{"id":4015,"date":"2026-05-25T06:45:01","date_gmt":"2026-05-25T06:45:01","guid":{"rendered":"https:\/\/cardancoupling.top\/?p=4015"},"modified":"2026-05-25T09:24:56","modified_gmt":"2026-05-25T09:24:56","slug":"cardan-coupling-for-solar-tracking-systems-engineering-precision-in-renewable-energy","status":"publish","type":"post","link":"https:\/\/cardancoupling.top\/pl\/application\/cardan-coupling-for-solar-tracking-systems-engineering-precision-in-renewable-energy\/","title":{"rendered":"Cardan Coupling for Solar Tracking Systems: Engineering Precision in Renewable Energy"},"content":{"rendered":"
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Solar Energy Engineering<\/div>\n

Cardan Coupling for Solar Tracking Systems: Engineering Precision in Renewable Energy<\/span><\/h2>\n

Solar farms across the UK demand mechanical components that can handle constant angular motion, harsh weather, and decades of continuous operation. Cardan couplings \u2014 also known as universal joints or propshaft couplings \u2014 have emerged as the backbone of solar panel tracking mechanisms, offering the precise torque transmission and misalignment tolerance that this application uniquely requires.<\/p>\n

\ud83d\udcc5 Get a Quote Now<\/a><\/p>\n

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\"CardanThe UK’s solar energy sector has grown dramatically over the past decade. From large-scale ground-mounted solar farms in the South of England to rooftop installations across industrial parks in the Midlands, the mechanical demands placed on tracking actuators and drive shafts are significant. A single-axis or dual-axis solar tracker moves panels through arcs of up to 180 degrees each day, repeating this cycle across thousands of operational hours per year. At the heart of these systems, a cardan coupling quietly handles every degree of rotation, compensating for shaft misalignment, absorbing torsional shock, and transmitting the precise torque needed to keep photovoltaic arrays facing the sun.<\/p>\n

At Ever Power, our engineering team has spent over 18 years designing and manufacturing cardan couplings specifically for demanding industrial applications. Working with solar energy contractors, EPC companies, and OEM tracker manufacturers across the United Kingdom, Europe, and globally, we’ve developed a deep understanding of what separates a coupling that lasts 25 years from one that fails after three monsoon seasons. This article walks through the engineering rationale, material science, real-world performance data, and procurement considerations that matter most to engineers and buyers sourcing cardan couplings for solar power applications.<\/p>\n<\/div>\n

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What Makes a Cardan Coupling Ideal for Solar Tracking?<\/h2>\n

\"Concentrated<\/p>\n

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Angular Misalignment Tolerance<\/h3>\n

Solar tracker shafts rarely achieve perfect geometric alignment in field installations. Ground settlement, thermal expansion of steel structures, and installation tolerances all introduce angular offset. A well-engineered cardan coupling accommodates misalignment angles of up to 45\u00b0 in single-joint configurations and greater ranges in double-joint (constant velocity) arrangements, meaning the tracker drive continues operating smoothly regardless of minor positional drift across the array.<\/p>\n<\/div>\n

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Torsional Load Management<\/h3>\n

Wind loading on solar panels creates sudden torsional spikes in the drive shaft. British weather in particular \u2014 with its unpredictable gusting patterns across exposed hillside and coastal farm sites \u2014 means the coupling experiences repeated impact torque cycles. Unlike rigid flanged couplings, a cardan joint distributes these shock loads across its cross-journal bearing assembly, protecting both the actuator motor and the panel mounting structure from premature fatigue failure.<\/p>\n<\/div>\n

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Compact Shaft-to-Shaft Connection<\/h3>\n

Solar tracker torque tubes are long, often spanning 30\u201360 metres across a single row of panels. The drive coupling must connect the central gearbox output shaft to the torque tube cleanly, without consuming excessive axial space. Cardan couplings offer an inherently compact connection profile, and with customised yoke bore sizes and keyway configurations, they integrate directly onto standard tracker torque tube diameters used by leading UK and European tracker OEMs.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Engineering Principles: How the Cardan Joint Works in Solar Applications<\/h2>\n

