PSG8 Ball Screw Linear Actuator | High Load Precision Linear Motion Module

PSG8 Precision Ball Screw Linear Actuator

The PSG8 is a ball screw driven linear actuator that balances load capacity, precision, and cost for industrial automation, CNC equipment, semiconductor machinery, and inspection systems. It features a φ16 mm C7 precision ball screw with selectable leads (5/10/20 mm), driven by a 60 mm frame closed-loop stepper motor with 3 N·m holding torque. Rated thrust reaches 726 N with ±0.01 mm repeatability, and stroke spans up to 1100 mm — making it a strong candidate for applications where servo-grade performance is unnecessary but precision and load handling remain non-negotiable.

Core Advantages

• Maintain ±0.01 mm repeatability – ensures consistent positioning for precision assembly and inspection tasks.
• Choose from 3 lead options – 5/10/20 mm to optimize speed, thrust, and resolution per application.
• Reach speeds up to 333 mm/s – 20 mm lead configuration provides sufficient throughput for medium-speed automation.
• Carry horizontal loads up to 50 kg – the guide system handles heavy payloads without sacrificing accuracy.
• Hold position with 3 N·m holding torque – eliminates the need for an external brake in most vertical applications within rated load limits.
• Cover strokes from 50 to 1100 mm – accommodates a wide range of automation cell sizes.
• Support closed-loop stepper drivers – compatible with Leadshine, YAKOTEC, and SAMSR systems for enhanced reliability.
• Simplify installation with integrated home and limit sensor mounting grooves.

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

A single-piece aluminum extrusion forms the backbone of the PSG8, integrating both the linear guide ways and ball screw support bearings. The entire assembly is machined in one 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 (8 × 10 mm) compensates for minor shaft misalignment between motor and screw. The motor bracket accommodates left, right, bottom, or exposed mounting, so the actuator 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 PSG8 model code follows the structure below:

PSG8 - L5 - 100 - BC - 60 - C4 - LS-3M
 │       │    │     │    │    │     └── Motor: LS-3M (Leadshine, 3m cable)
 │       │    │     │    │    └──────── Sensors: C4 (Home + 2 limits)
 │       │    │     │    └─────────── Motor frame: 60 (stepper)
 │       │    │     └────────────── Motor position: BC (exposed)
 │       │    └─────────────── Stroke: 100mm
 │       └───────────────── Lead: L5=5mm, L10=10mm, L20=20mm
 └────────────────── Model: PSG8

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

Compatible Stepper Motors (60mm Frame, 3N·m)

Typical Applications

• Automated assembly lines
• CNC machine tools
• Semiconductor equipment
• Laser processing systems
• Vision inspection equipment
• Packaging machinery
• Material handling systems
• Industrial robotics

Customization Options

• Custom stroke lengths (outside 50–1100 mm range on request)
• Screw lead selection (5 / 10 / 20 mm) to optimize speed vs. thrust
• Motor mounting bracket for specific stepper brands (Leadshine, YAKOTEC, SAMSR)
• Motor orientation (left / right / bottom / exposed)
• Integrated limit/home sensor kits (NPN/PNP, magnetic reed, or optical)
• Protective bellows or metal covers for dusty or coolant-laden environments
• Vertical orientation brake kits for higher load safety
• Closed-loop encoder integration for position verification
• Special lubrication options for cleanroom or food-grade applications

Why Choose the PSG8?

If your application doesn't demand the speed of a servo but still requires the load capacity and precision of a ball screw, the PSG8 offers a straightforward alternative to the PSG8-200W. It shares the same mechanical platform — 50 kg horizontal load, 15 kg vertical — and the 3 N·m holding torque handles position-holding duties without a brake, which keeps system cost lower.

Compare it to a belt-driven module at a similar price point, and the PSG8's ball screw delivers much higher thrust at low speeds (up to 726 N) plus position-holding without power — two practical benefits for assembly, dispensing, or pressing stations where force application and stability matter more than raw speed.

In short: the PSG8 trades the 1000 mm/s top speed of the servo version for a lower-cost, simpler control setup. If force, precision, and value are your priorities, it's worth a look.

PINSL PSG8 – 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.