OEM 800374126 The XCMG Rack (800374126) is a genuine OEM precision‑engineered structural component designed for critical steering and lift applications on XCMG articulated dump trucks. This high‑strength rack, identified by part number 800374126, ensures reliable linear motion transmission, accurate positioning, and exceptional durability in the most demanding mining, quarrying, and heavy construction environments worldwide.
Manufactured from high‑grade alloy steel (42CrMo4 / 4140 equivalent) with precision‑machined tooth profiles, heat‑treated for optimal surface hardness, and coated with a corrosion‑resistant finish, the 800374126 rack delivers consistent load‑bearing capacity, excellent wear resistance, and exceptional reliability across a wide temperature range (-40°C to +120°C). Its precision‑engineered dimensions and exacting tolerances guarantee a perfect, drop‑in fit without modification.
The 800374126 rack features precision‑ground gear teeth that ensure smooth, backlash‑free engagement with the mating pinion, a carefully designed cross‑section that optimizes strength‑to‑weight ratio, and a corrosion‑resistant coating that ensures long‑term serviceability, making it an essential component for maintaining steering responsiveness, lift system accuracy, and overall machine controllability, while maximising uptime in your ADT fleet.
The 800374126 Rack is manufactured from premium alloy steel with precision‑machined tooth profiles and case‑carburised for optimal surface hardness, ensuring consistent linear motion, reliable load transmission, and predictable performance across every unit.
Its precision‑ground gear teeth provide a smooth, backlash‑free interface with the mating pinion, minimising wear and ensuring accurate positioning throughout the rack’s service life.
The carefully designed cross‑section and tooth geometry optimise strength‑to‑weight ratio, reducing stress concentrations and preventing tooth breakage under high‑load cyclic operation.
The case‑carburising and hardening processes optimise the rack’s mechanical properties, delivering excellent resistance to tooth wear, pitting, and bending fatigue, maintaining its original profile and load capacity over extended service intervals.
The corrosion‑resistant zinc‑nickel or manganese phosphate coating provides a durable barrier against rust, pitting, and chemical attack, ensuring the rack remains serviceable even in wet, chemically aggressive mining environments.
In demanding applications such as open‑pit mines, aggregate quarries, and heavy construction sites, the 800374126 delivers reliable, long‑lasting rack performance for your ADT’s steering and lift systems.
The 800374126 rack is produced using advanced forging, machining, heat treatment, and grinding processes, achieving tight tolerances on all critical dimensions, including tooth profile, pitch, overall length, and surface finish.
The alloy steel (42CrMo4 / 4140) is carefully selected for its excellent hardenability, toughness, and fatigue resistance, ensuring reliable performance under high‑load cyclic operation and severe impact conditions.
The case‑carburising process includes a controlled carbon potential atmosphere, followed by oil quenching and low‑temperature tempering, achieving the optimal balance of surface hardness (58‑62 HRC) and core toughness.
The gear teeth are precision‑ground to a fine surface finish (Ra ≤ 0.8 µm) to ensure smooth meshing, reduce friction, and minimise heat generation during high‑speed operation.
After production, each rack undergoes 100% dimensional inspection, hardness testing, and magnetic particle inspection to ensure it meets the required specifications.
Sample units from each production batch are subjected to fatigue testing, load testing, and corrosion testing to validate long‑term durability and performance.
Articulated dump trucks rely on racks to convert rotary motion from the steering gear into linear motion for wheel articulation, and to provide precise lift cylinder control, making the quality and precision of each rack vital to overall machine controllability, safety, and reliability.
The 800374126 rack serves as a critical linear actuator element in these systems, transmitting force from the pinion to the steering linkage or lift mechanism with minimal backlash.
A substandard or worn rack can lead to steering play, lift inaccuracy, tooth breakage, and catastrophic system failure — risks that are eliminated by using genuine XCMG racks.
Field data from mining operations shows that ADTs equipped with genuine XCMG racks experience 35% fewer steering and lift‑related failures and a 25% reduction in unscheduled maintenance, directly improving machine availability and productivity.
The rack’s consistent tooth geometry and excellent material properties ensure reliable performance, maintaining precise steering control, smooth lift operation, and extended system life throughout the machine’s service life.
Regular inspection of racks for signs of tooth wear, pitting, or damage is recommended; any compromised racks should be replaced promptly with genuine 800374126 components.
The 800374126 rack is manufactured from high‑grade alloy steel that provides an exceptional combination of strength, toughness, and fatigue resistance, ensuring reliable performance under the most severe operating conditions.
The case‑carburising and hardening processes optimise the rack’s mechanical properties, delivering excellent resistance to tooth wear, pitting, and bending fatigue while maintaining a tough, ductile core.
The precision‑ground tooth profiles and accurately controlled geometry ensure even load distribution, reducing stress concentrations and extending rack life under high‑load, high‑cycle operation.
The corrosion‑resistant protective coating protects against rust and chemical attack, ensuring the rack remains serviceable even in harsh mining environments.
With proper installation and routine maintenance, the 800374126 rack can provide reliable service for the entire lifespan of the ADT, reducing the need for premature replacements.
The combination of high‑quality materials, precision manufacturing, and robust design makes this rack ideal for the most demanding off‑highway applications.
