22 | Chapter 3: General Data/Specifications
Bearings and Running Gear
H302 Frame size
Inches (mm)
Main bearing bore diameter
3.3755 (85.738)
3.3765 (85.763)
Crankshaft
Main bearing journal diameter
2.9975 (76.1365)
2.9980 (76.149)
Rod bearing journal diameter
3.2495 (82.537)
3.2500 (82.550)
End thrust clearance
0.006 (0.1524)
0.008 (0.2032)
Maximum allowable end thrust clearance
0.012 (0.3048)
Crankshaft web deflection – Maximum
0.002 (0.0508)
Main bearing
Inside diameter – Installed
3.000 (76.200)
3.002 (76.251)
Width
1.875 (47.625)
Wall thickness
0.187 (4.7498)
0.188 (4.7752)
Clearance range
0.002 (0.0508)
0.0045 (0.1143)
Maximum allowable clearance
0.007 (0.1778)
Connecting rod
Connecting rod length – CL to CL
8.50 (215.90)
Rod bearing bore diameter
3.423 (86.944)
3.424 (86.970)
Crosshead pin bearing bore diameter
2.0610 (52.349)
2.0615 (52.362)
Taper, ovality (out of round) and barrel
0.0005 (0.0127)
Side clearance
0.012 (0.3048)
0.018 (0.4572)
Rod bearings
Inside diameter – Installed with bolts torqued
3.252 (82.601)
3.254 (82.652)
Width
1.500 (38.100)
Wall thickness
0.0851 (2.1615)
0.0856 (2.1742)
Vertical clearance (crown)
0.0018 (0.04572)
0.0043 (0.10922)
Maximum allowable clearance
0.006 (0.1524)
Содержание H301 Series
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