PSG4 Single Axis Linear Stage Precision Ball Screw Linear Actuator

PSG4 Precision Ball Screw Linear Stage

The PSG4 is a compact, stepper-driven single-axis linear stage built for precision positioning applications where cost-effectiveness and space efficiency are primary considerations. It features a φ10 mm C7 precision ball screw with selectable leads (2/5/10 mm), driven by a 42 mm frame stepper motor with 0.77 N·m holding torque, delivering a rated thrust of 424 N and ±0.01 mm repeatability. With a maximum stroke of 800 mm and a slim 44 mm width, it fits naturally into inspection stations, light assembly cells, and CNC auxiliary axes where servo performance is unnecessary but precision remains essential.

Core Advantages

• Maintain ±0.01 mm repeatability – ensures consistent positioning for precision assembly and inspection tasks.
• Choose from 3 lead options – 2/5/10 mm to optimize speed, thrust, and resolution per application.
• Reach speeds up to 166 mm/s – 10 mm lead configuration provides sufficient throughput for medium-speed automation.
• Carry horizontal loads up to 25 kg – 2 mm lead configuration delivers high thrust for light pressing and positioning.
• Hold position with 0.77 N·m holding torque – eliminates the need for an external brake in most vertical applications within rated limits.
• Cover strokes from 50 to 800 mm – accommodates a wide range of automation cell sizes.
• Fit into tight spaces – 44 mm width profile allows dense packaging in multi-axis systems.
• Simplify installation with four motor mounting configurations (exposed, bottom, left, right).

Technical Specifications

Lead – Speed – Load – Thrust Reference

* Load values are based on horizontal mounting with 0.3 g acceleration. Vertical load ratings assume appropriate duty cycle and acceleration — refer to the engineering datasheet for application-specific verification.

Product Structure View

Design & Performance Highlights

The PSG4 is built around a 44 mm wide aluminum extrusion that integrates both the linear guide ways and ball screw support bearings. The entire assembly is machined in a single setup, which keeps the screw axis and guide rails parallel without requiring field alignment — a time-saver during installation.

Backlash is addressed at the factory with a preloaded ball nut, and the flexible coupling (7 × 5 mm) compensates for minor motor shaft misalignment. The motor bracket supports four orientation configurations (exposed, bottom, left, and right), so the stage adapts to your machine layout without custom parts. Sensor mounting grooves come pre-machined for home and limit switches, with NPN-type sensors offered as standard.

Ordering Information

The PSG4 model code follows the structure below:

PSG4 - L5 - 100 - BC - 42 - C4 - LS-3M
 │       │    │     │    │    │     └── Motor: LS-3M (Leadshine, 3m cable)
 │       │    │     │    │    └──────── Sensors: C4 (Home + 2 limits)
 │       │    │     │    └─────────── Motor frame: 42 (stepper)
 │       │    │     └────────────── Motor position: BC (exposed)
 │       │    └─────────────── Stroke: 100mm
 │       └───────────────── Lead: L5=5mm, L10=10mm, L20=20mm
 └────────────────── Model: PSG4

Motor position options: BC (exposed), BM (bottom), BL (left folded), BR (right folded).
Sensor options: C (home only), C4 (home + 2 limits), E (no sensor).
Motor brand codes: LS (Leadshine), YK (Yakotec).

Compatible Stepper Motors (42mm Frame)

Typical Applications

• Automation assembly lines
• CNC machinery
• Semiconductor equipment
• Precision inspection systems
• Robotics
• Laboratory automation
• Pick-and-place machines
• Packaging and handling

Customization Options

• Custom stroke lengths (outside 50–800 mm range on request)
• Screw lead selection (2 / 5 / 10 mm) to optimize speed vs. thrust
• Motor mounting bracket for specific stepper brands (Leadshine, Yakotec)
• Motor orientation (exposed / bottom / left / right)
• Integrated limit/home sensor kits (NPN/PNP, magnetic reed, or optical)
• Protective bellows or metal covers for dusty environments
• Vertical orientation brake kits for higher load safety
• Special lubrication options for cleanroom applications

Why Choose the PSG4?

For automation engineers working with budget-conscious projects where servo performance isn't required, the PSG4 offers a cost-effective alternative to the servo-driven PSG4-100W. It shares the same 44 mm wide mechanical platform and stroke range (50–800 mm), but replaces the servo with a stepper motor and drive, significantly reducing system cost while maintaining ±0.01 mm repeatability and the same mechanical precision.

Compared to belt-driven modules in the same price range, the PSG4's ball screw drive delivers substantially higher thrust at low speeds (up to 424 N) and maintains position without power — a practical benefit for inspection, dispensing, or light assembly stations where force application and positional stability matter more than raw speed.

When compared to the servo version, the PSG4 trades maximum speed (166 mm/s vs. 500 mm/s) and dynamic response for lower cost and simpler control architecture. If your application runs at moderate speeds and doesn't require the acceleration or velocity control of a servo, the PSG4 delivers the same mechanical precision at a more accessible price point.

PINSL PSG4 – precision motion, optimized for value.

Inquiry & Customization

We offer customized stroke lengths, motor configurations, sensor arrangements, mounting orientations, and complete motion system integration. Contact our application engineering team for technical drawings, CAD models, or OEM/ODM automation solutions tailored to your specific requirements.