How To Determine Weight Capacity of Double Eye Leaf Springs on Trailer
Question:
I have a pair of double eyelet leaf springs that measure 22 1/2inch center to cente,has a 5 1/2inch arc,5 leafs,1 3/4inch wide ,5/16 thick. what would weight rating for each.
asked by: Pat M
Expert Reply:
The best way to determine the weight capacity of your leaf springs would be to check the weight rating of the axle on your trailer. The trailer will have a plate or sticker on it that will list the VIN number. The weight rating of the axle should be listed on that same plate or sticker. Also, the axle could have a tag or plate on it that will list the weight capacity.
You can also tell the weight capacity of the axle by measuring the diameter of the axle. A 2,000-lb axle will have an axle diameter of 1-3/4 inch. A 3,500-lb. axle will have a axle diameter of 2-3/8 inches and a 6,000-lb. to 7,200-lb. axle will have an axle diameter of 3 inches.
Since the axle will have two leaf springs, one on each side, the weight rating of the leaf springs will be 1/2 of the weight capacity of the axle. For example, a 3,500-lb axle will use two leaf springs rated at 1,750 lbs each.
I am including a link to a FAQ page on trailer suspensions and it will list the axle diameters for different axle weight capacities.
Also, I am including a link to a FAQ page on leaf springs. It will have a chart that will show the sizes and capacities of the leaf springs. The number of leafs and thickness of each leaf is not a direct indication of the spring capacity.
The 4-Leaf Double-Eye Spring, part # e54SR, you have referenced is a spring designed to be used on a 3,500-lb axle.
Product Page this Question was Asked From
4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 25-1/8" Long
- Trailer Leaf Springs
- Double Eye Springs
- 3500 lbs
- 1-3/4 Inch Wide
- 4 Leaf
- 25-1/8 Inch Long
- Painted
- etrailer
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: 4-Leaf Double-Eye Spring for 5,000-lb Trailer Axles - 25-1/4" Long
- Article: Double-Eye Trailer Suspension System Review
- Shop: etrailer Rust-Resistant 4-Leaf Double Eye Spring for 3.5K Trailer Axles - 25-1/8" - Dacromet
- Shop: 6-Leaf Double-Eye Spring for 4,500-lb Trailer Axles - 26" Long
- Shop: 6-Leaf Double-Eye Spring for 6,000-lb Trailer Axles - 26" Long
- Q&A: Will DeeMaxx Disc Brake Kit Fit 2013 EZ Loader Boat Trailer
- Search Results: trailer leaf springs
- Shop: Optronics Trailer Light Kit for Trailers over 80" Wide - Submersible - 25' Wiring Harness
- Shop: 5-Leaf Double-Eye Spring for 6,000-lb Trailer Axles - 25-1/4" Long
- Search Results: 205/65~10
- Shop: Demco Hydraulic Brake Actuator - Drum - Zinc - 2" Ball - 7,000 lbs
- Q&A: Replacement Leaf Spring for a Grand Design Reflection 303RLS
- Shop: Base Plate for Tow Bar
- Search Results: hydraulic brake actuator
- Shop: Vehicle Tow Bar Wiring
- Video: Review of Dexter Trailer Leaf Spring Suspension - 1-3/4 Inch Round Trailer Axle U-Bolt - SP01-020
- Search Results: 24 inch leaf springs
- Search Results: leaf spring suspension
- Q&A: What Rotors Fit With the DeeMaxx Trailer Idler Hub # DE36VR?
- Search Results: manual reverse lockout
- Search Results: 3500 lb axle
- Shop: Spare Tire Cover
- Video: MORryde Suspension Upgrade Kit for Tandem Axle Trailers Installation
- Shop: Trailer Hitch
- Shop: Trailer Wiring
- Q&A: What is the Difference Between Load Range B and C Trailer Tires
- Video: Review of etrailer Trailer Leaf Spring Suspension - 6 Leaf Double Eye Spring 4500 lbs Axle - e27SR
- Q&A: What is Width of Slipper Spring part # e33SR
- Q&A: Availability of 4 Leaf Springs that are 26 Inches Long
- Article: How to Tell the Weight Rating of a Trailer Axle