What is a folding spring bolt and where is it used?

A folding spring bolt consists of a bolt to which a spring is riveted, and is available in sizes from 4x8 up to 20x40, each suitable for the clevis according to DIN 71752 / DIN ISO 8140. Together with the clevis, the folding spring bolt forms a clevis joint and allows for quick and tool-free assembly or disassembly of the joint.

What distinguishes folding spring bolts in comparison to traditional bolts?

Folding spring bolts are distinguished by their unique design that allows for quick locking and unlocking, combined with a spring-loaded mechanism for securing. These features facilitate assembly, enhance safety and reliability, and make them ideal for applications that prefer easy disassembly.

Why is the proper installation of folding spring bolts so important?

A proper installation is crucial to ensure the robustness, safety, and longevity of the connection. Proper handling and adherence to the specific installation instructions ensure that the folding spring bolt is correctly positioned and fastened to guarantee reliable operation.

How should folding spring bolts be maintained to ensure their reliability and performance?

Effective maintenance strategies include routine inspections for wear or corrosion, cleaning of dirt and debris, proper lubrication of moving parts, and consideration of the operating environment. These practices extend the lifespan of the folding spring bolts and ensure their proper functioning. These questions and answers provide a basic overview of important aspects related to folding spring bolts, their selection, installation, and maintenance.

How can folding spring bolts contribute to the optimization of industrial processes?

By facilitating rapid and secure connection changes, the folding spring bolt shortens assembly, disassembly, and maintenance times. Its reliability and ease of use enhance the efficiency and flexibility of production processes and reduce potential downtime.

In which industries are folding spring bolts typically used?

Folding spring bolts are used in a variety of industries, including mechanical engineering, agricultural technology, special vehicle construction, and the construction industry. Their versatility and reliability make them ideal for a wide range of applications.

What are the main materials from which folding spring bolts are made?

Folding spring bolts are manufactured by us from steel and stainless steel. The choice of material depends on the required strength, corrosion resistance, and application area. Stainless steel is preferred for applications that require high corrosion resistance.

How do temperature fluctuations affect the performance of folding spring bolts?

Temperature fluctuations can affect the mechanical properties of folding spring bolts, especially under extreme conditions. At very low temperatures, materials can become brittle; at high temperatures, they can expand.

What safety features does a folding spring bolt offer?

Folding spring bolts provide a secure hold that prevents unintentional loosening. This can be especially important in applications where vibrations or movements increase the risk of accidental loosening.

Can folding spring bolts be specially treated for outdoor applications to resist corrosion?

Yes, folding spring bolts can be optimized for outdoor use through various surface treatments such as galvanizing, phosphating, and/or coating with corrosion protection agents. These treatments enhance resistance to weather conditions and corrosion.

How to choose the right folding spring bolt for a specific application?

The selection of the right folding spring bolt requires an understanding of the type, material, and dimensions necessary for the specific application. Key factors include load capacity, corrosion resistance, size, and compatibility with clevises to ensure secure fastening and long-term reliability.

What are the disadvantages of using folding spring bolts?

Folding spring bolts cannot be made entirely from stainless steel. While the bolt itself is made from stainless steel, the spring is made from spring band steel. This can lead to complications in certain applications where a complete production in stainless steel is required. Another disadvantage is that folding spring bolts are not ideal for every installation situation. Especially in environments where available space is limited, the use of these bolts can become problematic as they require a certain amount of space.

What is the difference between a folding spring bolt and a folding spring bolt with groove?

The main difference between a folding spring bolt and a folding spring bolt with groove lies in the specific design of the bolt, to which a special groove has been added to the basic design. This groove is positioned along the shaft of the bolt to provide higher security and precision in guiding a potential connecting part.

mbo Osswald produces folding spring bolts, ES-bolts, suitable for clevis, clevises, according to DIN 71752, DIN ISO 8140, CETOP RP102P. We manufacture these of steel, 1.0718 resp. the spring of spring steel.

Folding spring bolt FKB 20x40 Stainless steel

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Unfortunately, there is a minimum order volume of [[minsurface]] units due to the coating used. Alternatively, you can receive the products uncoated (bright, lightly oiled) or in stainless steel (1.4305, 1.4301 or 1.4404) even as a one-off part:

Undercut steel (1.0715/1.0718) Stainless steel (1.4305) Stainless steel A2 (1.4301) Stainless steel A4 (1.4404)

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Mounting and removal is possible without tools!

Article no.

10 01 0020 8001/000

Identifier

Folding spring bolt (suitable for clevises)

Size

FKB 20x40

Material group

Stainless steel

Surface

bolt: bright; spring: electr. galvanised white

Suitable for clevis

G 20x40

d1 h11

87,5

l1 Tolerance

≈

71,5

l2 Tolerance

≈

l3 ˜

Mass (kg) per 100 pieces

Material

Bolt: stainless steel 1.4305 (X8CrNiS18-9)

Spring: spring band steel C60 up to Ck75 hardened and annealed to approx. 430-500 HV, electr. galvanised white