Made from medical & food grade stainless steel, our 316 compression springs include standard passivation, adding additional strength and resistance to moisture and other outside forces.

The spring's natural frequency is another important consideration in dynamic loading environments. First, you must evaluate your system to determine its vibrational frequency. Then, you must compare this value to the spring's natural frequency. You may have resonance in the system if the two values are similar. Suppose a spring’s natural frequency is near the system's vibrational frequency. In such cases, your application may be vulnerable to premature failure due to amplified displacement and loading due to vibrational resonance. Add damping or isolation features to your application to mitigate this concern.

Ceramic ball bearings (also known as hybrid bearings) are the one component that’ll easily optimize the performance of your application. Hybrid bearings have ceramic (silicon nitride, Si3N4) balls and 52100 bearing steel rings.

This process is called removing set, presetting, or set removal and can be conducted at room or elevated temperatures. The loss of deflection from the free position to solid height by cold set removal should be at least 10%. If the set is less than this, controlling the spring’s free length is difficult. Ratios of stress greater than 1.3 lead to distortion and do not appreciably increase the load-carrying capability of the spring For torsion springs, the allowable torsion stresses with set removed are significantly higher than those that have not been preset.

However, the magnitude of loading over time is a critical factor that is sometimes overlooked at the design stage. Springs encounter two kinds of time-dependent application loads: dynamic and static loads. It is crucial to understand the differences and how they impact the performance of your spring in application.

Dynamic load

A static load is generally a fixed, unchanging load or force. It is applied very gradually and does not change in magnitude. A good way to visualize this load is to think of an automobile suspension when parked and not moving. The compression springs in the automobile’s suspension are compressed to absorb the car's weight, which is static and unchanging while the vehicle is parked.

In closing, set removal is a relatively costly secondary process that significantly increases the spring's energy storage capacity.

Please note: The possible increase of the speed depends on different factors, such as the allowed speed factor of the grease used, temperature and the concept of the bearing fittings. Therefore, we don’t publish a standard additional factor for the limiting speed, but we offer an individual check of the construction. For contact, please contact us.

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No built-in ball bearing support. Has no RPM limits & Supports high torque needs: 609 to 14,060 Nm. Bore (ID) sizes: 38.09 to 220 mm (1.499 to 8.66 in)

Century Spring is a quality-first manufacturer with years of experience and innovation in manufacturing stock and custom springs for the most challenging static and dynamic load environments.

In conclusion, most springs designed to recommended stress levels will exceed the indicated lives. However, detailed information on material, manufacturing method, and operating conditions is required to fully quantify a spring’s reliability in application.

Static loadingexamples

We know that not every application requires super, high-precision bearings. We stock other industrial parts from quality brands.

Staticload vs dynamic load

The maximum allowable spring design stresses for fatigue applications should be calculated using the correction factors shown for typical spring materials in the table below:

We proudly boast an in-house team of spring design experts ready to partner with you today to help you choose the best spring for your application under static and dynamic load profiles. We are committed to minimizing total development time and passing the time savings to you as reduced procurement lead times.

No built-in ball bearing support. Good for large orders & low to high torque needs: 1 to 2673 Nm. Bore (ID) sizes: 2 to 240 mm (0.078 to 9.448 in)

Static loadinginjury

Winter Holiday ClosureCentury Spring will be closed Tuesday, December 24th and Wednesday, December 25th in observance of the Christmas holiday. We will response to all messages as soon as possible upon our return.

Bore Diameter. 0.3750 · Outer Diameter. 0.8125 · Ball Width. 0.406 · Race Width. 0.312 · Ball Shoulder Diameter. 0.516 · Ball Diameter. 0.656 · Chamfer. 0.032.

It is important to note that because yielding has occurred during this operation, the stress is relatively uniform around the wire cross-section. As stated previously, it can be calculated using the stress correction factor.

It’s important to understand the difference between static and dynamic loads in spring design and manufacturing across every industry where mechanical springs are employed. Extension, compression, and torsion springs are all designed to absorb mechanical loads in either tension, compression, or torsion directions, respectively.

Pay careful attention to stress concentrations and select a spring that minimizes these as much as possible. You should also carefully evaluate the end type needed for your spring and choose one that does not feature sharp corners or bends if they can be avoided.

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For springs that do not contain beneficial residual stresses induced by set removal, maximum allowable torsional stress values are from 35 to 50% of the tensile strength. You should use a stress correction factor to calculate spring stress before set removal. If the calculated stress at solid is greater than the indicated percentage of tensile strength, the spring will take a permanent set when deflected to solid. The amount of set is a function of the calculated stress at the spring’s solid height that exceeds the indicated percent of tensile strength.

This heavy-duty clutch (aka a hold-back clutch) is good for high torque operations and ensures motion freezes in place. Bore (ID) sizes: 15 to 40 mm. (0.59 to 1.73 in)

The best protection for your bearing. Easy to install with a simple “drop-in” next to your bearing. No added space needed. CF seals offer 100% sealing efficiency against splashing liquids.

