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Cylindrical roller bearings have no ribs on either the inner or outer ring, so the rings can move axially relative to each other. These can be used as free-end bearings. Cylindrical roller bearings, in which either the inner or outer rings has two ribs and the other ring has one, are capable of taking some axial load in one direction Double-row cylindrical roller bearings have high radial rigidity and are used primarily for precision machine tools.
♦ Types NU, N, NNU, and NN are suitable as free-end bearings. 
♦ Types NJ and NF can sustain limited axial loads in one direction.
♦ Types NH and NUP can be used as fixed-end bearings.
♦ NH-type cylindrical roller bearings consist of the NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars.
♦ The inner ring loose rib of an NUPtype cylindrical roller bearing should be mounted so that the marked side is on the outside.
♦ The RNU cylindrical roller bearing has an outer ring with double capped edges but does not occur with internal ring. This sort of bearing is the NU cylindrical roller bearings without the internal ring 
♦ The RN cylindrical roller bearing has an interior ring with double capped edge but does not come with outer ring. 

Packaging & Transport
one.Neutral packaging: plastic bag + kraft paper + outer carton + plywood pallets plastic tube + carton + plywood pallets
2. Commercial packing: 1pcs/plastic bag + color box + carton + plywood pallets
3. OEM your manufacturer or According to your requirement
one) Significantly less than 45 KGS, we will send out by express.DHL/TNT/FEDEX/UPS/EMS ( Door to Door, Handy )
two) Among 45 – 200 KGS, we will send by air transport. ( Quickest and most secure, but costly )
3) A lot more than two hundred KGS, we will send out by sea. ( Most affordable, but long time )
four)Special line: (the Middle East particular line /The usa special line)

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