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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Axle box guides traditionally had a guide cap with 9 holes of 5mm diameter each; however, in the latest design, the guide cap is made an integral part of the guide. A sealing ring is placed near the washer and performs the function of a piston ring.

Various types of brackets are welded to the frame for the purpose of primary and secondary suspension arrangement, alternator suspension arrangement and brake rigging arrangement. The typical levers being the “Z” lever, floating lever and the connecting lever.

The bolster springs are supported on a lower spring beam. Moreover, the load deflection characteristic of the washers were also not found to be in line with the desired specification. The material of the brake block is non-asbestos and non-metallic in nature. Articles needing additional references from November All articles needing additional references Use dmy dates from March Official website not in Wikidata. The axle box guide works as a piston in the Lower spring seat filled with oil.

The frame of the ICF coach is a fabricated structure made up of mild steel. Since, only part quantity of oil is able to move up in the hollow portion of the axle box guide, the balance displaced oil moves up. The center pivot pin runs down vertically through the center of the bogie bolster through the center pivot.


A rubber or a Hytrel washer is placed below the lower spring seat for cushioning effect. ICF coaches use two types of brake beams. The foremost being that, since the brake cylinder is mounted on the bogie frame itself and is nearer to the brake beam, the brake application time is reduced.

The brake beam is made from steel pipes and welded at the ends. 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.

This arrangement provides the dampening effect during the running of the coach.


Integral Coach FactoryIfcChennai. The retaining ring ensures that the rear cover assembly is secured tightly between the axle collar and the retaining ring and stays at one place. The lower spring seat acts boogie a cylinder and the axle box guide acts as a piston. During examination of these coaches, it was noticed that the Hytrel washers have not only damaged the axle box housing but also the lower spring seat as well as the Protective tube.

Earlier, the collar and the bearings were heated in an oil bath. This provides the dampening of vibration in a running coach. The front cover is bolted by using bogje wrench. After the rear cover, a retaining ring is placed. It is attached to the bogie frame through the anchor link.

They washers were also increasing the diameter of the spring seating due to continuous hitting of the raised section of the sitting area. Views Read Edit View history. A BSS pin is placed in the tubular section in the end portion of the lower spring beam. On the top of spring seat, a polymer ring called NFTC ring sits.


The guide cap is fixed with the help of a steel circlip. The equalizing stay rod is also hinged on both the ends with the lower spring beam as well as the bogie bolster with the help of brackets welded to the bogie bolster.

However, instead of the BSS pin, steel brackets are welded on the lower side of the bogie frame of which the BSS hanger hangs with the help of hanger block.

Protective Tube Upper Rubber Washer.

This helps in damping the vibrations caused during running train operation. Within bogiie months of provision of Hytrel washers on all the main line coaches, the failure of Axle box housing increased.

These wheels and axles are machined in the various railway workshops in the wheels shops and pressed together. It is trapezoidal in shape with small steel tubes on each end. Another parameters was the load deflection characteristics of the obgie.

ICF coaches

The oil rushes up. Before fitting the roller bearing, an axle collar is press fitted. Modify the dust shield ring by incorporating a rubber component in it in such a manner that it also acts as botie oil seal. In order to adjust for the difference in the wheel tread, a packing is placed under the flange of the lower spring seat. The axle box guide moves in the lower spring seat filled with dashpot oil.

The anchor link is fixed to the bogie bolster and the bogie frame with the help of steel brackets welded to the bogie bolster and the bogie frame. A homopolymer acetyle washer is placed on the lower end of the axle box guide.