C7.1 Marine Propulsion Engine Caterpillar

Main Bearing Journal

Usage:

C7.1 JEZ

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Table 1
Specifications for 445-9324 Bearing
Item	Qty	Part	Specification Description
-	-	-	The original size of the main bearing journal is 83.980 to 84.000 mm (3.3063 to 3.3071 inch).
-	-	-	Maximum permissible wear of the main bearing journals is 0.040 mm (0.0016 inch).
-	-	-	Radius of the fillet of the main bearing journals is 3.875 to 4.125 mm (0.1526 to 0.1624 inch).
-	-	-	Width of new main bearing journal where the thrust washer is installed is 35.165 to 35.235 mm (1.3845 to 1.3872 inch).
-	-	-	Width of new main bearing journal where the thrust washer is not installed is 35.15 to 35.25 mm (1.384 to 1.388 inch).
-	-	-	First oversize bearing shell dimension is 0.25 mm (0.010 inch). Second oversize bearing shell dimension is 0.50 mm (0.020 inch). Third oversize bearing shell dimension is 0.76 mm (0.030 inch).
-	-	-	Thickness at center of the shells of oversize bearing shell 0.25 mm (0.010 inch) is 2.226 to 2.232 mm (0.0876 to 0.0879 inch).
-	-	-	Thickness at center of the shells of oversize bearing shell 0.50 mm (0.020 inch) is 2.353 to 2.359 mm (0.0926 to 0.0929 inch).
-	-	-	Thickness at center of the shells of oversize bearing shell 0.76 mm (0.030 inch) is 2.480 to 2.486 mm (0.0976 to 0.0979 inch).
-	-	-	Width of the main bearing shells is 26.32 to 26.58 mm (1.036 to 1.046 inch).
-	-	-	Clearance between the bearing shell and the main bearing journals is 0.036 to 0.094 mm (0.0014 to 0.0037 inch).

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