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NEMA 17 KS-42HB-47L Stepper Motor with Planetary Gearbox | 12/24V 420mN.m 1.8°
NEMA 17 Stepper Motor 42HB-47L
Planetary Gearbox · 12/24V DC · 1.8° step angle
Model
KS-42HB-47L
Motor Type
Bipolar Stepper
2-phase, 1.68A/phase
2-phase, 1.68A/phase
Gearbox Type
Planetary Reducer
ratio 1:5.18 · backlash optimized
ratio 1:5.18 · backlash optimized
Holding Torque
420 mN·m
@ rated current | 1.68A/phase
@ rated current | 1.68A/phase
⚡ Voltage 12/24V DC
🔁 Step angle 1.8° full-step
📐 Shaft 6mm D-cut (5.5mm flat)
⚙️ Phase 2
✓ Custom samples: 10-25 days
✓ Bulk order pricing available
✓ ISO 9001, CE & RoHS Compliant
Affiliated Classification:
NEMA Stepper Motor
NEMA 17(42mm)
Planetary Gear Stepper Motor
NEMA 17 Planetary Gearbox (42mm)
DC Gear Motor
Product Accessories:
Product Description
⚙️ NEMA 17 Bipolar Stepper Motor — Series 42HB-47L
| 📌 Model | KS-42HB-47L (Planetary Gearbox Integrated) |
| 🏷️ Product Name | Nema 17 Stepper Motor with 5.18:1 Gearbox |
| 🔁 Motor Type | Bipolar Stepper, 2-phase |
| 📏 Motor Size (mm) | 42mm × 47mm (frame length 47mm + gearbox) |
| ⚡ Driving Voltage | 12V / 24V DC |
| 🔌 Rated Current / Phase | 1.68A |
| 🌀 Reduction Ratio | 1 : 5.18 (Planetary type) |
| 🎯 Step Angle (degrees) | 1.8° ±5% |
| 🧲 Phase Resistance | 1.5 Ω ±10% |
| 🔩 Shaft Diameter | 6mm (D-Shape 5.5mm flat) |
| 📏 Shaft Length | 16mm |
| 💪 Holding Torque | 420 mN.m (after gearbox output) |
| ⚙️ Number of Leads | 4 leads |
| 🎨 Connection (Color Code) | A+: Black, A-: Green, B+: Red, B-: Blue |
| ⚖️ Weight | 555g |
| 🏭 Manufacturer | Keshuo Motor (Precision Motion Manufacturer) |
| 📡 Phase | 2 phases |
| 🖨️ Key Applications | 3D Printer, CNC Machine, Laser Engraving, Medical Equipment, Automation Systems |
📐 Mechanical Dimensions & CAD Outline
📐 Full-scale drawing — dimensions in mm | flange 42mm
🔌🔗 Wiring & Phase Assignment — 4-Lead Connection
| Signal / Coil | Wire Color | Polarity | Description |
|---|---|---|---|
| Phase A+ | Black | Positive | Coil A forward |
| Phase A- | Green | Negative | Coil A return |
| Phase B+ | Red | Positive | Coil B forward |
| Phase B- | Blue | Negative | Coil B return |
⚡ Bipolar drive sequence recommended (1.68A/phase)
🪐 Planetary Gearbox Specifications (1:5.18 Ratio)
| ⚙️ Gearbox Type | Precision Planetary Reducer |
| 📉 Reduction Ratio | 5.18 : 1 (optimized for high torque density) |
| 🔁 Backlash (max) | ≤ 1.5° (standard industrial grade) |
| 💡 Max Permissible Torque | 2.0 N·m (intermittent duty) |
| 🔧 Efficiency | > 92% (smooth power transmission) |
| 🌡️ Operating Temperature | -20°C ~ +50°C |
| 🛠️ Lubrication | Grease-filled, maintenance-free |
🔥 KEYWORDS Nema 17 Stepper Motor KS-42HB-47L Planetary Stepper Motor 1.8° Step Angle 420mN.m Holding Torque Bipolar Stepper 1.68A 5.18:1 Gearbox CNC Stepper Motor 3D Printer Motor Laser Engraving Motor Medical Automation Motor KESHUO MOTOR 12V/24V DC Stepper Custom Stepper OEM NEMA17 Planetary Gearbox High Torque Density 4-Lead Connection
certified motion partner — Keshuo Motor | precision engineering since 2008
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