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Wave springs developed to order: We work closely with you in the development of our wave springs for the intended application. Where necessary, we are pleased to assist you with processes ranging from dimensioning to verification to production. With the help of our specialist expertise, we will find the right solution for you together. We produce both single-turn and multi-turn designs with wavy and straight surfaces.

Since the development of coil springs in turret tooling, engineers have been challenged to increase the productivity of turret presses even further. In a traditional press, the option of material type and material thickness is limited by the coil springs inability to produce a high force in a short linear distance. When this performance is necessary, coil springs will have a negative effect on the quality of the formed product and efficiency of the manufacturing process. SPIROL® Disc Springs are the solution to form thick materials, large extrusions, and more complex designs. When stacked in series, they are capable of providing a greater, more consistent stripping force than coil springs and require less space. They have become an instrumental component in the advancement of turret punch press tooling. Visit www.SPIROL.com to learn more!

SPIROL offers Disc Springs pre-stacked in custom configurations (greased or ungreased) packaged in shrink wrap with a perforated tab for ease of insertion into the assembly. The Pre-Stacked Disc Springs are delivered intact which saves time, mistake-proofs the assembly process, and eliminates the mess associated with greasing the stack. Have an existing Pre-Stacked Disc Springs Application? If you have an existing Disc Spring Stack that you would like quoted, please Request a Quote. We are here to help!

SPIROL offers a line of austenitic stainless steel Disc Springs in diameters ranging from Ø8mm to Ø71mm. Austenitic stainless steel is typically used for static and low cycle applications that require a heightened level of corrosion resistance. It withstands fresh water and atmospheric marine conditions very well, and is suitable for many other industrial conditions including acidic environments. This material will continue to work harden with use so cycle life is limited, but creep resistance is good. SPIROL supplies both single Disc Springs as well as Pre-Stacked Disc Springs in custom configurations, packaged in shrink wrap with a perforated tab for easy of assembly.

The mechanical back-up design uses SPIROL® Disc Springs. Under normal circumstances, the hydraulic system holds a constant pressure on Disc Springs stacked in series. If pressure fails to be maintained, the stack of Disc Springs decompresses to actuate the braking mechanism. A compression spring or wave spring is not capable of providing the force required (in the space available) to actuate the brakes. The reliability of this safety system is dependent on the consistent performance of Disc Springs. In this critical application, the Disc Spring’s performance and level of predictability improves product quality and ensures overall safety. SPIROL® Disc Springs have a high capacity to consistently store releasable mechanical energy. Visit www.SPRIOL.com to learn more!

DEWALT’s lead design engineer for drills was tasked with designing a high power right angle drill that is lightweight, compact, and portable. The goal with the design was to maximize performance while minimizing the size of the tool. The design would incorporate a mechanical clutch built to limit maximum torque output to 70 ft-lbs. Absent the clutch, with the huge gear reduction of 75:1, the drill would be capable of producing a lock rotor torque at the spindle of 175 ft-lbs, transmitted directly to the operator of the tool. It was determined early on that the clutching thrust required in the space available could only be achieved by a Disc Spring design. Compared to conventional coil springs, Disc Springs offer a higher load capacity in less space. Additionally, longevity and reliability is a high measure of quality for professional tools used on a daily basis. The life and performance warranty of the tool was reliant on the Disc Spring design. Visit SPIROL.

Disc Springs are conically-shaped precision components designed to be axially loaded. Disc Springs are often incorrectly referred to as belleville disc springs, belleville springs, belleville washers or simply conical washers. SPIROL offers the full range of DIN EN 16983 (formerly DIN 2093) Group 1 and 2 Disc Springs in Series A, B, and C. In addition to the DIN specified sizes, SPIROL stocks its own standard sizes with outside diameters ranging from Ø8mm to Ø200mm. SPIROL Standard Disc Springs were designed around the standardized calculations of DIN EN 16984 (formerly DIN 2092), and meet all material, dimensional tolerance, and quality specifications as laid out in DIN EN 16983 (formerly DIN 2093) yet offer an expansion in the diameter and thickness combinations that are not included in the DIN standard. Standard materials include carbon steel and alloy steel, both finished with a protective coating of zinc phosphate and oil.

