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Steel needle rolling element for roller bearings. Nominal diameter Dw 4 mm; nominal length Lw 19.8 mm (GOST 25255-82). The price is per one piece.
Roller 4x19.8 B III - GOST 25255-82;
Cylindrical roller 4x19.8 mm ISO/NP 12297-1:2015
Needle roller 4x19.8 mm DIN 5401:2002-08;
RN-4x19.8 BF/G2 (SKF marking);
RN-4X19.8 B та RN-4X19.8 BF (could be substitued)
Rollers are made from steel ШХ15 according to GOST 801-78. They are subjected to special thermal treatment and provide hardness HRC 60. Hardness control system GOST 9013-59. Tolerance of average diameter not more than +10,25 / -16,25 micron. Rollers are degaussed.
It is allowed to store rollers at the next conditions:
- temperature 20 +/-5С;
- relative moistness not more than 60 percents.
0.0019 kg
19.8 mm
4 mm
1.9 kg
1 piece
Steel needle rolling element for roller bearings. Nominal diameter Dw 4 mm; nominal length Lw 19.8 mm (GOST 25255-82). The price is per one piece.
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