Achieve the optimum axle-guide linkage profile
Introducing HALL® Hydraulic Elastomers
Good curving behaviour and stable high-speed running in axle guide bearings have traditionally been seen as mutually exclusive characteristics – if you achieve one, you compromise on the other. Now, however, there’s no longer any need to compromise, thanks to HALL® hydraulic axle guide bearings.
The ideal combination of minimum cost and maximum performance
- Frequency-dependent performance delivers low stiffness in curves and greater stiffness at high speeds
- Reduced friction conserves energy and cuts your lifecycle costs
- Easy fitting and exchange ability with conventional bearings keep your track access charges to an absolute minimum
- Immediate usability – there’s no need to modify your vehicles
- Reduction of wear on wheels and rails
- Greater protection of vehicles and platforms
HALL® – Hydraulic axle guide bearings
Nordic Railways can benefit from HALL® technology, which offers a unique solution to combine low longitudinal stiffness for curves with high longitudinal stiffness for straight line movement in a single component. HALL® utilizes integrated hydraulics that enable frequency dependent changes in the longitudinal stiffness, with a hydraulic axle guide bearing that automatically provides low stiffness during steady adjusting movements when entering or exiting a curve.
Furthermore, the bearing stiffness increases during dynamic excitation at higher speeds. The best part is that HALL® can be easily integrated into both new and existing vehicles without any structural modifications to the bogie, as it fits into the existing space for conventional axle guide bearings.
What could you save with HALL®?
Try our online calculator to discover how much you could save by adding HALL® to your rail vehicles. Once you’ve tried the online version, get in touch with us for an even more detailed picture of your savings, taking into account:
- The number of years between changing parts
- Class of train
- Fuel type
- Wear on bearings
- Reprofiling wheels
These initial results are based on simulations using a fixed and varied route (varied meaning some turns and some straights), using an approved 185hb/m train.
To calculate your savings, simply select the appropriate information below.
Engineered to perform
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Reducing wear, cutting costs
Infrastructure maintenance costs represent a significant part of the overall cost of railway operations. Increasing axle loads, higher speeds and the greater axle control stiffness required have seen this cost spiral further in recent years.
Recent intensive studies in the UK and Sweden on the relationship between vehicle properties and the wear of wheel and rail were conducted, leading to new fee models for the track access. These models reward flexible axle control with lower fees.
Measurements in the vehicles secured with HALL® show a significant regression of wear and rolling contact fatigue (RCF) in wheels and rails.
1.1 million miles without losing performance
In a recent customer test, HALL® hydraulic axle guide bearings were shown to continue delivering the optimum combination of outstanding curving behavior and stable high-speed running, even after 1.1 million miles.
