NTN 7904UCG/GNP42U3G Super Precision Bearings

d:20 mm; D:37 mm; B:9 mm; d1:25.9 mm; d2:24.7 mm; D1:31.1 mm; D2:33.6 mm; a:8.3 mm; Contact angle α:15 °; rs min:0.3 mm; r1s min:0.15 mm; f0:14.9; Precision class:P42; Mass:0.04 kg; Brand:NTN; Dynamic load, C:7.65 kN; Static load, C0:4.9 kN; Nlim (oil):65,800 rpm; Nlim (grease):41,100 rpm; Preload l