1. Professional manuafacuturer 2. Iron base oilless self-lubricating bearing 3. Precision sizing ... powder——Forming——Sintering——Sizing——Oil impregnant——Packing——ShippingFeature1. Chemical composition: iron, carbon, copper, other2. Radial crushing strength: 196-392Mpa ... -6.4g/cm35. Hardness: HB30-70Manufacturability1. Auto Press: 50T, 100T, 140T2. Hydraulic Press: 100T, 315T, 600T, 800T3. Six sinter ...