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Mon Dec 5, 2016 18:06:22 ISTHomeTrainsΣChainsAtlasPNRForumGalleryNewsFAQTripsLoginFeedback
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Exploring the Concept of CASNUB BOGIE used in Indian Railways  
1 Answers
Aug 31 2015 (11:22AM)
Coach Construction/Seating Arrangements

Entry# 1880     
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Exploring the Concept of CASNUB BOGIE used in Indian Railways

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Aug 30 2015 (11:19PM)
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******** Exploring the Concept of "CASNUB BOGIE" used in Indian Railways *********
A Definition in Brief :
CASNUB Bogie is used in Freight stock . In earlier version of CASNUB bogie high wear has been reported. First used in BOXN wagon. The various bogie version are as follows:
CASNUB
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more...
– 22W,
CASNUB – 22W (retrofitted),
CASNUB – 22W (M),
CASNUB – 22 NL,
CASNUB – 22NLB,
CASNUB – 22(High speed).
CASNUB bogie are used in the following wagons:
BOXN, BCN, BCNA, BRN, BTPN, BTPNGLN, BOBR, BOBRN, BOBY, BOBYN, BFK.
B Construction details of CASNUB bogie:
CASNUB bogie consists of two cast iron frames, floating bolster, mild steel spring plank, nested springs, and friction snubbers. Bolster is supported on the side frames through two nested of springs. Two cast iron steel frames are connected by spring planks. Frictional snubber acts as a frictional damper, which dampens the oscillations. Frictional snubbers provide damping action proportional to load.
C Suspension system in CASNUB Bogie:
CASNUB bogie suspension system is two tier suspension system. The bogie suspension is at the bolster level only. If consists of two cast steel side frames, connected by riveted mild steel spring planks. Suspension system is secondary suspension system. Load transfer from bolster to side frames through spring in secondary system and then to axels (wheel set) through axle bearings, elastomer pads and adopter. In secondary suspension system consists of nested helical springs, friction snubbers and bolster. As there is no primary suspension system, the spring plank is subjected to bending and torsion during the wheels trying to adjust, for negotiating track twist. The steel-floating bolster is supported on the side frame through two nests of springs which contains friction snubbers to control oscillations. Friction snubbers are not designed for vertical loading.
For more details of CASNUB BOGIE please refer : click here
Attached Images:
Casnub Bogie
Link: click here
Bogie General Arrangement Casnub 22W Bogie
Link : click here
Suspension 1
Link: click here
Suspension 2
Link: click here
It is also to be noted that "BOLSTER" and "SIDE FRAME" of Casnub Bogie and Casnub Bogie for BOXNHL Wagons are preapred by CLW in it's STORES. Please see 1st, 5th and 6th ITEM under "CAST Items" Category in the Page whose Link is shared below:
click here
WAG-9 31082
Link: click here
Main Page Link: click here
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