SAE J2523:2019 pdf free
SAE J2523:2019 pdf free.Rolling Circumference Index Groups for Agricultural Tractor Drive Tires
This SAE Standard is established for the following purpose:
a. Simplify the application of drive wheel tires to agricultural vehicles especially those with multiple drive axles having tires of different sizes.
b. Provide a pattern to combine similar sized tires into Roling Circumference Index groups with uniform spacing between groups.
The distance traveled by a tire in one revolution with no relative slip between the tire and ground. The measurement is made on a flat, level, hard surface, and unless otherwise specified is done with the tire loaded to its rated capacity and inflated to its corresponding rated inflation pressure.
Rolling Circumference Index groups have been selected to accommodate existing tire sizes. As a result, vehicles designed for use with existing tires should work with tires designed to the new standard and new vehicles designed for new tire sizes should also accept many existing sizes.
The ratio of Rolling Circumference is the same between any two Rolling Circumference Index groups having the same difference in RCI group numbers. This allows convenient identification of suitable tire sets in MF WD tractors. For example, a rear tire in RCI group 46 mated with a front tire in RCI group 41 represents a 5 RCI step difference. Any other tire set with a 5 RCI step difference would mechanically fit the tractor.
Tires with industry service codes R-1 and R-1W have whole number RCI values, whereas service code R-2 tires are positioned on the 0.5 increment of RCI due to the unique dimensional difference associated with R-2 tires.
Basic tire dimensions for each tire size are as defined by The Tire and Rim Association, Inc., and other tire standards publications.
RCI values for specific tire sizes are shown in the general data pages in the agricultural section of The Tire and Rim Association Yearbook.SAE J2523 pdf free download.
