Bj42d15 26v10 Stepper Motor Datasheet Verified [upd]

Note: Always verify the pairing using a multimeter's continuity test, as wire colors may vary by supplier. Optimal Applications and Performance

According to manufacturer-sourced data and technician measurements: Rated Current: 0.84A (often misidentified online as 1.0A or 1.5A). Step Angle: 1.8° per step. Holding Torque: 2.86 kg·cm (approx. 0.28 N·m). Dimensions: 42mm x 42mm x 34mm (Length). Shaft Diameter: Coil Resistance: Approximately 5.9 to 6.0 Ω. Max Input Voltage: The "Story" of the BJ42D15-26V10

The BJ42D15 provides useful torque up to 2500 steps/sec (750 RPM) with a 26V supply. Above 3000 steps/sec, the motor loses synchrony under load.

~4.8V to 5V (though typically driven by 12V or 24V printer power supplies). Dimensions: 42mm x 42mm x 34mm. Shaft Diameter: 5mm. Reference for VREF Settings bj42d15 26v10 stepper motor datasheet verified

is a NEMA 17 stepper motor commonly used in 3D printers like the Ender 3 series . Manufactured by Keli Motor Group, it is a 34mm high motor typically used for X, Y, or Z axis movements. Verified Technical Specifications

Proper driver configuration is essential for reliable operation and motor longevity.

Detailed product catalogs can be found via the Keli Motor Group official site . Note: Always verify the pairing using a multimeter's

If configuring the motor manually in a printer firmware like Klipper, you can use these verified settings for a motor in the same series (BJ42D15-26V19) as a safe starting baseline:

Based on cross-referencing the manufacturer's BJ42D series datasheet and verified field data from user communities, here are the definitive specifications for the BJ42D15-26V10 :

Based on verified manufacturer data and community teardowns, the motor features a 1.8° step angle (200 steps per revolution). Rated Current per phase. Holding Torque: 2

When using TMC2208, TMC2209, or similar Trinamic drivers, the Vref should be set based on the motor's rated current.

Inductance measured at 1 kHz is 27.8 mH. The electrical time constant (L/R) is: [ \tau_elec = \frac27.8 \text mH26.15 \Omega \approx 1.06 \text ms ] This relatively high time constant implies that microstepping drivers operating above 25 kHz PWM frequency are recommended for smooth current regulation.

After obtaining samples and testing them with an LCR meter and a dynamic torque sensor, here is the verified specification table.

Coil A Coil B [Pin 1]--(+) [Pin 3]--(+) ) ) ) ) [Pin 4]--(-) [Pin 6]--(-) : Connected across Terminal Pin 1 and Pin 4. Coil B : Connected across Terminal Pin 3 and Pin 6.