Dongfeng VR truck parts left Tilt Arm with Rubber Bushing Assembly 5001025-C1101

Designed to work in tandem to reduce vibration transfer and enable smooth cab tilting, the assembly combines a rigid tilt arm with a high-performance EPDM rubber bushing. The rubber bushing (70 Shore A hardness) features a two-piece structure—inner metal sleeve for pivot pin compatibility and outer rubber layer that absorbs 65% of vibration from the chassis, preventing rattling noise in the cab during driving. It also reduces friction between the arm and pivot pin by 55%, requiring only 75N of force to actuate cab tilting (30% less than worn assemblies). The bushing’s flexible design allows ±3° of angular movement, accommodating minor chassis flex without stressing the tilt arm. Unlike tilt arms with rigid plastic bushings that cause rough operation, this synergetic design improves operator comfort and extends the lifespan of the entire tilt mechanism

Built to withstand the high torque and static loads of cab tilting (supporting up to 35% of the Dongfeng VR’s cab weight), the tilt arm is crafted from 40Cr alloy steel—heat-treated to HRC 39–43 for exceptional tensile strength (990 MPa) and impact resistance (26 kJ/m²). The arm undergoes precision forging to create a seamless, uniform structure, eliminating weak points from welding or casting. Critical sections (e.g., bushing housing, mounting hole edges) are reinforced with a 6mm-thick wall, capable of withstanding 3,200N of lateral force without bending. Finite Element Analysis (FEA) testing confirms the arm endures 5,500+ cab tilt cycles (equivalent to 8 years of heavy use) without fatigue cracking. Unlike low-carbon steel tilt arms that deform under load, this high-strength design ensures reliable cab support and smooth tilting throughout the truck’s service life

Engineered to resist wear from pivot movement and corrosion from underbody contaminants (road salt, mud, moisture), the assembly features dual protective treatments. The tilt arm’s surface is coated with a zinc-nickel alloy (16μm thickness)—providing 12x better corrosion resistance than standard zinc plating—passing 1,100 hours of neutral salt spray testing without rust. The arm’s bushing housing is precision-machined to a Ra 0.7μm surface finish, reducing friction with the rubber bushing and preventing premature wear. The EPDM rubber bushing is infused with UV-stabilizers and anti-aging additives, maintaining flexibility for 7+ years and resisting hardening or cracking from sun exposure. Unlike uncoated tilt arms that rust or wear quickly, this dual-protection design ensures the assembly remains functional in rain, snow, or dusty off-road conditions

Designed for hassle-free replacement by fleet technicians or DIY owners, the assembly arrives fully pre-assembled—the rubber bushing is factory-pressed into the tilt arm, eliminating the need for specialized pressing tools. It includes all necessary hardware: 2 M10×32mm stainless steel bolts, lock washers, a tube of anti-seize compound (for the pivot pin), and a torque guide (specifying 68 N·m for secure mounting). Installation takes 22–28 minutes: support the cab with a hydraulic jack, remove the old arm by unscrewing frame bolts and sliding out the pivot pin, clean the pivot pin and mounting surfaces, slide the new assembly onto the pin, align mounting holes with the frame, torque bolts to specification, and apply anti-seize to the pivot pin. No post-installation adjustment is needed—the pre-assembled bushing ensures proper alignment with the tilt mechanism. Each unit undergoes dimensional verification via CMM, load testing, and bushing fit checks, backed by a 24-month warranty against defects (e.g., arm bending, bushing cracking, corrosion)