{"product_id":"pressed-steel-swivel-castors-with-white-nylon-wheel-50mm-75mm","title":"Pressed Steel Swivel Castors With White Nylon Wheel - 50mm \u0026 75mm","description":"\u003cstyle\u003e\n  .cs-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; color: #1a1a1a; max-width: 960px; margin: 0 auto; }\n  .cs-hero { background: #f4f6f8; border-left: 5px solid #2c3e50; padding: 28px 32px; margin-bottom: 36px; }\n  .cs-hero h1 { font-size: 1.75rem; font-weight: 700; color: #2c3e50; margin: 0 0 12px; letter-spacing: -0.3px; }\n  .cs-hero p { font-size: 1rem; line-height: 1.75; color: #444; margin: 0; }\n  .cs-section { margin-bottom: 40px; }\n  .cs-section h2 { font-size: 1.2rem; font-weight: 700; color: #2c3e50; border-bottom: 2px solid #e0e4e8; padding-bottom: 8px; margin-bottom: 20px; text-transform: uppercase; letter-spacing: 0.5px; }\n  .cs-section h3 { font-size: 1.05rem; font-weight: 700; color: #34495e; margin: 24px 0 10px; }\n  .cs-compare-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; margin-bottom: 8px; }\n  .cs-compare-table th { background: #2c3e50; color: #fff; padding: 11px 14px; text-align: left; font-weight: 600; }\n  .cs-compare-table td { padding: 10px 14px; border-bottom: 1px solid #e8ecef; vertical-align: top; }\n  .cs-compare-table tr:nth-child(even) td { background: #f9fafb; }\n  .cs-compare-table tr:hover td { background: #eef2f7; }\n  .cs-spec-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; margin-bottom: 8px; }\n  .cs-spec-table th { background: #34495e; color: #fff; padding: 9px 13px; text-align: left; font-weight: 600; }\n  .cs-spec-table td { padding: 9px 13px; border-bottom: 1px solid #e8ecef; }\n  .cs-spec-table tr:nth-child(even) td { background: #f9fafb; }\n  .cs-app-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }\n  .cs-app-card { background: #f9fafb; border: 1px solid #e0e4e8; border-radius: 6px; padding: 20px 22px; }\n  .cs-app-card h4 { font-size: 0.95rem; font-weight: 700; color: #2c3e50; margin: 0 0 10px; border-bottom: 1px solid #dde2e8; padding-bottom: 8px; }\n  .cs-app-card ul { margin: 0; padding-left: 18px; }\n  .cs-app-card ul li { font-size: 0.88rem; color: #444; line-height: 1.7; }\n  .cs-faq { margin-bottom: 0; }\n  .cs-faq-item { border-bottom: 1px solid #e0e4e8; padding: 16px 0; }\n  .cs-faq-item:last-child { border-bottom: none; }\n  .cs-faq-item h4 { font-size: 0.95rem; font-weight: 700; color: #2c3e50; margin: 0 0 8px; }\n  .cs-faq-item p { font-size: 0.88rem; color: #555; line-height: 1.7; margin: 0; }\n  .cs-note { background: #eef6fb; border-left: 4px solid #2980b9; padding: 12px 16px; font-size: 0.85rem; color: #2c3e50; margin-top: 10px; border-radius: 3px; }\n  @media (max-width: 640px) { .cs-app-grid { grid-template-columns: 1fr; } .cs-hero h1 { font-size: 1.35rem; } }\n\u003c\/style\u003e\n\u003cdiv class=\"cs-wrap\"\u003e\n\u003c!-- HERO --\u003e\n\u003cdiv class=\"cs-hero\"\u003e\n\u003ch1\u003ePressed Steel Swivel Castors with White Nylon Wheel — 50mm \u0026amp; 75mm\u003c\/h1\u003e\n\u003cp\u003eThese pressed steel swivel castors are precision-engineered for smooth, reliable mobility across a wide range of light-duty and medium-duty applications. Fitted with a hard-wearing white nylon wheel and secured via a four-hole top plate, they are designed to mount cleanly onto flat surfaces and deliver consistent, quiet rolling performance. Available in two wheel diameters — 50mm and 75mm — each size is optimised for a specific load capacity and height requirement, making them a versatile choice for furniture makers, retailers, workshop operators, and facilities managers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background-color: #fffbd3; padding: 25px; border-radius: 8px; border-left: 6px solid #ffcc00; border-right: 6px solid #ffcc00; border-top: 2px solid #ffcc00; border-bottom: 2px solid #ffcc00; margin: 20px 0;\"\u003e\n\u003ch3\u003e\u003cstrong\u003eAvailable in Multiple Castor Wheel Sizes \u0026amp; Types\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp style=\"font-size: 14px; color: #282500; margin: 0; line-height: 1.7;\"\u003eExplore this castor wheel's different types, and also Available in multiple sizes. Choose the options below.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"..\/products\/pressed-steel-braked-swivel-castors-with-white-nylon-wheel-50mm-75mm\" target=\"_blank\"\u003e\u003cstrong\u003eBraked Swivel Castors \u003c\/strong\u003e With White Nylon Wheel - 50mm \u0026amp; 75mm \u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"..