YDTech® manufacturer of cylindrical rollers,supplier of columnar rollers for pin bearing parts as rolling element units in china.
What's cylindrical roller?
the cylindrical rollers are precision parts for needle bearing, Steel cylindrical rollers are remarkable for their high mechanical strength and long lasting functional life. cylindrical rollers had multiple uses in a variety of industries including automotive, truck, farm and construction equipment, two-cycle engines, outboard engines and consumer durables.
These rollers are in high precision, and widely used in the areas of airplane, express train, robot, NC machinery, ship, engineering machinery, and bearing.
Precision Cylindrical Roller Bearings
the precision cylindrical roller bearings for screw drives feature a combination of axial cylindrical rollers and radial needle rollers. This unique configuration helps manage loads from multiple directions during highspeed operation. Several designs are available to accommodate varying screw drive designs.
the ground ends needle rollers are mainly used as bearing rolling elements to transmit torque and reduce friction. They can also serve as precision shafts or as precision locating pins
technical parameters of cylindrical rollers
| 1 | material | GCR15, SUJ2, AISI52100, SUS440C, S420J2, 100Cr6 etc | ||||||||
| 2 | hardness | HRC60-65 | ||||||||
| 3 | OD tolerance | +0/-0.002mm, +0/-0.003mm, +0/-0.005mm(0.001 classification) | ||||||||
| 4 | length tolerance | +0/-0.03mm, +0/-0.05mm | ||||||||
| 5 | chamfer(radius) | R0.03mm-R0.3mm(according to different diameter change) | ||||||||
| 6 | parallelism | 0.02mm | ||||||||
| 7 | perpendicularity | 0.02 mm | ||||||||
| 8 | circularity | 0.001mm | ||||||||
| 9 | roughness | RA0.04um--RA0.1um | ||||||||
| total | 9 precision cylindrical rollers, needle dowel pins | |||||||||
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manufacturer and supply of cylindrical rollers
As a professional cylindrical rollers, needle rollers, tapered rollers manufacturer, exporter, supplier and factory in China.--NCTECH® We focus stable high quality and professional service as well as reasonable price.
Supported by our very strong & professional engineering team and good equipped quality research center, we are the right company to supply our customers with very stable high quality products, cylindrical roller, needle rollers, tapered rollers and professional service.
tolerance of precision cylindrical rollers
| tolerance grade(µm) | diameter changes(µm) | average diameter vibrationwmp(µm) | circular deviation(max) | diameter changes VDmpmax(µm) | length tolerance(µm) | |||||
| G2 | 2 | 0/-2,1/-3,-2/-4,-3/-5, -4/-6,-5/-7, -6/-8,-7/-9,-8/-10 | 1 | 1 | <0.20 | |||||
| G3 | 3 | 0/-3,-1.5/-4.5, -3/-6,-4.5/-7.5, -6/-9,-7/-10 | 1.5 | 1.5 | <0.20 | |||||
| G5 | 5 | 0/-5,-3/-8 ,-5/-10 | 2.5 | 2.5 | h13 | |||||
| total | 3 precision cylindrical rollers and needle rollers | |||||||||
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we strictly use top quality raw material in the entire manufacturing process. We have abundant experience in dealing with different types of precision dowel pins, spring dowel pins, dowell pins, steel dowel pins etc. We bring all kinds of precision dowel pins, spring dowel pins, dowell pins, steel dowel pins etc.
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