{"id":9969,"date":"2025-06-19T23:25:32","date_gmt":"2025-06-20T07:25:32","guid":{"rendered":"https:\/\/richconn.com\/?p=9969"},"modified":"2025-06-19T23:25:33","modified_gmt":"2025-06-20T07:25:33","slug":"orbiting-scroll-design-and-manufacturing","status":"publish","type":"post","link":"https:\/\/richconn.com\/orbiting-scroll-design-and-manufacturing\/","title":{"rendered":"Orbiting Scroll: Design and Manufacturing Guide","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"\n<p>Modern HVAC systems use the orbiting scroll for its energy efficiency, small size and quiet operation. Both commercial and residential refrigeration systems use this technology. Orbiting scroll systems can achieve isentropic efficiencies of 70 to 75%. That\u2019s why they are often chosen for energy saving applications.<\/p>\n\n\n\n<p>This blog post covers the technical aspects of orbiting scrolls. It includes design theory, geometry, material selection, manufacturing methods and how to optimize performance.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-is-an-orbiting-scroll\">What is an Orbiting Scroll?<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"746\" height=\"561\" src=\"https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/What-is-an-Orbiting-Scroll.jpg\" alt=\"What is an Orbiting Scroll\" class=\"wp-image-9991\" style=\"width:457px;height:auto\" srcset=\"https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/What-is-an-Orbiting-Scroll.jpg 746w, https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/What-is-an-Orbiting-Scroll-300x226.jpg 300w\" sizes=\"(max-width: 746px) 100vw, 746px\" \/><\/figure>\n\n\n\n<p>An orbiting scroll is a spiral shaped part used in positive displacement compressors, especially scroll compressors. Unlike traditional reciprocating or rotary mechanisms, the orbiting scroll moves along an eccentric path but does not rotate. This extraordinary movement traps gas pockets and compresses them which leads to efficient fluid compression.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-operating-principle\">Operating Principle<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"973\" height=\"516\" src=\"https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/The-working-principle-of-the-orbiting-scroll.jpg\" alt=\"The working principle of the orbiting scroll\" class=\"wp-image-9990\" srcset=\"https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/The-working-principle-of-the-orbiting-scroll.jpg 973w, https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/The-working-principle-of-the-orbiting-scroll-300x159.jpg 300w, https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/The-working-principle-of-the-orbiting-scroll-768x407.jpg 768w\" sizes=\"(max-width: 973px) 100vw, 973px\" \/><\/figure>\n\n\n\n<p>An eccentric crankshaft drives the orbiting scroll in a circular path but the scroll itself does not spin. As it moves it forms crescent shaped pockets of gas between itself and the fixed scroll. These pockets shrink as they approach the center which compresses the gas. This procedure runs continuously, providing smooth and efficient gas compression.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-applications\">Applications<\/h3>\n\n\n\n<p>Orbiting scrolls are used in more than just HVAC &amp; refrigeration systems. They are widely used in automotive superchargers&nbsp;and also in certain specialized parts such as NASA&#8217;s&nbsp;space suit compressors where small size and high reliability is key.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-design-procedure-and-considerations\">Design Procedure and Considerations<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"783\" height=\"549\" src=\"https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/Orbiting-scroll.jpg\" alt=\"Orbiting scroll\" class=\"wp-image-9987\" style=\"width:800px;height:auto\" srcset=\"https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/Orbiting-scroll.jpg 783w, https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/Orbiting-scroll-300x210.jpg 300w, https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/Orbiting-scroll-768x538.jpg 768w\" sizes=\"(max-width: 783px) 100vw, 783px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-a-scroll-geometry\">A. Scroll Geometry<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-wrap-profiles\">Wrap Profiles<\/h4>\n\n\n\n<p>Spiral compression chamber in orbiting scroll compressors is shaped by Archimedean, involute or hybrid (AI) wrap profiles. Involute curves come from base circles and help achieve smoother compression &amp; better sealing. Archimedean spirals with linear spacing help maintain a steady pressure gradient.<\/p>\n\n\n\n<p>Hybrid profiles combine the strengths of both. They help balance compression ratio and volumetric efficiency over different operating conditions.