The 800374126 rack is specifically designed to fit XCMG’s full range of articulated dump trucks, including the XDA30, XDA40, XDA45, XDA45U, XDA60, and TA30 models, as well as their respective steering and lift system configurations.
Its tooth profile, pitch, and overall dimensions are identical to the original factory‑fitted component, ensuring a direct, drop‑in replacement without the need for modifications.
The rack is compatible with all standard pinions, bearings, and housings, simplifying inventory management and reducing the risk of incorrect part selection for fleet operators.
Whether used in hydraulic steering systems or lift cylinder linkages, the 800374126 rack provides consistent performance across all ADT applications, backed by XCMG’s engineering expertise.
For operators with mixed fleets, this rack offers the assurance of OEM quality and fitment, reducing the risk of mismatched components and system performance issues.
Always verify the specific application and rack specifications for your ADT model to ensure the correct component selection.
The 800374126 rack is designed for straightforward installation using standard workshop tools, minimising downtime and labour costs during routine servicing or component replacement.
Before installation, carefully inspect the rack for any signs of damage, corrosion, or tooth defects that may have occurred during storage or transport, and ensure that the mating pinion and housing are clean and properly lubricated.
Position the rack into its housing, ensuring correct tooth meshing with the pinion and proper end clearance, following the manufacturer’s recommended assembly procedures.
During assembly, tighten all retaining hardware to the specified torque values using a calibrated torque wrench, and verify that the rack moves smoothly without binding.
During routine maintenance, inspect the rack for signs of tooth wear, pitting, or damage, and replace it if any issues are detected.
Periodic cleaning and proper lubrication of the rack and pinion will help maintain optimal performance and extend service life.
Investing in the genuine 800374126 rack delivers significant long‑term savings by preventing steering and lift failures, maintaining system accuracy, and avoiding costly downtime that can result from substandard or worn racks.
A single steering or lift system failure due to a failed rack can cost over $4,000 in parts, labour, and lost production — a risk that is virtually eliminated with OEM‑quality components.
Over a typical 15,000‑hour service life, an ADT’s steering and lift systems can experience millions of cycles. The 800374126 rack’s robust construction and fatigue resistance ensure consistent performance throughout.
By maintaining precise gear meshing and load distribution, the rack also reduces wear on pinions, bearings, and housings, lowering overall maintenance costs and extending component life.
Field data from large‑scale mining operations shows that using genuine XCMG racks reduces steering and lift‑related downtime by up to 30%.
The rack’s durable materials and corrosion‑resistant finish ensure it remains serviceable even after years of exposure to harsh conditions, eliminating the need for premature replacement and reducing lifecycle costs.
XCMG is committed to sustainable manufacturing practices, and the 800374126 rack reflects this through its use of recyclable materials and energy‑efficient production processes.
The rack’s long service life, typically exceeding 12,000 hours in normal operating conditions, reduces material waste and the environmental impact associated with frequent replacements.
By maintaining steering and lift system efficiency and preventing component failures, the rack also helps prevent hydraulic leaks and secondary damage, supporting environmental stewardship and regulatory compliance.
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 steering and lift components supports responsible equipment management while delivering superior operational reliability and performance.
The rack’s robust, precision‑engineered design allows for reliable long‑term service, minimising resource consumption and waste generation.
The 800374126 rack 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.
Each rack is individually packaged in protective anti‑corrosion bags and custom‑fitted crates to prevent damage and surface degradation 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 ADT fleet productive.
The robust packaging protects the rack from corrosion 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 800374126 rack 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, tensile strength, and hardenability to ensure they meet the required specifications.
During production, critical dimensions such as tooth profile, pitch, and overall length are continuously monitored using automated gear measurement systems, and a 100% dimensional inspection is performed on every finished rack.
After heat treatment and grinding, each rack undergoes hardness testing, surface finish verification, and magnetic particle inspection to ensure it meets the required specifications.
Sample units from each production batch are subjected to fatigue testing, load testing, and corrosion testing to validate long‑term durability and performance.
Only racks that pass all quality checks are released, ensuring that you receive a reliable, high‑performance steering and lift component.
Aftermarket racks often use inferior materials, imprecise tooth profiles, or inadequate heat treatment that lead to premature wear, pitting, and costly system failures.
The genuine 800374126 is engineered to XCMG’s exacting standards, ensuring correct fit, consistent steering and lift performance, and long‑lasting durability for optimal system protection.
Its superior material quality and precision manufacturing deliver consistent performance, reducing the risk of costly breakdowns 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 rack.
Choose genuine XCMG for uncompromising rack performance in the toughest operating conditions.
The XCMG 800374126 Rack is an essential steering and lift component for any articulated dump truck, ensuring reliable linear motion, precise positioning, and long service life.
Its precision‑engineered design, high‑quality alloy steel construction, and robust manufacturing deliver consistent performance, enabling safe and productive operation in the harshest environments.
By safeguarding steering and lift systems, this rack 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 800374126 rack for dependable steering and lift performance and lasting operational peace of mind.
Partner with XCMG – your trusted source for heavy equipment steering and lift components that deliver real value.
OEM 800374126 – XCMG Rack – the definitive linear motion component for your ADT’s steering and lift systems. Engineered for durability, designed for precision, and backed by global quality standards. Trust the original to protect your investment and maximise uptime.
