OEM 805046557 The XCMG Bolt M12×70 (805046557) is a genuine OEM high‑strength fastener engineered for critical structural connections in XCMG hydraulic excavator assemblies. This precision bolt, identified by part number 805046557, is manufactured to exacting dimensional and mechanical specifications, ensuring reliable clamping force and joint integrity under extreme vibration, shock, and heavy loads encountered in construction, mining, and demolition operations.
Manufactured from high‑grade alloy steel with a precision‑rolled thread and a consistent head geometry, the 805046557 bolt delivers exceptional tensile strength, fatigue resistance, and shear capacity. Its M12 diameter and 70 mm grip length are precisely matched to XCMG’s original design requirements, guaranteeing a direct replacement that maintains the structural integrity and safety of your excavator’s frame, boom, arm, and attachment mounting points.
The 805046557 bolt features a corrosion‑resistant surface finish – typically zinc‑plated or geomet coated – that provides robust protection against rust, moisture, and chemical exposure, ensuring long‑term reliability even in the harshest job site conditions. The thread is carefully formed to ensure smooth engagement and consistent torque‑tension characteristics, enabling accurate and repeatable tightening with standard hand tools. By providing a dependable, high‑strength fastening solution, this bolt plays an essential role in preventing structural loosening, reducing maintenance frequency, and extending the service life of your excavator’s welded and bolted assemblies in the toughest working conditions.
The 805046557 bolt is manufactured from high‑grade alloy steel that has been carefully selected for its excellent combination of strength, toughness, and fatigue resistance. The material is heat‑treated to achieve property class 10.9, providing the high preload necessary to maintain joint clamping force under dynamic loading.
The precision‑rolled threads are formed after heat treatment, resulting in a work‑hardened surface that improves thread strength and reduces the risk of galling during installation. The controlled thread geometry ensures consistent torque‑tension relationship, enabling accurate tightening with standard torque wrenches.
The hex head is designed to full flange height, providing a generous bearing surface that distributes clamping load evenly and minimises the risk of embedding into softer materials. The head dimensions comply with ISO 4014 standards, ensuring compatibility with standard sockets and wrenches.
By providing a reliable, high‑strength fastening solution, the 805046557 ensures that critical structural joints remain secure throughout the machine’s operating life, reducing the risk of loosening and fatigue failure.
Whether used in chassis assembly, boom pivot connections, or attachment mounting, this bolt delivers dependable performance that keeps your XCMG excavator operating safely and productively.
The 805046557 bolt is produced using a multi‑step manufacturing process that includes cold heading, thread rolling, heat treatment, and surface finishing. Cold heading ensures consistent material flow and grain structure, while thread rolling produces a smooth, fatigue‑resistant thread profile.
The heat treatment process – typically quenching and tempering – is precisely controlled to achieve the required mechanical properties without compromising ductility. This balance is essential for applications that experience both high static loads and impact shocks.
The zinc‑plated or Geomet® coating provides excellent corrosion protection, with salt spray resistance exceeding 200 hours. The coating also offers good lubricity, aiding in controlled tightening and reducing the risk of thread galling. For applications requiring additional protection, a wax or oil topcoat can be applied.
After production, each batch undergoes dimensional inspection, hardness testing, and tensile verification to ensure compliance with the specified property class. Sample bolts are subjected to torque‑tension testing to validate the friction characteristics.
The result is a bolt that delivers consistent, reliable performance throughout the service life of your XCMG excavator.
The structural integrity of an excavator depends on the reliability of its bolted joints. Bolts are used extensively in the chassis, boom, arm, and attachment interfaces, where they are subjected to high cyclic loads, impact forces, and bending moments.
The 805046557 bolt is designed to maintain its clamping force even under fluctuating loads, thanks to its high proof load and resistance to self‑loosening. The controlled thread fit and appropriate surface finish ensure that the bolt remains secure, reducing the risk of joint separation or fatigue failure.
Field data from heavy excavation operations shows that using genuine XCMG fasteners significantly reduces the frequency of structural joint inspections and maintenance, improving machine uptime and operator confidence.
The bolt’s corrosion‑resistant finish protects against rust and pitting, which can weaken the bolt and compromise joint integrity. Regular inspection of bolts for signs of corrosion, stretching, or wear is recommended; any damaged bolts should be replaced promptly with genuine 805046557 components.
By maintaining secure, properly torqued bolted joints, this bolt plays a vital role in ensuring safe, productive excavator operation.
The 805046557 bolt is designed for straightforward installation using standard hand tools. Before installation, ensure that the mating threads and bearing surfaces are clean and free from dirt, oil, or debris.
Apply a small amount of thread lubricant (if specified) to achieve the recommended torque for lubricated conditions. Insert the bolt through the aligned holes and start the nut (or thread into the tapped hole) by hand to avoid cross‑threading.
Tighten the bolt using a calibrated torque wrench to the recommended torque value, following a cross‑pattern if multiple bolts are used in a joint. For critical applications, consider using torque‑angle tightening for more accurate preload control.
