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Linear shafts system drylin® R
drylin® R linear bearings are based on highly wear-resistant polymers developed especially for linear technology. The dimensions are compatible with standard ball bearings. The special shape of the shaft guides and bearings guarantee toughness and precision – even under extreme environmental conditions.
- 100 % lubrication-free
- Large variety of choice in housing shapes
- Shafts, shaft end blocks and accessories available from stock
- 8 different shaft materials
- Replaceable liners
- Our rails can be joined together to make unlimited lengths, unlike ball bearing systems.
drylin® R linear products
Why choose linear shafts?
One to one replacement very easy
FDA compliance with stainless steel
High precision
Tough and flexible
Quiet operation
Resistant to dirt
Application examples
| Properties | Characteristics of igus® plain bearings | Characteristics of rolling bearings | Technical data of igus® plain bearings | Technical data of rolling bearings | Particularly relevant for the following industries: |
|---|---|---|---|---|---|
| Precision | + | +++ | 0.02-0.15mm | 0.001-0.01mm | Machine tools, CNC processing, electronics manufacturing |
| Completely lubrication-free | +++ | + | Medicine, packaging, food, cleanroom, consumer goods | ||
| Maintenance-free | +++ | + | Industry-wide | ||
| Weight advantage | +++ | + | Aluminium approx. 2.7g/cm³ polymer approx. 1.5g/cm³ | Steel approx. 7.8g/cm³ | Handling, automation, laboratory, leisure time |
| High dynamics at low load | +++ | + | Packaging, handling, automation | ||
| High dynamics at high load | + | +++ | Packaging, handling, automation | ||
| Stroke length variance | +++ | ++ | Camera technology, textile | ||
| Coefficient of friction | + | +++ | 0.15 - 0.3µ | 0.001-0.05µ | Manual adjustment, swivelling |
| Sensitivity to dirt | +++ | + | Packaging, stone, textile, paper, painting systems | ||
| Noise reduction ¹ | +++ | ++ | 45-60dB | 60-70dB | Medicine, laboratory, furniture |
| Cost benefit | +++ | ++ | Industry-wide | ||
| Corrosion protection | ++ | + | Filling technology, chemicals, food | ||
| Magnetism | + | +++ | Plastic, aluminium | Steel | Medicine, test equipment |
| Chemical resistance | +++ | + | 1.4751 + iglidur® X | 1.4112 | Medicine, food, electroplating, filling systems |
| Compatibility of the assemblies | +++ | + | Jig construction, assembly line automation | ||
| Quiet operation without any vibration | +++ | ++ | Camera technology, inspection, medicine, 3D printer | ||
| Short-stroke suitability | +++ | + | Textile, handling | ||
| Easy to fit and quick replacement | +++ | + | Jig construction, assembly line automation | ||
| Stiffness | + | +++ | Machine tools, CNC processing, electronics manufacturing | ||
| Long travels over 10m | ++ | + | Camera, conveyor technology, material handling | ||
| Temperature-resistant | +++ | + | up to +250°C | Chemicals | |
| Smooth running | + | +++ | Manual adjustment | ||
| Acceleration, maximum ² | +++ | ++ | 50m/s² | 15m/s² | Automation, handling |
| Speed, maximum ² | +++ | + | 30m/s | 5-10m/s | Automation, handling |
Frequently asked questions about linear shafts
drylin® R is the "round" section of the drylin® family. The standard round hollow and solid shafts are found here, alongside a variety of housings and carriages.
drylin® R can be used in a large variety of applications, even extreme environments. You can check the suitability using the configurator tool on our website.
The drylin® R required no lubrication, comes in a huge variety of materials and sizes and are standard off the shelf products.
This depends on the application as well as the combination of linear housings or carriages that will be going with it. In addition to parameters such as load and speed of rotation, the surface quality and condition of the shafts running in the plain bearings can influence the service life of the bearing. Just as there is an almost infinite number of different plain bearing solutions, there is also a wide variety of shaft materials, some of which are often unsuitable. In fact, depending on the combination you choose, the wear patterns can differ greatly, even with the same plain bearing.
Hard Anodised Aluminium, AWM(P)
Precision (P) extruded hard anodised aluminium is perfect when trying to reduce weight and especially dissipate heat away from the bearing application. It is lightweight, has excellent wear resistance due to the hard-anodised surface, yet is durable and due to being corrosion- free, it is one of the most popular choices when looking for the best shaft/bearing combination. igus® offers hollow and solid shafts in certain diameters allowing further weight reduction if required.
CF53, SWM
CF53 is a cost-effective case-hardened ground steel shaft which is suitable for applications where high load capacity is required. It has a very low coefficient of friction against igus® polymer bearings, is tough and is available supported or partially supported.
316 Stainless Steel
The 316 stainless steel shaft has the highest corrosion resistance and yet is soft compared to X90, which means it is more forgiving when running against those more delicate specialist polymer materials. 316 is used in the highest FDA requirements and is the ‘go to’ material in the food sector. igus® also offer these as fully supported and partially supported.
X90 Stainless, EWM
This stainless-steel shaft has a high chemical and corrosion resistance, however, it is not as resistant as 316 stainless, and is for applications where strength is the main requirement. It is ideal with applications where demands are particularly high.
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