Dongfeng KR truck parts Left and right rear handles 8211021 22-C5103

Built for frequent use by drivers and maintenance personnel, the rear handles adopt a human-centric ergonomic design. The grip surface features a non-slip textured pattern (grid spacing 2mm) that increases friction by 40% compared to smooth surfaces, ensuring a secure hold even with greasy or gloved hands. The handle’s curvature (radius 15mm) fits the natural contour of a human palm, distributing pressure evenly across the grip area and reducing hand fatigue during long-term use. The 120mm grip length accommodates both single-hand and two-hand operation, while the 30mm projection from the cab wall provides sufficient clearance for thick gloves—critical for drivers working in cold northern regions. The handle’s weight (180g per unit) balances sturdiness and portability, avoiding excessive bulk in the cab

Engineered to bear human support loads and resist accidental impacts, the handles are crafted from PA66+GF30 glass fiber-reinforced plastic—offering a tensile strength of 85MPa and impact strength of 12kJ/m², far exceeding ordinary ABS plastic. The material undergoes UV stabilization treatment, maintaining color and structural integrity after 3000-hour QUV testing (equivalent to 5 years of direct sunlight exposure). Finite element analysis confirms each handle can withstand a static load of 150kg (the weight of an average adult) for 10 minutes without deformation, and a 5kg impact test from 1m height without cracking. The mounting base is reinforced with integrated rib structures (thickness 5mm), ensuring the handle remains securely fastened to the cab wall even under repeated heavy loads

Designed to endure the cab interior environment (humidity, cleaning agents, oil stains), the rear handles exhibit exceptional resistance to corrosion and chemical degradation. The PA66+GF30 material is inert to common cab cleaning agents (detergents, alcohol, diesel), with no discoloration or surface damage after 72-hour immersion. It resists moisture absorption (water absorption rate ≤0.8% after 24 hours), preventing mold growth and structural weakening in humid southern China. The metal mounting bolts are made of 304 stainless steel, resisting rust and corrosion even in coastal areas with high air salinity. The handle’s surface coating (matte black finish) is scratch-resistant (pencil hardness ≥2H), maintaining a neat appearance despite frequent contact and cleaning

Optimized for efficient fleet maintenance, the rear handles feature a hassle-free installation and maintenance design. Each handle comes with 4 pre-matched M6×16 stainless steel bolts and lock washers, which align perfectly with the cab’s original mounting holes. Installation requires only a Phillips screwdriver, with a torque of 8-10N·m to secure the bolts—two technicians can replace both handles in 20 minutes, 50% faster than non-OE parts. The non-slip texture is integral to the handle (not a separate coating), avoiding wear and tear that requires replacement. The handles are compatible with Dongfeng KR’s original cab interior trim, ensuring a seamless fit that maintains the cab’s aesthetic integrity. With a service life of ≥200,000km and no regular maintenance required, they minimize fleet operational costs