What is the difference between a main and rod journal?
The main journals are on the crank centerline and turn inside the main bearings. The rod journals are the crank surfaces that the “big ends” of the connecting rods with their rod bearings ride/push on. They are also sometimes collectively called “crank throws”.
How do you calculate journal bearing clearance?
The bearing clearance to journal radius ratio is called relative bearing clearance. It is usually shown as y in bearing design, and it is calculated as y = (D-d)/d. Relative bearing clearance (y) depends on various factors such as the load on the bearing, speed of the shaft, dimensions and tolerances.
What are rod journals?
A journal is the part of a shaft that rotates inside a bearing. For extra confusion, the connecting rod journals are abbreviated to rod journals and also commonly called crank pins , or big-end journals . The rod journals are connected to the main journals by webs .
What is the clearance of the journal bearing?
! Clearance The basic guideline universally used for diametral journal bearing clearance is 1.5 mils-per-inch of journal diameter. That is, a 4 inch diameter shaft would need about 6 mils of diametral clearance.
What is the displacement of a cat 3306?
CAT 3306 Displacement, bore and stroke Displacement 10.5 liter 638 CID Bore 4.75″ 120.65 mm Stroke 6.0″ 152.4 mm Click for CAT 3304 and CAT 3306 engine manuals and specs
How many Caterpillar manuals are there in the world?
The list of books we carry is very extensive and is over 1500 on Caterpillar alone. If you have a Cat manufactured 1989 and earlier chances are we have a manual for you.
How big is the engine in a cat 3304?
CAT 3304 Displacement, bore and stroke Displacement 7.0 liter 427 CID Bore 4.75″ 120.65 mm Stroke 6.0″ 152.4 mm Click for CAT 3304 and CAT 3306 engine manuals and specs
When to read the operation and maintenance manual?
Operation and Maintenance Manual for your machine for the maintenance and service requirements. Read, study, and keep this manual with the product. This manual should be read carefully before using this product for the first time and before performing maintenance. Whenever a question arises regarding your product,