{"product_id":"gator-rc-2-8mm-ball-bearing-link-adjusters-4-pack","title":"Gator RC 2.8mm Ball Bearing Link Adjusters – 4 Pack","description":"\u003ch2 style=\"font-size: 1.8em; color: #1e293b; margin-bottom: 10px;\"\u003eGator RC 2.8mm Ball Bearing Link Adjusters (4-Pack)\u003c\/h2\u003e\n\u003cp style=\"margin-bottom: 10px;\"\u003eCreate smooth, precise control linkages for RC airplanes with these \u003cstrong\u003eGator RC 2.8mm Ball Bearing Link Adjusters\u003c\/strong\u003e. Each adjuster incorporates a compact radial ball bearing at the control-arm connection, allowing the linkage to pivot freely while maintaining accurate control surface tracking under continuous flight loads.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 15px;\"\u003eThe solid unthreaded link shank is designed to be custom drilled and tapped to accept common \u003cstrong\u003e4-40 or M3 threaded pushrods and turnbuckles\u003c\/strong\u003e on your workbench. These premium metal links are an excellent choice for aileron, elevator, and rudder linkages, pairing cleanly with high-performance hardware including \u003ca href=\"https:\/\/www.gator-rc.com\/collections\/servo-arms\" style=\"color: #007ace; font-weight: bold; text-decoration: underline;\" target=\"_blank\" rel=\"noopener\"\u003eSecraft Aluminum Servo Arms\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv style=\"background-color: #fffaf0; border-left: 5px solid #ed8936; padding: 12px; margin: 15px 0;\"\u003e\n\u003ch3 style=\"color: #1e293b; margin: 0 0 6px 0; font-size: 1.05em;\"\u003e⚠ Critical Mechanical Installation Requirements:\u003c\/h3\u003e\n\u003cul style=\"margin: 0; padding-left: 20px; font-size: 0.95em; color: #334155;\"\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003eBearing Orientation:\u003c\/strong\u003e When using these adjusters, the bearings \u003cstrong\u003emust face the top\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003eScrew Placement:\u003c\/strong\u003e The head of the 2mm (M2) screw goes directly up against the center inner ring of the bearing.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003ePlastic Spacer Sandwich:\u003c\/strong\u003e You must place a small plastic washer or spacer sandwiched directly between the bearing face and the servo arm. This is very important to allow the outer bearing race to spin cleanly without binding against the flat arm metal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f8fafc; padding: 12px; border-left: 5px solid #1e293b; margin-bottom: 15px;\"\u003e\n\u003ch3 style=\"color: #1e293b; margin: 0 0 8px 0; font-size: 1.1em;\"\u003e🚀 Target Applications:\u003c\/h3\u003e\n\u003cul style=\"margin: 0; padding-left: 20px;\"\u003e\n\u003cli\u003eHigh-load, heavy-duty main control surface linkages demanding zero-play geometry\u003c\/li\u003e\n\u003cli\u003ePrecision sport planes, IMAC competition aerobatic models, and large-scale aircraft\u003c\/li\u003e\n\u003cli\u003eAny advanced layout where traditional composite ball links are replaced with rigid, ball-bearing pivots\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f8fafc; padding: 12px; border: 1px solid #e2e8f0; border-radius: 5px; margin-bottom: 15px;\"\u003e\n\u003cstrong\u003e🔧 Builder Preparation Required:\u003c\/strong\u003e The solid link shank arrives completely unthreaded from the factory. It must be drilled and tapped by the modeler to fit your chosen 4-40 or M3 threaded pushrod or turnbuckle hardware. Ensure you use the exact recommended drill bit size and tap pitch to avoid ruining the core metal wall.\u003c\/div\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBall-Bearing Pivot Hub:\u003c\/strong\u003e Integrated 2.8mm micro ball bearing allows the linkage to pivot smoothly without introducing side-load friction onto your servo towers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRigid Custom Threading:\u003c\/strong\u003e Oversized 5.37mm solid metal shank provides plenty of wall material to cut deep, clean 4-40 or metric M3 threads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero-Slop Tracking:\u003c\/strong\u003e Mechanical ball bearing race eliminates loose linkage play, improving servo centering and giving you crisp, repeatable control surface positioning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Outer Geometry:\u003c\/strong\u003e Streamlined footprint drops cleanly into standard fiberglass control horn slots or multi-servo linkage trays without clearance binding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-Adjuster Value Bundle:\u003c\/strong\u003e Shipped as a complete 4-pack to fully outfit an entire dual-aileron wing assembly or a multi-point tail layout from a single package.