Gardner Heavy Duty Extension Springs offer large loads in low cycling applications. Available in MBHD (Zinc Plated) Carbon Steel and 301 Stainless Steel. (read more)

Springs can fail or break for a variety of reasons, some of the more common of which are:

• Over stressing the part (extending or compressing it beyond design recommendations).
• Excessive cycling.
• Exceeding the recommended temperature for a given material.
• Using a part in a manner inconsistent with its design limitations.
• Exposing the....

Stainless Steel becomes magnetic due to cold working in the manufacturing process. Stainless Steel springs are slightly less magnetic than identically sized Carbon Steel counterparts

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For demanding applications where reliability is essential. (read more)

Belleville Disc Springs (conical disc springs) are ideal for applications where a large load is required in a small space. Belleville washers are a unique type of compression spring. These springs provide high load capabilities in limited space, and through variations in stacking they can be adjusted to provide either larger deflections or loads or both. Deceptively small in size, these... (read more)

Gardner precision compression springs are ideal for applications where reliability is essential. The ends are closed and ground. Gardner Spring stocks an extensive line of music wire, 302 and 316 Stainless. (read more)

Finger Springs are used to preload ball bearings and to reduce vibration in precision hard drive assemblies and other applications where light to medium loads are needed in a small space. Can be used at high speeds. Finger springs reduce noise and end play and do not increase in diameter during loading.

Contact points are equal to the number of fingers. Finger height is app... (read more)

These are the most common types of springs, and the measurements/speciifations needed to match a customer’s part with a stock item. These dimensions are also necessary for us to make a custom part if a stock size is not available.

• Carbon Steel
• Stainless Steel
• MBHD (“plain” carbon)
• 300 Series (301/302/304/313)<.....

For demanding applications where reliability is essential. Comprehensive selection of sizes in Music Wire and Type 302 Stainless Steel manufactured to rigid standards under strict tolerances. Music Wire parts are Zinc Plated, Stainless Steel plain; ends are closed and ground. High Carbon Steel Music Wire (ASTM A228) parts are able to be cycled repeatedly and can operate at up to 250°... (read more)

Stresses in Compression Springs

Compression springs, pivotal in myriad applications, are subjected to various stresses during operation. Understanding these stresses is paramount for efficient spring design, selection, and longevity. This white paper provides an overview of stresses in compression springs, shedding light on key factors, calculations, and implications.
1. Intr... (read more)

White Paper: A Study on Different Hook Types for Extension Springs (read more)

Benefits and Uses of Extension Springs

Abstract

This white paper explores the myriad benefits and diverse applications of extension springs, which have established themselves as integral components in numerous devices and machines. The mechanics, advantages, and typical use cases of extension springs are analyzed to provide a comprehensive understanding of the... (read more)

Gardner Ultra Precision Extension Springs are made to strict tolerances from high-grade materials. Tight quality control is maintained throughout the manufacturing process. Ends are full twist loops. Ultra-Precision Extension Springs have an excellent fatigue life and many sizes are ideal for dynamic or heavy cycle applications. Other uses include maintenance, prototyping, and equipment... (read more)

Designed in a conical shape so that each coil compresses within the other, Conical Compression Springs are able to achieve a much smaller solid height than ordinary compression springs. Ends are squared, not ground. Material is 302 Stainless Steel Conical Compression Springs ASTM A313 are able perform in high temperature environments, up to 500°F. Solid height is approximataly equal... (read more)

Torsion springs offer resistance to externally applied torque as the ends are rotated in angular deflection. Commonly used over an arbor or mandrel for support. Available in left or right hand wound in a variety of Deflection Angles. Type 302 Stainless Steel and Carbon Steel Music Wire. (read more)

Precision Compression.

For demanding applications where reliability is essential. Comprehensive selection of sizes in Music Wire and Type 302 Stainless Steel manufactured to rigid standards under strict tolerances. Music Wire parts are Zinc Plated, Stainless Steel plain; ends are closed and ground. High Carbon Steel Music Wire (ASTM A228) parts are able to be cycled repeatedly and... (read more)

Curved Springs may be used to reduce axial end play. They exert light thrust loads relative to their dimensions and have a nearly linear rate between 10% and 80% of available deflection (deflection should not exceed 80%). Curved Springs have two contact points and Outside Diameter expands under load. Curved Springs are often a solution in situations where Belleville Disc Springs would ha... (read more)

Music wire, although its name is derived from the material used for piano wire, is a common high-carbon steel alloy used for spring manufacture. It is cold drawn and offers uniform tensile strength. Music wire springs are not recommended for applications where the temperature exceeds 121 C (250 F). Music wire is highly magnetic. (read more)

These are the most common types of springs, and the measurements/speciifations needed to match a customer’s part with a stock item. These dimensions are also necessary for us to make a custom part if a stock size is not available.

• Carbon Steel
• Stainless Steel
• MBHD (“plain” carbon)
• 300 Series (301/302/304/313)<.../li>

Cot springs offer high loads in static applications with small deflections. Ends are easily installable machine hooks. Material is MBHD (Medium Basic Hard Drawn) Carbon Steel - finish is zinc plated. Nine stock sizes from 1 & 5/8 to 3 & 3/4 inches in length offer maximum recommended loads ranging from just over 18 pounds to just under 50 pounds. (read more)

Precision Metric Compression Springs fit over standard metric sized rods and into standard metric sized holes. These parts are manufactured to strict DIN 2098, Grade 2 specifications. These parts are manufactured to strict DIN 2098, Grade 2 specifications. Music Wire is DIN 17223, Class 3 (C) per 1.1200. Stainless Steel is DIN 17224 per 1.4310. Ends are closed only on wire sizes 0.8 mm a... (read more)

Designed to fill load and spacial needs in the range between traditional Disc Springs and coiled compression springs, Poly Wave Springs offer loads of up to 25 lbs. with a free height of less than one inch. Poly Wave Springs are made from round edged flat wire that has been pre-tempered. Made from Type 17-7 PH Stainless Steel flat wire, these springs may be used in high heat environments... (read more)

Finger Springs are used to preload ball bearings and to reduce vibration in precision hard drive assemblies and other applications where light to medium loads are needed in a small space.

