Leaf Springs

Leaf Springs

LEAF SPRINGS & SPRING HARDWARE FOR TRAILERS

Accurately measuring your trailer springs and choosing the correct replacements is important for the function of your trailer and will make the job of replacing them much easier. Using replacement trailer springs with the correct length will keep the axle in the same position, eliminating the need to move fenders or suspension components like spring hangers or equalizer hangers. Matching your weight capacity, arch, and leaf count will keep the ride height of the trailer the same and keep the ride characteristics the same. Taking the correct measurements and matching your existing trailer springs will get your trailer back on the road quickly and with fewer headaches.
HOW TO MEASURE TRAILER LEAF SPRINGS VIDEO

HOW TO MEASURE TRAILER LEAF SPRINGS

  • Match the existing spring according to its shape and type (double eye, slipper-open eye end, slipper-hook end, slipper-flat end, or slipper-radius end), Length and Width.
  • Count the number of leaves, each layer of spring metal is considered a leaf.
  • Measure the length of the spring when the spring is not under load (jack up trailer by the frame), this is the free length of the spring.
  • Measure from the center of the front bushing in a straight line to the center of the rear bushing for DOUBLE-EYE and OPEN-EYE leaf springs.
  • Measure from the center of front bushing in a straight line to the end of spring for HOOK-END, FLAT-END and RADIUS END leaf springs.
  • The inside diameter of the bushing in the attaching eye of the spring needs to match the shackle bolts and spring hanger holes used to mount spring.
  • An inside diameter of 9/16" is the most common size, but some older trailers used 1/2" bushings/bolts.
  • Most leaf springs we sell include a 9/16" ID bushing in the closed eye, however some are supplied with a 1/2" ID bushing. Each of our springs will have the bushing size listed in the description.
  • Also note that spring capacity is given per each spring-thus a 4,000 lb. rated axle should be matched with two 2,000 lb. or higher capacity springs.