- ADDRESS：Jinan City, Shandong Province
- Wanda Plaza, Jinan, Shandong, China
- +8617615809553
- info@deruna.com
The SPYJ0000001220 Upper Bearing Bush (Narrow) is a precision-engineered suspension component designed to provide reliable, low-friction support in space-constrained pivot points of heavy-duty trucks. As a premier supplier of genuine Sinotruk Homan parts, we offer this narrow bearing bush as a direct OEM replacement for SINOTRUK Homan steering and suspension systems, ensuring exact fitment and exceptional wear resistance. The SPYJ0000001220 features a compact bronze-steel composite design with a reduced width, optimized for applications where axial space is limited, while still delivering high load capacity and durable performance under heavy loads and frequent articulation.
This upper bearing bush is manufactured using a high-strength steel backing with a sintered bronze layer, providing excellent conformability, embeddability, and self-lubricating properties. Its narrow profile makes it ideal for use in tight suspension linkages, steering knuckles, and balance beam pivots where standard-width bushes cannot be accommodated. Despite its compact size, the SPYJ0000001220 maintains robust load-carrying capability and resists wear, shock, and corrosion, contributing to improved vehicle handling and reduced maintenance intervals.
OEM direct replacement • Narrow profile • Bronze-steel composite • Self-lubricating
The SPYJ0000001220 upper bearing bush is designed for applications where axial space is at a premium, yet robust load support is required. Its narrow width reduces the overall package size of the pivot joint, allowing engineers to optimize suspension geometry without compromising strength. The bi-metal construction – a steel backing for structural integrity and a sintered bronze layer for low friction – ensures reliable operation under high static and dynamic loads.
The sintered bronze layer is oil-impregnated, providing a self-lubricating effect that minimizes wear and reduces maintenance frequency. This is particularly beneficial in applications where regular greasing is difficult or where contamination is a concern. The narrow profile also reduces the overall weight of the suspension component, contributing to fuel efficiency and improved vehicle dynamics.
Each bush is precision-machined to tight tolerances, ensuring a consistent interference fit in the housing and a smooth running clearance on the pin. The SPYJ0000001220 is a direct replacement for the original part, eliminating the need for additional modifications. Its durable construction and high-quality materials make it a reliable choice for SINOTRUK Homan trucks operating in diverse environments, from highway transport to off-road construction.
The SPYJ0000001220 upper bearing bush is specifically designed for SINOTRUK Homan trucks, including Howo A7, T7H, and Homan series, where it is used in upper suspension arms, steering knuckle upper pivots, and other tight-clearance applications. Its narrow width allows it to fit in locations where a wider bush would interfere with adjacent components.
This bush is also compatible with many other commercial vehicles and off-highway equipment that require a 45x55x25 mm bearing bush. It is commonly employed in agricultural machinery, construction loaders, and military vehicles, where space is at a premium but load support is critical.
Before installation, always confirm that the housing bore and pin are within tolerance. The SPYJ0000001220 is designed for a press-fit and should be installed using appropriate tools to prevent damage to the bronze layer.
Installing the SPYJ0000001220 requires careful preparation. Clean the housing bore and the pin thoroughly, removing all dirt, rust, and old lubricant. Inspect the pin for scoring, ovality, or wear; if damaged, replace or recondition it before fitting the new bush.
Using a suitable press or arbor, press the bush into the housing with even force on the outer ring (steel backing). Ensure the bush is fully seated against the shoulder or flush with the housing face. After installation, check the internal diameter with a plug gauge to confirm that the bush has not been deformed.
Apply a light coating of clean grease to the pin and the bush’s inner surface prior to assembly to assist with initial lubrication. The self-lubricating properties will provide ongoing protection, but periodic inspection is recommended, especially in severe applications. Look for signs of excessive play, scoring, or corrosion.
If the bush becomes worn or loose, replace it immediately to prevent damage to the pin and surrounding components. Regular maintenance of suspension pivot points will significantly extend the life of the entire system.
Every SPYJ0000001220 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 batch is subjected to rigorous material testing.
Each bush is 100% dimensionally inspected, including inner diameter, outer diameter, width, and roundness. Surface hardness and oil content are verified using calibrated testing equipment. We also perform random static load tests to confirm that the bush meets its rated capacity of 85 kN.
Our quality team ensures that the SPYJ0000001220 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 SPYJ0000001220 upper bearing bush offers a compact, high-performance solution for suspension pivot points where space is limited. Its narrow profile, combined with the durable bronze-steel composite and self-lubricating properties, ensures reliable operation and extended service life in SINOTRUK Homan trucks.
By choosing this OEM-quality bush, you avoid 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 handling and safety, knowing that critical pivot points are supported by a high-quality component.
Invest in the SPYJ0000001220 Upper Bearing Bush (Narrow) 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.
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