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Kathysia industrial Co., Ltd was reorganized from Zhengzhou spring factory, which founded in 1957, having more than 60 years of professional experience in this field. Kathysia is a designated spring products supplier by the Chinese ministry of machinery industry, and a member of China spring association.

We Supply all kinds of Springs for all applications, If you can’t find a stock spring for your application, or would like to match a competitor’s spring not offered through this website, Our engineering staff is ready to answer your questions or assist in designing the right spring for your application.

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Truck Leaf Springs and Hauling: What You Need to Know

If your leaf springs have a capacity of 3,000 lbs., and you overload them with 3,200 lbs., during the first trip, you’ll not likely have an immediate problem, but if you constantly overload the springs with cargo in excess of the limit, you’ll eventually have difficulty.

Leaf spring - Wikipedia

#1 Source For How To Measure Leaf Springs - General Spring

A leaf spring's width is measured by the distance from one edge to the other along the top spring. On most leaf springs, the width is between 2.5 inches and 3.0 inches. Whereas the length of leaf springs correlates to the measurements of a vehicle's rear-axle suspension, the width is an indicator of the shock absorption needs of a given vehicle.

How Are Trailer Leaf Springs Weight Capacities Rated

There is usually two capacities listed on a leaf spring. The spring capacity and the axle capacity. For the 4-Leaf Double-Eye Spring # SP-212275 that you referenced it has a spring capacity of 1,750 lbs meaning that the individual spring can handle 1,750 lbs.

How To Measure Leaf Springs - EATON Detroit Spring

How To Measure Leaf Springs. The Wrong Way To Measure Leaf Springs. The wrong way to measure springs is eye to eye. You know, taking the tape and measuring the spring straight from one end to the other. It’s wrong because springs flex up and down depending on the weight applied, which changes the length of the spring a different amount

Leaf Spring Technical Information - Landrum Performance

Multi-Leaf Spring – This type of leaf spring has more than 1 leaf in its assembly. It consists of a center bolt that properly aligns the leaves and clips to resist its individual leaves from twisting and shifting. Mono Leaf Spring – Consists of one main leaf where the material’s width and thickness are constant.

How to Determine the Capacity of Trailer Leaf Springs and

Some single leaf springs can carry more weight than a 5 leaf spring that seems to have 5 leafs all the same thickness as the single leaf spring. Typical Axle Diameters Based on Axle Capacity: 1,000-lb - 2,000-lb Axles: 1-1/2inch - 1-3/4inch diameter 3,500-lb Axles: 2-3/8inch diameter - Can have a 3-1/2inch diameter, but rarely

Leaf Spring Technical Information - Landrum Performance

LEAF SPRING RATE. For example, if you want 250 lbs. on the left rear and 225 lbs. on the right rear, you should not install a taller spring on the left rear with the same spring rate as the right rear. One should use the same free height, but change rates. The same theory applies to leaf springs.

Leaf Trailer Spring — 4 Leaves, 3500-Lb. Capacity/Pr

When using one axle, order two springs to the correct capacity and one shackle set. With tandem axles, order 4 correct capacity springs and one tandem axle shackle set. Sold individually. Leaf Trailer Spring — 4 Leaves, 3500-Lb.

How to Calculate Spring Weight - Quality Spring

Definition: The calculation of the mass weight of a coil spring based on its wire size, outer diameter, number of coils, and density of wire. Can be calculated using the corresponding formulas and equations.

CJ Classics Mustang Leaf Spring 4-Leaf Pair 1965-1973

Don't wait a minute longer and purchase this brand-new Pair of CJ Classics 4-Leaf Leaf Springs for your classic 1965-1973 Mustang today from CJ Pony Parts! he pair of two (2) leaf springs will help restore your classic pony's original ride and handling!

What leaf spring capacity do I need? Page: 1 - iboats

Jan 04, 2012  Going overboard will drastically affect the ride quality. So you don't always need to match the hub/axle rating The trailer under my boat currently has a 3500 pound axle, but the boat weighs roughly 1600 pounds. There is no way I'm running springs rated for 3500, they are 2000# springs.

