Electric actuator DLG28 series

linearball screwstepper

Product Overview
DLG series integrates a stepper motor, a ball screw and a guide to deliver precise linear motion. Guide-supported DLG reduces external mechanical components such as couplings, enabling compact, high-precision device positioning. Size 28 (NEMA 11) is the smallest DLG model with a standard stroke of 30 mm. Non-guide variant DRS is available as an option.

Motor Characteristics
Model | Rated Voltage [V] | Current [A (RMS)] | Resistance [Ω] | Inductance [mH] | Lead wires | Motor length L [mm]
DLG28S1 | 2.1 | 1 | 2.1 | 1.5 | 4 | 33.5
DLG28D1 | 3.9 | 0.95 | 4.1 | 4 | 4 | 45

Actuator Characteristics
Stroke: 30 mm
Maximum thrust: 30 N
Repeat positioning accuracy: 0.01 mm
Optional ball screw lead: 1 mm / 2 mm

Dimensional Drawings

• External actuator image
• External dimension drawing (mechanical drawing)

Speed-Thrust Curves and Test Conditions
Speed-thrust curves provided for Single Stack and Double Stack configurations. Test condition: 24 Vdc, driver DS-OLS2-FPD (bipolar chopper) at rated current (RMS). Motor thrust varies with voltage and driver; allow 50% thrust margin in design.

Options — Encoder
Available resolutions (CPR): 100, 108, 120, 125, 128, 200, 250, 256, 300, 360, 400, 500. Output types: single-ended or differential (multiple code options).

Options — Power-Off Brake (Size 11)
Rated voltage: DC 24 V ±5%
Resistance: 143.7 Ω ±10%
Power: 5.5 W
Hold torque: >0.3 N·m
Insulation class: B
Insulation resistance: >100 MΩ (DC 500 V)
Dielectric strength: AC 1000 V for 1 s
Retraction time: 50 ms
Release time: 50 ms
Gyration gap: 1°
Emergency brake cycle: 200 cycles
Lifetime: 500,000 cycles
Noise level: <60 dB

Technical Specifications

• Series / Model: DLG/DRS — DLG28 (Size 11 / 28 mm)
• Stroke: 30 mm
• Maximum thrust: 30 N
• Repeat positioning accuracy: 0.01 mm
• Ball screw lead (optional): 1 mm, 2 mm
• Motor variants: DLG28S1 (2.1 V, 1 A RMS, L = 33.5 mm), DLG28D1 (3.9 V, 0.95 A RMS, L = 45 mm)
• Encoder options: multiple CPR choices, single-ended or differential outputs
• Brake option (Size 11): DC 24 V, 5.5 W, >0.3 N·m hold torque, specified lifetime
• Speed-thrust curves tested at 24 Vdc with DS-OLS2-FPD driver; design margin recommended