Can be used at high speeds.

Finger springs reduce noise and end play and do not increase in diameter during loading.

Contact points are equal to the number of fingers.

Finger... (read more)

Double Looped Extension

Double Looped Extension Springs offer additional safety for applications where the part’s ends must fasten securely.

Available in a range of sizes in MBHD Carbon Steel. Finish is Zinc Plated. (read more)

Wave Springs reduce axial end-play, particularly in ball bearing applications. Carbon or Stainless Wave Springs offer light to medium loads and are designed for applications where limited deflection is available.

Learn More (read more)

Designed in a conical shape so that each coil compresses within the other, Conical Compression Springs are able to achieve a much smaller solid height than ordinary compression springs. Ends are squared, not ground. Material is 302 Stainless Steel Conical Compression Springs ASTM A313 are able perform in high temperature environments, up to 500°F. Solid height is approximataly equal... (read more)

Q: What material should I choose when selecting a spring?
A: Different materials are better suited for different applications and environments. The Material Properties Table provides operating temperature ranges and other useful information.

Q: Why are Stainless Steel springs magnetic?
A: Stainless Steel becomes magnetic due to cold working in the manufacturing process.... (read more)

Gardner Curved Springs

Curved Disc Springs exert relatively light thrust loads and can be used to absorb axial endplay.

Gardner has significantly expanded its stock line of Curved Springs in both High Carbon Steel and 301 Stainless Steel.

Curved Springs have two contact points and Outside Diameter expands under load. Curved Springs are often a solution... (read more)

Gardner Spring, Inc. Extension springs made in the USA

Whatever your extension spring needs may be, Gardner Spring, Inc. is here to help.

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Learn More About Gardner Spring (read more)

Wave Springs

Wave Springs are highly useful when thrust loading is needed for small deflections. Also helpful when radial space is limited. Typical applications include axial loading of ball bearings.

Gardner Spring has been providing quality springs since 1907.

Gardner Spring, Inc., a Tulsa-based spring manufacturer supplying the OEM, industrial supply... (read more)

Ball Bearing Bellevilles are used to pre-load ball bearings to reduce noise and vibration, and are ideal for absorbing axial end play. These parts can be used to pre-load either the inner or outer ring of ball bearings, and are manufactured in sizes complimentary to a range of standard ball bearing sizes.

About Us:

Gardner Spring, Inc., a Tulsa-based spring ma... (read more)

12 inch long "Cut-to-Length" Compression Springs allow the user to cut the springs to the desired length and still be able to make use of the remainder of the part for other applications.

Cut-to-Length Compression Springs are available in a variety of Outside Diameters and Wire Diameters, making it easy for someone unfamiliar with spring design to quickly and inexpensively... (read more)

Drawbar Extension Springs are ideal for tensioning applications such as fences or gates, and also function as shock absorbers in intermittent load applications or for marine vessel mooring.

Drawbars allow compression springs to function as extension springs, preventing hyper-extension while enabling springs to be securely attached to load sources and anchors, eliminating th... (read more)

Torsion springs offer resistance to externally applied torque as the ends are rotated in angular deflection. Commonly used over an arbor or mandrel for support.

Gardner Torsion Springs are available in left or right hand wound in a variety of Deflection Angles. Type 302 Stainless Steel and Carbon Steel Music Wire. Custom sizes and materials are available upon request. (read more)

Ultra Precision Extension Springs are the perfect solution when dimensional and performance accuracy is essential. Stock sizes in premium quality Music Wire and Stainless Steel. (read more)

High quality general-purpose extension springs come in a wide range of lengths and load capacities ideally suited for OEM applications, equipment maintenance, as well as numerous industrial projects. (read more)

Belleville Disc Springs (conical disc springs) are ideal for applications where a large load is required in a small space. These springs provide high load capabilities in limited space, and through variations in stacking they can be adjusted to provide either larger deflections or loads or both. May be used in either static or cyclic applications. (read more)

Ball Bearing Bellevilles are used to pre-load ball bearings to reduce noise and vibration, and are ideal for absorbing axial end play. These parts can be used to pre-load either the inner or outer ring of ball bearings, and are manufactured in sizes complimentary to a range of standard ball bearing sizes. (read more)

Different types of disc springs have different ranges of deflections as do different designs within categories. General deflection ranges, grouped by category, are as follows:

• Belleville Disc Springs: up to 75% of available deflection
• Curved Disc Springs: between 10% – 80% of avail. defl.
• Wave Disc Springs: between 20% – 80% of avail. def...

Relating to “Cut-to-length” compression springs, this figure is used to determine the Spring Rate for a given part. The Spring Rate (in lbs./inch) is calculated by dividing the Spring Constant by the total number of coils used once the spring has been cut to desired length.

Cut to Length Compression.

12 inch long “Cut-to-Length” Compression Springs a... (read more)