A CASNUB 22HS bogie side frame weighs approximately 850–900 kg. It is a single continuous alloy steel casting — not welded, not bolted — that connects two wheel axles, transfers […]
What Is the LWLH 25 Bogie? India’s 25-Tonne Axle Load Standard Fully Explained
When Indian Railways designed the infrastructure for the Dedicated Freight Corridors, it made a deliberate engineering choice: the new corridors would be built to carry 25-tonne axle loads at 100 […]
How Indian Railways Wagon Builders Choose Their Bogie Supplier — And What It Means for Foundries
India’s private freight wagon sector is one of the fastest-expanding manufacturing segments in the country. Wagon builders — from large integrated players like Titagarh and Jupiter Wagons to smaller RDSO-registered […]
Alloy Steel Casting vs Carbon Steel Casting — Why Indian Railways Specifies Alloy Steel for Bogies
When RDSO writes a material specification for a CASNUB bogie side frame or bolster, it does not say “steel casting.” It says alloy steel casting — with specific minimum requirements […]
CBC Coupler Body Casting — What It Is and Why Indian Railways Is Expanding Its Use
Before the Centre Buffer Coupler became standard on Indian Railways freight wagons, two wagon handlers had to physically step between moving wagons to manually connect a link and pin. This […]
What Is the RFT Bogie? India’s Roller Bearing Freight Truck Explained
Most railway procurement conversations in India revolve around three names — CASNUB 22HS, CASNUB 22NLB, and LWLH 25. These are the three-piece cast steel bogies that carry the vast majority […]
No-Bake Sand Casting for Railway Bogies — Why Dimensional Accuracy Determines Quality
Most foundries can produce a casting that looks like a bogie. Fewer can produce a bogie casting that holds the tolerances that the RDSO drawing requires — dimension after dimension, […]
The Dedicated Freight Corridor’s Bogie Problem — Why 25T Axle Load Changes Everything for Suppliers
India’s Dedicated Freight Corridors are not just a faster route for freight trains. They represent a fundamental change in the engineering specification for every freight wagon and bogie in India’s […]
The Strut and End Piece Casting — Why This Unsung CASNUB Component Matters for Bogie Integrity
A freight bogie has one glamorous job — it carries the load. But it has dozens of unglamorous jobs — and one of them is keeping the brake gear attached […]
7 Questions to Ask Before Buying Railway Bogie Castings From Any Indian Foundry
India has dozens of foundries that claim to produce RDSO-grade alloy steel castings for railway bogies. The RDSO vendor list is long. IndiaMART listings are even longer. The problem is […]