\"CardanThe classical Hooke’s joint \u2014 the foundation of every cardan coupling \u2014 transmits rotary motion between two shafts that are not co-linear. The cross-journal (spider) sits at the intersection of two yoke forks, allowing rotation about two perpendicular axes simultaneously. In a single universal joint, there is a known velocity variation: at an angular offset, the output shaft velocity oscillates twice per revolution relative to the input. For most solar tracker speeds (typically 0.1\u20132 RPM), this non-constant velocity characteristic is entirely inconsequential and does not affect panel positioning accuracy or drive system longevity.<\/p>\n

Where higher positional precision is demanded \u2014 in concentrated photovoltaic (CPV) systems or heliostat arrays, for instance \u2014 a double cardan joint configuration eliminates velocity variation entirely, delivering true constant-velocity performance. Ever Power manufactures both single and double joint configurations, and our engineering team routinely assists UK solar contractors in selecting the correct arrangement based on tracker type, drive speed, torque envelope, and installation geometry.<\/p>\n

The cross-journal bearing is the most mechanically stressed component in the assembly. In solar tracking, the bearing rotates slowly but carries continuous radial load from the weight of the torque tube and panel array, plus dynamic wind-induced moments. Ever Power sources cross-journal assemblies machined from case-hardened alloy steel (typically 20CrMnTi or equivalent EN 36 grade), ground to h6 tolerance for precise yoke fit. Each bearing cup is individually heat treated, assembled with high-load needle roller sets, and sealed with triple-lip polyurethane seals rated for -40\u00b0C to +180\u00b0C operating temperatures \u2014 a specification that comfortably covers Scottish Highland winters and Spanish desert summers alike.<\/p>\n<\/div>\n

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\"Solar<\/p>\n

Cardan coupling driving a single-axis solar tracker torque tube assembly<\/p>\n<\/div>\n

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Technical Specifications & Performance Parameters<\/h2>\n

The table below summarises the key performance parameters for Ever Power’s solar-grade cardan coupling range. All values represent standard catalogue specifications; custom designs are available outside these ranges upon request. Rated torque figures assume continuous operation at the stated misalignment angle; peak torque capacity is typically 2.5\u00d7 rated for shock load events.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nLight-Duty (SL)<\/th>\nMedium-Duty (SM)<\/th>\nHeavy-Duty (SH)<\/th>\n<\/tr>\n<\/thead>\n
Rated Torque (Nm)<\/td>\n50 \u2013 500<\/td>\n500 \u2013 5,000<\/td>\n5,000 \u2013 50,000<\/td>\n<\/tr>\n
Max. Operating Speed (RPM)<\/td>\n\u2264 1,500<\/td>\n\u2264 1,000<\/td>\n\u2264 600<\/td>\n<\/tr>\n
Max. Single-Joint Angle (\u00b0)<\/td>\n35\u00b0<\/td>\n45\u00b0<\/td>\n35\u00b0<\/td>\n<\/tr>\n
Bore Diameter Range (mm)<\/td>\n12 \u2013 40<\/td>\n30 \u2013 100<\/td>\n80 \u2013 200<\/td>\n<\/tr>\n
Operating Temperature (\u00b0C)<\/td>\n-40 to +120<\/td>\n-40 to +150<\/td>\n-40 to +180<\/td>\n<\/tr>\n
Lubrication Interval<\/td>\nGrease \/ 2,000 hrs<\/td>\nGrease \/ 3,000 hrs<\/td>\nGrease \/ 5,000 hrs<\/td>\n<\/tr>\n
Surface Treatment<\/td>\nZinc phosphate + epoxy coating \/ Hot-dip galvanising (optional)<\/td>\n<\/tr>\n
Material (Yoke \/ Spider)<\/td>\nDuctile iron GGG50 \/ Case-hardened alloy steel 20CrMnTi<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

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Material Choices & Corrosion Resistance for UK Outdoor Environments<\/h2>\n

\"EverSolar installations in the United Kingdom face a specific corrosion challenge that differs from many other global markets. The combination of Atlantic salt air (particularly relevant for coastal farms in Cornwall, Wales, and East Anglia), frequent rainfall, freeze-thaw cycling, and UV exposure creates an aggressive electrochemical environment. A cardan coupling that might perform reliably for 20 years in a dry desert climate could fail within five years if not properly specified for British outdoor conditions.<\/p>\n

