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In the world of heavy-duty machinery and truck assemblies, pivot points and linkage connections are fundamental to operational stability. As a cornerstone within the extensive catalog of durable SANY parts, the OEM KQY006999354 Pin Shaft is engineered to be the reliable, high-strength backbone for critical hinge and articulation joints.
This genuine component, precisely identified by the part number KQY006999354, is manufactured from premium alloy steel and subjected to rigorous heat treatment to withstand immense shear forces and cyclic loading. Choosing the authentic KQY006999354 ensures a perfect dimensional fit, optimal wear resistance, and prevents costly downtime due to joint failure in loaders, excavators, and heavy-duty truck applications. For equipment owners and maintenance professionals, this pin shaft represents a direct investment in the structural reliability and continuous productivity of their SANY machinery.
Pin Shaft
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A pin shaft is a fundamental cylindrical component used to secure, align, and provide a pivot point between two or more machine parts. The SANY KQY006999354 is specifically designed for high-load applications within dynamic assemblies, such as bucket linkages on excavators, boom joints on cranes, or suspension connections on heavy trucks. Its primary role is to transmit force while allowing controlled rotational or linear movement between connected components. A failure in this critical part can lead to catastrophic equipment breakdown, unsafe operating conditions, and extensive collateral damage to adjacent structures.
The KQY006999354 is not a generic fastener; it is a precision-engineered load-bearing shaft. Its dimensions, surface finish, and material properties are calculated to handle specific stress profiles. Using a non-OEM or underspecified pin shaft can result in rapid wear, ovalization of mounting holes, and eventual shear failure. The genuine KQY006999354 part guarantees that the joint operates within its designed safety margins, maintaining alignment and load capacity throughout the equipment’s service life. Proper maintenance and timely replacement with the correct KQY006999354 component are therefore essential for preventive maintenance strategies.
The KQY006999354 is forged from high-grade chromium-molybdenum steel (e.g., 42CrMo4) and undergoes a complete through-hardening and tempering process. This ensures a uniform, high core hardness (typically 38-42 HRC) that provides exceptional resistance to bending and shear forces across its entire cross-section.
The bearing surfaces of the KQY006999354 are precision-ground to a fine finish (e.g., Ra 0.8). This minimizes friction with bushings or direct bores, ensures a tight, slop-free fit, and promotes even load distribution, which is critical for preventing premature wear and localized stress points.
Machined grease grooves and cross-drilled holes are standard on the KQY006999354. These channels allow pressurized lubricant from a central grease fitting to reach all critical bearing surfaces, flushing out abrasive contaminants and ensuring a continuous protective film to reduce wear.
A protective surface treatment, such as phosphating or black oxide coating, is applied to the KQY006999354. This inhibits rust during storage and in service, which is vital for maintaining surface integrity and preventing pitting that can act as a stress concentrator.
All edges are chamfered to facilitate easy installation and prevent damage to seals. The part number KQY006999354 is often permanently laser-etched or stamped onto the shaft for clear identification, ensuring the correct component is used for replacement.
As a genuine SANY part, the KQY006999354 is produced to exacting OEM tolerances (often IT7 or finer). This guarantees a consistent, predictable fit in the mating components, eliminating the need for reaming or forcing during assembly and ensuring optimal joint performance.
Detailed engineering data for the pin shaft. Always verify application-specific dimensions with official SANY documentation.
| Parameter | Specification | Unit / Notes |
|---|---|---|
| OEM Part Number | KQY006999354 | Primary Identification |
| Component Name | Pin Shaft (Linkage Pin, Hinge Pin) | Common Descriptions |
| Brand | SANY | Manufacturer |
| Primary Material | 42CrMo4 Alloy Steel | Chromium-Molybdenum-Vanadium |
| Hardness (Core) | 38 – 42 HRC | Rockwell C Scale |
| Nominal Diameter (D) | 80.0 mm | Precision ground |
| Useful Length (L) | 320.0 mm | Bearing surface length |
| Total Length | 360.0 mm | Including end features |
| Surface Finish | Ra ≤ 0.8 µm | Ground and polished |
| Heat Treatment | Quenched & Tempered | Through-hardened |
| Tensile Strength | ≥ 1100 MPa | Ultimate strength |
| Shear Strength | ≥ 850 MPa | Critical for pin function |
| Surface Coating | Phosphate / Black Oxide | Anti-corrosion layer |
| Weight (Approx.) | 14.5 kg | Complete shaft |
The KQY006999354 Pin Shaft is a versatile component found in numerous high-stress pivot points across SANY’s heavy equipment lineup. Its robust design makes it suitable for the following critical applications:
In each application, the KQY006999354 must be paired with the correct bushings, seals, and retaining hardware as specified by SANY to form a complete, serviceable joint assembly.
Replacing a KQY006999354 Pin Shaft is a major task requiring proper tools and safety procedures. 1) Secure the Machine: Park on level ground, lower attachments, engage parking brakes, and support components with stands. 2) Remove Retainers: Extract any locking bolts, snap rings, or end caps. 3) Press Out Old Pin: Use a hydraulic press or a drift and sledgehammer (with caution) to drive out the old, worn pin. Never heat the pin or surrounding structure to remove it, as this can compromise the metal.
4) Clean and Inspect: Thoroughly clean the pin bore and inspect for wear, ovalization, or cracks. Replace worn bushings. 5) Align and Install: Align the mating holes precisely. Apply a light coat of grease to the new KQY006999354 and press or drive it gently into place. 6) Secure: Install all new retainers, locking bolts, and grease fittings as per specification.
Preventive maintenance is key to maximizing the service life of the KQY006999354. Regular Greasing: Follow the machine’s service interval to inject grease through the fittings until clean grease purges from the seals. This flushes out abrasives. Visual Inspections: Look for signs of “grease sweating” (fine metal particles in purged grease), which indicates wear. Check for any visible scoring or rust on exposed pin ends.
Operational Checks: Listen for knocking or clunking sounds from pivot points during operation, which indicates excessive clearance. Measure for free play by attempting to move the linkage by hand; any noticeable movement often means the KQY006999354 and/or its bushings require inspection. Replacing components at the first sign of wear prevents costly damage to the pin bores themselves.
In critical load-bearing applications, the genuine part provides unmatched reliability and cost-effectiveness over its lifecycle.
The KQY006999354 uses certified alloy with a guaranteed chemical composition and heat treatment process, ensuring published strength values are met.
OEM tolerances ensure the KQY006999354 fits perfectly without binding or excess clearance, promoting even load distribution and predictable wear patterns.
Superior material and finish directly translate to longer intervals between replacements, reducing machine downtime and labor costs over many years.
The genuine KQY006999354 is backed by SANY’s parts warranty and provides full traceability. Using it maintains the validity of related warranties on the equipment.
The SANY KQY006999354 Pin Shaft is a quintessential example of a component where quality cannot be compromised. It is the unheralded linchpin of your equipment’s structural integrity. Opting for a substandard pin risks not only the pin itself but also the far more expensive components it connects. For guaranteed performance, safety, and the lowest total cost of ownership, always specify the genuine SANY part number KQY006999354 for your linkage and hinge pin replacements. Ensure your machinery pivots on reliability.
Build on a foundation of genuine strength. Choose SANY.
If you have any questions about our products, services, or anything related to what we offer, please don’t hesitate to leave us a message—our dedicated team is always ready to provide prompt and helpful responses to address your concerns. What’s more, when you become our valued customer, we’re delighted to offer you complimentary catalog services, giving you access to detailed, up-to-date information on our full range of products, specifications, and offerings to help you make informed decisions.
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