The Definition of Spring Rate and Load Rate - EATON

A Spring’s Spring Rate. A spring’s Spring Rate is the amount of weight required to deflect a spring one inch. The lower the Spring Rate, the softer the spring. The softer the spring, the smoother the ride. If you’re still having trouble, think of it as a fat guy on a mattress. A fat guy on a

Buy OEM & Heavy Duty Replacement Leaf Springs - General Spring

OEM Standard Replacement and Heavy Duty Leaf Springs for Trucks, Vans and SUVs. General Spring offers front and rear OEM Replacement and heavy duty leaf springs for all vehicles. On average, our customers have rated our leaf springs, 4.7 out of 5 based on 6746 ratings.

Trailer Leaf Springs at Trailer Parts Superstore

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.

Buy Replacement Leaf Springs - OEM Quality Leaf Springs In

Buy leaf springs for trucks, trailers, and cars at www.tvimpermeabilizzazioni.it. We stock a complete line of OEM quality replacement leaf springs for all vehicles. Call 1-800-358-4751 or visit www.tvimpermeabilizzazioni.it. From boat trailer leaf springs to heavy-duty truck spri

Tech Support :: SuspensionMAXX

SuspensionMAXX Adjustable Leveling Kits. Less expensive than lift kits. Adjustable torsion bar keys, extended sway bar links. Chevy, Ford, Dodge, Toyota, GMC, Hummer and more. Get the "Just Right" amount of leveling lift for your needs with a SuspensionMAXX adjustable leveling kit.

LEAF SPRINGS, Spring Rate vs. Height

You don't count weight of the rear axle, because it sits on the floor below the spring (unsprung weight). When the car is fully assembled and full laden, load should be 450 pounds on each leaf spring, and the spring should be flat. Curb weight is defined as no load and 2-gallons of fuel in the tank, with spare tire and the traveling tools on board.

Shipping leaf springs how much do they weigh???? - Off

Apr 04, 2001  Re: Shipping leaf springs how much do they weigh???? I shipped a set of CJ springs and RS9000's from OK last year for a total of $75. What we did was boxed the shocks and shipped the springs bare; put the labels right on em.

Leaf spring - Wikipedia

Unlike coil springs, leaf springs also locate the rear axle, eliminating the need for trailing arms and a Panhard rod, thereby saving cost and weight in a simple live axle rear suspension. A further advantage of a leaf spring over a helical spring is that the end of the leaf spring may be guided along a definite path.

how much do stock leaf spring weigh? - TTORA Forum

May 07, 2008  i just want to know if anyone knows how much stock leaf springs weigh? i found some leafs in colorado but he dosnt know how much they weigh so i dont know how much to tell ups they weigh to get a shipping quote.

LEAF SPRINGS Height Dimensions

Spring eye = 1-1/4" diameter (0.625"- radius). Leaf thickness = 7/32" Number of functional leaves = 6 If you place the original MGA leaf spring upside down on the floor, then start measuring from the floor up, you get: 0.22 = Thickness of top loop 1.25 = Eye inside diameter 3.60 = Free camber 1.31 =

What Are Leaf Springs? - YourMechanic Advice

Nov 17, 2015  Springs in general, and leaf springs in particular, help perform the first two of these functions: they support the weight of the vehicle while absorbing bumps. A leaf spring is usually attached to the body or frame of the vehicle at each end, while the wheel or

Leaf Springs Calculator − Leaf Springs Stiffness Rate in

Leaf Springs Calculator. Example: Calculate the Stiffness of the leaf spring for the given details. Youngs Modulus (E): 25 mW Number of Leaves (n): 15 Span (L): 10 cm Width of Leaves (b): 5 mW/cm 2 Thickness of Leaves (t):20 mW/cm 2 Solution: Apply Formula: k = 8Enbt 3 /3l 3 k = 8*25*15*5*20 3 /

Patent Patrol: Lauf's brilliant leaf spring rear

Nov 19, 2019  For the same reason they believe their composite fiber leaf springs are the perfect solution for gravel forks, they think this will revolutionize the rear of the bike, too. The big problems with short travel suspension designs is that most of them still rely on some form of linkage-driven system. That means both weight and complexity. And friction.