\/products\/pressed-steel-fixed-castors-with-white-nylon-wheel-50mm-75mm\" target=\"_blank\"\u003e\u003cstrong\u003eFixed Castors \u003c\/strong\u003e With White Nylon Wheel - 50mm \u0026amp; 75mm \u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- COMPARISON TABLE --\u003e\n\u003cdiv class=\"cs-section\"\u003e\n\u003ch2\u003eQuick Comparison — All Options at a Glance\u003c\/h2\u003e\n\u003ctable class=\"cs-compare-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003e50mm Wheel\u003c\/th\u003e\n\u003cth\u003e75mm Wheel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheel Diameter\u003c\/td\u003e\n\u003ctd\u003e50 mm\u003c\/td\u003e\n\u003ctd\u003e75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTread Width\u003c\/td\u003e\n\u003ctd\u003e22 mm\u003c\/td\u003e\n\u003ctd\u003e22 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Height\u003c\/td\u003e\n\u003ctd\u003e72 mm\u003c\/td\u003e\n\u003ctd\u003e100 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwivel Radius\u003c\/td\u003e\n\u003ctd\u003e45 mm\u003c\/td\u003e\n\u003ctd\u003e68 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Load Capacity\u003c\/td\u003e\n\u003ctd\u003e65 kg\u003c\/td\u003e\n\u003ctd\u003e75 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheel Material\u003c\/td\u003e\n\u003ctd\u003eWhite Nylon\u003c\/td\u003e\n\u003ctd\u003eWhite Nylon (75 Shore D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBearing Type\u003c\/td\u003e\n\u003ctd\u003ePlain Bearing\u003c\/td\u003e\n\u003ctd\u003ePlain Bearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTop Plate Size\u003c\/td\u003e\n\u003ctd\u003e60 × 60 mm\u003c\/td\u003e\n\u003ctd\u003e60 × 60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHole Centres (L × W)\u003c\/td\u003e\n\u003ctd\u003e48 × 38 mm\u003c\/td\u003e\n\u003ctd\u003e48 × 38 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHole Diameter\u003c\/td\u003e\n\u003ctd\u003e6 mm\u003c\/td\u003e\n\u003ctd\u003e6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwivel Head Type\u003c\/td\u003e\n\u003ctd\u003ePressed Steel\u003c\/td\u003e\n\u003ctd\u003ePressed Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitting Method\u003c\/td\u003e\n\u003ctd\u003e4-Hole Top Plate\u003c\/td\u003e\n\u003ctd\u003e4-Hole Top Plate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"cs-note\"\u003e* All measurements are nominal. Load capacities stated are per individual castor. For equipment load ratings, divide total equipment weight by the number of castors fitted.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- 50MM OPTION --\u003e\n\u003cdiv class=\"cs-section\"\u003e\n\u003ch2\u003e50mm Wheel \/ 65 kg Load Capacity\u003c\/h2\u003e\n\u003ch3\u003eFull Technical Specifications\u003c\/h3\u003e\n\u003ctable class=\"cs-spec-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheel Diameter\u003c\/td\u003e\n\u003ctd\u003e50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTread Width\u003c\/td\u003e\n\u003ctd\u003e22 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Height (floor to top of plate)\u003c\/td\u003e\n\u003ctd\u003e72 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwivel Radius\u003c\/td\u003e\n\u003ctd\u003e45 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Load Capacity (per castor)\u003c\/td\u003e\n\u003ctd\u003e65 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheel Material\u003c\/td\u003e\n\u003ctd\u003eWhite Nylon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBearing Type\u003c\/td\u003e\n\u003ctd\u003ePlain Bearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwivel Head Construction\u003c\/td\u003e\n\u003ctd\u003ePressed Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTop Plate Dimensions\u003c\/td\u003e\n\u003ctd\u003e60 mm × 60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHole Centres (Length × Width)\u003c\/td\u003e\n\u003ctd\u003e48 mm × 38 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHole Diameter\u003c\/td\u003e\n\u003ctd\u003e6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Fixing Holes\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitting Method\u003c\/td\u003e\n\u003ctd\u003eFour-Hole Top Plate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTypical Applications — 50mm\u003c\/h3\u003e\n\u003cdiv class=\"cs-app-grid\"\u003e\n\u003cdiv class=\"cs-app-card\"\u003e\n\u003ch4\u003eFurniture \u0026amp; Retail Displays\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eLight display units and shelving trolleys\u003c\/li\u003e\n\u003cli\u003eRetail gondola bases and point-of-sale stands\u003c\/li\u003e\n\u003cli\u003eShowroom furniture requiring low-profile mobility\u003c\/li\u003e\n\u003cli\u003eDomestic