<\/p>\n\n\n\n<p>When selecting a wrap profile a number of key parameters must be evaluated:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Base circle radius (r<\/strong><strong>\u2099\u209c<\/strong><strong>\u208db\u208e):<\/strong>\u00a0Mostly 3.0\u202fmm<\/li>\n\n\n\n<li><strong>Starting involute angle (\u03c6\u2080):<\/strong>\u00a0\u00b10.735\u202frad which determines the initial thickness of blade<\/li>\n\n\n\n<li><strong>Orbiting radius (r\u2080<\/strong><strong>\u2099\u209c<\/strong><strong>\u208do\u208e):<\/strong>\u00a05.0\u202fmm \u2013\u00a0based on the crank or orbital coupling<\/li>\n\n\n\n<li><strong>Maximum involute angle (\u03c6<\/strong><strong>\u2098<\/strong><strong>\u2090\u2093):<\/strong>\u00a0Typically 8\u03c0\u202frad (almost 4 full spirals) which gives a wrap length of about 1\u202fm<\/li>\n\n\n\n<li><strong>Scroll height:<\/strong>\u00a040\u202fmm is common in 4\u202fkW test rigs<\/li>\n\n\n\n<li><strong>Tip clearance:<\/strong>\u00a0Kept very tight at 0.002\u202fmm to prevent flank leakage<\/li>\n<\/ul>\n\n\n\n<p><em>With optimized geometries volumetric efficiencies can go beyond 85%.<\/em><\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-wrap-thickness-and-height\">Wrap Thickness and Height<\/h4>\n\n\n\n<p>Wrap thickness is usually between 3 and 5\u202fmm and wrap height is 40\u202fmm. These values affect the pressure ratio, chamber volume and how rigid the structure is. Increasing wrap height increases displacement volume but also increases axial forces and material stress.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-tip-seals\">Tip Seals<\/h4>\n\n\n\n<p>Tip seals are very important in reducing wear and leakage between scroll flanks. Manufacturers use high performance polymers like metal alloys or PTFE composites for these seals. Tangential clearances are mostly below 0.002\u202fmm. Well designed seals keep leakage low even at high speeds (1,000 to 3,000\u202fRPM) and discharge pressures up to 8\u202fbar.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-b-orbital-motion-and-kinematics\">B. Orbital Motion and Kinematics<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-eccentricity-and-radius\">Eccentricity and Radius<\/h4>\n\n\n\n<p>Most scroll mechanisms use orbital radii or eccentricities between <strong>5 to 7\u202fmm<\/strong>. Best value is often 7.08\u202fmm. These dimensions keep the scrolls meshed and pockets sealed. If the eccentricity is too small, compression staging suffers. If it\u2019s too large, the mechanism faces high radial loads.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-kinematic-simulation\">Kinematic Simulation<\/h4>\n\n\n\n<p>Engineers use multibody dynamic tools like MATLAB or ADAMS to model scroll movement. These simulations track acceleration, displacement and velocity as the crank rotates. The results show how forces act between the Oldham coupling and the orbiting scroll. They also show how clearances cause brief rotations. This helps engineers adjust clearances &amp; coupling shapes for low-vibration and stable performance.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-c-anti-rotation-mechanism\">C. Anti Rotation Mechanism<\/h3>\n\n\n\n<p>This mechanism stops the orbiting scroll from rotating. It keeps the orbital path precise and the scrolls meshed.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-types\">Types<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Oldham\u2019s coupling<\/strong>: This uses two slots &amp; keys set at right angles to block rotation. Engineers normally set the clearance at about 0.1 mm to keep backlash low. Oldham\u2019s coupling works well but adds some friction. Newer designs can reduce angular velocity changes to 5\u202f\u00d7\u202f10\u207b\u00b9\u2074\u00b0\/s.<\/li>\n\n\n\n<li><strong>Cross head mechanism<\/strong>: This guides a sliding cross head along a straight track. It provides strong stability, removes rotational backlash as well as improves wear resistance over time.<\/li>\n\n\n\n<li><strong>Pin and slot designs<\/strong>: Here a pin attached to the orbiting scroll slides inside a slot in the housing. It\u00a0is\u00a0compact and simple but needs precise alignment to work well.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-design-considerations\">Design Considerations<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Friction reduction<\/strong>: Designers try to minimize sliding contact by using low friction materials such as PTFE or applying surface treatments like hard anodizing.<\/li>\n\n\n\n<li><strong>Wear resistance<\/strong>: Clearances are kept under 0.2 mm. Ceramic coatings or hardened steel are common for these parts.<\/li>\n\n\n\n<li><strong>Lubrication needs<\/strong>: Continuous lubrication is required. System oil usually supplies a film at contact points to stop metal parts from wearing against each other.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-d-finite-element-analysis-fea\">D. Finite Element Analysis (FEA)<\/h3>\n\n\n\n<p>Use modal &amp; harmonic FEA tools like SolidWorks or ANSYS to see how stress distributes across the scroll. Look for peak stresses in the involute wraps when they are under pressure loads that can be hundreds of MPa. Do a dynamic vibration analysis to find the natural frequencies. This will help you avoid resonance.<\/p>\n\n\n\n<p>Use S\u2010N curves to calculate <a href=\"https:\/\/www.mdpi.com\/2076-3417\/10\/9\/3226\" target=\"_blank\" rel=\"noreferrer noopener\"><u>fatigue life<\/u><\/a>. Apply Darveaux or Goodman methods to see how cracks start and grow under cyclic axial and radial loads which are normally 1\u20102 kN.