china export quality industry conveyor roller

                         china export quality industry conveyor roller      Choose Us Four Reasons        

Technical	Quality Warranty	Price	Sample Free
1.Solve Technical  Difficulties (CEM-E , F) 2.Make Design As Per  Working Conditions 3.Offer CAD drawings	If Any Quality  Problem Exchange  New One For Free Within 2 Years	Same Quality Lowest Price Same Price Best Quality	Test Sample  Firstly And  Then Place  Order

  Conveyor Roller Character:  

Roller Type	Carrying,Impact,Return,Friction,Tapered,Guide,Spiral,Comb and so on
Material	Carbon steel, stainless steel,nylon,plastic,ceramic,hdpe, uhmw-pe
Usage	Used in coal,mine,steel,cement,harbor,crusher heavy industry
Roller Feature	Low vibration, low noise Reduced power consumption (to start and run the conveyor) Min 30,000 hours standard life time
standard set of tests	Load capacity tests Wear tests Sealing against dust and water tests Start and run resistance tests

  Roller Components:   1. Roller Shell (Steel Tube)     We will use tube speciall for roller,compared with ordinary steel tube, in the following aspects, it has great advantages which can make the roller have minimum radial play eccentricity  

Items	Ordinary steel tube	Tube specially for roller
Outside diameter tolerance	± 0.8mm	± 0.3mm
Wall thickness tolerance	± 0.38mm	± 0.1mm
Bending degree	≤ 1.5mm/m	≤ 0.5mm/m
Ovality	≤ 0.6	≤ 0.15
Height of inner bur	+0.5~ -0.2	0

    Comparasion with other supplier's steel tube (the left one is ours)       2. Shaft     We use high precision cold-drawn steel which has high brightness and little tolerance      3.Bearing     1.We use deep groove ball bearing with big clearance, it’s C3,C4. And this clearance can make rollers revolve flexibly.  2. Bearing type is 2RZ and 2RS with oil seal which have advantage in dust proof.  3. Material: Bearing Steel 4.Specification: 6204/6205/6206/6305/6306/6307/6308/6309/6310   Comparasion between our bearing with other suppliers'   Bearing Housing and Seals    1. Type: DTII, TD75, TK contact and labyrinth seals, TK labyrinth, TKII  2. Bearing Housing material: 08 F with high tensile strength,high hardness,good toughness and easy to be welded and punched not easy to crack  3. For seals, the material we can provide has ABS resin, Nylon, Hdpe, Polyurethane, polyformaldehyde and so on And it has great advantage in dust proof, water proof which can be used in harsh working conditions     Comparasion between our bearing with other suppliers'           We will make play radial eccentricity test for rollers before delivering out from our company.We can assure play radial eccentricity less than 0.5, if have special requirements, it can reach 0.2~0.3       Our Promise: Within two years, if there's any quality problems, we can exchange new one for free and we will pay all the freight charge.