- ADDRESS：Jinan City, Shandong Province
- Wanda Plaza, Jinan, Shandong, China
- +8617615809553
- info@deruna.com
The SPYJ0000001222 Upper Bearing Bush (Wide) is a critical suspension component designed to provide stable, low-friction support for heavy-duty truck axles and steering systems. As a leading provider of genuine Sinotruk Homan parts, we offer this wide bearing bush as a direct OEM replacement for SINOTRUK Homan trucks, ensuring precise fitment and exceptional durability. The SPYJ0000001222 features a robust bronze-steel composite construction with a wide bearing surface, engineered to distribute loads evenly and resist wear under extreme operating conditions, including heavy payloads and rough terrain.
This upper bearing bush is manufactured using high-strength alloy steel backed with a sintered bronze layer, providing excellent conformability and embeddability. Its wide design increases the contact area, reducing surface pressure and extending service life. With its precise internal diameter and superior lubrication retention, the SPYJ0000001222 ensures smooth articulation of the suspension linkage, contributing to improved ride quality and vehicle stability.
OEM direct replacement • Wide bearing surface • Bronze-steel composite
The SPYJ0000001222 upper bearing bush is manufactured using a bi-metal process: a steel backing provides structural strength, while a sintered bronze layer offers excellent wear resistance and conformability. This combination ensures reliable performance in high-load, oscillating applications such as suspension pivot points and steering kingpins.
The wide design increases the bearing area, which reduces specific loading and heat generation. This is particularly beneficial for heavy-duty trucks that frequently operate at maximum gross weight or on uneven surfaces. The bush is designed to retain lubricant within its porous bronze structure, providing a constant oil film that minimizes friction and wear.
Each bush is precision-machined to tight tolerances, ensuring a perfect match with the mating pin or shaft. The SPYJ0000001222 is a direct replacement for the original part, eliminating the need for costly modifications. Its robust construction and quality materials ensure long service intervals, reducing vehicle downtime.
The SPYJ0000001222 upper bearing bush is primarily used in SINOTRUK Homan heavy-duty trucks, including Howo A7, T7H, and the Homan series, in front and rear suspension systems, as well as in steering knuckle and balance beam applications. Its wide design makes it especially suitable for vehicles that operate under high articulation loads.
This bush is also compatible with many other commercial vehicles and off-highway equipment that use similar dimensions (45x55x40 mm). It is commonly found in construction machinery, agricultural tractors, and military vehicles that require durable, low-maintenance pivot joints.
When replacing, ensure the housing bore and pin are within specification. The SPYJ0000001222 is designed for a press-fit installation and should be installed using appropriate tools to prevent damage.
Installing the SPYJ0000001222 requires careful preparation. Clean the housing bore and the mating pin thoroughly, removing all dirt, corrosion, and old lubricant. Inspect the pin for scoring or out-of-round conditions; if damaged, it must be replaced or reconditioned.
Press the bush into the housing using a suitable arbor press or a hydraulic press. Apply force evenly to the outer ring of the bush to avoid distortion. Ensure the bush is seated fully against the shoulder or flush with the housing face. After installation, check the internal diameter for any deformation.
During assembly, apply a thin layer of clean grease to the pin and the bush’s inner surface to assist with initial lubrication. The bush’s self-lubricating properties will provide ongoing lubrication, but regular inspection for play or wear is recommended, especially in severe service conditions.
If the bush becomes worn or develops excessive clearance, replace it promptly. Ignoring wear can lead to pin damage, alignment issues, and accelerated wear of other suspension components.
Every SPYJ0000001222 upper bearing bush is produced under strict ISO 9001 quality management. The steel backing is sourced from certified mills, and the sintered bronze layer is applied using controlled powder metallurgy processes to ensure uniform porosity and oil retention.
Each bush is 100% dimensionally inspected, including inner diameter, outer diameter, width, and roundness. We also perform surface hardness tests and oil-content checks to verify that the bush meets the required specifications. Random samples are subjected to load tests to confirm static load capacity.
Our quality team ensures that the SPYJ0000001222 delivers consistent, reliable performance in the field. The combination of high-quality materials and precision manufacturing results in a bush that provides long service life and reduces maintenance costs.
With our commitment to quality, you can trust this bush to perform as expected in the most demanding suspension applications.
The SPYJ0000001222 upper bearing bush is a fundamental component for maintaining suspension integrity and vehicle stability in SINOTRUK Homan trucks. Its wide bearing surface, self-lubricating properties, and robust construction ensure reliable performance under the most demanding conditions, reducing wear and extending the life of pivot joints.
By choosing this OEM-quality bush, you eliminate fitment issues and ensure that your suspension operates with the correct clearances. This reduces the risk of premature pin wear, alignment problems, and costly downtime. The self-lubricating feature also minimizes maintenance requirements, saving time and labor costs.
Fleet operators will appreciate the extended service intervals and reduced unscheduled repairs. Owner-operators will gain confidence in their vehicle’s safety and handling, knowing that critical suspension points are supported by a high-quality component.
Invest in the SPYJ0000001222 Upper Bearing Bush (Wide) and experience the difference that a genuine SINOTRUK Homan part makes. Its proven reliability and durability make it the intelligent choice for professionals who demand excellence.
Upgrade your suspension with this premium bush and keep your truck operating smoothly and safely for miles to come.
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.
We are a first-class heavy duty vehicles and spare parts supplier in China. which covers from engine, gearbox, cab, axle assemblies to main assembly accessories, electrical parts and other chassis parts like brake, clutch and steering parts.
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