furniture such as side tables and ottomans\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cs-app-card\"\u003e\n\u003ch4\u003eOffice \u0026amp; Hospitality\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOffice equipment trolleys and filing pedestals\u003c\/li\u003e\n\u003cli\u003eHotel luggage racks and service trolleys\u003c\/li\u003e\n\u003cli\u003eCatering equipment with light load requirements\u003c\/li\u003e\n\u003cli\u003eReception area furniture and mobile partitions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cs-app-card\"\u003e\n\u003ch4\u003eWorkshop \u0026amp; Storage\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSmall tool cabinets and parts bins\u003c\/li\u003e\n\u003cli\u003eLightweight storage crates and tote boxes\u003c\/li\u003e\n\u003cli\u003eWorkbench accessories and mobile jig boards\u003c\/li\u003e\n\u003cli\u003eGarage and hobby workshop equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cs-app-card\"\u003e\n\u003ch4\u003eHealthcare \u0026amp; Education\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMedical supply trolleys with light loads\u003c\/li\u003e\n\u003cli\u003eSchool and classroom mobile storage units\u003c\/li\u003e\n\u003cli\u003eLaboratory equipment carts\u003c\/li\u003e\n\u003cli\u003eClinic and dental practice auxiliary trolleys\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- 75MM OPTION --\u003e\n\u003cdiv class=\"cs-section\"\u003e\n\u003ch2\u003e75mm Wheel \/ 75 kg Load Capacity\u003c\/h2\u003e\n\u003ch3\u003eFull Technical Specifications\u003c\/h3\u003e\n\u003ctable class=\"cs-spec-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheel Diameter\u003c\/td\u003e\n\u003ctd\u003e75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTread Width\u003c\/td\u003e\n\u003ctd\u003e22 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Height (floor to top of plate)\u003c\/td\u003e\n\u003ctd\u003e100 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwivel Radius\u003c\/td\u003e\n\u003ctd\u003e68 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Load Capacity (per castor)\u003c\/td\u003e\n\u003ctd\u003e75 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheel Material\u003c\/td\u003e\n\u003ctd\u003eWhite Nylon (75 Shore D hardness)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBearing Type\u003c\/td\u003e\n\u003ctd\u003ePlain Bearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwivel Head Construction\u003c\/td\u003e\n\u003ctd\u003ePressed Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTop Plate Dimensions\u003c\/td\u003e\n\u003ctd\u003e60 mm × 60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHole Centres (Length × Width)\u003c\/td\u003e\n\u003ctd\u003e48 mm × 38 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHole Diameter\u003c\/td\u003e\n\u003ctd\u003e6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Fixing Holes\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitting Method\u003c\/td\u003e\n\u003ctd\u003eFour-Hole Top Plate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTypical Applications — 75mm\u003c\/h3\u003e\n\u003cdiv class=\"cs-app-grid\"\u003e\n\u003cdiv class=\"cs-app-card\"\u003e\n\u003ch4\u003eIndustrial \u0026amp; Warehouse\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMedium-duty warehouse picking trolleys\u003c\/li\u003e\n\u003cli\u003ePacking bench and dispatch station mobility\u003c\/li\u003e\n\u003cli\u003eIndustrial shelving units and racking bases\u003c\/li\u003e\n\u003cli\u003eAssembly line component carts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cs-app-card\"\u003e\n\u003ch4\u003eRetail \u0026amp; Commercial Fit-Out\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy retail display units and gondola systems\u003c\/li\u003e\n\u003cli\u003eCommercial kitchen prep trolleys\u003c\/li\u003e\n\u003cli\u003eShop fitting and visual merchandising fixtures\u003c\/li\u003e\n\u003cli\u003eStockroom and back-of-house mobile shelving\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cs-app-card\"\u003e\n\u003ch4\u003eWorkshop \u0026amp; Trade\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTool chests and mechanic roller cabinets\u003c\/li\u003e\n\u003cli\u003eWelding and fabrication equipment trolleys\u003c\/li\u003e\n\u003cli\u003eTrade show display structures\u003c\/li\u003e\n\u003cli\u003ePortable workstations and mobile benches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cs-app-card\"\u003e\n\u003ch4\u003eHealthcare \u0026amp; Facilities\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eHospital ward equipment trolleys\u003c\/li\u003e\n\u003cli\u003eFacilities