A210111000362 Bolt Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

A210111000362 Bolt Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

A210111000362 is a Sany original equipment bolt, specifically designed for the heavy-duty operation of the SY1250H mining excavator. It is adapted to the high-pressure, high-impact working characteristics of this model, integrating high-strength alloy material, precision threads, vibration resistance, anti-loosening, corrosion resistance, and wear resistance. It meets multiple national and industry standards and is compatible with components such as the B210780000693 split flange and A210491000122 gasket. Suitable for open-pit mining, it prevents thread stripping and bolt breakage, making it a crucial original equipment part for safe mining operations.

Core technical parameters

Model: A210111000362
Main material: Available in two materials: 12.9 grade high-strength alloy steel (35CrMo, 42CrMo) and 304 stainless steel. Both undergo heat treatment to ensure a dense material that resists hydraulic oil and dust corrosion. The 12.9 grade alloy steel version has a low content of harmful elements, preventing increased brittleness; the 304 stainless steel version has a tensile strength ≥700MPa, suitable for high-humidity and corrosion-resistant working conditions.
Operating temperature: -30℃ to 150℃, suitable for open-pit mine temperature differences and high-temperature environments of hydraulic systems, with good pre-tightening force retention and no loosening under long-term vibration; the 12.9 grade alloy steel version can withstand high temperatures of 300℃ for short periods, suitable for connection parts near heat sources.
Core operating parameters: Specifications M16-M30, length 20-100mm, dimensional tolerance ±0.02mm, thread tolerance 6g/6H; 12.9 grade alloy steel with tensile strength ≥1200MPa, yield strength ≥1080MPa, hardness 38-44HRC, tightening torque 120-450N·m; cold heading + thread rolling process, surface roughness Ra≤0.4μm, service life ≥8000 working hours, meeting mining heavy-duty standards.
Structural Design: External hexagonal head structure, with performance grade and manufacturer’s mark on the head for easy identification and disassembly; triangular thread provides good anti-loosening performance, and the fully threaded rod section is suitable for heavy loads; the head is chamfered to prevent scratches, and the tail is tapered to facilitate installation. With the help of washers, the anti-loosening effect can be improved, and it is also vibration-resistant and deformation-resistant.
Shape and size: Standard cylindrical thread structure, regular shape, and dimensions that are precisely matched with SY1250H flanges, gaskets, and main pump connectors. Customized according to original factory standards, it can be directly replaced and belongs to the core component of high-strength bolted connection of steel structure.
Surface treatment: The alloy steel version uses phosphating + Dacromet process to prevent hydrogen embrittlement and has 7-10 times the corrosion resistance of ordinary electroplated zinc, with salt spray resistance ≥1500 hours; the stainless steel version uses polishing + passivation treatment, which is corrosion resistant and environmentally friendly, and can effectively resist the erosion of harsh mining environments.

Core functions and roles

As a “high-strength fastening core connector” of the SY1250H, its core function is to transmit fastening force, tighten all core parts, distribute preload, protect the connection surface, prevent loosening and vibration, and avoid connection failure. It can reduce component wear and reduce maintenance costs. Together with gaskets, flanges, etc., it forms a fastening system and is a key component for stable mining operations.

Applicable Scenarios

Widely used in SY1250H split flanges, main pump connections, and other parts, it is compatible with related components, providing high-strength fastening, anti-loosening, and vibration-resistant functions. It can also be used with Sany mining excavators of the same specifications. Suitable for harsh working conditions such as open-pit mines, it is an essential accessory for equipment manufacturing, maintenance, and bulk procurement, reducing downtime costs and improving overall machine stability.

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