Bj42d15 26v10 Stepper Motor Datasheet Here
According to the official BJ42D15 26V10 stepper motor datasheet, here are the non-negotiable electrical limits. Exceeding these values will cause overheating and demagnetization.
| Parameter | Value | Unit | Notes | | :--- | :--- | :--- | :--- | | Rated Voltage | 2.6 | V DC | Per phase | | Rated Current | 1.0 | A | Per phase (Bipolar) | | Phase Resistance | 2.6 | Ω (Ohms) | At 25°C (R = V/I; 2.6/1.0 = 2.6Ω) | | Phase Inductance | 3.2 – 4.5 | mH | Typical range for this stack size | | Insulation Class | B (130°C) | - | Maximum allowable winding temperature | | Dielectric Strength | 500 | V AC | For 1 minute | | Insulation Resistance | 100 | MΩ (Min) | At 500 V DC |
The BJ42D15 26V10 is a 2-phase hybrid stepper motor with a 42 mm × 42 mm flange (NEMA 17 frame size). The designation suggests:
Typical applications: 3D printers, small CNC machines, medical pumps, office automation. bj42d15 26v10 stepper motor datasheet
| Parameter | Value | |------------------------|---------------------------| | Temperature rise | 80°C max (rated current) | | Ambient temperature | –20°C to +50°C | | Storage temperature | –25°C to +70°C | | IP rating | IP30 (open frame) |
Using the datasheet as a diagnostic tool.
| Symptom | Datasheet Check | Solution | | :--- | :--- | :--- | | Motor gets hot (70°C+) | Rated Current = 1.0A | Measure driver current. Reduce Vref until current is 1.0A peak. | | Low torque / skipped steps | Holding Torque = 0.22 N·m | Verify you are using microstepping (1/16 or 1/8). Increase supply voltage to 24V. | | Motor won't turn | Phase Resistance = 2.6Ω | Check continuity. If > 10Ω, winding is burned open. Replace motor. | | Noisy, growling sound | Inductance ~ 4mH | Lower the driver decay mode (set to mixed decay). | According to the official BJ42D15 26V10 stepper motor
The BJ42D15 26V10 is a bipolar stepper motor. It features 4 wires, corresponding to two independent phases.
The motor is rated for a maximum insulation class. Like most hybrid steppers, the surface temperature can rise to 80°C to 90°C during continuous operation at rated current. This is normal operation but may require mounting to a metal surface for heat dissipation if used in enclosed spaces.
The BJ42D15-26V10 is a compact, high-torque stepper motor commonly used in precision motion applications such as 3D printers, small CNCs, robotics, and automated lab equipment. Below is a structured, technically rich summary that captures the motor’s key electrical, mechanical, thermal, and application-related characteristics, along with practical guidance for selection, drive, and troubleshooting. This is written to be engaging and useful for engineers, hobbyists, and technical procurement teams. The BJ42D15-26V10 is a compact, high-torque stepper motor
The BJ42D15 26V10 is a "current-limited" motor. If you connect it directly to a 12V battery (without a chopper driver), Ohm's Law dictates: I = V / R = 12V / 2.6Ω = 4.6 Amps. The motor will reach 130°C in under 60 seconds and be destroyed.
The Driver Equation: Set your stepper driver's Vref current limit to 1.0A (Or 0.7A RMS if using a TMC silent driver).