OEM 61000220 Thrust Plate Upper – Genuine SANY Engine Axial Support Component

The genuine SANY parts reference 61000220 is the Thrust Plate Upper, a precision-engineered component that forms the upper half of the crankshaft thrust bearing system in SANY heavy-duty diesel engines. This thrust plate is part of the SANY Thrust Plate Group, a specialized system designed to manage axial loads and maintain precise crankshaft positioning within the engine assembly.

The 61000220 thrust plate works in concert with the Thrust Plate Lower (61000219) to control crankshaft end float and prevent excessive axial movement during engine operation. These precision-machined plates are manufactured from high-grade materials with advanced surface treatments to withstand extreme pressure and minimize wear while ensuring optimal oil retention and distribution across bearing surfaces.

The thrust plate upper 61000220 is a critical component that interfaces directly with the crankshaft thrust flange, maintaining the crankshaft axial end play within specification (typically 0.07 to 0.17 mm for new engines). When excessive axial movement occurs due to wear or incorrect installation, critical engine components such as connecting rods, main bearings, and cylinder walls can suffer severe damage.

Each 61000220 thrust plate is manufactured to precise dimensional tolerances with a high-strength overlay design that provides superior embeddability and conformability. Every unit undergoes 100% dimensional inspection and hardness testing to guarantee perfect fitment in SANY engine blocks and long service life.

Thrust Plate, Upper

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Metallurgical Design of Thrust Plate 61000220

The thrust plate upper 61000220 is manufactured using a precision bi-metal or tri-metal composite construction. The steel backing is formed from low-carbon steel strip (typically SAE 1010 specification) with a thickness of approximately 1.5 mm, providing structural rigidity and resistance to high cyclic axial loads.

The intermediate load-bearing layer is a copper-lead or aluminum-tin alloy that serves as the primary load-carrying material. This layer is carefully bonded to the steel backing through a sintering process at elevated temperatures, creating a metallurgical bond that prevents separation under extreme bearing pressures.

The overlay is the final functional layer, composed of a soft, sacrificial material with a thickness of approximately 0.01-0.03 mm. This soft overlay provides the critical run-in characteristics, allowing the thrust plate to conform to the crankshaft thrust flange surface during the first hours of engine operation.

The working surface of the 61000220 thrust plate is precision-ground to achieve a surface finish of Ra ≤ 0.8 µm, providing optimal oil film retention. Strategically positioned oil grooves extend across the working face to ensure a continuous supply of pressurized engine oil between the thrust plate and the crankshaft flange.

Critical Applications & Machine Compatibility

The thrust plate upper 61000220 is a core component of the SANY Thrust Plate Group (assembly number 160102130004A043) and is used in a wide range of SANY heavy machinery. This includes SRT series dump trucks (SRT45, SRT55, SRT95, SRT115), wheel loaders (SW305, SW405, SW435, SW465), crawler excavators (SY215, SY335, SY395, SY500, SY95C), and motor graders (SMG200, SMG220).

The thrust plate upper is also installed on SANY concrete pump trucks and crawler cranes equipped with SANY’s heavy-duty diesel engines, including the D06, D09, and D12 engine series. Within the SANY Crankshaft Group (160102130004A041), the thrust plate upper and lower work together to maintain precise crankshaft axial positioning.

The thrust plate upper is installed in the upper half of the center main bearing journal (typically main bearing number 3), while the thrust plate lower is installed in the corresponding main bearing cap. Together, they provide full 360° axial contact with the crankshaft thrust flange, controlling end play and ensuring that the crankshaft does not shift excessively under operational loads.

The thrust plate upper is secured in position by the main bearing cap and the main bearing bolts. In the SANY Front End Cover Group catalog, the thrust plate assembly is installed using four Bolt, Hexagon Flange components (part numbers 61000172 and 61000173) with an installation quantity of two of each fastener.

Technical Specifications – Thrust Plate Upper 61000220

Integration within SANY Thrust Plate Group

The thrust plate upper 61000220 is a fundamental component of the SANY Thrust Plate Group (assembly number 160102130004A043), a precision-engineered axial load management system within SANY engines. This specialized group consists of two complementary elements: the Thrust Plate Lower (61000219) and the Thrust Plate Upper (61000220), which work in concert to control crankshaft end float and prevent axial movement during engine operation.

