Linear module

Product Overview
The 20mm PM stepper linear actuator is available in External, Non-Captive and Kaptive configurations. Custom screw-end machining and stroke length options are offered to adapt the actuator to varied industrial applications.

Motor Characteristics
20mm Frame

• Polarity: Bi-Polar
• Linear Actuator Type: External, Non-captive, Kaptive
• Step Angle: 7.5° and 15°
• Winding / Electrical (7.5°): 5V / 12V
• Phase Current (7.5°): 5V = 370mA, 12V = 160mA
• Phase Resistance (7.5°): 5V = 13.5Ω, 12V = 74.5Ω
• Phase Inductance (7.5°): 5V = 6.5mH, 12V = 36mH
• Winding / Electrical (15°): 5V / 12V
• Phase Current (15°): 5V = 370mA, 12V = 160mA
• Phase Resistance (15°): 5V = 13.5Ω, 12V = 76Ω
• Phase Inductance (15°): 5V = 4mH, 12V = 25mH
• Power Consumption: 3.4W
• Rotor Inertia: 1.05 g·cm²
• Insulation Class: B
• Insulation Resistance: 100 MΩ
• Mass: 35 g

Available Lead Screw and Travel per Step
Table (Step Angle | Screw lead (mm / inch) | Travel per step (mm / inch) | Screw lead code):
7.5° | 0.3 mm / 0.0118 in | 0.00625 mm / 0.00025 in | AF
7.5° | 0.6096 mm / 0.024 in | 0.0127 mm / 0.0005 in | AA
7.5° | 1.0 mm / 0.03937 in | 0.02083 mm / 0.00082 in | AB
7.5° | 1.2192 mm / 0.048 in | 0.0254 mm / 0.001 in | B
7.5° | 2.0 mm / 0.07874 in | 0.04167 mm / 0.00164 in | G
7.5° | 2.4384 mm / 0.096 in | 0.0508 mm / 0.002 in | J
7.5° | 4.0 mm / 0.15748 in | 0.0833 mm / 0.00328 in | M
15° | 0.3 mm / 0.0118 in | 0.0125 mm / 0.00049 in | AF
15° | 0.6096 mm / 0.024 in | 0.0254 mm / 0.001 in | AA
15° | 1.0 mm / 0.03937 in | 0.0417 mm / 0.00164 in | AB
15° | 1.2192 mm / 0.048 in | 0.0508 mm / 0.002 in | B
15° | 2.0 mm / 0.07874 in | 0.0833 mm / 0.00328 in | G
15° | 2.4384 mm / 0.096 in | 0.1016 mm / 0.004 in | J
15° | 4.0 mm / 0.15748 in | 0.1667 mm / 0.00656 in | M

Dimensional Drawings
Available for External, Non-Captive and Kaptive types (drawings and images provided).
Dimensional table (Stroke X (mm) | Front extension A | Total extension B | Body length C (Max)):
14 | 13.5 ±0.25 | 40.5 | 30.5
18 | 17.5 ±0.25 | 48.5 | 34.5
25 | 24.5 ±0.25 | 62.5 | 41.5
31 | 30.5 ±0.25 | 74.5 | 47.5

Speed Thrust Curves
Speed-thrust curve graphs are provided for the 20mm PM actuator in the product documentation.

Options

• Screw End Machining
• Teflon Coating: If the application requires a greaseless screw and nut combination, DINGS offers Teflon coated lead screws for stepper linear actuators. Teflon coated lead screws can improve lifecycle and thrust generation compared to conventional SUS lead screws. Coating is available across all lead screw options and for all PM linear actuator types (External, Non-Captive, Kaptive).

Technical specifications

• Frame: 20mm
• Polarity: Bi-Polar
• Actuator types: External, Non-captive, Kaptive
• Step angles supported: 7.5°, 15°
• Lead screw options and travel per step: AF / AA / AB / B / G / J / M (see detailed table)
• Electrical: multiple winding options (5V / 12V) with corresponding phase currents, resistances and inductances
• Power consumption: 3.4W
• Rotor inertia: 1.05 g·cm²
• Insulation class: B; Insulation resistance: 100 MΩ
• Mass: 35 g
• Available options: Screw end machining, Teflon coated lead screws