Ever Power addresses this through a layered material and coating approach. The yoke forks are cast from spheroidal graphite (ductile) iron GGG50, which offers superior toughness compared to grey iron and resists brittle fracture even at sub-zero temperatures. The cross-journal assembly uses through-hardened and tempered alloy steel, with the bearing journals ground and superfinished to Ra 0.4 \u03bcm or better to extend needle roller life. External surfaces receive a two-stage protective system: a zinc phosphate conversion coating for adhesion, followed by a high-build epoxy topcoat resistant to salt spray per ISO 9227 for a minimum of 1,000 hours. For particularly aggressive coastal sites, hot-dip galvanising of the yoke assembly is offered as a standard upgrade at no disproportionate cost premium.<\/p>\n

Seal technology is equally critical. The needle roller bearing cups are fitted with nitrile rubber primary seals and a secondary polyurethane excluder lip, creating a labyrinth that prevents ingress of rain water, condensation, and fine soil particles. This dual-seal arrangement has been validated in IP67-equivalent immersion tests. Grease nipples are fitted as standard to all sizes above 200 Nm rated torque, with extended lubrication interval grease options available for sites where scheduled maintenance access is difficult or expensive.<\/p>\n<\/div>\n

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Key Advantages of Cardan Couplings over Alternative Drive Connection Methods<\/h2>\n

Engineers specifying solar tracker drivetrains have several coupling technologies to evaluate, including flexible jaw couplings, bellows couplings, and chain-type couplings. Each has its place, but cardan couplings offer a combination of advantages that makes them the preferred solution for most ground-mounted tracker configurations.<\/p>\n

\"Concentrated<\/p>\n

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01<\/div>\n

High Misalignment + High Torque in One Package<\/h3>\n

Flexible elastomeric couplings handle misalignment but cannot transmit the high torque required by large tracker rows. Cardan couplings handle both simultaneously, making them the only sensible choice for high-torque tracker drives with real-world installation tolerances.<\/p>\n<\/div>\n

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02<\/div>\n

No Rubber Degradation Over Time<\/h3>\n

Jaw and spider couplings rely on elastomeric elements that harden, crack, and lose their damping capacity over years of UV and thermal cycling. A steel cardan joint with properly maintained bearings maintains its performance characteristics across the full 25-year operational life expected of a solar farm investment.<\/p>\n<\/div>\n

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03<\/div>\n

Proven in Extreme Climate Conditions<\/h3>\n

The Hooke’s joint design has been in continuous industrial use for over 350 years. In solar tracking specifically, the technology is validated in operating conditions from -45\u00b0C in Mongolian steppes to +55\u00b0C ambient in Middle Eastern desert installations \u2014 proving its adaptability long before any new design standard was written.<\/p>\n<\/div>\n

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04<\/div>\n

Field Serviceable & Spare-Part Friendly<\/h3>\n

When maintenance is eventually needed, the cross-journal assembly can be replaced in the field without removing the entire drivetrain. This is particularly valuable for large UK solar farms where a prolonged drive failure represents significant lost generation revenue. Ever Power can supply replacement spider kits for all standard coupling sizes.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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\"Ever<\/h3>\n

Why Engineering Teams Across the UK Choose Ever Power<\/h3>\n

Ever Power has supplied cardan couplings to solar projects ranging from 5 MW community farms in rural Yorkshire to 200 MW utility-scale installations requiring thousands of identical coupling units with tight dimensional tolerancing for robotic tracker assembly lines.<\/p>\n

Our ISO 9001-certified manufacturing facility operates modern CNC machining centres, coordinate measuring machines (CMM), and automated heat treatment lines, giving us full control over every tolerance-critical dimension in the coupling assembly.<\/p>\n

\u2709 Contact Our Engineers<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Application Scenarios Within Solar Energy Systems<\/h2>\n

Cardan couplings appear in multiple mechanical sub-systems within a modern solar energy installation. Understanding each application context helps procurement engineers select the right specification and avoid over- or under-engineering the coupling for its duty cycle.<\/p>\n

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\u25b6 Single-Axis Tracker Main Drive<\/span><\/div>\n
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This is the most common application. A central linear actuator or rotary gearbox connects to the torque tube via a cardan coupling. The coupling accommodates both the angular change during panel rotation and any installation misalignment between the gearbox output and the tube centre. Rated torque requirements range from 200 Nm for small residential trackers to over 15,000 Nm for utility-scale row configurations. Ever Power supplies standard and custom yoke bore configurations to match all major tracker OEM specifications used in UK projects.<\/p>\n<\/div>\n<\/div>\n

