Bogie Bolster Suspension: The bolster rests on the bolster coil .. 2 nos. of lateral shock absorber are being provided in ICF Bogie to be utilized. Roll and it’s Prevention. ❑ Effect of roll on human body. ❖ Type of roll: UCR and LCR. ❑ Prevention not available in ICF bogie. ❑ Anti-Roll bar mechanism in LHB . ICF Bogie – Free download as Powerpoint Presentation .ppt), PDF File .pdf), Text File .txt) or view presentation slides online.

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The typical levers being the “Z” lever, floating lever and the connecting lever.

ICF coaches

Main sub-assemblies of bogie frame viz. ICF coaches use two types of brake beams. The bottom of the axle box guide has a guide cap with perforations so that during the downward movement of the axle guide in the lower spring seat, the oil in the dashpot rushes in the axle box guide. It provides the cushioning effect.

A woolen felt ring is placed in another groove. November Learn how and when to remove this template message. A rubber or a Hytrel washer is placed below the lower spring seat for cushioning effect. It is not bolted or welded either to the bogie frame or the bogie bolster.

Integral Coach FactoryPeramburChennai. The lower spring beam is a fabricated structure made of steel plates. The retaining ring is made of steel and is a press fit. The sub assemblies are fabricated hogie flanges, webs, channels and Ribs by welding process. The axle box guide moves in the lower spring seat filled with dashpot oil.

Earlier, the collar and the bearings were heated in an oil bath. Earlier,wooden washers were used. The reason was the axle box wing cracks.


The axle box guide, which is welded to the bogie frame has a polymer washer homopolymer acetal guide bush fixed at the head. The reason for replacement of the rubber washers with the hytrel washers was that the rubber washers were not lasting for the full Periodic overhaul cycle of the Railway Ict which was one year.

Articles needing additional references from November All articles needing additional references Use dmy dates from March Official website not in Wikidata.

The problem of spilling of oil from the dashpot is as old as the design itself. At times, imported wheels are also used. In order to ensure that the packing ring and the guide ring retain their respective place, a dashpot spring is fixed which applies continuous pressure on the piston ring. Axle box springs are placed on the lower spring seat placed on the axle box wing of the axle boie housing assembly.

The anchor link is fixed to the bogie bolster and the bogie frame with bpgie help of steel brackets welded to the bogie bolster and the bogie frame. A study was carried out on a major workshop on Indian Railways and it was found that the washers were having a hardness more than the specified limits. A center pivot pin is bolted to the body bolster.

The cylinder piston arrangement of the dashpot, i. Protective Tube Upper Rubber Washer. This arrangement provides the dampening effect during the running of the coach. The dashpot arrangement consists of a cylinder lower spring seat and the piston axle box guide.

It involves 40 meters app. Both the ends of the anchor link act as a hinge and allow movement of the bogie bolster when the coach is moving on a curved track. Its design provides that when a vertical vibration occurs during the movement of the railway coach, the axle box guide moves down.


The primary suspension in an ICF coaches is through a dashpot arrangement. This page was icv edited on 28 Decemberat Air vent screws are fitted on the dashpot for topping of oil so that the minimum oil level is maintained at 40mm. The washers also had to be replaced in the coaching maintenance depots leading to lifting and lowering of coaches.

In one of the grooves, a nitrile rubber sealing ring is placed. The wheel diameter tread reduces due to brake application as the brake blocks rub against the wheel tread. The brake head in turn receives the brake block.

Templates Category Portal WikiProject. The brake beam is made from steel pipes and welded at the ends. The frame of the ICF coach is a fabricated structure made up of mild steel.

ICF coaches – Wikipedia

The end portion of the axle box guide is covered with a guide cap, which has holes in it. They washers were also increasing the diameter of the spring seating due to continuous hitting of the raised section of the sitting area.

Before fitting the roller bearing, an axle collar is press fitted. The lower spring beam is bogi a free-floating structure. The collar ensures that the bearing does not move towards the center of the axle.