The LA/LG/LK series linear modules are StepperOnline's latest high-precision, cost-effective solutions. Compared to traditional linear modules, they offer a streamlined design with improved efficiency and heat dissipation. Their straightforward installation and low maintenance costs make them ideal replacements for conventional pneumatic actuators in applications requiring higher performance and control precision. Below, we detail the key differences between these three series and their customization options.
- Key Differences
1.1. LA Series
The LA series features an integrated belt-driven design, comprising:
- Timing belt
- Linear guides
- Aluminum alloy profile
- Base plate
- Work platform
- Motor mount
- Timing pulley
- Limit switches
Advantages:
- High Precision: Achieves ±0.04 mm or better repeatability via precision timing pulleys and guide systems.
- High Speed: Low inertia from the flexible, lightweight belt enables speeds up to 2 m/s.
- Long Stroke: Supports extended travel (multi-meter lengths) through belt splicing, ideal for logistics conveyors. Note: Spliced belts may exhibit slightly reduced repeatability at splice points. Consult engineering support for applications exceeding standard stroke lengths.
1.2. LG Series
The LG series uses an integrated ball screw mechanism, including:
- Ball screw
- Linear guides
- Aluminum alloy profile
- Base plate
- Work platform
- Coupling
- Motor mount
- Limit switches
Advantages:
- Multi-Axis Compatibility: Well-suited for X/Y/Z-axis applications. The ball screw's inherent resistance to back-driving provides added safety for vertical (Z-axis) use, though a brake is recommended for fail-safe holding.
- Full Enclosure: Protects against dust and debris, reducing maintenance and preventing screw damage.
- Ultra-High Precision: Ball screw drive delivers ±0.01 mm repeatability.
- Heavy Load Capacity: Supports 120 kg (horizontal) and 50 kg (vertical) loads.
1.3. LK Series
The LK series combines a motor-driven platform with:
- Ball screw nut
- Linear guide slider (integrated with the screw nut)
- Semi-enclosed design with metal cover
Advantages:
- Enhanced Protection: Metal cover shields the screw from contaminants.
- Precision & Rigidity: Optimized via FEA (Finite Element Analysis) for ±0.01 mm repeatability under high loads.
- Reliable & Test-Friendly: Critical metrics (e.g., parallelism, starting torque) are easily monitored for predictive maintenance.
- Customization Guide
To help you better understand and configure our linear modules, detailed manuals are available in the product download section (categorized by width dimensions, e.g., LA5/8/12, LG5/8/12…).
Model Numbering Explained in Manuals
2.1. Motor Compatibility
Each series supports at least two motor mounting sizes to match your requirements.
2.2. Motor Mounting Positions
Four configurable positions (illustrated in the manuals) accommodate space-constrained installations.
2.3. Lead Selection
- Smaller lead: Higher thrust (ideal for heavy loads).
- Larger lead: Higher speed (ideal for lightweight applications).
- Applies to both ball screws (LG/LK) and timing belts (LA).
2.4. Sensor Configuration
- Standard: 3 sensors included (mounting positions adjustable).
- Customizable: Request fewer or additional sensors as needed.
2.5. Stroke Length
- Available in 50 mm increments (e.g., the LG8 series offers 50–1100 mm in approximately 20+ options).
- Varies by series; refer to individual manuals for specific ranges.
StepperOnline linear modules are designed for rapid deployment with short lead times, low minimum order quantities, and straightforward installation. For technical inquiries or custom configurations, please contact our engineering support team.