After tightening, mark the bolt head and nut with a torque stripe to allow visual verification of any loosening during subsequent inspections. During routine maintenance, inspect the bolt for any signs of corrosion, thread damage, or loosening. Replace any compromised bolts promptly.
Periodic re‑torquing of critical joints is recommended according to the machine’s maintenance schedule.
Investing in the genuine 805046557 bolt delivers significant long‑term savings by preventing structural joint failures, reducing unplanned downtime, and avoiding costly repairs due to damaged components.
Substandard aftermarket bolts may not meet the required mechanical properties or dimensional tolerances, leading to premature loosening, thread stripping, or fatigue fracture. The 805046557’s superior material and manufacturing quality eliminate these risks.
Over a typical 10,000‑hour service life, the bolt’s robust construction ensures consistent clamping force, reducing the need for repeated re‑torquing or replacement. By maintaining joint integrity, the bolt also protects mating components from fretting and wear.
Field data from large‑scale mining and construction operations shows that using genuine XCMG fasteners reduces structural‑related downtime by up to 15%.
The bolt’s durable coating and corrosion‑resistant materials ensure it remains serviceable even after years of exposure to harsh conditions, eliminating the need for premature replacement.
XCMG is committed to sustainable manufacturing practices, and the 805046557 bolt reflects this through its use of recyclable steel and energy‑efficient production processes. The bolt’s long service life reduces material waste and the environmental impact associated with frequent replacements.
By preventing structural failures, the bolt also helps avoid secondary damage and environmental contamination, supporting regulatory compliance and environmental stewardship. The materials used are free from heavy metals and comply with RoHS and REACH regulations, ensuring safe handling and disposal at end‑of‑life.
Choosing genuine XCMG fasteners supports responsible equipment management while delivering superior operational reliability and safety.
The 805046557 bolt is stocked in XCMG’s regional distribution centres across North America, Europe, Asia, and Australia, ensuring rapid availability to support your maintenance schedules and minimise downtime. Bolts are individually packaged in protective anti‑rust bags and custom‑fitted cartons to prevent damage and contamination during transit and warehousing.
For large fleet orders, XCMG offers volume‑based pricing and consolidated shipping options to optimise procurement costs and simplify inventory management. Real‑time inventory visibility and dedicated supply chain support ensure that urgent requirements are fulfilled with minimal lead times, reducing downtime and keeping your excavator fleet productive.
The robust packaging protects the bolt from moisture and physical damage during storage, preserving its condition until installation. With XCMG’s global aftermarket network, you can rely on consistent product quality and availability to keep your fleet performing optimally.
Every 805046557 bolt is manufactured in an ISO 9001 and ISO 14001 certified facility with full material traceability from raw steel to finished product. Incoming raw materials are tested for chemical composition and mechanical properties to ensure they meet the required specifications.
During production, critical parameters such as head dimensions, thread profile, and coating thickness are continuously monitored, and a 100% dimensional inspection is performed on every finished bolt. Sample units from each batch are subjected to tensile testing, hardness testing, and torque‑tension testing to verify mechanical performance.
Sample units from each production batch are also subjected to thermal cycling, vibration testing, and salt spray testing to validate long‑term durability and performance. Only bolts that pass all quality checks are released, ensuring that you receive a reliable, high‑performance fastener.
Aftermarket bolts often use inferior steel grades, imprecise threads, or inadequate coatings that lead to premature loosening, stripping, or corrosion. The genuine 805046557 is engineered to XCMG’s exacting standards, ensuring correct dimensions, mechanical properties, and corrosion protection for optimal joint integrity.
Its superior material quality and precision manufacturing deliver consistent performance, reducing the risk of costly structural failures and unplanned downtime. Genuine XCMG parts preserve warranty coverage, maintain equipment resale value, and ensure compatibility with other OEM systems and components.
Backed by XCMG’s global quality standards and technical support, you can trust the performance and reliability of this bolt. Choose genuine XCMG for uncompromising fastening in the toughest operating conditions.
The XCMG 805046557 Bolt M12×70 is a critical structural fastener for any XCMG hydraulic excavator, providing the high‑strength, reliable connection needed for safe and productive operation in the harshest environments.
Its precision‑engineered design, premium materials, and robust manufacturing deliver dependable fastening performance, ensuring that critical joints remain secure throughout the machine’s service life. By preventing loosening and fatigue failure, this bolt reduces downtime, lowers maintenance costs, and extends machine service life.
Always source genuine XCMG parts from authorised dealers to guarantee authenticity, quality, and performance. Choose the 805046557 bolt for dependable structural fastening and lasting operational peace of mind.
Partner with XCMG – your trusted source for heavy equipment fastening solutions that deliver real value.
OEM 805046557 – XCMG Bolt M12×70 – the definitive high‑strength fastener solution for your excavator’s structural assemblies. Engineered for durability, designed for precision, and backed by global quality standards. Trust the original to protect your investment and maximise uptime.
