we can be offered confirming to world standards as DIN 5402, IS 4217 and all equivalent international standards. We can also give rollers in G5, G3, G2 classes. G2, G3, and G5 are accuracy grades for needle rollers, which refer to the tolerances of their diameter and roundness.
G2: This is the highest accuracy grade for needle rollers, with a tolerance range of +/- 2 microns for diameter and roundness. G2 needle rollers are suitable for applications where very high precision is required, such as in the aerospace and medical industries.
G3: This is a medium accuracy grade for needle rollers, with a tolerance range of +/- 3 microns for diameter and roundness. G3 needle rollers are suitable for applications where moderate precision is required, such as in industrial machinery and automotive systems.
G5: This is a lower accuracy grade for needle rollers, with a tolerance range of +/- 5 microns for diameter and roundness. G5 needle rollers are suitable for applications where lower precision is acceptable, such as in general-purpose bearings and other industrial applications.
Tolerance grade(G2) needle rollers: diameter changes(µm) 1 the average diameter vibrationwmp(µm)0/-2,1/-3,-2/-4, -3/-5,-4/-6,-5/-7, -6/-8,-7/-9,-8/-10 circular deviation(max)1 diameter changes VDmpmax(µm) 1 Length Tolerance(mm) <0.20
Tolerance grade(G2) needle rollers: diameter changes(µm)3 the average diameter vibrationwmp(µm) 0/-3,-1.5/-4.5,-3/-6,-4.5/-7.5,-6/-9,-7/-10 circular deviation(max)1.5 diameter changes VDmpmax(µm) 1.5 Length Tolerance(µm) <0.20
Tolerance grade(G2) needle rollers: diameter changes(µm)3 the average diameter vibrationwmp(µm) 0/-5,-3/-8,-5/-10 circular deviation(max)2.5 diameter changes VDmpmax(µm) 2.5 Length Tolerance(µm) h13
yes,we can, but the price is very expensive.
tolerance grade(µm) | diameter changes(µm) | average diameter vibration Dwmp(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 | ||||
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automotive needle rollers are roller bearing with cylindrical rollers. these needle roller bearing are thin and long in relation to their diameter have specially designed low cross section. the bearings have a high load carrying capacity and are extremely suitable for bearing arrangements where radial space is less or limited.
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