A210204000206 Screw Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

A210204000206 Screw Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

A210204000206 is a Sany original part number screw, specifically designed for the SY1250H mining excavator. This model operates under heavy loads and intense vibrations, making component connections prone to loosening, thus highlighting the need for tight and anti-loosening fastening. It integrates high-strength wear-resistant materials, precision thread accuracy, anti-loosening and vibration-resistant structure, and corrosion and oil resistance as core characteristics. It conforms to national and industry standards such as GB/T 3098.1-2010 and GB/T 831-1988, and is compatible with core components such as the 150103150024A external gear pump, SSY008119457 hydraulic oil tank assembly, and A210491000121 washers. Suitable for open-pit coal mines and metal mines, it prevents component loosening, detachment, and thread stripping, making it a crucial original part for ensuring continuous operation of the entire machine in the mine.

Core technical parameters

Model: A210204000206
Main body material: Available in 10.9 grade high-strength alloy steel (SCM435) and 304 stainless steel.
Operating temperature: -30℃ to 150℃, suitable for open-pit mines with large day-night temperature differences and high-temperature environments in hydraulic systems.
Key operating parameters: M12-M30 size (compatible with SY1250H connection requirements), length 15-80mm, dimensional tolerance ±0.02mm, conforming to GB/T 3098.1 standard specifications; hardness 33-39HRC (10.9 grade), Brinell hardness 280-320HB (stainless steel); tightening torque 80-350N·m, anti-loosening performance meets heavy-duty mining requirements, coarse thread design, low tightening torque and strong locking; precision forming using cold heading + thread rolling, surface flatness ≤0.01mm, service life ≥8000 working hours.
Structural design: Employs an external hexagon/internal hexagonal flower-shaped structure; the thread uses a triangular cross-section design, the screw head is chamfered, and the tail uses a tapered guide design; built-in anti-loosening threads.
Shape and size: It features a standard cylindrical thread structure, a regular shape, and is free of burrs and cracks. Its dimensions are precisely matched with the SY1250H hydraulic components and pipeline connection interfaces. Specifications and lengths are customized according to the original factory assembly standards.
Surface treatment: The alloy steel version is treated with Dacromet coating and anti-corrosion coating, while the stainless steel version is treated with mechanical polishing and passivation, with salt spray resistance ≥1500 hours; the surface is smooth and clean.

Core functions and roles

As the “core fastening connector” of the SY1250H, its core function is to secure the core components of the hydraulic system, transmit fastening force, prevent loosening and vibration, prevent components from loosening or falling off due to severe vibration, and protect the connection surface from scratches. It can prevent hydraulic system failures and sudden equipment shutdowns caused by loose components, extend the service life of core components such as gear pumps, oil tanks, and pipelines, reduce maintenance costs, and work in conjunction with gear pumps, hydraulic oil tanks, gaskets, etc., to form a complete machine fastening and protection system. It is a key fastening accessory to ensure stable and efficient mining operations.

Applicable Scenarios

Widely used in the hydraulic system of the SY1250H machine, it is compatible with the connection parts of components such as the 150103150024A external gear pump, SSY008119457 hydraulic oil tank, and A210491000121 washer, providing fastening, anti-loosening, and protective functions. It can also be used with large mining excavators of the same specifications. Suitable for 24-hour continuous heavy-duty and harsh working conditions in open-pit mines and earthmoving projects, it is an essential fastening accessory for equipment manufacturing, overhaul, after-sales maintenance, and bulk procurement. It can reduce component loosening losses and downtime costs, and improve operational efficiency.

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