RAILWAY BEARING:
VIZDER is a leading provider of innovative solutions and services for the rail transportation industry. With over long years of experience, we are committed to providing our customers with the highest quality products and services that meet their needs. Our comprehensive range of products includes bearings, wheelsets, axles, couplings and other components designed specifically for use in railway applications.
Our commitment to innovation has enabled us to develop cutting-edge technology such as condition monitoring systems which allow railways operators to monitor bearing performance in real time. At VIZDER we strive towards delivering superior value through reliable service while maintaining cost effectiveness at all times – enabling you achieve maximum efficiency from your fleet operations without any compromise on quality standards.
Discover our expert answers to each of your projects, and within deadlines!
Innovation: Helping your profitability. Incorporating the latest technological advances, our bearings provide the best performance and reliability. The solutions implemented by They are intended to reduce the total cost of ownership (TCO) and the life cycle cost (LCC) for your application.
Choice: A global offer covering all types of train. We have a solution for each of your railway applications (bogies, axles, transmission and traction engines) regardless of the type of train (high-speed, regional, InterCity, trams, metro and freighter). Our products are suitable for global use meeting the standards of every country.
Sustainability: Long-term support. Our teams will support you step-by-step on each of your projects. We have the necessary structure to conclude projects in a timely fashion.
Reliable rail around the world
Improve fleet efficiency and reliability with innovative railway solutions and services from railway brands. Discover how new railway condition monitoring technology and condition-based maintenance can help you extend maintenance intervals. Our railway specific products and services help you obtain lower life cycle costs by letting you use bearings to their full potential.
Comprehensive commercial and technical services
VIZDER LTD. provides a wide range of commercial and technical services, such as:
- Technical application advice
- Design consultations
- Calculations
- Tests
- Logistic services (e.g. just-in-time delivery) to meet your demands.
Bearings used in railways include:
Tapered roller bearings
Four-point joints Contact bearings
Cylindrical roller bearings
Deep groove ball bearings
Spherical roller bearings
Roller bearings use rolling elements (balls or cylinders) to support the load, reducing friction and allowing smooth operation. Plain bearings rely on a sliding contact between the bearing surface and the journal (the rotating shaft). Magnetic bearings use magnetic fields to support the load, eliminating friction altogether.
R
Axle bearings: tapered roller bearings, tapered roller bearing cartridge, cylindrical roller bearings, spherical roller bearings
- increased life
- low maintenance
- anti-fretting solutions
- optimized cage design
- labyrinth or contact seals
Transmission bearings: tapered roller bearings, cylindrical roller bearings, ball-bearings
- optimized cage design
- increased capacity
- Traction engine bearings: cylindrical roller bearings, ball-bearings
- optimized cage design
- insulated bearings (ceramic or polymer coatings)
Traction motor bearings
Traction motor bearings must demonstrate long service life. The most frequently used bearing types are:
Cylindrical roller bearings: Single row cylindrical roller bearings offer unlimited possibilities for your applications. Currently more than 3,000 types of this series are produced in Steyr using a new modular component assembly system. This ensures shortest lead-times for your orders.
- Single-row (design variants N, NJ, NU and NUP) and double-row (design variants NN and NNU) available
- Cage variants: brass (M6, MA6, MPA) and polyamide (TVP3)
- Suitable for high radial loads
- High speed ratings
- Simple mounting due to the possibility to fit inner and outer rings separately
- Full complement versions available for even higher radial loads
- Standards: DIN 616, DIN 5412 (part 1)
Deep groove ball bearings are the simplest yet the most popular bearing:
- Suitable for very high rotating speeds
- Well suited for medium high radial and axial loads in one or both directions
- Various seals and grease variants available for different operating conditions
- Numerous clearance and tolerance classes available for different operating conditions
- Standard: DIN 625
- Series: 600, 6000, 6200, 6300, 6400, 1600;
Thin-ring: 61800, 61900
POP range of single row deep groove ball bearings covers the most frequently used types and sizes. The range features the following technical advantages:
- Newly developed seals (double-lip labyrinth RS2): Improved protection against contamination with low friction, better grease retention
- New, special low-noise lubricant: Lower starting torque over a wide range of temperatures
- Superior surface finish on raceways: Reduced friction, lower operating temperature
- Closer grade balls: More uniform running and lower noise
- Reduced running noise: Through 100% noise testing with stringent limit values
Electrically Insulated Bearings:
electrically insulated rolling bearings reliably prevent current discharge.
It provides bearings with oxide ceramic insulating layers on the bearing ring. Applied with plasma technology, the insulation has a guaranteed breakdown resistance of at least 1000V AC or DC. Two variants are available:
- SQ77: Insulation on the outer ring
- SQ77E: Insulation on the inner ring
SQ77(insulated outer ring)
- Cylindrical roller bearings
- Design variants: NJ, NU, NUP
- Dimension series: 210-230, 310-330
- Cages: brass and polyamide
- Radial clearance groups: C0, C3, C4
- Deep groove ball bearings
- Dimension series: 6212-6226; 6312-6326
- Cages: brass
- Radial clearance groups: C3, C4
- Other types and SQ77E (insulated inner ring) upon request
Advantages
- Higher operational reliability through optimum protection against electrical corrosion
- More economic than, for example, insulation on housings or shafts
- Interchangeable: Same key dimensions and technical properties as conventional bearings
- Coating resistant to damage if correctly handled