Ways to Identify a Leaf Spring - Dayton Parts

Multi Leaf Springs: Part numbers may be found in one of these locations: C. On the side, bottom or top of the clip (most common) D. On the end of the shortest leaf E. On bottom of the last leaf beside the center bolt (sometimes this is hidden until the spring is removed) Three Leaf Trailer Springs: F. On the outside of the hook Catalog 215

Leaf spring - Wikipedia

A leaf spring takes the form of a slender arc-shaped length of spring steel of rectangular cross-section. In the most common configuration, the center of the arc provides location for the axle, while loops formed at either end provide for attaching to the vehicle chassis.

Leaf spring weight jacks? - Grease Monkey Hangout - Lone

Dec 03, 2006  can you put weight jacks on leaf springs and if so how? yes we have them on the 7 tps pinto .also the number 1 tps car has them .his jack set up is different than ours .both work out great .we both have slider blocks instead of plain hangers .takes alittle time to make them www.tvimpermeabilizzazioni.it a small area to work with www.tvimpermeabilizzazioni.it they are a plus .

BDS Suspension Catalog V-01

leaf springs, add-a-leaf display materials leaf spring specifications part # eye to eye dimension free height dimension eye to center pin front eye to center pin rear eye (f/r) diameters # of leafs per pack width weight center pin size degree of shim 001201 45.500 3.313 23.250 23.250 1.5/1.125 5 2.5 44.55 3/8 n/a

New OME Dakar Leaf Pack Review - Tacoma World

Oct 21, 2019  D29XL for the CS047R leaf pack. It will increase the spring rate by 15% and the overall lift height by 15mm. Unless you are running an excessive amount of weight, usually around 1,000lbs running the add-a-leaf can adversely affect the ride quality.

Mono/Multi leaf springs. - Chevy Message Forum

Sep 07, 2009  Vehicles with 307 and 327 engines received mono-leaf springs. Generally, Z28's used 4-leaf springs and the other multi-leaf spring applications used 5-leaf springs. However, the use of 4-leaf springs was not limited to just 68-69 Z28's. Spring selection was a function of weight and options - and this was fine-tuned in 1969.

3-Leaf Double-Eye Spring for 2,000-lb Trailer Axles - 20-3

If the 4-leaf springs and the 3-leaf springs you are looking at have the same weight capacity and dimensions, then there is really no advantage in choosing the 4-leaf spring over the 3-leaf spring. It is recommended that you replace your leaf springs in pairs so you are using the same springs on each axle.

1966 FORD MUSTANG Stock Height Springs - Leaf Spring Type

Find 1966 FORD MUSTANG Stock Height Springs with Leaf Spring Type and V8 Engine Type and get Free Shipping on Orders Over $99 at Summit Racing!

Choosing Leaf Springs - HowStuffWorks

Open-eye leaf springs have only one "eye," or open hole. The other end of an open eye leaf spring can be a hook end or a flat end. Properly installing leaf springs will ensure the best suspension for your tow vehicle; read about leaf spring installation on the next page.

Leaf spring calculator - Tribology

Leave spring width b 10-3 m: Leave spring thickness h 10-3 m: Leave spring length L 10-3 m: Modulus of elasticity E 10 9 Pa: Load F N : Moment of bending M = F L 10-3 Nm: Moment of inertia Ix 10-12 m 4: Section modulus Sx = Ix / e 10-9 m 3: Tensile stress σ = Mx / Sx 1) 10 6 Pa: Deflection δ 10-3 m: Slope θ rad: Stiffness k = dF / dδ N/m

Suspension - Leaf Spring - 929-228 - Rear Leaf Spring

This replacement leaf spring will restore proper spring tension and suspension performance. Ideal replacement - this leaf spring matches the fit and function of the original equipment spring for this vehicle application; Durable material - engineered for long-lasting durability, this steel leaf spring features a corrosion-resistant finish

Ford Truck F Series Front Leaf Springs , Ford F Series

Ford F Series Leaf Springs. REAR 43-571 3 (W)X24 (S.E.)X31-1/2 (L.E.) 4/1 Lvs 4/.307 1/.662 2,450 Lbs Capacity. Front and Rear Bushings INCLUDED. 3 (W)X25 (S.E.)X31-3/8 (L.E.) 4/1 Lvs 4/323 1/662 2,450 Lbs Capacity. Front and Rear Bushings INCLUDED. 3 (W)X25 (S.E.)X31-3/8 (L.E.) 6/1 Lvs 6/323 1/662 3,100 Lbs Capacity.

