130903000088A003 Backrest Assembly Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

130903000088A003 Backrest Assembly Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

This product is an original factory-customized core safety and comfort accessory for the cab, compatible with various construction machinery cab seats. Its core function is to provide stable support for the back and waist of the driver and passengers. It is ergonomically designed to relieve back and waist fatigue caused by long hours of work. It also features flexible angle adjustment to accommodate different driver and passenger sitting habits. When the vehicle is bumpy, it can stably support the body and reduce swaying, ensuring driving safety. It is suitable for long-term working scenarios in mines and construction sites, improving driving comfort and safety, and complies with relevant standards for automotive seat safety and construction machinery components.
This product is precisely matched to the cab seats of Sany, XCMG, Caterpillar and other series of construction machinery. It is compatible with the 130903000088A001 headrest assembly and the 130903000088A002 headrest guide sleeve assembly. It adopts an integrated process of frame welding, cold curing foaming and surface covering. It is compatible with the original factory seat installation position, quick installation without adjustment, withstands harsh working conditions, and is firmly installed without loosening or displacement. As the core support component of the seat, it ensures the overall safe and stable operation of the seat.

【Core Technical Parameters】

– Product Model: 130903000088A003
– Product Type: Backrest Assembly (Original Equipment Manufacturer, Core Support Component for Construction Machinery Cab Seats)
– Compatible models: Cabs for Sany, XCMG, Caterpillar, and other series of construction machinery; compatible with loaders, excavators, bulldozers, etc.; compatible with headrest assemblies 130903000088A001 and 130903000088A002, allowing direct replacement of original parts.
– Material: The internal frame is made of high-strength steel plate, the cushioning layer is made of high-resilience cold-blown sponge, and the outer skin is made of wear-resistant and flame-retardant imitation leather (composite fabric optional). It undergoes welding, foaming, and coating processes. The steel plate has a tensile strength ≥500MPa, the sponge density is 35-55kg/m³, and the outer skin has a flame-retardant rating of UL94-V0. It is sturdy, durable, and easy to clean.
– Operating temperature range: -30°C to +80°C (Stable performance under extreme temperatures, no brittleness, no aging, no deformation, no decrease in sponge resilience, no fading or cracking of the surface, and normal adjustment function)
– Structural Specifications: One-piece backrest structure, including steel plate frame, high-resilience sponge cushioning layer, leather covering, angle adjustment mechanism, locking device, compatible with rack and pinion adjustment system, backrest angle adjustable range 60-160°, built-in lumbar support structure, conforms to the curve of the human back and waist, and combines support, lumbar protection, and angle adjustment functions, conforming to ergonomic design.
– Dimensions: Precisely fits the original factory seat, with backrest height and width perfectly matching the workstation. It also perfectly matches the headrest assembly and headrest guide sleeve assembly. Dimensional tolerances are IT7-IT8 grade, with installation gaps ≤0.2mm. It is compatible with standard construction machinery seat installation dimensions, with a backrest width of approximately 480mm and a height of approximately 630mm.
– Installation method: Bolt + clip fixing, compatible with original seat mounting holes. Before installation, clean the holes of burrs and dirt, align the holes and tighten the bolts and clips to complete the installation. No professional tools are required. After installation, the seat is stable and does not wobble, and the adjustment is smooth.
– Protective performance: Waterproof, dustproof, and oil-resistant; surface is stain-resistant and easy to clean; salt spray resistance ≥480 hours; wear-resistant, aging-resistant, and UV-resistant; frame is corrosion-resistant and rust-resistant; sponge is not prone to collapse or deformation; effectively resists dusty and oily working conditions.
– Service life: ≥4 years under normal working conditions, ≥2 years under harsh working conditions, no faults after 15,000 angle adjustment tests, no wear or deformation, stable locking performance, sponge rebound rate ≥75%, and surface abrasion resistance ≥6,000 times, which can extend the overall service life of the seat.

Whether in bumpy environments, dusty mines, or extreme temperatures, this product consistently provides stable lumbar support, relieving back fatigue and ensuring driving safety and comfort while reducing maintenance costs. It is an original factory compatible part with a unique code for traceability, perfectly matching the 130903000088A001 headrest assembly and the 130903000088A002 headrest guide sleeve assembly. It is a high-quality original part for seat system repair and replacement, and for bulk stocking.

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1 130903000088A001 Headrest Assembly
2 130903000088A002 Headrest guide sleeve assembly
3 130903000088A003 Backrest Assembly
4 130903000088A004 Seat Cushion Assembly
5 130903000088A005 Right armrest assembly
6 130903000088A006 Left armrest assembly
7 130903000088A007 Slide rail assembly
8 130903000088A008 Air Suspension Damping Assembly
9 130903000088A009 Air Spring
10 130903000088A010 Seatbelt Assembly

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