LEAF SPRING MEASUREMENT GUIDE

2024-11-01

A second method of identifying a leaf spring is by the spring’s dimensions. This is by far the most difficult method, but can be used if no stamping number is found or is unreadable. Five measurements will need to be taken to determine your leaf spring model.

THE FIRST MEASUREMENT

The first measurement is the Main Leaf Length. Leaf springs come in different types and will require a particular way to measure that style of leaf spring.

EYE TO EYE

For an Eye to Eye style leaf spring, measure from the center bolt to the center of the eye in both directions along the arch.

SLIPPER TO SLIPPER

For a Slipper to Slipper style leaf spring, measure from the center bolt to the end in both directions along the arch. multileaf truck spring

EYE TO SLIPPER

For an Eye to Slipper style leaf spring, measure from the center bolt to the center of the eye and center bolt to the end without, along the arch. measuring a leaf spring eye to slipper

CAMEL BACK STYLE LEAF SPRING

For a Camel Back style leaf spring, measure from the center bolt to the end of the main leaf in both directions along the arch. This is for Mack trucks only. measuring a camel back leaf spring for a mack truck

SINGLE POINT STYLE LEAF SPRING

And for a Single Point style leaf spring, measure from the center bolt to the end of the main leaf in both directions along the arch. End hole size and distance from the center bolt must be checked.
measure a single point leaf spring

THE SECOND MEASUREMENT

The second measurement taken is the Leaf Spring Width. This is measured at the center bolt from side to side across the leaf.
measuring leaf spring width

THE THIRD MEASUREMENT

The third measurement is the Pack Thickness. This is measured at the center bolt down the side of the spring including all leaves, tow eyes, shock eyes and pads.
measure leaf spring height

THE FOURTH MEASUREMENT

The next measurement is the Leaf Spring Arch. Again, depending on the leaf spring style, a particular measurement must be taken.

EYE TO EYE

For an Eye to Eye leaf spring, use a straight edge to mark the center of the eyes and measure the arch at the center bolt. Always measure to the top of the main leaf and do not include any pads or spacers.
measure leaf spring from eye to eye

SLIPPER TO SLIPPER

For a Slipper to Slipper style leaf spring, use a straight edge on the top of the slipper ends and measure the arch directly over the center bolt.
Slipper To Slipper Arch Measurement

CAMEL BACK STYLE LEAF SPRINGS

For Camel Back style leaf spring, use a straight edge to mark the top of the main leaf in both directions and measure the arch at the center bolt.
camel back leaf spring

SINGLE POINT STYLE LEAF SPRINGS

And for Single Point style leaf springs, use a straight edge to mark the top of the main leaf in both directions and measure the arch at the center bolt.
how to measure leaf spring arch

THE FINAL MEASUREMENT

The final measurement is the Eye Leaf length. This is measured from the center of the eye to the center bolt along the arch.
measure eye leaf length of leaf spring