Vehicle Suspension Springs Manufacturer
Over the years we have given a dedicated service in design and manufacturing springs for vehicle suspension. We can also assist you in the redesign of your spring, material and coating selection to improve the performance of your suspension system.
Our engineers have hands-on experience in the manufacturing of leaf springs, torsion bars or a combination of both with good shock absorbing capacity.
We can also do custom spring design that meets all your design needs. Coiling Technologies, Inc. have designed and manufactured hundreds of thousands of military suspension springs for numerous U.S. government vehicles as well as for U.S. allies around the world.
Some of the suspension springs we have designed and produced include
- Military Vehicle Suspension Springs
- Prototype and OEM Automotive Springs
- High-Performance Springs for Lifting and Lowering a vehicle
- Racing Suspension Springs (All forms of Motorsport)
- Automotive Aftermarket Springs
- Recreational Vehicle Springs
- Emergency Vehicle Springs
Contact us, for further information and assistance with any vehicle suspension solution needs.
Vehicle Suspension Springs FAQs
What kinds of vehicle suspension springs does Coiling Technologies design and build?
Coiling Technologies has designed and produced military vehicle suspension springs, prototype and OEM automotive springs, high performance springs for lifting and lowering a vehicle, racing suspension springs across all forms of motorsport, automotive aftermarket springs, recreational vehicle springs, and emergency vehicle springs. The engineering team has hands on experience manufacturing leaf springs, torsion bars, and combinations of both with good shock absorbing capacity. Custom design work is available where no existing part fits the vehicle, and the team can assist with redesign of a spring, its material, and its coating to improve how the suspension system performs.
What is Coiling Technologies experience with military vehicle suspension springs?
Coiling Technologies has designed and manufactured hundreds of thousands of military suspension springs for numerous U.S. government vehicles as well as for U.S. allies around the world, and military suspension springs are a specialty called out by the company. The customer base includes the US Military and other government agencies alongside Fortune 500 companies and the automotive aftermarket. Quality sits under ISO 9001:2015 certification, audited regularly, with products analyzed before and during production against customer specifications. If your program carries flow down requirements beyond that, raise them at quote time so applicable specifications and documentation can be confirmed.
How does spring rate relate to ride height and load?
Rate is the load required per inch of deflection, and ride height falls out of rate, free length, and the static corner weight the spring carries. Change rate without changing free length and the vehicle sits lower under the same load. Change free length without changing rate and ride height moves while handling stays roughly where it was. That is why a suspension spring specification needs free length, rate, and load at installed or design height together. Coiling Technologies can work from those three numbers, or from vehicle weight and target ride height if the spring itself is not yet defined.
When is a progressive rate spring better than a linear rate spring?
A linear rate spring gives predictable behavior and is easier to tune around, which is why most racing and OEM applications start there. A progressive rate spring, made by varying pitch, coil diameter, or wire diameter along the spring, stays soft through the first part of travel and stiffens as it compresses. That helps vehicles with a wide load range, such as a pickup, an emergency vehicle, or a recreational vehicle that runs empty one day and loaded the next, since ride quality survives at light load while bottoming resistance holds at full load. The tradeoff is a less predictable rate curve.
Why do suspension springs sag over service life?
Sag is set, meaning permanent deformation from operating too near the material's elastic limit under sustained and repeated load. Heat, corrosion pitting, and coil clash all accelerate it. Set is controlled by choosing the right alloy and hardness, keeping design stress inside the material's limits at full compression, and pre setting the spring so the small amount of unavoidable relaxation happens in the plant instead of in the vehicle. Shot peening helps as well by resisting the surface fatigue that accompanies high stress designs. A spring that sags early is usually a stress level problem rather than a material defect.
What is needed to reproduce an obsolete suspension spring?
A physical sample is the best starting point, since geometry can then be measured directly. Useful additions are free length, wire diameter, outside diameter, total and active coil count, end configuration, and any load and travel data from the vehicle. Load at ride height matters more than coil count, because two springs with identical geometry and different heat treatment behave differently. Note the failure mode if the original broke or sagged, since a reverse engineered copy of a part that failed in service repeats the failure. Coiling Technologies can also develop a full design from performance requirements alone.
How does in house heat treating, peening, and coating affect a suspension spring program?
Heat treatment sets the mechanical properties that rate and set resistance depend on, shot peening sets fatigue life, and coating decides how the spring survives road salt and stone chipping. Coiling Technologies performs heat treating, shot peen, powder coating, and non-destructive testing in the Houston facility under one ISO 9001:2015 quality management system, without outsourcing those steps. For a production suspension program that removes the lot to lot variation which appears when heat treatment moves between vendors, and it keeps traceability from finished spring back to incoming raw material in a single place.
