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The drylin® linear bearings enable maintenance-free and lubrication-free operation of parts of machines and equipment whose function is determined by relative movements in a straight line between components. The special dry-tech® high-performance plastics of the bearing bushings ensure that machine elements can be moved along a shaft or profile guide silently and with little friction. Compared to linear solutions with rolling elements, the acquisition costs are up to 40% lower and there are no additional operating costs.
In linear ball bearings, one or several rows of balls support the shaft. To work properly, they need a ball recirculation system that guides the balls back in the direction opposite to the shaft's direction of movement. The ball recirculation system and the high level of stress on the balls due to the load being applied to a small point on each ball are factors that result in potential weak spots and noise. Ball recirculation systems can be replaced with igus® linear bearings of the drylin® series in nearly all areas of use. Due to their simple structure, the drylin® linear plain bearings have very little susceptibility to failure. Lubrication-free operation means that the machine parts remain free of dirt, dust and moisture. Another benefit is the very quiet operation of the drylin® linear bearings.
Up to 40% more cost-effective than recirculating ball bearing guides
100% maintenance and lubrication-free
Corrosion-resistant and hygienic
Wear-resistant
Resistant to dirt, dust and humidity
Extremely quiet operation
No minimum order value, no minimum order quantity
Shipping in 24 - 48 hours
Service life can be calculated online
Due to the use of sliding elements made of high performance polymers, drylin® linear technology is especially wear-resistant and durable - even when subjected to high mechanical loads.
Precision is one thing, robust linear guidance another With robust drylin® linear drives, NOVASPORT (see above on right) creates an edger for extreme conditions without any loss of the precision that is required.
drylin® linear bearing systems are robust under many conditions of use: they withstand dirt, humidity and liquids, high and low temperatures, severe vibrations, and hard shocks and knocks.
In contrast to recirculating ball bearing guides, drylin® linear technology uses sliding elements made of high performance polymers that prevent dirt and dust from adhering.
The mobile sawmill of Serra Maschinenbau GmbH has to work perfectly, be easy to operate and be easy to look after and maintain whatever the weather. drylin® linear technology is dirt-resistant.
drylin® can even be used in places where sand, chips and dust are to be found, the reason being that, similarly to the way in which a snow plough functions, foreign bodies are simply forced out of the way due to the contact surface between the plastic sliding element and the guide.
The materials used for the drylin® linear guides are highly resistant to various media and have been tested for use underwater.
In the food and beverages industry in particular, special hygiene requirements have to be met. Machines and components must be corrosion-free as in the case of this labelling machine.
The combination of highly alloyed stainless steel (e.g. 1.4571) with a high performance polymer (e.g. iglidur® X) can be described as resistant, even when it comes into contact with seawater.
Conventional recirculating ball bearing guides mainly consist of metal, whereas light, high performance polymers are used for drylin® linear technology.
A drylin® guide made of carbon fibre was used for a drone – The guide has the necessary stability while being robust and extremely light.
drylin® linear bearing systems are designed for low-height installation dimensions and low weight. The use of sliding elements made of plastic guarantees low mass for easy handling.
Thanks to their sliding elements, drylin® products made of high performance polymers have a noise output of 20 dB on average and are therefore around 4 times quieter than corresponding linear bearings made of metal.
A high rate of acceleration during printing and fast linear movements generate severe vibrations. The requirements for the 3D printing system of Kühling&Kühling, whereby low-noise, noise-dampening linear technology had to be installed, were fulfilled completely with drylin®.
drylin® linear bearing systems slide on plastic instead of rolling on steel balls. As a result, significantly less noise and vibration is generated.
Due to lubrication-free sliding elements and a linear bearing liner made of high performance polymers, drylin® linear technology is especially clean and hygienic.
A clean linear guide that meets the extreme hygiene requirements in the pharmaceutical, bio, chemical and medical industries is essential for pipetting devices that are used by the University of Ljubljana, which also requires a high level of precision for such devices.
All drylin® linear bearing systems operate without any external lubrication such as oil or grease and are therefore extremely clean. In cleanrooms, splashed grease and oil mist can be ruled out completely.
Properties | Characteristics of igus® plain bearings | Characteristics of rolling bearings | Technical data of igus® plain bearings | Technical data of rolling bearings | Especially relevant for the following industries: |
|---|---|---|---|---|---|
| Accuracy | + | +++ | 0.02 - 0.15 mm | 0.001 - 0.01 mm | Machine tools, CNC processing, electronics manufacturing |
| Completely lubrication-free | +++ | + | Medicine, packaging, food, cleanroom, consumer goods | ||
| Maintenance-free | +++ | + | For many different branches of industry | ||
| Weight advantage | +++ | + | Aluminium approx. 2.7 g/cm³ Polymer approx. 1.5 g/cm³ | Steel approx. 7.8 g/cm³ | Handling, automation, laboratory, leisure time |
| Highly dynamic responsiveness in the case of low loads | +++ | + | Packaging, handling, automation | ||
| Highly dynamic responsiveness in the case of high loads | + | +++ | Packaging, handling, automation | ||
| Stroke length variance | +++ | ++ | Camera technology, textile | ||
| Coefficient of friction | + | +++ | 0,15 - 0,3 µ | 0,001 - 0,05 µ | Manual adjustment, pivoting |
| Sensitivity to dirt | +++ | + | Packaging, stone, textile, paper, painting equipment | ||
| Noise dampening ¹ | +++ | ++ | 45-60 dB | 60-70 dB | Medicine, laboratory, furniture |
| Cost advantage | +++ | ++ | For many different branches of industry | ||
| Protection against corrosion | ++ | + | Filling systems, chemicals, food | ||
| Magnetism | + | +++ | Plastic, aluminium | Steel | Medicine, testing instruments |
| Chemical resistance | +++ | + | 1.4751 + iglidur® X | 1.4112 | Medicine, food, electroplating, filling systems |
| Compatibility of the modules | +++ | + | Jig construction, assembly line automation | ||
| Quiet operation without any vibration | +++ | ++ | Camera technology, inspection, medicine, 3D printer | ||
| Short-stroke suitability | +++ | + | Textile, handling | ||
| Easy assembly and quick replacement | +++ | + | Jig construction, assembly line automation | ||
| Rigidity | + | +++ | Machine tools, CNC processing, electronics manufacturing | ||
| Long travels of more than 10 m | ++ | + | Camera, material handling, logistics | ||
| Temperature resistance | +++ | + | up to +250 °C | Chemicals | |
| Smooth running | + | +++ | Manual adjustment | ||
| Maximum acceleration ² | +++ | ++ | 50 m/s² | 15 m/s² | Automation, handling |
| Maximum speed ² | +++ | + | 30 m/s | 5 - 10 m/s | Automation, handling |
Easily check your application, calculate the expected service life and thus determine the replacement potential.
Still unsure whether a drylin® linear bearing is the right solution for your application? Order our free sample box now.
Would you like an alternative to your existing solution? Would you like to arrange a visit by us to your premises to discuss your particular application? Try us out, we look forward to your enquiry.
More than 500 tests per year in our 250 m² test laboratory show that lubrication-free drylin® linear solutions can replace metal recirculating ball bearing systems in many applications.
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