Can’t find what you need in stock? We can custom-manufacture per your exact specification. With our state-of-the-art technology, we can custom manufacture springs and wire forms with precision tolerances.

We stock hybrid ceramic ball angular contact bearings and hybrid ceramic radial bearings. All our bearings are manufactured in GMN Germany and stocked in Houston, Texas.

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What isstatic loadingin the body

Made from medical & food grade stainless steel, our 316 compression springs include standard passivation, adding additional strength and resistance to moisture and other outside forces.

The cost of the replacement wheel bearing assembly itself can range from $100 to $800 or more, depending on the quality and brand.

Includes built-in ball bearing support. Supports MEDIUM loads & low to medium torque capacity: 53 to 267 Nm. Bore (ID) sizes: 17 to 40 mm (0.669 to 1.57 in)

Static loadingback injury

Fatigue Resistance (Fatigue Strength) is a material property that determines how well a material endures cyclic loading conditions.

We are an ISO 9001-certified spring manufacturer, proudly producing the highest-quality springs that deliver unrivaled system performance even in the most demanding applications and environments. Our state-of-the-art manufacturing capabilities have positioned us to offer unmatched service to industries that need large volumes of customized spring designs in accelerated development programs.

Static loadingErgonomics

Made from medical & food grade stainless steel, our 316 compression springs include standard passivation, adding additional strength and resistance to moisture and other outside forces.

Admittedly, spring selection becomes more complex in dynamic loading environments. However, once you understand your system’s dynamic load profile and frequency, you can use these parameters to shop for springs.

A dedicated line of air handling products designed for the most demanding HVAC applications ... Bearings for HVAC Fans & Blowers add.

Can’t find what you need in stock? We can custom-manufacture per your exact specification. With our state-of-the-art technology, we can custom manufacture springs and wire forms with precision tolerances.

Staticload and dynamic load examples

A hybrid bearing has ball material made of ceramic, silicon nitride (Si3N4) and 52100 bearing steel rings. This type of precision bearing is an excellent choice for advanced machines that require precision.

We offer rapid turnaround, shipping, and delivery on over 40,000+ in-stock designs available to ship today, and all of our springs are always made in the USA.

202383 — In fact, the record has been broken twice within two months. In June 2023, GWH252-16MW, with a rotor diameter of 252m (827 feet), manufactured ...

Designed with grooves in the outer ring to offer more protection (than our L-type seal) against contamination and direct spray liquids. Liquid gets pushed out through outer grooves when in rotation.

A full grasp of the spring’s operational environment, frequency of operation, speed of operation, and permissible levels of stress relaxation is required to make the best choice between cost and reliability.

Ball bearings are mechanical components that are used to reduce friction between rotating parts. They are commonly found in various applications.

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Fatigue Life is the number of dynamic loading cycles a material can sustain before fracturing. The velocity of the end coils is low compared with the natural frequency. To select the optimum stress level, it is necessary to balance spring cost vs. reliability. Reducing operational stresses increases spring reliability as well as cost.

To increase the load-carrying ability of springs in static applications, it is common practice to make the spring longer than its required free length. A secondary operation compresses the spring to its solid height. This operation causes the spring to “set” to the desired final length and induces favorable residual stresses.

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Can’t find what you need in stock? We can custom-manufacture per your exact specification. With our state-of-the-art technology, we can custom manufacture springs and wire forms with precision tolerances.

For static applications, the material's yield strength or stress relaxation resistance limits a spring's load-carrying ability. In static applications, the spring is required to operate for a limited number of cycles with a low end-coil velocity, which precludes high stresses in the spring due to surging or impact conditions.

Additionally, because the maximum stress occurs at the spring wire's surface, any surface defects, such as pits or seams, severely reduce fatigue life. Shot Peening improves fatigue life and minimizes the harmful effects of surface defects, but it does not remove them.

Hybrid precision bearings have been shown to increase the lifespan of your application by up to 40% over a conventional steel bearing.

The attainable speed depends on the thermal conditions in the bearing. A hybrid bearing creates less friction and generates less power loss, therefore the speed limit is increased.

Conversely, adynamic load is a load that changes in magnitude over time. Sometimes, a dynamic load changes many times per second depending on the intended application. Using an automobile suspension as an example, when the car begins to drive, the dynamic load on the spring is the portion of the load that the spring sees when traversing uneven surfaces. The suspension must absorb the displacement of the tire or link arm. From the spring design and selection perspective, the dynamic load the suspension springs absorb during driving differs significantly from the static loads on the springs while the car is parked.

Our GMN Gap Seals are plastic and a great choice for washdown applications, such as food conveyors and food manufacturing facilities

Includes built-in ball bearing support. Supports HEAVY loads & has a high torque capacity: 53 to 588 Nm. Bore (ID) sizes: 10 to 60 mm (0.393 to 2.362 in)