 |
| GR35HB51 | 14 | 51 | 0.35 | 5 | 21 | 1.2 | 2 | 4 | DM422 |
NEMA 17 Open Loop Stepper Motors
| Model | Frame Size (NEMA) | Length (mm) | Holding Torque (N.m) | Shaft Diameter (mm) | Shaft Length (mm) | Phase Current (A) | Phase Number | Lead Wires | Match driver |
| GR42HB40 | 17 | 40 | 0.4 | 5 | 24 | 0.8 | 2 | 4 | DM422 |
| GR42HB48 | 17 | 48 | 0.48 | 5 | 24 | 2.5 | 2 | 4 | DM422 |
| GR42HB60 | 17 | 60 | 0.7 | 5 | 24 | 1.7 | 2 | 4 | DM542 |
NEMA 23 Open Loop Stepper Motors
| Model | Frame Size (NEMA) | Length (mm) | Holding Torque (N.m) | Shaft Diameter (mm) | Shaft Length (mm) | Phase Current (A) | Phase Number | Lead Wires | Match driver |
| GR57HB56 | 23 | 56 | 1.2 | 8 | 21 | 3 | 2 | 4 | DM542 |
| GR57HB76 | 23 | 76 | 2.3 | 8 | 21 | 5 | 2 | 4 | DM542 |
| GR57HB80 | 23 | 80 | 2.4 | 8 | 21 | 5 | 2 | 4 | DM542 |
| GR57HB80-30 | 23 | 80 | 2.4 | 8 | 21 | 5 | 2 | 4 | DM542 |
| GR57HB100 | 23 | 100 | 2.8 | 8 | 30 | 5 | 2 | 4 | DM542 |
| GR57HB112 | 23 | 112 | 3 | 8 | 30 | 5 | 2 | 4 | DM542 |
NEMA 24 Open Loop Stepper Motors
| Model | Frame Size (NEMA) | Length (mm) | Holding Torque (N.m) | Shaft Diameter (mm) | Shaft Length (mm) | Phase Current (A) | Phase Number | Lead Wires | Match driver |
| GR60HB86 | 24 | 86 | 3 | 8 | 21 | 5 | 2 | 4 | DM542 |
| GR60HB86-30 | 24 | 86 | 3 | 8 | 30 | 5 | 2 | 4 | DM542 |
NEMA 34 Open Loop Stepper Motors
| Model | Frame Size (NEMA) | Length (mm) | Holding Torque (N.m) | Shaft Diameter (mm) | Shaft Length (mm) | Phase Current (A) | Phase Number | Lead Wires | Match driver |
| GR86HB80 | 34 | 80 | 4.5 | 14 | 32 | 6 | 2 | 4 | DM860 |
| GR86HB118 | 34 | 118 | 8.5 | 14 | 32 | 6 | 2 | 4 | DM860 |
| GR86HB156 | 34 | 156 | 12 | 14 | 32 | 6 | 2 | 4 | DM860 |
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