28 Series Hybrid Stepper Motors

Overview

The 28 Series Hybrid Stepper Motors are compact motors developed for precise positioning and controlled rotary motion in equipment where installation space is limited.

With a standard 1.8° step angle, the series supports accurate and repeatable step-by-step positioning. The available configurations cover different phase arrangements, rated current, phase resistance, inductance, holding torque, rotor inertia, motor mass, and motor length to accommodate different electrical and mechanical requirements.

The 28 Series includes both two-phase and four-phase motor configurations, giving equipment designers greater flexibility when selecting a motor for a specific motion-control system. Plug-in configurations are also available for applications requiring convenient motor connection and integration.

Designed for compact motion-control systems, the 28 Series can be integrated into automated equipment and other electromechanical systems where controlled movement, suitable motor dimensions, and reliable positioning are required.

Key Features

Compact Frame for Space-Limited Equipment
The 28 Series is designed around a compact motor form factor, making it suitable for equipment where available installation space is limited.

Standard 1.8° Step Angle
A 1.8° step angle provides 200 full steps per revolution, supporting controlled incremental movement in applications requiring repeatable positioning.

Multiple Motor Configurations
Different combinations of phase current, resistance, inductance, holding torque, motor mass, and motor length are available within the series.

Plug-In Connection Options
Selected 28 Series configurations use plug-in connections, providing a convenient option for equipment integration and wiring arrangements.

Different Torque and Length Options
The available models cover different holding torque and motor length configurations, allowing equipment designers to select a motor according to their mechanical and motion requirements.

Stable Operating Performance
The series is specified for an ambient temperature range of -20°C to +50°C, with insulation resistance of at least 100 MΩ at 500 VDC.

Applications

The compact configuration and multiple electrical options of the 28 Series make it suitable for motion-control equipment where installation space, motor characteristics, and positioning requirements need to be considered together.

Technical Specifications

The 28 Series is available in different motor configurations to meet various motion-control requirements. The specifications below provide key information for selecting the appropriate motor for your application.

General Specifications

Parmeter	Specification
Motor Type	Two-Phase Hybrid Stepper Motor
Step Angle	1.8°
Step Angle Tolerance	±5%
Ambient Temperature	-20°C to +50°C
Maximum Temperature	80°C Max
Insulation Resistance	100 MΩ Min. at 500 VDC
Dielectric Strength	500 V AC, 1 minute
Resistance Tolerance	±10%
Inductance Tolerance	±20%

Model Options

Model	Step Angle	Number of Phase	Rated Current	Resistance / Phase	Inductance / Phase	Holding Torque	Motor Mass	Motor Length
28HJB431-1300-	1.8°	2	1.0 A	2.7 Ω	1.9 mH	0.06 N·m	0.10 kg	31 mm
28HJB431-8600-	1.8°	2	1.0 A	2.7 Ω	1.9 mH	0.077 N·m	0.10 kg	31 mm
28HJB432-1100-	1.8°	2	0.5 A	6.2 Ω	5.0 mH	0.049 N·m	0.10 kg	31.5 mm
28HJB431-1806-	1.8°	2	1.0 A	2.9 Ω	2.7 mH	0.074 N·m	0.10 kg	39.5 mm
28HJB450-1800-	1.8°	2	1.0 A	9.9 Ω	9.6 mH	0.18 N·m	0.18 kg	49.5 mm

28HJA Plug-In Stepper Motor Series

The 28HJA plug-in series is designed for compact motion-control applications where installation space is limited. With a standard 1.8° step angle, the series provides controlled positioning and reliable rotary motion for a range of equipment.

Available configurations cover different phase arrangements, rated currents, resistance, inductance, holding torque, rotor inertia, motor mass, and motor lengths, allowing the motor to be selected according to the mechanical and electrical requirements of the application.

Dimensions & Wiring

Refer to the dimensional drawings and wiring information below when selecting and integrating the 28 Series into your equipment.

FAQ

What is the step angle of the 28 Series stepper motors?

A: The standard step angle of the 28 Series is 1.8°, providing 200 full steps per revolution for controlled incremental motion.

What options are available for the 28 Series?

A: The 28 Series includes multiple configurations with different phase current, resistance, inductance, holding torque, motor mass, and motor length values. Selected models are also available in plug-in configurations.

How should I choose a 28 Series stepper motor?

A: Motor selection should be based on the required holding torque, operating current, available installation space, motor length, and the electrical and mechanical requirements of the equipment. The available 28 Series model specifications can be compared to identify a suitable configuration.