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\u25b6 Dual-Axis Tracker Elevation Drive<\/span><\/div>\n
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In dual-axis trackers, a secondary drive handles the north-south elevation axis, introducing more complex angular geometry. A double cardan joint \u2014 two Hooke’s joints connected by an intermediate shaft \u2014 is standard practice here, eliminating velocity variation and ensuring the panel tilts at the exact commanded angle. This precision matters significantly in concentrated PV systems where even a 0.5\u00b0 pointing error can substantially reduce optical concentration on the cell array. Ever Power manufactures double-joint assemblies with intermediate tube lengths calculated to your specific tracker geometry.<\/p>\n<\/div>\n<\/div>\n

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\u25b6 Cleaning Robot Drive Systems<\/span><\/div>\n
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Automated panel cleaning robots increasingly used on large UK solar farms drive along the panel surface via tracked wheels. Where the robot transitions between panels at different tilt angles, cardan couplings in the wheel drive axles accommodate the angular discontinuity without binding or transmitting shock loads into the panel glass. Light-duty cardan joints in the 50\u2013300 Nm range are typically suitable for these applications, often with stainless steel or hot-dip galvanised yokes for the particularly aggressive chemical cleaning environments involved.<\/p>\n<\/div>\n<\/div>\n

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\u25b6 Heliostat Arrays & CSP Plants<\/span><\/div>\n
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Concentrated solar power (CSP) plants in southern Europe, North Africa, and the Middle East use large mirror arrays (heliostats) that must track the sun with exceptional precision across both azimuth and elevation axes. The demands placed on the drive couplings in these systems are among the most stringent in the entire solar industry: high torque (often exceeding 20,000 Nm), very low operating speed, continuous outdoor exposure, and near-zero backlash tolerance. Ever Power’s precision cardan joints, manufactured with ground yoke bores and pre-loaded cross-journal bearings, meet these requirements and have been independently tested to 40,000+ hours MTBF under simulated CSP duty cycles.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Customer Success Stories<\/h2>\n

Real projects. Real results. From the UK to continental Europe.<\/p>\n

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\ud83c\uddfa\ud83c\uddf0 United Kingdom \u2014 Lincolnshire Solar Farm<\/div>\n
Ground-mounted solar \/ Single-axis tracking \/ 78 MW<\/div>\n<\/div>\n
Case Study<\/div>\n<\/div>\n

A major UK renewable energy developer contracted Ever Power to supply 4,800 units of our SM-series cardan coupling for a new 78 MW single-axis tracking farm in Lincolnshire, commissioned in 2023. The project EPC team had experienced premature elastomeric coupling failures on a previous project in Scotland \u2014 specifically rubber element hardening caused by sustained below-zero temperatures during winter months. Switching to Ever Power’s all-steel cardan joints with dual-seal bearings eliminated the cold-weather failure mode entirely. Post-commissioning inspection at 12 months confirmed zero coupling-related tracker downtime events across the entire array. The client’s O&M team reported that maintenance intervals were extended from the originally planned 6 months to 18 months based on actual grease consumption data from sampled units.<\/p>\n<\/div>\n

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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“We’ve used various coupling suppliers over the years, but Ever Power’s solar-grade cardan joints are simply in a different category for corrosion resistance. We’re on year four of a coastal Welsh project and haven’t touched them \u2014 no rust, no play, no noise.”<\/p>\n

\u2014 James Whitfield<\/div>\n
O&M Manager, Renewable Assets UK<\/div>\n<\/div>\n
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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“The custom bore and keyway configuration Ever Power produced for our tracker torque tube was exactly what our design called for, delivered ahead of schedule. Their engineering team responded to technical queries within hours \u2014 impressive for a cross-border procurement.”<\/p>\n

\u2014 Marco De Luca<\/div>\n
Mechanical Engineer, SolarTrack GmbH, Germany<\/div>\n<\/div>\n
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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“Price, lead time, and technical spec all came together better than any previous UK solar coupling supplier I’ve worked with. We ordered 1,200 units for a Scottish Highlands project \u2014 all within specification and with full material certificates. Will order again without hesitation.”<\/p>\n