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"margin-top: 20px;\"\u003e\n\u003cdetails style=\"border: 1px solid #ccc; padding: 10px; border-radius: 5px;\" open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003e📋 Technical Specifications\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding-top: 15px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 0.9em;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n\u003ctd style=\"padding: 6px;\"\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px;\"\u003eRC Aircraft Control Linkage Ball-Bearing End Adjuster\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n\u003ctd style=\"padding: 6px;\"\u003e\u003cstrong\u003eBearing Inner Hole:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px;\"\u003e2.8 mm (0.110 in) — Sized for standard fasteners\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n\u003ctd style=\"padding: 6px;\"\u003e\u003cstrong\u003eLink Shank Diameter (OD):\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px;\"\u003eApproximately 5.37 mm (0.211 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n\u003ctd style=\"padding: 6px;\"\u003e\u003cstrong\u003eCompatible Threads:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px;\"\u003e4-40 or M3 threads (Must be custom drilled and tapped)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n\u003ctd style=\"padding: 6px;\"\u003e\u003cstrong\u003eHardware Mounting Pin:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px;\"\u003eAccepts standard M2 (2mm) mounting screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px;\"\u003e\u003cstrong\u003eRetail Package Quantity:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px;\"\u003e4 Ball-Bearing Link Adjusters per retail package\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 0.85em; color: #64748b; margin: 10px 0 0 0; font-style: italic;\"\u003e*Please note: This package contains the four adjusters only. Mounting screws, washers, spacers, pushrods, turnbuckles, servo arms, and tools are not included and are sold separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003ch3\u003e📦 Package Includes:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e4 × 2.8 mm Ball-Bearing Link Adjusters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"margin-top: 15px; padding: 12px; border: 1px dashed #64748b; background-color: #f8fafc;\"\u003e\n\u003ch4 style=\"margin-top: 0; font-size: 1em;\"\u003e💡 Workbench Sizing Guide\u003c\/h4\u003e\n\u003cul style=\"margin: 0; padding-left: 20px; font-size: 0.95em;\"\u003e\n\u003cli style=\"margin-bottom: 4px;\"\u003eTo thread the link shank, clamp it securely in a bench vise using soft jaws. Carefully drill out the core using a #43 bit for 4-40 threads, or a 2.5mm bit for M3 threads, then run your tap slowly into the hole.\u003c\/li\u003e\n\u003cli\u003eCheck full servo travel on your workbench, and verify that the bearing links do not hit mechanical over-travel limits or strike adjacent control bay formers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003chr style=\"margin: 20px 0;\"\u003e\n\u003cdiv style=\"background-color: #f0f7ff; padding: 12px; border-left: 5px solid #007ace;\"\u003e\n\u003cp style=\"margin: 0; font-size: 0.95em;\"\u003e\u003cstrong\u003eThe Gator RC Advantage:\u003c\/strong\u003e We stock genuine Gator RC products along with compatible wheels, high-strength aluminum axles, custom landing gear tracks, and installation accessories to help complete your project. Orders ship quickly from our Illinois warehouse.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Gator-RC","offers":[{"title":"Default Title","offer_id":46988802261214,"sku":"GRC-BL-720","price":11.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/1436\/6686\/files\/4_ball_links.png?v=1785768235","url":"https:\/\/www.gator-rc.com\/products\/gator-rc-2-8mm-ball-bearing-link-adjusters-4-pack","provider":"Gator RC","version":"1.0","type":"link"}