Linear axes without lubricant – is that possible?
A wide range of linear motion systems are available today. Many use recirculating ball bearings to provide linear travel for carriages and positioning applications. These systems typically require continuous lubrication — which can be a major drawback in certain environments.
Is there an alternative?
Recirculating ball bearings rely on consistent lubrication to run reliably.
However, applications with strict hygiene requirements often need to avoid lubricants altogether.
In these cases, linear modules and linear axes can be built using high‑performance, tribologically optimized polymers. Sliding elements made from these materials operate quietly, are maintenance‑free, and do not require grease or oil.
Engineers who use polymer‑based linear motion systems can eliminate lubricants and reduce operating costs.
Benefits of lubrication‑free linear modules
- Lower overall system costs
- Faster, simpler maintenance
- Reduced maintenance expenses
- Less unplanned downtime
- Increased equipment availability
Lower operating costs
Mechanical designers and maintenance teams increasingly use tribologically optimized polymers in moving applications. Compared with metal-based components, polymer sliding elements can reduce costs by up to 40%.
Reduced energy consumption
On packaging machines and automation equipment, lubrication work often requires stopping the system. Frequent stops and restarts consume additional energy. Lubrication‑free polymer systems reduce downtime and can help lower total energy usage.
Significantly lower maintenance requirements
Eliminating lubrication saves time. Applying the correct lubricant in the right amount and at the right interval requires training and is often time‑consuming. Using lubrication‑free, high‑performance polymers simplifies maintenance and minimizes machine stoppages.
igus® linear modules for every application
igus offers a wide range of linear modules with lead screw drives. They are available in many configurations and can be combined with motors, spacers, hand wheels, and other accessories.
Systems can be configured online in just a few steps.
Design of a lubrication‑free linear axis with a lead screw drive
- Maintenance‑free operation using polymer bearings and polymer nuts
- Shaft options: aluminum, steel, or carbon fibre
- Eight trapezoidal thread pitches and four high‑helix thread pitches available
- Housing options: stainless steel, aluminum, zinc, or polymer
- Lead screws available to drawing or supplied as standard drive shafts
- Wide selection of accessories
Design of a lubrication‑free linear axis with a toothed‑belt drive
Linear axes with toothed‑belt drives are ideal for positioning and adjustment tasks. Polymer and aluminum construction reduces moving mass, improving efficiency.
- End supports with integrated ball bearings
- Lubrication‑free linear guide using polymer plain bearings
- Multiple carriage lengths available
- Polyurethane (PU) or neoprene toothed belts
- Hard‑anodized aluminum components
