CYLINDRICAL NEEDLE ROLLERS
Dimensions: 3.5x19.8 mm G2
NRB type - end faces flat
(DIN 5402-3/ ISO 3096)
Technical characteristic:
GRADE |
DIAMETER TOLERANCE (μm) |
SORTING GROUPS VDwL (μm) |
MAX ROUNDNESS DEVIATION ΔRw (μm) |
MAX SURFACE ROUGHNESS Ra (μm) |
LENGTH (mm) |
LENGTH TOLERANCE h13 (mm) |
|
| DA | A | ||||||
| G2 | +0 -10 | 2 | 1.0 | 0.2 | - | 6 | +0 -0.180 |
| 6 | 10 | +0 -0.220 | |||||
| 10 | 18 | +0 -0.270 | |||||
| 18 | 60 | +0 -0.330 | |||||
| 30 | 50 | +0 -0.390 | |||||
Chemical composition:
| Material | C % | Mn % | Si % | P % | S % | Cr % |
| 100Cr6 | 0.93 ÷ 1.05 | 0.25 ÷ 0.45 | 0.15 ÷ 0.35 | ≤0.015 | ≤0.025 | 1.35 ÷ 1.6 |
International equivalents of material:
| ITALY | SPAIN | GERMANY | CHINA | USA |
| UNI 100Cr6 | UNE F 1310 | W. nr. 1.3505 | GCr15 | AISI/SAE 52100 |
• Cylindrical needle-rollers are hardened and tempered with value
HRC 58-65 (670 / 840 HV) in order to achieve the maximum mechanical strength.
• The cylindrical surface of needles is super-finishing (polished).
• Mass: 1.5 kg / 1000 pcs