\u2014 Sarah Thornton<\/div>\n
Procurement Director, GreenField Energy Solutions, Edinburgh<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Ever Power Manufacturing & Custom Engineering Capability<\/h2>\n
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Ever Power’s manufacturing campus covers 35,000 square metres and houses over 120 CNC machining centres, dedicated heat treatment lines, and a full quality inspection laboratory. Our engineering team includes mechanical and metallurgical specialists with deep experience in coupling design for renewable energy applications specifically, not just general industrial power transmission.<\/p>\n

\"Ever<\/p>\n

Our custom engineering capability is one of our strongest differentiators when supplying to UK solar OEMs and EPC contractors. Standard catalogue couplings cover the majority of solar tracker applications, but every project has details that don’t quite fit a standard. We routinely engineer and manufacture cardan couplings<\/a> with custom bore diameters, non-standard keyway profiles, modified yoke fork geometry, bespoke intermediate shaft lengths, custom coating specifications, and non-standard cross-journal bearing materials (including stainless steel variants for marine-adjacent sites).<\/p>\n

From receipt of a technical drawing or dimensional specification, our team can produce prototype samples within 15 working days, and commit to production lead times of 25\u201345 days depending on complexity and batch size. For projects requiring large quantities, we offer dedicated production scheduling with weekly delivery call-off to support just-in-time construction site logistics. DDP (Delivered Duty Paid) Incoterms to any UK address are available as standard, giving procurement teams complete cost certainty from the moment of order.<\/p>\n

\ud83d\udce6 Get a Quote \u2014 sales@cardancoupling.top<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Sourcing Cardan Couplings for UK Solar Projects: What Buyers Need to Know<\/h2>\n

\"CardanUK solar procurement teams typically work within tight project timelines, where mechanical component delays can push back panel commissioning and affect contracted generation start dates. Selecting a coupling supplier that combines solid engineering competence with reliable global logistics is therefore as important as the technical specification itself. Ever Power ships from our manufacturing facility directly to UK construction sites via established freight partners, with DDP Incoterms available as standard for orders above a minimum batch threshold. Our packaging is engineered for freight \u2014 couplings are individually wrapped, boxed with dimensional foam inserts, and packed in export-grade pallets with full labelling for site logistics teams.<\/p>\n

From a quality assurance standpoint, all cardan couplings supplied for solar applications are dispatched with a Certificate of Conformance, material test certificates (MTCs) for the yoke and cross-journal material, and dimensional inspection records. Projects in England, Scotland, and Wales that require third-party inspection (TPI) at source can be accommodated through approved inspection agencies operating in our region. UKCA marking and CE marking (for export to remaining EU markets) are available where applicable standards apply.<\/p>\n

For buyers comparing the total cost of ownership between our cardan coupling and locally-sourced alternatives, we encourage a full life-cycle cost analysis rather than a unit price comparison. The extended lubrication intervals, corrosion-resistant coating systems, and field-replaceable bearing assemblies built into every Ever Power solar coupling translate directly into reduced O&M expenditure across a 25-year farm life \u2014 savings that typically exceed the initial per-unit cost differential many times over.<\/p>\n<\/div>\n

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\"Cardan<\/div>\n

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Frequently Asked Questions<\/h2>\n
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What type of cardan coupling is best for a single-axis solar tracker in the UK?
\n\u2304<\/span><\/div>\n
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For most UK single-axis solar tracker applications, a standard single Hooke’s joint cardan coupling with rated torque matched to your drive gearbox output and a misalignment capacity of at least 15\u00b0 is suitable. If your site has particularly uneven ground requiring large angular offsets, or if you need constant-velocity output, a double cardan joint arrangement is recommended. Ever Power can advise based on your specific tracker model and site geometry.<\/p>\n<\/div>\n<\/div>\n

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How much does a solar-grade cardan coupling cost, and where can I get a price quote for a UK project?
\n\u2304<\/span><\/div>\n
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The price of a solar cardan coupling depends on torque rating, bore diameter, material specification, and batch quantity. For a typical UK solar farm order, unit prices range from a few dozen pounds for light-duty sizes to several hundred pounds for heavy-duty CSP-grade units. For an accurate quote, email sales@cardancoupling.top<\/a> with your torque requirement, bore dimensions, and quantity.<\/p>\n<\/div>\n<\/div>\n

