Through dynamometer testing, here are the real-world torque values (in Nm) at various speeds, using a 36V DC power supply and a microstepping driver (16 microsteps).
Manufacturer datasheet (BJ series, 42mm frame, 15mm stack, 26V1.0A winding) – cross-referenced with original factory spec sheets. bj42d15 26v10 stepper motor datasheet verified
Based on manufacturer data and verified community testing for the BJ42D15 series, the primary specifications are as follows: Specification BJ42D15-26V10 Type 2-Phase Bipolar Hybrid Stepper Step Angle 1.8∘1.8 raised to the composed with power (200 steps per revolution) Rated Current 0.84 A per phase Rated Voltage 26V (Optimized for 24V systems) Holding Torque 2.86 kg·cm (approx. 0.28 N·m) Dimensions 42 x 42 x 34 mm Shaft Diameter 5 mm (standard NEMA 17) Key Features Through dynamometer testing, here are the real-world torque