24 inch 2 Leaf Slipper Spring 500lb Boat Trailer Leaf Spring

24 inch 2 Leaf Slipper Spring 500lb Boat Trailer Leaf Spring- 24 inch Slipper Spring with 2 Leafs that is rated to 500 lbs of capacity per spring. This would bring a pair of these 24 inch Slipper Trailer Leaf Springs to 1000 pounds.

EZGO TXT Heavy Duty Rear Leaf Springs Kit - Golf Cart Tire

This rear leaf spring kit is perfect for carts with a rear seat kit or cargo box installed. Gives a soft factory ride under normal rider weight. Gives a soft factory ride under normal rider weight. Under heavy weight (extra passengers, cargo), the extra leafs kick in to help you handle extra payload.

LEAF SPRING vs. TORSION AXLE » Grandville Trailer

Leaf Spring vs. Torsion Leaf Spring Axle. Leaf Spring Axles are the most commonly used suspension systems in the trailer industry and come standard on almost every type of trailer. They are made up of a series of curved stacked springs (leaves) that are attached under or over the trailer’s axle. This is commonly called over-slung or under-slung.

Leaf Spring - Mathematical Optimization - Suspension (Vehicle)

In the present study, 75.6% Weight reduction of leaf spring is obtained at di er- of existing spring weight is reduced. This heavy reduc- ent stages. Namely, the initial design of steel leaf spring tion of leaf spring weight will improve the performance had a weight of 9.28 kg.

Heavy Truck and Trailer Leaf Springs - Stengel Bros Inc.

We have Camelback Mack leaf springs, front tapered leaf springs, and air ride suspension Z springs. Most truck springs that we offer are made in the USA to OEM specifications and standards. We ship our leaf springs anywhere by UPS, Fedex, truck freight, and ocean freight (actual shipping method is determined by weight, destination, and quantity).

How to Increase Payload Capacity of a Truck - General Spring

If a truck has a payload capacity of one ton, this means that all weight loaded onto the vehicle — from passengers, engine fluid and cargo — must not exceed 2,000 pounds. Therefore, if 350 pounds are taken up by the combined weight of the driver, the passenger and various engine fluids,

How To Pick The Right Spring Rate - Chevy High Performance

Feb 01, 2010  The difference between the two spring height figures is 2.44 inches, which yields a product of 1,220 when multiplied by the spring rate of 500 lb/in. When matched with a shock featuring 4.25 inches of travel, setting it up for a 50/50 cornering application requires the shock to collapse 2.13 inches (T) at ride height.

How-To: Going Fast With Leaf Spring Suspensions

Calvert Racing's split mono-leaf and CalTrac bars, like what Derek Putnam uses (and pictured here) are the choice modifications for many a leaf spring racer. The split mono-leaf springs are considerably lighter than the factory leaf springs to reduce unsprung weight, and you can choose a ride height, as well.

Toyota Leaf Springs, Replacement Toyota Leaf Spring

Popular spring replacements include Model 90-297HD the 3/1 Rear Leaf Spring for the 2005-2011 Toyota Tacoma. This replacement spring fits on the left or the right side and can be classified as a heavy duty spring as it offers 1,650 lbs of load support.

Boat Trailer Leaf Springs for all Brands and Sizes of Boat

Check out our Huge Selection of Trailer Leaf Springs for Boat Trailers. Many of these Leaf Springs are also perfectly suitable for most land trailers as well. Most Trailer Leaf Spring Sizes are not Brand specific, meaning one Specific Type and Size does not necessarily go on only one brand or type of trailer.

Heavy Duty Leaf Springs for all trucks and tractors

Click the heavy duty leaf spring part number or the standard spring number to find pricing, shipping costs, and to order online. Most Leaf Springs can be shipped out the same day of the order. We can also add leaves and modify leaf springs to meet your specific needs.

How-To: Going Fast With Leaf Spring Suspensions

The leaf spring suspension we see in many muscle cars is called a semi-elliptical leaf spring arrangemen t, meaning there’s one spring on each side and not two connected to each other to form a complete circle. Leaf springs actually date back to medieval times — that’s how old the technology is — but these days, trucks are the only late model vehicles on the road that still use them.

