Bj42d15 26v10 Stepper Motor Datasheet Access
BJ42D15-26V10 is a NEMA 17 hybrid stepper motor manufactured by Keli Motor, commonly used as an OEM component in Creality 3D printers
- 3D Printers: (Prusa i3, Ender series upgrades) for X, Y, and Z-axis movement.
- CNC Routers/Engravers: Small desktop CNC machines for spindle positioning.
- Camera Sliders/Pan-Tilt Units: Precise, smooth movement for videography equipment.
- Medical Equipment: Syringe pumps and small diagnostic machinery.
- Textile Machinery: Thread feeding and fabric manipulation mechanisms.
- Holding Torque (Rated Current): ~0.22 N·m (22 N·cm or 31 oz·in). Note: This is lower than a standard NEMA 17 (usually 0.4 N·m) due to the short D15 stack.
- Detent Torque (Power off): ~0.012 N·m (The magnetic resistance felt when turning by hand).
- Maximum Speed (Practical): 3000 RPM (no load); 500 RPM (rated torque load).
- Torque at 500 PPS (1 rev/sec): ~0.20 N·m.
- Torque at 1000 PPS (2 rev/sec): ~0.12 N·m.
- Driver selection: pick a modern current-control driver (e.g., DRVxxxx, A4988/Trinamic/TI/Pololu-class drivers) that supports your current and microstepping needs and can handle a 26 V supply.
- Power supply: choose a well-regulated DC supply rated for peak current demands of all motors in the system and with low ESR capacitors to handle switching transients.
- Wiring: keep stepper supply and motor wiring twisted and routed away from sensitive analog lines; add ferrite beads if electromagnetic interference is a concern.
- Encoder/closed-loop: consider closed-loop stepper drivers if you need guaranteed positioning under variable load — they correct missed steps but add cost/complexity.
- Thermal management: if operating near the rated current continuously, implement duty cycles, heatsinks, or forced air.
Part 9: Procurement and Sourcing (Finding the Datasheet)
Step Angle
The following table summarizes the core mechanical and electrical ratings for this model. Specification 1.8° (200 steps per revolution) Phase Count Rated Voltage Rated Current 1.5 A / Phase Phase Resistance 2.6 Ω ± 10% Phase Inductance 4.8 mH ± 20% Holding Torque 420 mN.m (approx. 60 oz-in) Detent Torque Rotor Inertia Insulation Class Class B (130°C) Weight Physical Dimensions bj42d15 26v10 stepper motor datasheet