Slewing reducer JH08

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Introduction

JH series slewing reducer is a hardened face planetary gear reduction device designed by our company according to the advanced foreign technologies with all gears adopting grinding process.The reducer has features of compact structure, stable operation, high transmition efficiency, low noise, long service life, high reliability, etc.Such series reducer can be equipped with torque motor, variable frequency motor and corresponding electrical control system to constitute RCV series slewing mechansim and JHF series slewing mechanism.

Specification

Model:JH08

Ratio:164

Rated output torque (N.M):6000

Output gear Parameter (Customization is avaible):m=10,z=12,x=+0.32

Weight(Kg):90

Parameters of RCV series matching torque motor--Rated stalling torque of the motor (Nm):75,95

Parameters of JHF series matching variable frequency motors--Rated power of the motor kw:4.4,5.5.

Recommended Tower cranes t.m:40~125

Slewing reducer JH08

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Q: for my homework : the question was explain how a skyscraper crane uses physics moments but no where can i find out the answer and dont want a detention ekkk x: OK... So what has your homework actually asked you to explain? Can you post the question...? There are moment forces going through a crane, is the aim of the homework simply for you to explain what a moment force is using a specific example ? A crane can be thought of in simple terms as a cantilever, ie one supported end and one free end, the lever arm force as it is sometimes referred to in schools is actually the moment force i.e. the moment for a crane with a boom L=40m long lifting a load of P=10kN would beP*L = 10*40 = 400 kNm, this is ignoring the self weight of the boom, if the boom weighed W=1.5kN/m (thats per meter, not to be confused with kNm which is kilo newton meters) then the moment generated by the self weight would be (WL^2)/2 = (1.5*40^2)/2 = 1200kNm so the total moment would be 1600kNm, so just remember for a point load the moment is force * distance from support ( in cantilevers) hope this helps... :)

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Q: Is there a world record for making paper cranes?: Yes! To commemorate the fiftieth anniversary of the dropping of the atom bomb on Hiroshima, two hundred thousand folded paper cranes were completed by December 15th 1995. Each crane had someone's name and peace message written on it. The intention is to preserve them to hand on to the 21st century. The event was sponsored by the Hiroshima International Cultural Foundation. There are other cool facts at the website below like the world's largest paper crane, most cranes in one hour, etc.