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Light weight and Superior Noise Damping Railway Wheel for Metro

Light weight and Superior Noise Damping Railway Wheel for Metro

Product No.：202394202559
Material：M201
Standard：AAR
Production time：75
weight：125
Package：Wooden Box
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Light weight and Superior Noise Damping Railway Wheel for Metro

Product Description:

What is a lightweight resilient wheel and why do metro wheels fail from noise and vibration?

A lightweight resilient wheel (also known as rubber-sprung wheel) is a composite wheel construction where a viscoelastic rubber layer is inserted between the steel tyre and the wheel centre. Its job: isolate wheel-rail noise and vibration at the source—the wheel-rail contact. When conventional solid steel wheels are used in metro service, you get excessive curve squeal (up to 30 dB higher), rolling noise, track vibration, increased wheel/rail wear, and passenger complaints.

Why choose a lightweight resilient wheel over a conventional solid wheel for metro applications?

Conventional Solid Wheel	Lightweight Resilient Wheel
High unsprung mass	Reduced unsprung mass (up to 70 kg saving per wheel)
High rolling noise	Rolling noise reduction up to 8 dB(A)
Severe curve squeal	Squeal reduction up to 30 dB(A)
Higher wheel/rail wear	Extended wheel and rail life
Higher LCC	Lower life-cycle costs

What lightweight design features reduce wheel mass?

Hollow web / optimised web geometry – Reduces material without compromising strength
Rubber segment construction – Replaces solid steel in the web area with lighter rubber elements
Optimised hub design – Reduces hub mass while maintaining torque transmission capacity
Weight savings of up to 70 kg per wheel lead to lower energy consumption in operation and allow higher vehicle load capacities

What noise and vibration reduction performance can you expect?

Noise Source	Reduction	Reference
Rolling noise	Up to 8 dB(A)	BONASILENCE® dampers
Curve squeal	Up to 30 dB(A)	BONASILENCE® dampers
Vibration (vertical)	Up to 8 dB	Reducing rubber stiffness
Vibration (P2 resonance)	Up to 2.7 dB	Increasing rubber damping
Interior noise (curves with corrugated rails)	Below required limits	In-service metro tests

Key Design Features

Rubber layer isolation – Viscoelastic rubber between tyre and wheel centre decouples vibration transmission
Patented locking mechanism – Enables quick tyre replacement without bogie disassembly (20-25 minutes per wheel)
Current bridges – Stainless steel plates and cables ensure safe grounding current conduction
100% recyclable materials – ECO-design for reduced carbon footprint
Optional BONASILENCE® noise dampers – Additional noise reduction for urban environments with sensitive buildings
Optimised installation space – Small axial envelope; suitable for inboard bearing and wheel motor drive configurations