Crankshaft Deflection, Limits Plate 70817-40E Type Normally obtainable for a new or recently overhauled engine mm Realignment recommended mm Absolute maximum permissible mm 1 2 1 2 1 2 S46MC-C K50MC L50MC S50MC S50MC-C K60MC L60MC L60MC-C S60MC S60MC-C K70MC L70MC L70MC-C S70MC S70MC-C L80MC S80MC S80MC-C K80MC-C L90MC L90MC-C K90MC K90MC-C S90MC-C K98MC K98MC-C 0.23 0.12 0.17 0.23 0.23 0.15 0.20 0.22 0.27 0.28 0.18 0.24 0.25 0.32 0.33 0.27 0.36 0.38 0.22 0.30 0.27 0.25 0.20 0.36 0.25 0.20 0.46 0.25 0.34 0.46 0.47 0.31 0.40 0.45 0.55 0.56 0.37 0.48 0.49 0.64 0.66 0.54 0.73 0.75 0.44 0.60 0.54 0.50 0.41 0.72 0.49 0.41 0.62 0.34 0.45 0.61 0.62 0.41 0.54 0.59 0.73 0.75 0.49 0.63 0.65 0.85 0.88 0.72 0.97 1.00 0.58 0.81 0.72 0.67 0.54 0.96 0.65 0.54 0.69 0.38 0.51 0.69 0.70 0.46 0.61 0.67 0.82 0.84 0.55 0.71 0.74 0.96 0.99 0.81 1.10 1.13 0.66 0.92 0.81 0.75 0.61 1.08 0.74 0.61 0.93 0.51 0.68 0.92 0.94 0.62 0.81 0.89 1.10 1.13 0.74 0.95 0.98 1.28 1.32 1.08 1.46 1.50 0.88 1.22 1.08 1.00 0.82 1.45 0.98 0.81 0.93 0.51 0.68 0.92 0.94 0.62 0.81 0.89 1.10 1.13 0.74 0.95 0.98 1.28 1.32 1.08 1.46 1.50 0.88 1.22 1.08 1.00 0.82 1.45 0.98 0.81 1. Normal for all crank throws. 2. Permissible for the foremost crank throw, when the crankshaft fore end is provided with a torsional vibration damper, tuning wheel or directly coupled to a generator rotor. Permissible for the aftmost crank throw, when the crankshaft aft end is provided with a flexible coupling. When judging the alignment on the above “limiting-value”' basis, make sure that the crankshaft is actually supported in the adjacent bearings. (See ‘Alignment of Main Bearings’ point 2.3 ‘floating journals’).

70817-40e

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Crankshaft Deflection, Limits Plate 70817-40E

Type

Normally obtainable for a new or recently overhauled engine mm

Realignment recommended

mm

Absolute maximum permissible

mm

1 2 1 2 1 2

S46MC-C K50MC L50MC S50MC S50MC-C K60MC L60MC L60MC-C S60MC S60MC-C K70MC L70MC L70MC-C S70MC S70MC-C L80MC S80MC S80MC-C K80MC-C L90MC L90MC-C K90MC K90MC-C S90MC-C K98MC K98MC-C

0.23 0.12 0.17 0.23 0.23 0.15 0.20 0.22 0.27 0.28 0.18 0.24 0.25 0.32 0.33 0.27 0.36 0.38 0.22 0.30 0.27 0.25 0.20 0.36 0.25 0.20

0.46 0.25 0.34 0.46 0.47 0.31 0.40 0.45 0.55 0.56 0.37 0.48 0.49 0.64 0.66 0.54 0.73 0.75 0.44 0.60 0.54 0.50 0.41 0.72 0.49 0.41

0.62 0.34 0.45 0.61 0.62 0.41 0.54 0.59 0.73 0.75 0.49 0.63 0.65 0.85 0.88 0.72 0.97 1.00 0.58 0.81 0.72 0.67 0.54 0.96 0.65 0.54

0.69 0.38 0.51 0.69 0.70 0.46 0.61 0.67 0.82 0.84 0.55 0.71 0.74 0.96 0.99 0.81 1.10 1.13 0.66 0.92 0.81 0.75 0.61 1.08 0.74 0.61

0.93 0.51 0.68 0.92 0.94 0.62 0.81 0.89 1.10 1.13 0.74 0.95 0.98 1.28 1.32 1.08 1.46 1.50 0.88 1.22 1.08 1.00 0.82 1.45 0.98 0.81

0.93 0.51 0.68 0.92 0.94 0.62 0.81 0.89 1.10 1.13 0.74 0.95 0.98 1.28 1.32 1.08 1.46 1.50 0.88 1.22 1.08 1.00 0.82 1.45 0.98 0.81

1. Normal for all crank throws.

2. Permissible for the foremost crank throw, when the crankshaft fore end is provided with a torsional vibration damper, tuning wheel or directly coupled to a generator rotor.

Permissible for the aftmost crank throw, when the crankshaft aft end is provided with a flexible coupling.

When judging the alignment on the above limiting-value' basis, make sure that the crankshaft is actually supported in the adjacent bearings. (See Alignment of Main Bearings point 2.3 floating journals).

701 Safety Precautions and Engine Data702 Checks during Standstill Periods703 Starting, Manoeuvring and Running704 Special Running Conditions705 Fuel and Fuel Treatment706 Performance Evaluation and General Operation707 Cylinder Condition708 Bearings, and Circulating Oil709 Water Cooling System 710 IndexBACK TO MAIN INDEXVOLUME II S50MC-C MAINTENANCEVOLUME III S50MC-C SPARE PARTSVOLUME II K98MC MAINTENANCEVOLUME III K98MC SPARE PARTS