Wire rope drum bearing calculation of hoisting device (Indoor EOC)

* Hoisting speed : V =     m/min

* Rated load : R =      ton

* Hook(attachment) weight : A =     ton

* Wire drum & wire rope weight : Dw =     ton

* No. of wire rope fall : N =     fall

* Wire rope reeving efficiency : Er =

* Wire drum groove PCD : PCD =      cm

* Wire drum overall length : DL =      cm

* Wire drum groove length(bearing side) : DL1 =     cm

* Wire drum groove length(reducer side) : DL2 =     cm

* Wire drum no groove length(center) : DL3 =      cm

* Used bearing no. : #

* Basic dynamic load rating : C =       ton (Refer to maker catalogue)

* Required bearing rating life : Lr =       Hr (Refer to spec.)

* Rotation factor : ϒ=

* Rated load factor : ψ =

 

* Wire rope force due to rated load & hook(attachment) weight

 

* Bearing force(reaction force) due to rated load & hook(attachment) weight

 

* Bearing force(reaction force) due to wire drum & wire rope weight

 

* Max. force

 

* Min. force

 

* Mean force

 

* Wire drum bearing rpm    

 

* Speed factor

 

* Life factor

 

* Rating life