Needle rollers provided by CYJ has a complete set of breeds and spec and they are made by bearing steel, rigidity is HRC60¡«64, roughness of the surface Ra is less than 0.2.
Dimension range of cylindrical roller: Dw:3¡«30£¬Lw£º5¡«50£»they are made of GCr15 steel (bearing steel), its rigidity is HRC60¡«64£»roughness of the surface Ra is less than 0.2. We also produce piston pin, crank pin and other pins and they usually are made of Gcr15 steel (bearing steel), their precision, rigidity and roughness of the surface are in accordance with the standard in the relevant industry and can satisfy demand of the users.
Main Structure Style£º
Bearing No. Characteristics of Structure
Dw X Lw Needle with Round End
PDw X Lw Needle with Flat End

Tolerance Level VDWL has max amount of change of diameter in group and batch Tolerance of average diameter DWMP with optimized grouping Circular tolerance is max. Max Amount of Change of the Diameter is the VDWL. Tolerance of Length
G2 2 0/-2£¬-1/-3£¬-2/-4£¬-3/-5£¬-4/-6£¬-5/-7£¬-6/-8£¬-7/-9£¬-8/-10 1 1 h13
G3 3 0/-3£¬-1.5/-4.5£¬-3/-6£¬-4.5/-7.5£¬-6/-9£¬-7/-10 1.5 1.5
G5 5 0/-5£¬-3/-8£¬-5/-10 2.5 2.5
Needle roller Designation

Mass Approx
per1000pcs

 Boundary Dimensions
DW LW
kg mm
1¡Á5.8 0.034 1 5.8
1¡Á6.8 0.042 1 6.8
1¡Á7.8 0.047 1 7.8
1¡Á9.8 0.059 1 9.8
1.5¡Á5.8 0.08 1.5 5.8
1.5¡Á6.8 0.094 1.5 6.8
1.5¡Á7.8 0.108 1.5 7.8
1.5¡Á9.8 0.136 1.5 9.8
1.5¡Á11.8 0.164 1.5 11.8
1.5¡Á13.8 0.191 1.5 13.8
2¡Á6.3 0.14 2 6.3
2¡Á7.8 0.19 2 7.8
2¡Á9.8 0.24 2 9.8
2¡Á11.8 0.29 2 11.8
2¡Á13.8 0.34 2 13.8
2¡Á15.8 0.39 2 15.8
2¡Á17.8 0.44 2 17.8
2¡Á19.8 0.49 2 19.8
2¡Á21.8 0.54 2 21.8
2.5¡Á7.8 0.3 2.5 7.8
2.5¡Á9.8 0.38 2.5 9.8
2.5¡Á11.8 0.45 2.5 11.8
2.5¡Á13.8 0.53 2.5 13.8
2.5¡Á15.8 0.61 2.5 15.8
2.5¡Á17.8 0.69 2.5 17.8
2.5¡Á19.8 0.76 2.5 19.8
2.5¡Á21.8 0.84 2.5 21.8
2.5¡Á23.8 0.92 2.5 23.8
3¡Á9.8 0.54 3 9.8
3¡Á11.8 0.65 3 11.8
3¡Á13.8 0.76 3 13.8
3¡Á15.8 0.87 3 15.8
3¡Á17.8 0.99 3 17.8
3¡Á19.8 1.1 3 19.8
3¡Á21.8 1.21 3 21.8
3¡Á23.8 1.32 3 23.8
3¡Á25.8 1.43 3 25.8
3¡Á27.8 1.54 3 27.8
3¡Á29.8 1.61 3 29.8
3.5¡Á11.8 0.91 3.5 11.8
3.5¡Á13.8 1.05 3.5 13.8
3.5¡Á15.8 1.19 3.5 15.8
3.5¡Á17.8 1.35 3.5 17.8
3.5¡Á19.8 1.51 3.5 19.8
3.5¡Á21.8 1.67 3.5 21.8
3.5¡Á23.8 1.85 3.5 23.8
3.5¡Á5.8 1.96 3.5 25.8
3.5¡Á27.8 2.1 3.5 27.8
3.5¡Á29.8 2.25 3.5 29.8
3.5¡Á34.8 2.65 3.5 34.8
4¡Á15.8 1.55 4 15.8
4¡Á17.8 1.75 4 17.8
4¡Á19.8 1.95 4 19.8
4¡Á21.8 2.14 4 21.8
4¡Á23.8 2.33 4 23.8
4¡Á25.8 2.53 4 25.8
4¡Á27.8 2.62 4 27.8
4¡Á29.8 2.95 4 29.8
4¡Á34.8 3.4 4 34.8
4¡Á39.8 3.9 4 39.8
5¡Á19.8 3.03 5 19.8
5¡Á21.8 3.36 5 21.8
5¡Á23.8 3.58 5 23.8
5¡Á25.8 3.98 5 25.8
5¡Á27.8 4.18 5 27.8
5¡Á29.8 4.6 5 29.8
5¡Á34.8 5.4 5 34.8
5¡Á39.8 6.15 5 39.8
5¡Á49.8 7.5 5 49.8
Chamfering Dimension of Needle with Flat End. Diagram 2(Unit: mm)
DwNominal Diameter of Needle with Flat End Limit Chamfering
Exceed Chamfering rmin rmax
  1 0.1 0.3
1 3 0.1 0.4
3 5 0.1 0.6

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