Shim ratio and shim amount formula
Name_______________________
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Gap
CD
BL
*note: to find the Gap amount, you must measure the gap at 12 o’clock and 6 o’clock and subtract the
smaller measurement from the larger measurement. This will give the Gap amount needed for use in the
formula.
𝐵𝑎𝑠𝑒 𝐿𝑒𝑛𝑔𝑡ℎ
= 𝑆ℎ𝑖𝑚 𝑅𝑎𝑡𝑖𝑜
𝐶𝑜𝑢𝑝𝑖𝑛𝑔 𝐷𝑖𝑎𝑚𝑒𝑡𝑒𝑟
𝑆ℎ𝑖𝑚 𝑅𝑎𝑡𝑖𝑜 ⋅ 𝐺𝑎𝑝 = 𝑆ℎ𝑖𝑚 𝐴𝑚𝑜𝑢𝑛𝑡
Workforce Solutions
𝐵𝐿
𝐶𝐷
= 𝑆𝑅
𝑆𝑅 ⋅ 𝐺 = 𝑆𝐴