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-e-refrigerant-compatibility\">E. Refrigerant Compatibility<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-selection-criteria\">Selection Criteria<\/h4>\n\n\n\n<p>Choose refrigerants with specific heat ratios, right thermodynamic properties, density and pressure\u2010temperature characteristics. These support best compression.<\/p>\n\n\n\n<p>Choose refrigerants with low global warming potential (GWP) to minimize environmental impact. Non\u2010flammable options like R454B and R32 are good for this purpose.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-design-adjustments\">Design Adjustments<\/h4>\n\n\n\n<p>Select sealing materials that can withstand chemical exposure and limit diffusion. Match spiral\u2010tip seals and O\u2010rings to the refrigerant you use. Make sure the lubricant works with the chosen refrigerant. Some refrigerants require synthetic oils that have the correct viscosity and miscibility. Use oil\u2010lubricated scroll contact surfaces to reduce wear.<\/p>\n\n\n\n<p>Designing an orbiting scroll requires attention to geometry, sealing, motion control and material choices. To meet all these technical demands consider working with a specialist like <strong>Richconn<\/strong>. Our engineers have deep knowledge in every aspect of the design procedure.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-manufacturing-procedure-of-orbiting-scroll\">Manufacturing Procedure of Orbiting Scroll<\/h2>\n\n\n\n<p>Manufacturing of a precision orbiting scroll has a number of well defined steps. This guide explains the procedure from raw metal to a finished\u00a0and fully functional scroll geometry.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-1-material-selection\">1. Material Selection<\/h3>\n\n\n\n<p>Manufacturers select aluminum alloys like A356\/SiC composites for applications that need high thermal stability and low weight. For heavy duty or high load applications, steel or cast iron is used as these materials offer better wear resistance and strength.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-2-fabrication-methods\">2. Fabrication Methods<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-casting\">Casting<\/h4>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"847\" height=\"628\" src=\"https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/The-orbiting-scroll-manufactured-by-die-casting.jpg\" alt=\"The orbiting scroll manufactured by die casting\" class=\"wp-image-9989\" srcset=\"https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/The-orbiting-scroll-manufactured-by-die-casting.jpg 847w, https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/The-orbiting-scroll-manufactured-by-die-casting-300x222.jpg 300w, https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/The-orbiting-scroll-manufactured-by-die-casting-768x569.jpg 768w\" sizes=\"(max-width: 847px) 100vw, 847px\" \/><\/figure>\n\n\n\n<p>Fabrication process starts with precision casting to create the spiral body of the scroll. Choice between ductile iron and aluminum\u2010silicon alloys depends on targeted application. Casting produces a near\u2010net shape which minimizes material waste.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-machining\">Machining<\/h4>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"861\" height=\"571\" src=\"https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/CNC-machining-orbiting-scroll.jpg\" alt=\"CNC machining orbiting scroll\" class=\"wp-image-9984\" srcset=\"https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/CNC-machining-orbiting-scroll.jpg 861w, https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/CNC-machining-orbiting-scroll-300x199.jpg 300w, https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/CNC-machining-orbiting-scroll-768x509.jpg 768w\" sizes=\"(max-width: 861px) 100vw, 861px\" \/><\/figure>\n\n\n\n<p><a href=\"https:\/\/richconn.com\/understanding-cnc-milling\/\" target=\"_blank\" rel=\"noreferrer noopener\"><u>CNC milling<\/u><\/a>\u00a0follows to define the scroll wrap\u2019s contours with high accuracy. Operators use precise tool paths and controlled cutting speeds to maintain tight tolerances. For example a cutting speed of 230\u202fm\/min with through\u2010tool coolant keeps tool wear low. Machining continues until surface roughness is less than Ra &lt; 0.7 \u03bcm.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-surface-treatments\">3. Surface Treatments<\/h3>\n\n\n\n<p><a href=\"https:\/\/nickel-guide.microncoatings.it\/en\/niplate-coatings?\" target=\"_blank\" rel=\"noreferrer noopener\"><u>Electroless nickel\u2010phosphorus<\/u><\/a>\u00a0(Ni\u2013P) plating is applied to aluminum scrolls. The coating has 3\u201050\u202f\u00b5m thickness and 3\u201013% phosphorus. It increases hardness up to 750\u202fHV. This treatment provides wear resistance and even coverage on complicated shapes. After plating sulfuric acid anodizing is applied to aluminum wraps. In result 5\u201015\u202f\u00b5m oxide layer is created. This layer improves wear durability, corrosion resistance as well as retains lubricity.