Sprung Heavy & Light Duty Drawbars for Agricultural Trailer

DescriptionApplicationsThe sprung drawbar integrates multiple leaf springs to enhance trailer ride comfort and reduce tractor hitch stress. It suits agricultural trailers carrying heavy loads over long distances. Install the drawbar with three U-bolts on the 20mm thick base plate, reinforce the pivot using a saddle, and lubricate the phosphor bronze front pivot bush for smooth operation.Leaf springs absorb road impacts while transmitting forces between wheels and frames. They stabilize vehicle handling and guide the trailer during travel. Suitable for trucks, pickups, trailers, tankers, vans, flatbeds, and agricultural vehicles, these springs include conventional, parabolic, TRA, Z-type, and sprung drawbars.Key FeaturesFeatureSpecificationQC Management SystemIATF 16949-2016 implementedService QualityISO 9001-2015 implementedTechnical StandardsGB/T 19844-2018, GT/T 1222-2007Warranty12 months from shipping dateTesting EquipmentStiffness, Arc Height, Fatigue Testing MachinesRaw MaterialTop 3 steel mills in ChinaProduction AccuracyCNC cutting, eye rolling, tapering, quenching, tempering, shot peeningFatigue Life>120,000 cyclesHardness41HRC~48HRCPaintingNormal painting or E-coating with salt spray >100 hoursOverseas Sales14,000 tons to 30 countriesCertificatesCOC, PVOC, CIQ, SONCAP, BV, C/O, FORM E, FORM ALeaf Spring Types & MaterialsSpecificationDetailsTypesConventional, Parabolic, Z-type, TRA, Trailer, Sprung Drawbar, Bus, Heavy Truck, Light DutyMaterialsSUP7, SUP9, SUP10, 55CrMnA, 60CrMnBA, 50CrVA, 51B60, 5160, 6150, 9254Width Range44.5–125 mmThickness6–50 mmInterchangeable BrandsMERCEDES BENZ, VOLVO, TOYOTA, NISSAN, MAN, SCANIA, RENAULT, DAF, ISUZU, HINO, CIMCColorsRed, shiny black, dark black, grey, blue, customizableOptional PartsCenter bolts, clamps, copper bushes, bi-metal bushes, rubber bushes, nylon bushes, U-bolts, brackets, pinsPackageFumigated wooden pallets, steel palletsPaymentTT, LC, DPLead Time25–35 working daysMOQ60 pcsSprung Drawbar ModelsPart No.Section Size (mm)Total LeavesCapacity (kg)Centre Eye to Centre Bolt (mm)Centre Bolt to End (mm)Centre Eye to End (mm)Inner Diameter (mm)WLS1201407N01120 x 147180087010097045WLS1201409N01120 x 149250087010097045WLS1201411N01120 x 1411290087010097045WLS1201413N01120 x 1413330087010097045WLS1201415N01120 x 1415392087010097045Components & AssemblySprung drawbars include U-bolts with nylon nuts:M24x2x121x170/190/220 for 7/9/11 leaves drawbar springsM30x2x121x260/280 for 13/15 leaves drawbar springsOther leaf springs include conventional, parabolic, TRA, and Z-type classifications, ensuring compatibility with various trailers.