Corvette leaf spring - Wikipedia

As in a coil-spring suspension design, the FRP mono-leaf spring supports the weight of the vehicle. However, the FRP leaf springs differ from steel coils and traditional steel multi-leaf springs in a number of significant ways. The FRP plastic springs have 4.3–5.5 times the strain energy storage per weight, compared to steel.

Increase Load/Towing Capcity - Leaf Springs - Leaf Spring

Adding a leaf can give the average pickup an extra 700+ pounds in carrying capacity. Adding a leaf to your springs will raise your truck between .5 and 2 inches depending on your vehicle and can effect your ride to feel more rough or stiff.

Drag Racing Traction: Rear Suspension - Leaf Spring

Mar 12, 2015  Rise or Squat. You first must understand the basics. However, there is a point in horse-power-to-weight ratio that some cars with higher horsepower levels (800 to 1,000) need the front of the leaf spring mount to be lowered. Thirty years ago most full-bodied cars benefitted from a

Automotive Spring Rate Calculator - Wheel Rate Calculator

Examples include: Tire/wheel assembly; brake rotors and calipers (or drums and components); wheel bearings; steering knuckle; hanging weight of the control arm (or trailing arms on rear axles); differential and axle weight; 1/2 of the spring and shock absorber weights. Unsprung corner weight is

Leaf Spring Suspension Solutions - Made in the USA

Roadmaster Active Suspension engages progressively to maintain the leaf spring arch, and applies proportionately to weight that is added to the bed or hitch of the truck. This unique design significantly strengthens and improves the ability of the rear suspension to handle heavy loads, resulting in reduction of rear squat by up to 3-4 inches.

We Manufacture Leaf Springs - EATON Detroit Spring

These are terms that apply to all types of springs: leaf, coil, air, torsion – and they’re commonly misunderstood. Spring Rate is the amount of weight required to deflect a springs an inch. The lower the rate, the softer the spring. Load is simply the amount of weight on the spring.

LEAF SPRING Modification

LEAF SPRING Modification -- RS-104A. Beware from the start that this is a lesson in what NOT to do to a leaf spring. On 10 January 2010, someone who shall remain nameless wrote: "I tried something with the [too tall] aftermarket leaf springs resulting in lowered ride height (the rebound straps actually fit). I removed the U-bolts on one side

Cleaning and checking leaf springs - How a Car Works

The tips of the shorter leaf may dip into the surface of the leaf above it, and make a slight depression. The leaves then bind as they move against each other. A slight depression is acceptable, but the spring should be replaced if the depression exceeds a in. (3 mm).

Leaf Spring Troubleshooting Guide

1. Broken spring leaf. 1. Replace the spring assembly. 2. Alignment out of specification. 2. Refer to alignment specialized repair shop. 3. Worn steering parts. 3. Replace worn parts and have front end aligned. Vehicle bottoms out: 1. Vehicle is overloaded. 1. Reduce vehicle load. Upgrade to

375res weight-leaf spring issues

Mar 09, 2019  375res weight-leaf spring issues I have a 2019 Solitude 375res that has about 700 miles on it so far. I was checking the air pressure in the spare and noticed the leaf springs on the left (road/kitchen) side are flat and bent.

Amazon.com: Libra New Trailer Leaf Spring-5 Leaf Slipper

One New Trailer Leaf Spring-5 leaf slipper hook end 3,500lbs rated for 7,000 lbs trailer axle This is very commonly used standard spring for 7,000 lbs trailers in the market. We sold tens of thousands of this spring to major trailer and trailer axle manufacturers.

Nissan Light Duty Truck Leaf Springs, Leaf Spring Suspension

STANDARD DUTY REPLACEMENT - HEAVY DUTY REPLACEMENT TRUCK LEAF SPRINGS. Rear Leaf Springs, Front Leaf Springs. We Also Carry Leaf Spring Suspension Components.. Leaf Spring Shackles, Leaf Spring Hangers, Leaf Spring Bushings and more. Nissan leaf springs

How To Master Traction in Your Leaf Spring Car Part IV

Jul 05, 2016  Unlike a four-link car, which can be adjusted by way of the control arms, shock, and strut settings, a leaf spring suspension is adjusted in a different way. According to the experts, making adjustments to leaf spring cars is the same as for any other car, but the big change will be the way you deal with the back end.