To ensure safe transport and enable an easy handover of the products during later industrial processes and assembly, we ship our springs and sub-assemblies in special packaging. Any conceivable special packaging is adapted precisely to the product in question, e.g. blister or polyethylene packaging. Tube packaging: Compression springs are transported in tube packaging. Tube packaging ensures that they can be inserted without problems, down to the last spring. Sub-assemblies, bent strip parts and laser-generated samples are transported in blister or polyethylene packaging to protect them during transport and storage. Modifying specific extraction mechanisms: We would also be pleased to assist you with our expertise regarding the modification of specific extraction mechanisms. This eliminates downtime of highly complex assembly equipment caused by springs getting caught up in one another.

Customised production to your specifications: We work very closely with you when it comes to producing torsion springs. Torsion springs are produced in accordance with your specifications based on drawings, prototypes or sketches. We manage the development process of the spring until it is ready for serial production. We produce torsion springs with wire diameters of 0.20 to 4.00 mm, with or without torque testing. Wire coatings: Galvanised, ZnAl-plated, Red-coated, Nickel-plated, Polished nickel, Phosphated, Brass-plated,Silver-plated.

Special eye forms for extension springs: There is an increasing number of potential applications for trumpet-end springs and mounting aids for extension springs – a solution that we have been addressing for many years now. We produce our range of extension springs with German and British standard eyes with wire diameters of 0.25 mm to 4.00 mm. We can also produce special-purpose eyes and other eye forms as needed according to alternative specifications with wire diameters of 0.20 to 4.00 mm.

Production to order – also with special-purpose materials as required: We only produce in accordance with customer specifications. Compression springs can assume a wide variety of designs and forms. Our production facilities include compression springs with wire thicknesses in the range of 0.30 to 3.00 mm with abraded ends and in the range of 0.10 to 4.00 mm with unabraded ends. Even extremely strict tolerances regarding length and strength are adhered to in our compression spring production facility. Special-purpose materials that meet specific requirements can also be integrated into production without any problems. Wire materials: All standard spring steel wires in accordance with EN 10270. Non-ferrous wires made of copper, brass and bronze. Special alloys such as: Hasteloy, CuNi44, NbZr1, TaW2. Other materials on request.

SPIROL Standard Slotted Spring Pins SPIROL Standard Slotted Spring Pins have a slot width narrower than the wall thickness and thus do not nest or interlock. This feature, combined with a smaller expanded (pre-insertion) diameter, results in a number of advantages for SPIROL Standard Slotted Pins compared to ISO 8752 pins including: • Lower insertion force and smoother insertion. • Rounder pins, which in turn results in better conformance of the pin to the hole wall and eliminates the edge of the slot damaging the hole during insertion. • Lower stress in the spine of the installed pin. This results in longer pin life in shock or fatigue applications. • Ability to use automatic vibratory feeding of pins for installation without interlocking. • Plating of pins for additional corrosion resistance or appearance without “touch marks” or the bonding of nested pins. Please visit www.SPIROL.com to learn more!

While Coiled Spring Pins are extremely versatile self-retaining fasteners that can be used for many different functions, SPIROL has designed several series of Coiled Pins to meet the nuances and performance requirements of some particular niche applications. These Coiled Spring Pins are variations of our standard product either manufactured from special material, have a special finish or undergo specific processing to meet performance, corrosion, compatibility and assembly requirements for the specific application. These pre-designed application-specific series of Coiled Pins help companies shorten the design cycle to confidently launch their product quickly to their market with a pinning solution that has been tested and proven within their assembly.

SPIROL invented the Coiled Spring Pin in 1948. Truly an engineered fasteners, the Coiled Pin is available in three duties, light, standard and heavy, to enable the designer to choose from the optimum combination of strength, flexibility and diameter to suit different host materials and application requirements. Their shock absorbing design dampens forces and vibration to prevent hole damage and prolong assembly life. Light Duty Coiled Spring Pins are generally recommended for soft, brittle or thin materials such as plastics, aluminium, die castings, ceramics, and where holes are located close to an edge of the assembly. In situations not subjected to significant loads, such as when used purely for alignment or as an axle, light duty Coiled Pins are often used because of easy installation resulting from lower insertion force.

SPIROL's Series 100 Key Fob Coiled Spring Pins were designed specifically to secure the key to the fob. The advantages of these high-performance automotive key fob security pins are as follows: Increased productivity, easy and trouble-free assembly, and simplified logistics.

