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The holding torque for a 34mm motor in this class is typically around 0.2 N·m (28 oz·in), which is modest compared to 40mm motors but sufficient for moving light gantries in 3D printers and engravers. More importantly, the is very low, allowing for smooth manual movement when the motor is not powered.
At 26V and 1.0A continuous, the motor’s surface temperature stabilizes at approximately 65°C – 75°C (ambient 25°C) without active cooling. This is within safe limits for Class B insulation (130°C). bj42d15 26v10 stepper motor datasheet exclusive
Stepper Motors in 3D Printing: Characteristics & Practical Guidelines
: While specific to exact sub-models, similar 0.84 A Keli motors (like the JK42HS34-0844) show a resistance of ~5.75 Ωcap omega and an inductance of ~9.3 mH. Deciphering the Model Name
The is a widely integrated, factory-standard NEMA 17 hybrid stepper motor manufactured by Keli Motor and prominently used across the Creality Ender 3 printer series . Finding explicit documentation for OEM components is notoriously difficult, making this comprehensive datasheet analysis the ultimate reference for configuring current limits, calculating driver Vref, and building custom motion control projects. Core Technical Specifications : Related search suggestions will follow
| Parameter | Value | | :--- | :--- | | | 1.8° ± 5% (full step) | | Number of Phases | 2 | | Frame Size | 42 x 42 mm | | Motor Length (Body) | 34 mm (including rear protrusion) | | Shaft Diameter | Φ5 mm | | Shaft Length | 24 mm (flat cut standard) | | Weight | 220 grams (approx.) | | Insulation Class | Class B (130°C) | | Dielectric Strength | 500 VAC for 1 minute | | Insulation Resistance | 100 MΩ minimum (500 VDC) |
Perfect for light-duty milling and laser engraving.
| Model Variant | Physical Length | Rated Current | Typical Use Case / Source | | :--- | :--- | :--- | :--- | | | 34mm | 0.8A / 1.5A Peak | Early Ender 3 X/Y axes | | BJ42D15-26V10 | 34mm | 0.8A / 1.5A Peak | Primary Creality / Elegoo standard motor | | BJ42D15-26V12 | 34mm | 0.8A / 1.5A Peak | Creality U20 Series | | BJ42D15-26V19 | 34mm | 0.8A / 1.5A Peak | Ender 5 Z-axis motor | | BJ42D22-23V01 | 40mm | 1.2A / 1.7A Peak | Extruder motor or high-torque applications | At 26V and 1
Because the "26V10" is not a standard retail model number, Keli's public datasheets do not list "BJ42D15-26V10". Instead, the closest public data correlates to the series, which lists a Rated Current of 1.5A and a Holding Torque of 210 mN.M.
The is a NEMA 17 hybrid stepper motor manufactured by Hunan Keli Motor Co., Ltd. , commonly found in Creality 3D printers like the Ender-3 S1 series. Although official factory datasheets for this specific variant are rare, community testing and cross-referencing from manufacturers provide the following core specifications: Technical Specifications Manufacturer: Hunan Keli Motor Co., Ltd. Form Factor: NEMA 17 (42 x 42 mm) Length: 34 mm (standard for the "15" series) Step Angle: 1.8∘1.8 raised to the composed with power (200 steps per revolution)
The BJ42D15 series is widely understood to be manufactured by (KELI). However, the "26V10" is generally considered a custom spec variant produced exclusively for Creality 3D and similar OEM brands.
: 34 mm (frequently referred to in vendor listings as a "42-34" motor) Step Angle : 1.8° (200 steps per full revolution) Number of Phases : 2 Shaft Diameter : 5 mm Holding Torque : ~0.4 N·m (approximately 2.86 kg·cm) ⚡ The Current & Voltage Breakdown
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