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Which cardan coupling supplier can deliver quickly to solar construction sites in England and Scotland?
\n\u2304<\/span><\/div>\n
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Ever Power offers DDP delivery to UK addresses including England, Scotland, and Wales. Standard orders from our solar coupling range can typically be dispatched within 25\u201330 working days, with express options for smaller quantities. We partner with established international freight providers to ensure reliable door-to-site delivery with full shipment tracking.<\/p>\n<\/div>\n<\/div>\n

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How do I know if a cardan coupling will survive the corrosive coastal environment of a UK solar farm?
\n\u2304<\/span><\/div>\n
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Ask your supplier for ISO 9227 salt spray test data for their coupling surface treatment. Ever Power’s standard zinc phosphate and epoxy coating is rated for a minimum of 1,000 hours salt spray, and our hot-dip galvanised option provides substantially extended protection for the most aggressive coastal sites in England, Wales, and Scotland. Triple-lip sealed needle roller bearings prevent water ingress at the most vulnerable points of the assembly.<\/p>\n<\/div>\n<\/div>\n

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Can you supply custom cardan couplings with non-standard bore sizes for our solar tracker torque tube?
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Yes. Custom bore diameters, keyway profiles, and yoke fork geometry are a standard part of our service to solar OEM and EPC customers. Send your dimensional drawing to sales@cardancoupling.top<\/a> and our engineering team will confirm feasibility and lead time within 48 hours.<\/p>\n<\/div>\n<\/div>\n

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What is the expected service life of a cardan coupling used in a 25-year solar farm project in the UK?
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With correct specification, proper installation, and adherence to lubrication intervals, a quality cardan coupling should match the full 25-year design life of a solar farm. The cross-journal bearing assembly is the primary wear item and can be replaced in the field without removing the yoke forks, meaning the coupling body itself rarely needs full replacement during the project lifetime.<\/p>\n<\/div>\n<\/div>\n

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When should I choose a double cardan joint instead of a single joint for my solar tracker drive?
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Choose a double cardan joint when your tracker drive requires constant angular velocity output, when operating angle exceeds 20\u00b0 continuously, or when your application is a dual-axis tracker, CPV system, or heliostat array where pointing precision is critical. For standard single-axis PV trackers at angles under 15\u00b0, a single joint is generally sufficient and more cost-effective.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Ready to Source Cardan Couplings for Your Solar Project?<\/h2>\n

Send your specifications to our engineering team and receive a detailed technical proposal and competitive price within 48 hours.<\/p>\n

\u2709 Get a Quote \u2014 sales@cardancoupling.top<\/a><\/p>\n<\/div>\n

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\u00a9 Ever Power Transmission Co., Ltd. | Cardan Coupling Manufacturer & Supplier | sales@cardancoupling.top<\/a> | cardancoupling.top | edit by gzl<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

Solar Energy Engineering Cardan Coupling for Solar Tracking Systems: Engineering Precision in Renewable Energy Solar farms across the UK demand mechanical components that can handle constant angular motion, harsh weather, and decades of continuous operation. Cardan couplings \u2014 also known as universal joints or propshaft couplings \u2014 have emerged as the backbone of solar panel […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[5635],"tags":[],"class_list":["post-4015","post","type-post","status-publish","format-standard","hentry","category-application"],"_links":{"self":[{"href":"https:\/\/cardancoupling.top\/pl\/wp-json\/wp\/v2\/posts\/4015","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cardancoupling.top\/pl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cardancoupling.top\/pl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cardancoupling.top\/pl\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cardancoupling.top\/pl\/wp-json\/wp\/v2\/comments?post=4015"}],"version-history":[{"count":6,"href":"https:\/\/cardancoupling.top\/pl\/wp-json\/wp\/v2\/posts\/4015\/revisions"}],"predecessor-version":[{"id":4072,"href":"https:\/\/cardancoupling.top\/pl\/wp-json\/wp\/v2\/posts\/4015\/revisions\/4072"}],"wp:attachment":[{"href":"https:\/\/cardancoupling.top\/pl\/wp-json\/wp\/v2\/media?parent=4015"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cardancoupling.top\/pl\/wp-json\/wp\/v2\/categories?post=4015"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cardancoupling.top\/pl\/wp-json\/wp\/v2\/tags?post=4015"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}