In addition to SPIROL Standard Metric Slotted Spring Pins, SPIROL offers a line of ISO 8752 Slotted Pins to meet market demand for these pins. SPIROL offers Slotted Spring Pins manufactured to the ISO 8752 specification in diameters ranging from 2mm to 12mm in both high carbon steel and austenitic stainless steel in plain finish. ISO 8752 Slotted Pins are not available with supplemental coatings such as zinc plating or passivation due to their propensity to interlock during the finishing process.

With laser generation, components are built up layer by layer from powdered metallic materials used in serial production such as 1.2709 steel or 1.4543 steel. Thanks to state-of-the-art technology, this enables us to transfer your computer-generated 3D/CAD models reliably over to their physical form. Here, thin coats of the powder materials are applied to a base object before being melted using a laser into the desired contour. This process is continued on a revolving basis until the workpiece is complete with the final geometric form and the relevant functional properties. Incidentally, we reclaim excess powder material during this process and use all of it for later productions again. Our services in sample development also include technical springs, which we produce in small batches for your sample application. Traditional sample development services are a new addition to our portfolio. Here, we produce a small-scale series of your bent strip parts from original materials.

SPIROL’s Dowel Bushings and Spring Dowels are designed to maintain alignment and are used to locate components with respect to each other. These roll-formed, hollow Alignment Dowels have lead-in chamfers that facilitate insertion into the holes of both mating components. The Dowel's flexibility enables absorption of wide hole tolerances and the staggered seam prevents interlocking. Dowel Bushings are designed with an inside diameter clearance that allows the passage of a bolt for fastening, thereby eliminating the need to drill an additional hole. They are also heat treated to isolate the bolt from shear loads.

SPIROL manufactures Coiled Spring Pins out of 316 stainless steel to meet specific application requirements. Type 316 stainless steel is similar to 302/304 stainless steel with a slightly higher nickel content and the addition of molybdenum. The molybdenum content increases the chemical resistance of this alloy greatly. 316 exhibits superior pitting resistance against sea water, acetic acid vapors, chlorides, sodium and calcium brines, hypochlorite solutions, phosphoric acid, and the sulfite liquors and sulfurous acids used in the paper and pulp industry. This alloy is also austenitic, non-magnetic and non-hardenable using conventional methods. 316 stainless steel has better mechanical properties at elevated temperatures than 302/304 and offers excellent mechanical integrity at subzero temperatures. Typical applications for SPIROL's 316 Stainless Steel Coiled Pins include the following: marine, processing equipment, industrial, oil and gas and medical.

SPIROL's Series 600 Superflex Coiled Pin has a loosely wrapped outer coil and a diameter at 90° to the seam equal to the hole size to provide a low insertion force and enhanced flexibility after insertion. The Superflex Pin eliminates insertion problems associated with hardened holes with sharp edges. A Superflex Coiled Pin is not distorted during insertion and maintains its straightness. One example of a great application for the Superflex Pin is when the pin is inserted into a shaft with both ends exposed for engagement into a slotted clutch component.

The Series 500 Extra Light Duty Coiled Pins were specifically designed for use in soft or fragile materials. The 1½ coil formation ensures that the radial force exerted against the hole wall does not exceed the strength of the hole material to prevent deformation. These pins are also an economical solution where pin strength is not a major design consideration. Typical applications for Series 500 Extra Light Duty Pins include: hinge pins in plastic or ceramic assemblies, alignment pins, and fastening applications where the hole is close to an edge of an assembly component.

You can rely on SPIROL to be a design partner that helps solve unique problems. Because we supply many customers with similar products in similar industries, we are able to meet most needs with our standard products at no additional cost. When the solution falls outside the normal requirements, we have the expertise and engineering personnel to solve those problems. By working with SPIROL in the design stage of your project, we will develop a solution that lowers your overall product cost, improves product quality, increases the robustness of your manufacturing process, and gets you to market faster. There are a number of common special Coiled Spring Pins that SPIROL has designed over the years to meet specific performance requirements. This includes making Coiled Pins from special materials such as 316 stainless steel, beryllium copper, and Inconel, or designing Coiled Pins to meet unique application requirements resulting in custom diameters, custom lengths, special features, etc.

