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Durable mobility with plastic bearings

Special bikes and therapeutic accessories

Plain, spherical and linear bearings made of plastic help to improve mobility and the quality of life

Enabling handicapped people to enjoy a wide range of mobility is the ultimate aim of this manufacturer of special bicycles. The demands on the products are correspondingly high. Among other things, they must be safe, ergonomic and durable. Their appearance also plays an important role in this challenging environment. The company has long since been using light, maintenance-free plain, spherical and linear bearings made of plastic. The machine components help to ensure sophisticated designs.

Profile

  • What was needed: drylin WS-16 single rails, igubal rod ends, drylin W measuring system, iglidur G plain bearings, drylin N flat profiles
  • Requirements: The tricycle itself and all bearing components must be fail-safe, stable, maintenance and lubricant-free, resistant to moisture and temperature resistant.
  • Industry: medical equipment
  • Success for the customer: The plastic bearings' long service life, low weight and corrosion resistance and they require no maintenance or lubrication which played an important role for the special bike manufacturer, making it one of the decisive factors purchasing. The components guarantee long service life.
Tricycle igubal plastic rod ends for easy tricycle folding

Problem

Wheelchair or tricycle, partner or recumbent bike, two- or three-wheeled tandem - the Draisin GmbH bikes help make disabled people mobile. The company's goal is to offer a safe, intuitive, easy-to-use bike for every disability.
The bikes provide the necessary reliability and stability to ensure safety in road traffic. To guarantee these requirements at all times, the company relies on plastic plain bearings which require no maintenance or lubricants and have a long service life. There are three decisive reasons for this: the aforementioned reliability, environmental influences and economic efficiency. People with disabilities depend on the constant availability of their means of transport, even in extreme environmental conditions. Their vehicles must work in extreme cold or extreme heat. Then there is moisture to consider.
Easy handling is also important. Such processes as seat adjustment must be as simple as possible. There must also be no maintenance required. All assistive devices must function without impairment at all times. And the special bikes must have a service life of at least 15 years.
The plain bearings are used in a wide variety of bike parts, such as the seat adjustment, seat suspension, the pedals and vehicle-folding mechanisms.

Solution

Today, the round drylin WS-16 single rail is used in the seat adjustment mechanism. The seat can be adjusted easily to the respective body size without tools. The maintenance-free rail solution with two quick-release mechanisms replaces screws that had too much play during riding.
Quick linkage folding uses igubal plastic rod ends with such features as high fatigue strength under changing loads.
The rod ends also compensate for edge loads and misalignments. This prevents the entire system from wobbling when it is being folded out.
The transportable drylin W-measuring system has been used for over a year for base frame spatial measurement. There are plans to transfer the variable system to the suppliers as well.
The economical all-round plain bearing made of iglidur G, which is suitable for almost any application, also exhibits its multifunctionality in the bicycles. Insensitive to dirt, it proves its strength under high loads in the pedals and in the seat suspension. The PMA protective hose guides the motor cable and the front and rear hydraulic brake lines in a reliable manner.
Finally, the arm is correctly positioned and can still follow the movements of the body: smoothly gliding forwards and backwards, outwards and in front of the body. The light, flexible drylin N40 low profile guide system is used in the sliding rail.
The plastic bearings' long service life, low weight, corrosion resistance and the lack of lubrication required also played an important role for the special bike manufacturer, making these decisive factors in purchasing.


Tricycle drylin WS16 round profile guide for easy seat adjustment
Tricycle Maintenance-free mechatronics: the drylin W measuring system is used to check the frames.
Tricycle Lubrication-free drylin N miniature guide for the orthoses

More on applied products here

Further interesting applications from extremely diverse areas can be found here.

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The terms "igus", "Apiro", "chainflex", "CFRIP", "conprotect", "CTD", "drylin", "dry-tech", "dryspin", "easy chain", "e-chain", "e-chain systems", "e-ketten", "e-kettensysteme", "e-skin", "e-spool", "flizz", "ibow", "igear", "iglidur", "igubal", "kineKIT", "manus", "motion plastics", "pikchain", "plastics for longer life", "readychain", "readycable", "ReBeL", "speedigus", "triflex", "robolink", "xirodur", and "xiros" are legally protected trademarks of the igus® GmbH/ Cologne in the Federal Republic of Germany and where applicable in some foreign countries.

igus® GmbH points out that it does not sell any products of the companies Allen Bradley, B&R, Baumüller, Beckhoff, Lahr, Control Techniques, Danaher Motion, ELAU, FAGOR, FANUC, Festo, Heidenhain, Jetter, Lenze, LinMot, LTi DRiVES, Mitsibushi, NUM,Parker, Bosch Rexroth, SEW, Siemens, Stöber and all other drive manufacturers mention in this website. The products offered by igus® are those of igus® GmbH