2*7.8 Roller
The 2*7.8 bearing is a NRA/NRB NEEDLE ROLLERS with an an outer diameter of 2 mm, a width of 7.8 mm. It typically uses ABEC1 ABEC3 ABEC5 ABEC7 ABEC9 grade precision tolerances and together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
As the ancient capital of the thirteen dynasties,Xi’an attracts many famous entrepreneurs of home and abroad to invest and is also the bridgehead of the western development. We adopt German equipment and technologies to produce kinds of bearings.
The Size of cylindrical roller produced by ours: Diameter:3~80mm,Length:3.5~110mm,There are G2,G3,G5 grade;Its material is from Gcr15 steel and hardness is HRC60~64 and surface roughness Ra is not exceeding 0.2. At the same time we have mass production of piston pin,crank pin and other pins.The piston pin and crank pin are usually made from 20CrMo,other pins are usually made from bearing steel with accuracy,surface hardness and roughness according to the industry standard or the requirements of customers. Also welcome for non-standard roller needles requirements
Now,I briefly introduce our products list as following:
| Needle Roller | ||
| Spec (mm) | Spec (mm) | Spec (mm) |
| 1*5.8 | 3*23.8 | 6*6 |
| 1*6.8 | 3*25.8 | 6*8 |
| 1*7.8 | 3*27.8 | 6*17.8 |
| 1*9.8 | 3*29.8 | 6*21.8 |
| 1.5*5.8 | 3.5*11.8 | 6*23.8 |
| 1.5*6.8 | 3.5*13.8 | 6*25.8 |
| 1.5*7.8 | 3.5*15.8 | 6*39.8 |
| 1.5*9.8 | 3.5*17.8 | 7*7 |
| 1.5*11.8 | 3.5*19.8 | 7*10 |
| 1.5*13.8 | 3.5*21.8 | 8*8 |
| 2*6.3 | 3.5*23.8 | 8*12 |
| 2*7.8 | 3.5*25.8 | 9*9 |
| 2*9.8 | 3.5*27.8 | 10*10 |
| 2*11.8 | 3.5*29.8 | 11*11 |
| 2*13.8 | 3.5*34.8 | 11*15 |
| 2*15.8 | 4*15.8 | 12*12 |
| 2*17.8 | 4*17.8 | 12*18 |
| 2*19.8 | 4*19.8 | 14*14 |
| 2*21.8 | 4*21.8 | 14*20 |
| 2.5*7.8 | 4*23.8 | 15*15 |
| 2.5*9.8 | 4*25.8 | 16*16 |
| 2.5*11.8 | 4*27.8 | 17*17 |
| 2.5*13.8 | 4*29.8 | 18*18 |
| 2.5*15.8 | 4*34.8 | 19*19 |
| 2.5*17.8 | 4*39.8 | 20*20 |
| 2.5*19.8 | 5*19.8 | 20*30 |
| 2.5*21.8 | 5*21.8 | 21*30 |
| 2.5*23.8 | 5*23.8 | 22*22 |
| 3*9.8 | 5*25.8 | 24*36 |
| 3*11.8 | 5*27.8 | 25*25 |
| 3*13.8 | 5*29.8 | 25*36 |
| 3*15.8 | 5*34.8 | 26*26 |
| 3*17.8 | 5*39.8 | 28*28 |
| 3*19.8 | 5*49.8 | 30*30 |
| 3*21.8 | 5.5*8 | 30*48 |
If you have any needs,pls contact me immediately !
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