General Specification
- Step Angle Accuracy: ±5%（full step, no load）
- Resistance Accuracy: ±10%
- Inductance Accuracy: ±20%
- Temperature Rise: 80℃ max （rated current, 2 phase on）
- Ambient Temperature: -20℃~+50℃
- Insulation Resistance: 100MΩ min，500VDC
- Dielectric Strength: 500VAC for one minute
- Rotation: CCW
- Insulation Class: B(130℃)
Defination of Part number
20 | HSL | 30 | D | F | 48 | TRX |
Frame size | Liner hybrid stepper motor | Length | Step angle* | Lead wire** | Winding Type | Screw Type |
*: This code shows the stepper angle of the motor. M = 0.9°; D =1.8°.
**: This code shows the lead wire number of the motor, the detail code defination is: F = 4; V = 5; S = 6; E = 8.
Specifications
| Model | Length (mm) | Current (A) | Resistance (Ω) | Inductance (mH) | Holding Torque (N.m) | Rotor Inertia (g.cm²) | Lead wires/pins | Weight (g) |
| 20HSL30DF48-TRX | 30 | 0.5 | 4.8 | 1.3 | 0.018 | 2.5 | 4 | 50 |
| 20HSL42DF75-TRX | 42 | 0.5 | 7.5 | 2.4 | 0.025 | 4.5 | 4 | 90 |
| Screw Diameter(mm) | Lead(mm) | Step Length(mm) | L2 |
| Tr3.5 | 0.3048 | 0.001524 | Customizable |
| Tr3.5 | 1 | 0.005 | Customizable |
| Tr3.5 | 4 | 0.02 | Customizable |
| Tr5 | 1 | 0.005 | Customizable |
| Tr5 | 2 | 0.01 | Customizable |
In-Depth Applications for the NEMA 8 Linear Stepper Motor
The 20HSL’s miniature size, high thrust-to-size ratio, and direct drive capability make it a premier choice for precision instruments. Key application areas include:
- Medical Devices: Ideal for portable syringe pumps, insulin pumps, and handheld diagnostic analyzers where a compact NEMA 8 linear stepper motor is critical for saving space.
- Laboratory Automation: Provides precise vertical (Z-axis) movement for automated pipetting modules, sample grippers, and liquid handling systems that require high repeatability.
- Optical & Vision Systems: Efficiently drives lens focusing mechanisms and laser alignment stages where the fine resolution of this NEMA 8 linear stepper motor ensures accurate positioning.
Outline
Customization
 |  |  |  | |  |
| Shaft | Encoder | Brake | Connector | Pulley | Gearbox |
| Item | Description |
|---|---|
| Shaft Extensions | Motors can be configured with single or double-ended shafts, manufactured to your specific length. |
| Encoder Options | We offer integration with various encoders to meet specific resolution and application needs. |
| Brake Options | Motors can be equipped with an optional brake, available with or without a manual hand release. |
| Cable Harnesses | Custom cable harnesses, with or without connectors, are available upon request. |
| Pulleys & Pinion Gears | Pulleys or pinion gears can be supplied and mounted to your specifications. |
| Gearbox Integration | Most motors can be paired with various gearbox types, including planetary, worm wheel, and parallel shaft gearboxes. |
Frequently Asked Questions (FAQ)
Q: What is the main advantage of this NEMA 8 linear stepper motor?
A: The 20HSL Series NEMA 8 linear stepper motor integrates the lead screw directly into the rotor. This eliminates the need for external couplings, resulting in a significantly shorter overall length and higher system rigidity compared to traditional motor-plus-screw assemblies.
Q: Can I customize the screw length for this motor?
A: Yes. We understand that every design is unique. The lead screw length (L2) of our NEMA 8 linear stepper motor can be customized to fit your specific stroke requirements. We also offer different lead options (Tr3.5, Tr5).
Q: What type of driver is required?
A: This is a 2-phase bipolar stepper motor. It requires a standard bipolar stepper motor driver. Since the current is relatively low (0.5A), a compact driver is sufficient to power this NEMA 8 linear stepper motor effectively.
Q: Is this motor suitable for continuous operation?
A: While stepper motors are designed for positioning, the 20HSL series is built with high-quality materials to handle demanding duty cycles. However, as with any NEMA 8 linear stepper motor, monitoring the temperature rise (rated for 80K) is important during continuous high-speed operation.