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-4-assembly\">4. Assembly<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-component-alignment\">Component Alignment<\/h4>\n\n\n\n<p>Put the scroll in its eccentric shaft. To stop unwanted rotation add an anti rotation device or Oldham coupling. Simulation\u00a0data showed that\u00a0there was <a href=\"https:\/\/www.mdpi.com\/2075-1702\/10\/8\/623\" target=\"_blank\" rel=\"noreferrer noopener\"><u>53%<\/u><\/a>\u00a0drop in orbital acceleration spikes when coupling\u2019s key structure was improved. This made\u00a0motion more stable.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-sealing\">Sealing<\/h4>\n\n\n\n<p>Insert tip seals into machined grooves to create an axial seal. Normally molded PEEK\/PTFE o\u2010ring or C spring seals are used for this purpose. This seal is similar to piston rings in reciprocating machines.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-lubrication\">Lubrication<\/h4>\n\n\n\n<p>Use ISO VG 32\u201068 synthetic lubricants such as PAGs, POEs or PAOs to improve flank sealing, reduce friction and protect against wear in orbiting scrolls. In high stress areas apply MoS\u2082\/PTFE coatings for extra durability.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-5-testing-and-quality-control\">5. Testing and Quality Control<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"832\" height=\"543\" src=\"https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/Precision-detection-of-the-orbiting-scroll.jpg\" alt=\"Precision detection of the orbiting scroll\" class=\"wp-image-9988\" srcset=\"https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/Precision-detection-of-the-orbiting-scroll.jpg 832w, https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/Precision-detection-of-the-orbiting-scroll-300x196.jpg 300w, https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/Precision-detection-of-the-orbiting-scroll-768x501.jpg 768w\" sizes=\"(max-width: 832px) 100vw, 832px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-performance-testing\">Performance Testing<\/h4>\n\n\n\n<p>Test the scroll\u2019s isentropic and volumetric efficiency at pressure ratios between 2.2 and 4.0\u202f:1. Flow rates for these tests range between 0.1 &amp; 0.5\u202fm\u00b3\/min.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-durability-testing\">Durability Testing<\/h4>\n\n\n\n<p>Scrolls face vibration endurance and thermal cycling tests. These tests find fatigue and thermal deformation problems that can harm sealing performance.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-leakage-testing\">Leakage Testing<\/h4>\n\n\n\n<p>Use sniffing, helium mass spectrometry or vacuum methods to detect leaks. These methods can find leaks as small as ~1\u00d710\u207b\u2079\u202fmbar\u00b7L\/s. This procedure checks that micro clearances remain intact or not.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-performance-optimization-for-orbiting-scroll\">Performance Optimization for Orbiting Scroll<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"940\" height=\"535\" src=\"https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/Orbiting-scroll-machining.jpg\" alt=\"Orbiting scroll machining\" class=\"wp-image-9986\" srcset=\"https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/Orbiting-scroll-machining.jpg 940w, https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/Orbiting-scroll-machining-300x171.jpg 300w, https:\/\/richconn.com\/wp-content\/uploads\/2025\/06\/Orbiting-scroll-machining-768x437.jpg 768w\" sizes=\"(max-width: 940px) 100vw, 940px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-efficiency-enhancements\">Efficiency Enhancements<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-volumetric-efficiency\">Volumetric Efficiency<\/h4>\n\n\n\n<p>To increase volumetric efficiency we adjust the design tip seals and wrap geometry for better performance. <a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2021MS%26E.1180a2014S\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\"><u>CFD analysis<\/u><\/a>\u00a0shows that a discharge\u2010matched wrap profile of about 66\u00b0 gives better chamber and sealing filling. This gives 4.9% isentropic &amp; 4.1% volumetric efficiency gain.<\/p>\n\n\n\n<p>We achieve this by parameterizing the spiral involute in CAD. We then run CFD iterations with MOST algorithms. The profile that reduces backflow and secondary vortices the most is chosen.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-mechanical-efficiency\">Mechanical Efficiency<\/h4>\n\n\n\n<p>Lowering mechanical friction is key to maintaining efficiency and performance over time. We use smooth surface finishes with Ra less than 0.7\u202f\u00b5m to reduce contact friction. Nickel\u2010phosphorus coatings at critical flank interfaces help increase durability and reduce wear.