Bj42d15 26v10 Stepper Motor Datasheet Review

The diagram warped. The standard bipolar winding diagram re-drew itself into a toroidal knot—a Möbius coil. The pinouts changed. Instead of A+, A-, B+, B-, the labels shifted to: . Below the diagram, a single line of text appeared:

Note: Users often mistake these for 1.5 A motors; however, manufacturer data for the BJ42D15 series confirms a lower rated current of . Holding Torque: ~0.4 N·m (approx. 2.86 kg·cm) Shaft Diameter: 5 mm Electrical Characteristics

The motor features a 4-wire bipolar configuration. While wire colors can vary between batches, standard Creality-style wiring often follows this order: : Pins 1 and 4 (often Red/Blue or Black/Green) bj42d15 26v10 stepper motor datasheet

Note on Voltage: While the rated voltage is 2.6V, stepper motors are intended to be driven by constant-current chopper drivers (like the A4988 or TMC2209) supplied with much higher bus voltages (12V to 24V DC). The driver limits the current to the specified 1.0A, allowing the motor to achieve higher speeds without impedance choke. Wiring Diagram and Pinout

Approximately 0.35 Nm to 0.42 Nm (50-60 oz-in) Detent Torque: ~15 mNm Rotor Inertia: ~35 g·cm² Weight: ~250g to 300g Pinout and Wiring Configuration The diagram warped

In practice, when the motor is driven at its rated current, surface temperature can reach around 60.6°C under normal operation, which is well within the insulation class (typically Class B or higher) of these motors. The acceptable winding temperature under continuous operation is typically up to 80°C, but this can be confirmed by a product’s insulation rating.

The following data is extracted from typical manufacturer datasheets for the series, specifically focusing on the 26V10 variant. Specification Model Number BJ42D15-26V10 Frame Size NEMA 17 (42 x 42 mm) Step Angle 1.8° (200 steps/revolution) Phase Number 2-Phase Bipolar Rated Current 0.84A – 1.0A per phase Winding Resistance ~10 Ω per phase Holding Torque ~2.86 kg.cm – 0.4 N.m Operating Voltage Recommended 12V-24V DC Shaft Diameter Lead Wires 4 wires (Bipolar) 3. Key Features and Performance Instead of A+, A-, B+, B-, the labels shifted to:

The BJ42D15-26V10 is a stepper motor. It features two independent internal coils (Phase A and Phase B).

Current Limit=Vref×Driver FactorCurrent Limit equals Vref cross Driver Factor For example, on a standard A4988 driver with a