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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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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. It is a double Y-shaped member fabricated using steel tubes and sheets. The reason was the axle box wing cracks. Provide a conical arrangement above the rim of the lower spring seat up to half the height of the dashpot cover.

After the rear cover, a retaining ring is placed. Hence, the lower spring beam also become a floating member hinged to the bogie frame with the help of hangers on the top and the bottom. The collar ensures that the bearing does not move towards the center of the axle. However in the new design of Axle box guide, the guide cap is welded with the guide assembly and hence the need of a guide cap has been eliminated.

The bolster spring sits on the rubber washer. However, it was indicated lcf these liners are to be provided only on new coaches and in coaches in which new wheels are fitted. It is trapezoidal in shape with small steel tubes on each end. Unsourced material may be challenged and removed.

The lower spring seat plays the role of a cylinder in the dashpot arrangement and is filled with oil. Please help improve this article by adding citations to reliable sources.


A center pivot pin is bolted to the body bolster. The complete guide and lower spring arrangement is covered with a dashpot cover also known as protective tube.

The sealing ring ensures that the grease in the axle box housing does not seep out during the running of the wheels. These wheels and axles are machined bgie the various railway workshops in the wheels shops and pressed together. Moreover, the provision of the liners below the Hytrel washers will not stop the damage to the lower spring seat and the protective icc. A polymer packing ring and a guide ring is attached with the Acetal guide bush.

The dashpot arrangement is mainly a cylinder piston arrangement used on the primary suspension of Indian Railway coaches of ICF design. The retaining ring is made of steel and is a press fit. They are 13 ton bogie frame and 16 ton bogie frame.

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. A homopolymer acetyle washer is placed on the lower end of the axle box guide.

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. It involves 40 meters app. The coaches come to the workshop once in a year.

The wheel diameter tread reduces due to brake application as the brake blocks rub against the wheel tread.

ICF coaches – Wikipedia

The downward movement of the Axle box guide puts pressure on the oil in the lower spring seat. 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. It allows for rotation of the bogie when the coach is moving on the curves. A rubber washer is placed at the grooved section.


Articles needing additional references from November All articles needing additional references Use dmy dates from March Official website not in Wikidata. The roller bearing is pressed after vogie retraining ring. Earlier,wooden washers were used. Hence on examination of the failed axle boxes, it was noticed that the Hytrel washers were forming a deep groove of 4 to 8mm on the seating area of the axle box spring seating.

As described above, the rubber washers sit directly on the axle box spring sitting area. Main sub-assemblies of bogie frame viz. A silent block, which is cylindrical metal rubber bonded structure, is placed cif the central hole of the bogiee bolster through which the center pivot pin passes.

Another parameters was the load deflection characteristics of the washers. The anchor link is a tubular structure with cylindrical housing on both the ends.

ICF coaches

These levers are used to connect the brake beam with the piston of the brake cylinder. Moreover, the load deflection characteristic of the washers were also not found to be in line bogei the desired specification. On the top of spring seat, a polymer ring called NFTC ring sits.

This also reduces the overall weight of the ICF coach apart from the advantage of quick brake application. By using this site, you agree to the Terms of Use and Privacy Policy. Change the dashpot design from the cylinder piston arrangement to hydraulic shock absorbers. The axle box guide moves in the lower spring seat filled with dashpot oil. The inner section of the lower spring beam is connected to the bogie bolster with the help of an equalizing stay rod.