SSY005259885 Main pin Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

SSY005259885 Main pin Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

The SSY005259885 main pin shaft is compatible with tracked equipment such as Sany excavators and rotary drilling rigs, and is mainly used at core articulation points such as the boom, stick, and chassis. As a key hinge shaft, it is used to connect moving parts and transmit operating loads. It works with bushings and oil seals to complete bending, extension, and rotation movements, and is a fundamental core component that ensures the flexible operation and structural stability of the equipment.
This product is made of high-strength round steel, precision machined in one piece, and hardened by quenching and tempering. The shaft has uniform hardness, high surface finish, and is resistant to shearing and reciprocating wear, making it suitable for heavy-duty, high-frequency operations such as mining and earthmoving. Old pins are prone to wear, shrinkage, bending, grooving, rust, and loosening due to heavy-duty impacts and mud/sand intrusion, leading to increased hinge clearance, vibration, oil leaks, and abnormal noises, affecting operational accuracy. This product features precise original factory tolerances and high coaxiality, allowing for non-destructive replacement of old parts. It is suitable for routine maintenance and bulk stocking, restoring equipment hinge accuracy and reducing operating costs.

【Core Technical Parameters】

— Product Model: SSY005259885
— Product Name: Kingpin Shaft
— Product Type: SANY Original Articulated Load-Bearing, Rotary Transmission, and Wear-Resistant Positioning Shaft Accessories
— Compatible Models: Compatible with all Sany tracked construction machinery series, original factory size matching, and can be replaced without damage.
— Main material: High-strength alloy round steel, quenched and precision ground to harden, shear resistant, wear resistant and not easily bent.
— Operating conditions: Suitable for wide temperature ranges from -45℃ to +125℃, with stable strength and hardness at both high and low temperatures.
— Structural Design: Integrated precision optical axis, high coaxiality, precise fit, and smooth operation.
— Protective performance: Limits hinged components, bears concentrated stress, and prevents loosening, bending, and deformation.
— Surface treatment: fine grinding and polishing + hardening and rust prevention, smooth and wear-resistant shaft, rust-resistant grooved surface
— Operating characteristics: Supports articulated bending and stretching, transmits loads, and ensures precise and smooth equipment movement.
— Dimensional accuracy: Original factory precision tolerances, roundness standard, and seamless assembly with no gaps or deviations.
— Installation method: Original factory alignment assembly, no modification required, easy disassembly and assembly, and efficient maintenance.
— Working condition adaptability: Suitable for heavy-duty, high-frequency bending and stretching conditions; impact resistant and fatigue wear resistant.
— Service life: The hardened layer is wear-resistant and durable, and is not prone to wear, deformation, loosening, or failure during long-term operation.

The SSY005259885 main pin shaft boasts superior original factory craftsmanship, sufficient hardness, and robust load-bearing capacity, making it compatible with all Sany tracked engineering machinery. It effectively resolves issues such as pin wear, looseness, bending, corrosion, and abnormal noise in the articulation, restoring the precision of the equipment’s articulation fit, eliminating malfunctions such as vibration, excessive clearance, and oil leaks, improving operational accuracy and stability, extending the service life of articulation components, and reducing maintenance and downtime costs. It is a high-quality original articulation component for equipment maintenance, fault replacement, and bulk procurement.

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1 SSY005259885 Main pin shaft
2 SSY005239999 Main Selling Set
3 131902070002A Track pad
4 SSY005237969 Pin
5 SSY005238115 Pin sleeve
6 151402990030A Track pad
7 151402990031A Rotary shaft lip seal
8 SSY005258815 Track Link
9 SSY005259388 Track Link
10 SSY005244289 Track Link
11 SSY005248503 Track Link
12 A210414000032 retaining ring
13 SSY007739487 Track assembly

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