SPIROL's Series 880 Coiled Spring Pin was designed specifically for use as the hinge pin for PC board card lock and ejector clip mechanisms. The quality of the hinge is unsurpassed by other fastening methods due to the low insertion force and compression of the pin during and after installation. As with all Coiled Spring Pins, the Series 880 hinge pin for PC board card locks and ejector clips is self-retaining, and thus no secondary processes are required for retention. The Coiled Pin's uniform radial spring force results in a controlled hinge movement that remains consistent throughout the life of the assembly.

The Series 550 Cosmetic Coiled Pin was designed specifically for cosmetic cases to ensure the perfect balance of strength and flexibility. The 1-1/2 coil construction ensures that the Cosmetic Coiled Pin exerts sufficient radial force to achieve the long-term desired swing torque while protecting the plastic from excessive stresses. The use of SPIROL Series 550 Cosmetic Coiled Pin will simplify your design and manufacturing process. Uniform radial spring force results in controlled hinge movement and a hinge quality that remains consistent over time. Controlled hinge movement is achieved with wider tolerances and lower moulding costs than when a Solid Pin or cut wire is used. Finally, low insertion force and compression of the pin during installation minimises hinge stress and scrap. The net result is the prolonged useful life of the assembly.

SPIROL's Series 102 Coiled Spring Pins were designed specifically for use in automotive transmission assemblies. These transmission pins are available in standard and heavy duty to enable the designer to choose the optimum combination of strength, flexibility and diameter to suit different host materials and application requirements. All Series 102 transmission pins are 100% dimensionally controlled for consistency during assembly. Additional advantages include: • Absorbs shock and vibration • Non-interlocking • Symmetrical • Easy, trouble free assembly • Ideal for automatic installation • Global supply

SPIROL's Series 101 Headrest Coiled Spring Pins were designed specifically for use in automotive headrest assemblies. The advantages of SPIROL's headrest pins are as follows: • Absorbs shock and vibration • Increased productivity • 100% dimensional control • Symmetrical • Non-interlocking • Accommodates wide hole tolerances • Easy to install • Simplified logistics • Global supply

SPIROL’s heavy duty & fatigue resistant Coiled Spring Pins are available in diameters ranging from 1.5mm (.062") up to 20mm (.750"). Standard materials include high carbon steel, 302/304 nickel (austenitic) stainless steel, and 420 chrome (martensitic) stainless steel. Diameters larger than 12mm (.500") are available in 6150 alloy steel. SPIROL invented the Coiled Spring Pin in 1948. Coiled Pins are available in light duty, standard duty and heavy duty to match the required strength and flexibility for each application. A pin too strong for the applied load will not flex and may damage the hole. A pin that is too flexible may fatigue prematurely within the assembly. The Coiled Pin with the optimal balance of strength, flexibility and diameter will result in the prolonged useful life of the assembly.

The Coiled Spring Pin was invented by SPIROL in 1948. SPIROL offers Coiled Pins in three duties, light, standard and heavy, to provide a variety of combinations of strength, flexibility and diameters to accommodate different host materials and applications. Standard duty (sometimes called "medium" duty) Coiled Spring Pins are generally recommended for use in nonferrous and mild steel assemblies and provide the optimum combination of strength and flexibility in these materials. Standard duty Coiled Pins are also preferred in hardened components when there is enough space to accommodate the larger diameter to withstand the applied force because of their ability to absorb shock and vibration. SPIROL's standard duty Coiled Spring Pins are offered in both metric (conforms to ISO 8750 and ASME B18.8.3M) and inch (conforms to ASME B18.8.2) sizes.

The COMPENSER® of the DC-series is an ideal hydraulic shock reducing element especially for the application field of storage technology (storage and retrieval machines). As a doubleacting buffer, this industrial shock absorber can be used in a spacesaving manner due to its design and can be actuated alternately from both sides. The constructive design and function corresponds to the C-Type. Furthermore, due to its low reset force, it can easily be pressed in at creep speed during operation. As optional equipment PU caps as inserts for the impact cap for the reduction of impact noise and a monitoring of the piston rod‘s position (by either magnetic or inductive sensors) are available. If only a slight increase of reset force of the piston rod over the entire stroke is desired, an additional external accumulator can be fitted to the cylinder to increase the gas volume of the gas spring. Hence the reset force decreases in retracted state.