Successful Replacement of Spring Buffer with Hydraulic Buffer

Customer Overview

Customer: Primetal Technologies (Head Office: Kolkata)

Installation Sites: JSW Mingo Transfer Car, Rourkela; VD Car Project (Export to USA)

Installation Timeline: Since November 2023

Objective

To evaluate and successfully replace the Spring Buffer (SB-1220-F) with the AdoniTech Hydraulic Buffer (EI 50-50) to enhance performance, cost-efficiency, and structural safety

Comparison of spring buffer and Adonitech hydraulic buffer replacement solution
Spring Buffer SB 1220 X F
hydraulic buffer EI 50 X 50

Key Achievements

Successful replacement of spring buffer with hydraulic buffer, conforming to IS3317:2020 Standard.

38% cost savings compared to spring buffers.

Reduced lead time with dynamic testing before installation.

Improved structural safety by eliminating rebound force.

Performance Comparison

Performance ParameterSpring Buffer (SB-1220-F)AdoniTech Hydraulic Buffer (EI-50-50)
Stroke240mm50mm
Diameter300mm65mm
Length1080mm262mm
Energy Absorption40-50% (remaining impact transferred to structure, causing damage)95-100% (ensures structural safety and longevity)
Reaction Force50% reaction force back to structure (causing rebound)No rebound
Absorption MechanismSpring-based, compression-only, with uncertain lifespanHydraulic with orifice pattern, ensuring longevity with a warranty
Installation RisksRod may get stuck, leading to operational failure and downtimeInstant return in 0.2 seconds via nitrogen gas chamber, ensuring continuous operation
RobustnessNo corrosion resistance; properties deteriorate over timeCorrosion-resistant, designed for steel industries, MHE, RM, hot metal carriages; withstands temperatures up to 70°C (customizable for higher temperatures)
Cost per Unit₹25,600₹16,000
Cost SavingsNo savings, increased risk of structural damage38% savings with a performance warranty
Structural Safety & WarrantyNo warranty or compliance with IS3317:2020, increasing risk100% compliance with IS3317:2020, ensuring structural safety & longevity

Conclusion

By replacing the Spring Buffer (SB-1220-F) with the AdoniTech Hydraulic Buffer (EI-50-50), Primetal Technologies has achieved significant cost savings, enhanced safety, improved efficiency, and increased lifespan of structures. The hydraulic buffer’s superior energy absorption and instant recovery mechanism ensure seamless operations, making it the ideal choice for industrial applications.

Hydraulic buffer installed on rail vehicle replacing traditional spring buffer