The Thrust Plate Group is itself integrated into the larger SANY Crankshaft Group (assembly number 160102130004A041), which represents the complete rotating assembly of the engine. The sophisticated design of the SANY Thrust Plate Group ensures optimal oil retention and distribution across bearing surfaces, contributing to reduced friction and enhanced engine efficiency.

The thrust plate upper is installed in the upper half of the engine cylinder block at the main bearing position that serves as the thrust journal. On most SANY 6-cylinder inline engines, the center main bearing (journal #3) incorporates the thrust plate system. The lower thrust plate is installed in the corresponding main bearing cap.

The thrust plates are captured between the main bearing cap and the cylinder block, with the crankshaft thrust flange rotating between them. Pressurized engine oil is supplied through the main bearing oil feed to the thrust plate surfaces, creating a hydrodynamic film that prevents metal-to-metal contact under normal operating conditions.

Proper Installation of Thrust Plate 61000220

When installing the thrust plate 61000220 during engine assembly or overhaul, meticulous cleanliness and precise alignment are essential. Begin by thoroughly cleaning the thrust plate recess in the cylinder block and the mating surface of the main bearing cap. Ensure that the oil feed holes are clear of debris.

Inspect the crankshaft thrust flange for scoring, galling, or uneven wear — if any damage is present, the crankshaft must be replaced or reconditioned before proceeding. The thrust plate upper is installed with the oil groove facing toward the crankshaft thrust flange and the identification markings visible.

After installing the crankshaft and before torquing the main bearing caps, position the thrust plate upper into its recess in the cylinder block. Install the main bearing cap with the thrust plate lower (61000219) properly seated. Apply thread lubricant to the main bearing cap bolts.

After final torquing, measure the crankshaft end play using a dial indicator. Pry the crankshaft toward the rear of the engine, zero the dial indicator, then pry it toward the front. The measured axial clearance must be between 0.07 mm and 0.17 mm for a new engine. If the clearance is out of specification, check that the thrust plates are correctly seated and that the crankshaft thrust flange is not worn.

Quality Assurance & Full Traceability

Every thrust plate upper 61000220 is manufactured in an IATF 16949 certified facility under SANY’s rigorous quality management system. The production process includes raw material certification of the steel strip, overlay alloy composition verification by spectrometer, and 100% dimensional inspection using precision micrometers and vision systems.

A sample from each production batch is subjected to metallurgical cross-section analysis to confirm bond integrity and layer thickness. Hardness testing is performed on the steel backing, the intermediate layer, and the overlay to ensure compliance with SANY’s material specifications.

Each thrust plate upper is laser marked with the SANY logo, part number 61000220, and a batch code that enables full traceability to the original manufacturing data. This traceability system allows SANY to retrieve all quality records instantly if a field issue arises.

For bulk orders, a Certificate of Conformance (CoC) is provided, certifying that the thrust plates meet all SANY OEM specifications. Independent third-party audits ensure continuous compliance with ISO 9001:2015 and IATF 16949 standards.

Proven Field Durability of Genuine SANY Thrust Plate

Field data collected from SANY dump trucks operating in Australian iron ore mines and South African quarries shows that genuine SANY thrust plates (61000220 and 61000219) have an average service life exceeding 20,000 operating hours with minimal axial clearance increase. In contrast, aftermarket thrust plates often fail within 8,000-12,000 hours.

The superior durability of the genuine SANY thrust plate is attributed to the precision overlay composition, the optimized oil groove design, and the controlled manufacturing process that ensures consistent quality from batch to batch. Fleet owners report a 50% reduction in bottom-end engine failures related to axial movement.

To maximize service life, always install new thrust plate upper and lower components during an engine overhaul — do not reuse old thrust plates. Always use genuine SANY bolts (61000172 and 61000173) to secure the thrust plate assembly, as these fasteners are designed to provide the precise clamping force required for proper axial clearance.