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英國帕金斯2806發(fā)動(dòng)機曲軸、主軸承和飛輪技術(shù)資料

2016-5-8 16:50:05

英國帕金斯2806發(fā)動(dòng)機曲軸、主軸承和飛輪技術(shù)資料

Crankshaft, main bearings and flywheel

Diameter of main bearing journal (G2)  ... ... ... ... ... ... ... ... ... ... 20,650 +/- 0,020 mm (4.7500 +/- 0.0008 in)

Journal undersize by 0,6 mm (0.025 in)  ... ... ... ... ... ... ... ... ... ... .. 20,05 +/- 0,020 (4.7250 +/- 0.0008 in)

Journal undersize by ,27 mm (0.050 in)  ... ... ... ... ... ... ... ... ... 9,80 +/- 0,020 mm (4.7000 +/- 0.0008 in)

Clearance between a new bearing and the journal (G). ... ... ... ... .. 0,09 to 0,86 mm (0.006 to 0.007 in)

Maximum permissible clearance between the

bearing and journal.. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...  0,25 mm (0.00 in)

Diameter of main bearing bore  ... ... ... ... ... ... ... ... ... ... ... ... ... 29,89 +/- 0,0 mm (5.8 +/- 0.0005 in)

Diameter of main bearing bore, oversize by 0,6 mm (0.025 in). 0,526 +/- 0,0 mm (5.88 +/- 0.0005 in)

Diameter of connecting rod journal (G4) . ... ... ... ... ... ... ... ... ... . 90,000 +/- 0,020 mm (.54 +/- 0.0008 in)

Journal undersize by 0,6 mm (0.025 in)  ... ... ... ... ... ... ... ... ... ... ...  89,70 +/- 0,020 (.585 +/- 0.0008 in)

Journal undersize by ,27 mm (0.050 in)  ... ... ... ... ... ... ... ... ... . 88,70 +/- 0,020 mm (.49 +/- 0.0008 in)

Clearance between a new bearing and the journal . ... ... ... ... ... ... .. 0,062 to 0,60 mm (0.0024 to 0.006 in)

Maximum permissible clearance between the

bearing and journal.. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...  0,20 mm (0.008 in)

End-float of crankshaft. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 0,5 to 0,55 mm (0.006 to 0.022 in)

Maximum permissible end-float (with used bearings) . ... ... ... ... ... ... ... ... ... ... ... ... ... ...  0,89 mm (0.05 in)

Maximum protrusion of dowel (G) . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...  6,4 mm (0.25 in)


 

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