management cleaning and janitorial carts\u003c\/li\u003e\n\u003cli\u003eCare home mobility aids and equipment stands\u003c\/li\u003e\n\u003cli\u003ePharmacy and dispensary mobile storage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- WHY CHOOSE --\u003e\n\u003cdiv class=\"cs-section\"\u003e\n\u003ch2\u003eWhy These Castors Stand Out\u003c\/h2\u003e\n\u003cp\u003eThe pressed steel swivel head provides a robust, rigid mounting platform that resists flex under load, ensuring the castor tracks true and the wheel maintains consistent floor contact. The white nylon wheel is hard-wearing, non-marking on most smooth floor surfaces, and performs reliably on concrete, tile, vinyl, and hardwood. The four-hole top plate design distributes fixing stress evenly across the mounting surface, reducing the risk of pull-through on thinner panels. The plain bearing construction keeps the unit lightweight and maintenance-free, making it well suited to applications where regular servicing is impractical.\u003c\/p\u003e\n\u003cp\u003eBoth sizes share an identical top plate footprint (60 × 60 mm, 48 × 38 mm hole centres, 6 mm holes), which means you can upgrade from the 50mm to the 75mm option without re-drilling your equipment — a significant advantage when retrofitting or standardising across a fleet of trolleys or furniture pieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- FAQS --\u003e\n\u003cdiv class=\"cs-section\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"cs-faq\"\u003e\n\u003cdiv class=\"cs-faq-item\"\u003e\n\u003ch4\u003eWhat is the difference between the 50mm and 75mm options, and how do I choose?\u003c\/h4\u003e\n\u003cp\u003eThe primary differences are wheel diameter, total height, swivel radius, and load capacity. The 50mm castor stands 72mm tall and supports up to 65kg per unit, making it ideal for lower-profile furniture and lighter equipment. The 75mm castor stands 100mm tall, has a wider swivel arc (68mm radius), and supports up to 75kg per unit, making it better suited to heavier trolleys and equipment that benefits from a higher ground clearance. Both share the same top plate dimensions, so the choice comes down to the height and load requirements of your specific application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cs-faq-item\"\u003e\n\u003ch4\u003eWill the white nylon wheel mark or scratch my floor?\u003c\/h4\u003e\n\u003cp\u003eWhite nylon wheels are generally considered non-marking on smooth, sealed floor surfaces including vinyl, tile, laminate, and sealed concrete. They are hard (75 Shore D on the 75mm variant) and perform best on flat, clean surfaces. On rough or uneven floors, the hard nylon may transmit more vibration than a softer rubber or polyurethane wheel. If your floor surface is particularly sensitive or delicate, we recommend testing a single castor before fitting a full set.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cs-faq-item\"\u003e\n\u003ch4\u003eHow do I fit these castors, and what fixings do I need?\u003c\/h4\u003e\n\u003cp\u003eThese castors are fitted using the four-hole top plate. The plate measures 60 × 60 mm with hole centres of 48mm (length) by 38mm (width) and a hole diameter of 6mm. You will need four M6 bolts, nuts, and washers (not supplied) of an appropriate length for your mounting panel thickness. Mark and drill four 6mm holes in your equipment base using the plate as a template, then bolt through securely. Ensure the mounting surface is flat and rigid to achieve the full rated load capacity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cs-faq-item\"\u003e\n\u003ch4\u003eCan I mix 50mm and 75mm castors on the same piece of equipment?\u003c\/h4\u003e\n\u003cp\u003eMixing castor sizes on the same unit is not recommended. Different total heights (72mm vs 100mm) will cause the equipment to sit at an angle, placing uneven stress on the frame and reducing stability. For best results, fit four castors of the same size. If you need to increase height or load capacity, replace all castors simultaneously with the larger 75mm option.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Castorsuk.co.uk","offers":[{"title":"50mm - 65 KG","offer_id":56864439140732,"sku":null,"price":13.07,"currency_code":"GBP","in_stock":true},{"title":"75mm - 75 KG","offer_id":56864439173500,"sku":null,"price":14.72,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0621\/7003\/8451\/files\/50mm-1.jpg?v=1781180430","url":"https:\/\/castorsuk.co.uk\/products\/pressed-steel-swivel-castors-with-white-nylon-wheel-50mm-75mm","provider":"castorsuk.co.uk","version":"1.0","type":"link"}