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-noise-and-vibration-control\">Noise and Vibration Control<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-design-modifications\">Design Modifications<\/h4>\n\n\n\n<p>Balancing masses are placed on the scroll wrap to reduce orbital vibration. Silicone damping bushings fit into the Oldham coupling and absorb shocks from movement. To suppress noise from resonance, engineers can add viscoelastic or particle damping layers to the housing.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-material-selection\">Material Selection<\/h4>\n\n\n\n<p>Gray cast iron and viscoelastic composites are chosen for their high damping ability. Constrained\u2010layer damping materials between layers is very effective at reducing high frequency vibration.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-reliability-and-longevity\">Reliability and Longevity<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-fatigue-resistance\">Fatigue Resistance<\/h4>\n\n\n\n<p>Orbiting scrolls continuously act under cyclic loads because of their orbital motion during compression. We use Finite Element Analysis (FEA) to design scroll profiles that reduce peak stress points. We optimize thickness in high strain areas to slow down crack formation under repeated pressure &amp; heat. Modal analysis helps to avoid structural resonance which extends the scroll\u2019s life a lot.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-wear-resistance\">Wear Resistance<\/h4>\n\n\n\n<p>RICHCONN uses hard coatings like Diamond\u2010Like Carbon (DLC) to reduce surface wear and friction. DLC brings the coefficient of friction down to about 0.2 which increases long term reliability. Additional coatings like MoS\u2082\/PTFE or electroless nickel\u2010phosphorus give extra sliding wear protection. Using strong base materials like alloyed steels or hardened aluminum prevents abrasive damage and galling.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-to-sum-up\">To Sum Up<\/h2>\n\n\n\n<p>This has covered everything you need to know to manufacture and design an orbiting scroll for maximum performance. Accurate wrap geometry, thorough testing and the right surface treatments all add up to scroll\u2019s long life. In the future, ongoing research and development will&nbsp;increase&nbsp;orbiting scrolls\u2019 role&nbsp;in HVAC&nbsp;and more advanced refrigeration &amp; industrial applications.<\/p>\n\n\n\n<p>If you&#8217;re looking for dependable manufacturing solutions then choose <a href=\"https:\/\/richconn.com\/\" target=\"_blank\" rel=\"noreferrer noopener\"><u>Richconn<\/u><\/a>. Let us handle your orbiting scroll design &amp; manufacturing needs.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-related-questions\">Related Questions<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-what-effect-do-radius-and-eccentricity-have-on-the-movement-of-an-orbiting-scroll\">What effect do radius and eccentricity have on the movement of an orbiting scroll?<\/h3>\n\n\n\n<p>Changing the radius and eccentricity allows you to adjust the movement. Increasing radius increases displacement and more eccentricity gives more compression but can cause more imbalance. Balancing both is key to efficient and smooth operation.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-why-use-aluminum-alloys-for-orbiting-scrolls\">Why use aluminum alloys for orbiting scrolls?<\/h3>\n\n\n\n<p>Aluminum alloys are a great choice for orbiting scrolls. They make lightweight components that also resist corrosion. These materials make CNC machining easier, reduce wear and improve heat transfer. Moreover they have a high strength to weight ratio for efficient operation especially in HVAC applications. Using aluminum alloys can also save cost by extending scroll life and simplifying processing.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-where-can-i-find-a-manufacturer-for-custom-orbiting-scrolls\">Where can I find a manufacturer for custom orbiting scrolls?<\/h3>\n\n\n\n<p>You can <a href=\"https:\/\/richconn.com\/contact\/\" target=\"_blank\" rel=\"noreferrer noopener\">contact Richconn<\/a> as they\u00a0manufacture\u00a0custom orbiting scrolls with outstanding quality. Our team uses CNC precision and has vast material knowledge.<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>Modern HVAC systems use the orbiting scroll for its energy efficiency, small size and quiet operation. Both commercial and residential refrigeration systems use this technology. Orbiting scroll systems can achieve isentropic efficiencies of 70 to 75%. That\u2019s why they are often chosen for energy saving applications. This blog post covers the technical aspects of orbiting [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":9985,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-9969","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cnc-parts-guide"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.8 (Yoast SEO v25.8) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Orbiting Scroll: Design and Manufacturing Guide<\/title>\n<meta name=\"description\" content=\"Discover the design and manufacturing insights for orbiting scrolls, exploring geometry, materials, and processes.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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