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Railway Hydraulic Vibration Damper for Bogie Train

Railway Hydraulic Vibration Damper for Bogie Train

Product No.：202672317933
Price：nogotiation
Material：high-quality carbon steel
Standard：GB
mould charge：yes
Production time：75
weight：30
Package：Wooden Box
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1. Overview

The railway hydraulic vibration damper (also referred to as oil pressure damper or shock absorber) is a critical suspension component installed on railway bogies to control and limit the vertical and lateral oscillations of the car body and bogie frame. By dissipating kinetic energy through fluid flow resistance, hydraulic dampers improve ride quality, enhance dynamic stability, reduce wheel-rail wear, and extend the service life of rolling stock components.

This technical specification covers hydraulic dampers used in primary and secondary suspension systems of railway bogies, including vertical dampers, lateral dampers, yaw dampers, and anti-roll dampers.

2. Applicable Standards

Hydraulic dampers for railway applications shall be designed, manufactured, and tested in compliance with the following standards:

Standard	Title	Scope
EN 13802:2013	Railway applications – Suspension components – Hydraulic dampers	European standard covering hydraulic dampers (including end mountings) used on rail vehicles
TB/T 1491-2015	Technical specification for oil damper of locomotive and rolling stock	Chinese railway industry standard for oil dampers used on locomotives and rolling stock
EN 14363	Railway applications – Testing and Simulation for the acceptance of running characteristics of railway vehicles	Running behaviour and stationary tests
EN 61373	Railway applications – Rolling stock equipment – Shock and vibration tests	Environmental test requirements for railway equipment
AAR M-921	AAR Manual of Standards and Recommended Practices	Dynamic impact tests for hydraulic units (North American standard)

All dampers shall be designed and produced according to the European standard EN 13802, applying to hydraulic dampers and their attachments used on rail vehicles.

3. Classification

Railway hydraulic dampers for bogie applications are classified by function and mounting location:

3.1 By Application Position

Type	Function	Mounting Location
Primary Vertical Damper	Controls vertical movement between axle box and bogie frame (nodding vibration)	Between axle box and bogie frame
Secondary Vertical Damper	Controls vertical oscillation of car body relative to bogie	Between bogie frame and car body
Secondary Lateral Damper	Controls lateral oscillation of car body	Between bogie frame and car body (lateral direction)
Yaw / Anti-roll Damper	Controls yaw motion and hunting stability of the bogie	Diagonally between bogie frame and car body
Displacement Sensitive Damper	Variable damping characteristics based on displacement amplitude	Custom application

3.2 By Size Series

Dampers are typically classified into size series based on maximum dynamic force capacity:

Series	Max. Dynamic Force	Typical Applications
Type 45	12 kN	Light rail, metro – primary, vertical and lateral damping
Type 62	30 kN	Primary and secondary damping, yaw and inter-car damping
Type 80	55 kN	Yaw and inter-car damping

4. Technical Requirements

4.1 Operating Environment

Parameter	Requirement
Temperature Range (Standard)	-40°C to +70°C (according to EN 13802)
Temperature Range (Arctic Option)	-50°C (with special cold-weather measures)
Relative Humidity	Up to 100% (including condensation and ice formation)
Protection Class	IP66 minimum (dust-tight and protected against powerful water jets)

4.2 Damping Performance

Parameter	Specification
Damping Coefficient (C)	Customizable per application requirements
Maximum Damping Force	5 kN to 55 kN (depending on series and configuration)
Blow-off Feature	Available (pressure relief valve for overload protection)
Force Symmetry	Symmetrical force characteristic (equal damping in tension and compression)
Force-Displacement Characteristic	Shall meet specified force-velocity curve per customer requirement

4.3 Stroke and Dimensions

Parameter	Specification
Stroke Length	Customizable per application
Damper Housing Diameter	70 mm (Type 45), 89 mm (Type 62), 108 mm (Type 80)
Reservoir Diameter	45 mm (Type 45), 62 mm (Type 62), 80 mm (Type 80)
Dust Cover Diameter	80 mm (Type 45), 95/102 mm (Type 62), 120 mm (Type 80)
Maximum Damper Length	Customizable per application

4.4 Mounting and Attachment

Parameter	Specification
Attachment Types	Trunnion bush, cylindrical bush, stem and bush, ball joint, pin end
Mounting Angle	Min 45° to Max 90° to horizontal (for bogie dampers)
End Mounting Design	Based on double vulcanization technology

5. Materials and Construction

5.1 Key Components

Component	Material / Specification
Piston Rod	Superfine polished, hard-chromed and induction-hardened for maximum durability
Damper Housing	High-strength steel tube, precision machined
Reservoir Tube	Seamless steel tube
Dust Cover	Completely welded around (Type 45) or screw mounted (Type 62, Type 80)
Piston Assembly	Precision-machined with wear-resistant sealing elements
Oil Seal	High-temperature resistant synthetic rubber
Hydraulic Fluid	High viscosity index oil with anti-wear and anti-foam additives, suitable for -40°C to +70°C operation

Type	Secondary Vertical Oil damper of Suspension System
Standard	TB/T1491 EN13802-2015
Certificate	ISO 9001,CRCC, IRIS, EN15085-2
Production ability	10000 per month
Material	steel and rubber
Working temperature	-40℃-+70℃
Unsymmetry	≤10%
Size	Customized
Design lifetime	10 years or 2.4*106, which comes first
Guarantee	12 months

Connecting Method

Advantage

 * CRCC approved

* Meet TB/T1491-2015 and EN13802-2015

* Applied to train speed max to 160km/h

* More than 100 various size model and can be customized either

* be able to withstand attack of sand, rain, snow, strong sunlight, corrosive air, salt atmosphere and ozone

Processing