Machine Design Databook Episode 3 part 1 doc

DESIGN OF BEARINGS AND TRIBOLOGY 23.15 DESIGN OF BEARINGS AND TRIBOLOGY TABLE 23-2 Journal bearing design practices Bearing modulus (minimum) Maximum pressure, P Diameter clearance ratio c ¼ d Viscosity, 1 L d Viscosity,  S 00 ¼ cP Pa s  10À3 1 n P  n0 P SI Units, Â10À9 S 00 ¼ Machinery Bearing kgf/mm2 kpsi MPa Automobile and aircraft engines Main Crankpin Wrist pin 0.56–1.19 1.06–2.47 1.62–3.62 0.8–1.7 1.5–3.5 2.3–5.0 5.50–11.70 — 10.40–24.40 15.00–34.80 0.1–1.8 0.7–1.4 1.5–2.2 to to 15 10 36.3 24.2 19.3 Gas and oil engines (fourstroke) Main Crankpin Wrist pin 0.49–0.85 0.90–1.27 1.27–1.55 0.7–1.2 1.4–1.8 1.8–2.2 4.85–8.35 0.001 8.80–12.40