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Self-lubricating bushings are useful components to add to any assembly that may be exposed to repeated vibrations or friction between two components. At READY Technology, we operate across North America as an ISO 9001-certified manufacturer, supplier, and distributor of high-quality metal and plastic components. Learn more about self-lubricating bushings and how SinterLube products can enhance your assembly's performance and long-term capabilities.

Bushings are small components designed to separate tangential parts in an assembly to mitigate the risk of vibration, friction, and other potential wear hazards. They dampen the energy that can transfer across components, which both protects the assembly components and can increase the comfort or capabilities of the equipment fitted with bushings. Also called anti-vibration mountings or sleeve bearings, bushings come in a wide range of shapes and styles to best fit the needs of different assemblies.

Self-lubricating bushings are bushings specifically designed to eliminate the need for manual lubrication. Bushings can be impregnated with lubricants within the layer of the bushing that makes contact with other parts. Self-lube bushings either use fluid lubricants — such as oil or grease — or solid materials — such as lead or graphite. The construction, lubricant type, and bushing materials will vary based on the operating temperature, the weight of the assembly, and other specifics.
Self-lubricating bushings are crucial in the consistently reliable and long-lasting performance of equipment that may otherwise be susceptible to friction, vibrations, and premature wear. SinterLube self-lubricating bronze bushings are uniquely capable of providing these advantages of self-lubricating components because they:

  • Resist wear and won't lose their shape or dimensions after millions of cycles, leading to increased accuracy and reliability throughout years of use
  • Don't require ongoing maintenance and relubrication like bronze-plated bushing alternatives
  • Are built for easy installation, disassembly, and reassembly
  • Can be run in machines performing up to 800 1" strokes per minute without losing performance capabilities
  • Have a small minimum running clearance of up to three times smaller than that required for similar graphite plug bushings
  • Have a reduced cost due to fewer machining requirements and faster production
  • Can easily replace SinterLube sintered bronze bushings for trial runs or complete upgrades without any retrofitting complications or added costs
Some of the most popular applications for self-lubricating bushings include:

  • Use in submerged applications, where lubrication and maintenance can be difficult
  • Machinery used in high-temperature environments where liquid lubricants are unsuitable
  • Use in high-speed equipment and machinery with fast cycles and strokes
  • Food processing applications that can't risk contamination from solid or fluid lubricant debris
Guide elements assist with easy installations and sealing performance of self-lubricating elements across multiple different applications. They include pins or pegs that facilitate the correct placement of the component within a larger assembly and prevent metal-to-metal contact that can cause premature wear.

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At READY Technology, we have years of experience providing innovative solutions that help our manufacturing and industrial clients reduce manufacturing costs, increase production, and achieve more consistent in-house capabilities due to reduced maintenance and unscheduled downtime concerns. Browse our catalog to see our inventory or request a quote for pricing details.

READY Technology, Inc. is here to assist you with any questions that you might have about die springs or SuperSprings®, our patented die spring solution. This FAQ section includes information on what separates SuperSprings® from other die springs. With a unique design, we engineer SuperSprings® for durable, long-lasting performance, with four load classes and full interchangeability to ensure a guaranteed fit.

SuperSprings® are READY-improved die springs. These rectangular springs contain a trapezoidal cross-section wire of alloy steel that, when coiled, alters into a "D" section to enhance stress resistance. This, along with advanced manufacturing techniques such as shot peening and heat treating, allows the springs to last longer than conventional die springs. Compliant with ISO 10243 for uniform diameters and lengths as well as load ratings and die spring color codes, we produce over 400 varieties of SuperSprings® for safe, dependable performance. SuperSprings® also provide better value as they offer consistent dimensional accuracy and more precise spring rates.
Die springs, or high compression springs, are a high-force variety of compression springs with a rectangular wire construction to withstand extreme stress or fatigue. Heavy-duty die springs are capable of handling up to 30% more load as compared to traditional compression springs, and they can handle high temperatures and harsh environments.
Although they are known as die springs, these springs work in a number of applications in addition to dies
for pressing or punching machinery. Some of the many applications for die springs include:

 
  • Although they are known as die springs, these springs work in a number of applications in addition to dies
    for pressing or punching machinery. Some of the many applications for die springs include:
  • Aircraft mechanisms
  • Brakes
  • Clutches
  • Farm equipment
  • Heavy-load and high-stress applications
  • Heavy machinery assemblies
  • High-temperature environments
The rectangular wire in die springs lends unique capabilities to these springs, which are typically found in applications offering limited space for the spring component. Using rectangular rather than circular wire, the cross-section area of the die spring features a larger mass, which results in greater applicable force and the capacity to store that compressed energy. The shape also reduces the chance that the springs will buckle.
Most die springs feature materials like oil-hardened steel, Chrome Silicon (CrSi), Chrome Vanadium (CrV), or their hybrid alloy, Chrome Silicon Vanadium (CrSiV). The chromium layer can increase die springs' strength and accuracy as well as their resistance to wear and corrosion. At READY, we produce our SuperSprings® from vacuum-degassed, valve spring quality alloy steel.
Die springs have two main coil configurations: closed-end and open-end. Both end configurations allow for grounding to form a flat, perpendicular surface to bear spring load. SuperSprings® use closed-end coils.


Closed-end die springs have a pitch that's reduced to the wire termination point, where the wire end sits on the coil next to it. This renders the last turn in the spring's coil configuration ineffective and incomplete, which can slightly alter the spring's compression. Alternatively, open-end die springs don't include a pitch reduction. This can form an uneven surface along the spring without grounding, but this may not significantly affect die machinery.
Compression and die springs use different designs for different ranges of functionality. Most applications requiring springs use compression springs, which have a circular wire configuration. When a task applies pressure to these springs, they shorten and store mechanical energy during compression, resisting the compressive force. Electronic devices and many other products use compression springs. Die springs are heavy-duty compression springs that withstand greater force than traditional compression springs. Their rectangular wire spring design and increased mass make them more suitable for applications involving harsh environments and high loads, including heavy machinery assemblies and automotive applications.

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Die springs offer more support for high-load, heavy-duty applications than other compression springs. READY's SuperSprings® allow users to benefit from their enhanced capabilities, providing superior quality as compared to standard die springs. We utilize our state-of-the-art CNC coiling and grinding machinery to achieve tight tolerances and reliable accuracy in our springs.


With four load classes, a longer service life, dependable performance, and interchangeable designs, SuperSprings® have the versatility and quality to fit your application. For more information, we invite you to browse our catalog.