Planetary Geared Stepper Motor 28mm Series with 1.8 Degree Step Angle

Technical Specification
KC-GMP28-28HYB
Planetary Gear Motor — Optimized for precise integration and durable mechanical torque output
Motor Type
2-Phase Stepper Motor
Gearbox Type
Planetary Reduction
Motor Diameter
28 mm
Step Angle
1.8°
Max Rated Torque
20 kg·cm
Shaft Configuration
Round Shaft Ø6 mm
✓ Custom samples: 10–20 days
✓ Bulk order pricing available
✓ ISO 9001, CE & RoHS Compliant
Applications: Laboratory titration equipment, Automated optical inspection systems, Medical liquid dispensing pumps, Precision coordinate measuring machines, Semiconductor wafer handling mechanisms, Industrial label printing machines, Automated focus adjustment modules, Electronic component assembly fixtures.
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Planetary Geared Stepper Motor Performance Specifications

Parameter Specification
Model Designation KC-GMP28-28HYB
Number of Phases 2 phases
Step Angle 1.8°/step
Phase Resistance 5.6 ohm or 9.2 ohm
Phase Inductance 3.4 mH or 7.2 mH
Phase Current 0.67 A
Holding Torque 0.08 N·m or 0.15 N·m
Max Rated Torque 20 kg·cm
Short Time Permissible Torque 50 kg·cm
Motor Weight 120 g or 250 g

Planetary Gearbox Mechanical Parameters and Reduction Ratios

Reduction Ratio Option Gearbox Length Gearbox Weight Gearbox Type
4:1 / 5:1 23.2 mm 0.35 kg Planetary gearbox
16:1 / 20:1 / 27.5:1 / 64:1 29.0 mm 0.45 kg Planetary gearbox
100:1 / 138:1 / 151:1 24.6 mm 0.55 kg Planetary gearbox
Motor Body Dimensions 28 mm × 28 mm Ø6 mm output shaft Round shaft

KC-GMP28-28HYB Planetary Geared Stepper Motor Dimensions Drawing

Technical dimensions drawing showing 28 mm diameter and mounting details

Kechen Motor planetary geared stepper motor KC-GMP28-28HYB technical dimensions drawing showing 28mm diameter and mounting details.

KC-GMP28-28HYB Series Planetary Geared Stepper Motor Dimensions Drawing

Engineering Advantages and Integration Features

  • High torque transmission: Supports max rated torque up to 20 kg·cm and short time permissible torque up to 50 kg·cm for robust industrial applications
  • Precise motion control: Features a standard 1.8° step angle combined with multiple reduction ratios ranging from 4:1 to 151:1 for accurate positioning
  • Optimized integration: Standard 28 mm square flange frame with 4-M2.5 mounting holes and 23 mm pitch ensures seamless installation in constrained spaces
  • Durable mechanical build: Equipped with a Ø6 mm round output shaft featuring precise tolerance control and robust AWG26 lead wire configuration
  • Compatible electrical ratings: Operates reliably with a 0.67 A phase current, adaptable across dual phase resistance and inductance options
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