OEM 61000191 Camshaft Thrust Plate – Genuine SANY Axial Positioning Component

The genuine SANY parts reference 61000191 is the Plate, Camshaft Thrust, a precision‑engineered thrust washer that controls the axial (end‑to‑end) movement of the camshaft in SANY heavy‑duty diesel engines. This thrust plate limits camshaft end float, ensuring that cam lobes remain properly aligned with the valve train components. The 61000191 camshaft thrust plate is manufactured from high‑strength hardened steel with precision‑ground bearing surfaces, delivering exceptional wear resistance and dimensional stability under millions of operating cycles. Each 61000191 unit is 100% inspected for flatness, thickness, and surface finish, guaranteeing reliable axial positioning in SRT dump trucks, SY excavators, SW wheel loaders, and motor graders.

As a vital component of the SANY Valve Train Group, the 61000191 Plate, Camshaft Thrust works in concert with the Camshaft Assembly (61000722), the cylinder head, and the camshaft bearing caps. It is typically installed at the front or rear of the camshaft, sandwiched between a camshaft journal and the engine block or a retaining flange. The 61000191 thrust plate absorbs axial thrust loads from helical timing gears, oil pump drives, and cam lobe forces while maintaining the camshaft within a specified end play range (typically 0.05‑0.20 mm). Each 61000191 unit is 100% inspected for thickness tolerance, parallelism, and surface hardness, guaranteeing reliable camshaft retention in the most demanding mining, construction, and material handling environments.

Plate, Camshaft Thrust

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Material and Design of Camshaft Thrust Plate 61000191

The camshaft thrust plate 61000191 is manufactured from high‑carbon or alloy steel (SAE 1045 or 42CrMo4 equivalent), heat‑treated to achieve a surface hardness of 50‑55 HRC. The plate is precision‑ground on both sides to ensure flatness and parallelism. Typical thickness ranges from 4 to 8 mm, with a tolerance of ±0.03 mm. The inner diameter of the thrust plate is machined to fit the camshaft journal, while the outer diameter is sized to seat against the engine block or bearing cap counterbore.

Some designs incorporate a tangential oil groove on one face to allow pressurized oil to lubricate the thrust interface. The groove may be straight or curved, connecting to an oil hole in the camshaft or block. The 61000191 plate may also have locating dowel holes or bolt holes to secure it to the engine block. The thrust plate must withstand axial forces from helical timing gears, which can reach hundreds of Newtons at high engine speeds.

All 61000191 camshaft thrust plates are 100% inspected for flatness using a precision straightedge and feeler gauges. Thickness is measured at multiple points with a micrometer. Hardness is verified using a Rockwell tester. The inner and outer diameters are checked with go/no‑go gauges. A batch code is stamped on the plate or packaging, providing full traceability to the material lot, heat treat batch, and final inspection records.

Integration Within the SANY Valve Train Group

The thrust plate 61000191 is a key component of the SANY Valve Train Group, which manages the precise timing of valve opening and closing. It is typically installed at the front end of the camshaft, between the camshaft timing gear and the engine block. The thrust plate is secured by two or three bolts to the cylinder head or block, and the camshaft journal bears against the plate, limiting forward axial movement. A rear thrust washer may also be used.

Proper camshaft end play is critical. If end play is too large, cam lobes can misalign with tappets, causing uneven valve lift, increased wear, and noise. If end play is too small, thermal expansion can cause binding, leading to camshaft seizure or bearing damage. The 61000191 thrust plate, in combination with a select‑fit shim or the natural clearance of the bearing journals, maintains end play within specification (typically 0.05‑0.20 mm).

During engine assembly, end play is measured with a dial indicator after the camshaft is installed and the thrust plate is torqued. If end play is out of spec, a different thickness thrust plate or shim may be required. Using a genuine SANY thrust plate ensures correct hardness, flatness, and thickness for the specific engine model.

Machine Compatibility & Critical Applications

The camshaft thrust plate 61000191 is used in SANY D09 and D12 series diesel engines powering SRT dump trucks (SRT45, SRT55, SRT95, SRT115), wheel loaders (SW405, SW435, SW465, SW305), crawler excavators (SY215, SY335, SY395, SY500), and motor graders (SMG200, SMG220). It is also installed on SANY concrete pump trucks, crawler cranes, and heavy forklifts.

The D09 engine is a straight‑6 diesel with 8.7 liters displacement, 117 mm bore, 135 mm stroke, producing 280‑380 HP and 1,500 N·m of torque. The D12 engine offers 12.13 liters displacement, 131 mm bore, 150 mm stroke, with torque reaching 700 N·m. Both engines utilize SANY’s patented TOP‑Down cooling system and split‑type cylinder head. The camshaft thrust plate must withstand axial loads from helical timing gears and oil pump drives.

For complete valve train reliability, the 61000191 thrust plate must be used together with genuine SANY camshafts, bearings, and timing gears. When overhauling an engine, measure camshaft end play – if out of specification, replace the thrust plate. Use genuine SANY plates to ensure correct thickness and hardness.

Technical Specifications – Plate, Camshaft Thrust 61000191

Proper Installation of Camshaft Thrust Plate 61000191

When installing the camshaft thrust plate 61000191, first ensure the camshaft is correctly positioned in its bearings. Clean the thrust plate mounting surface and the camshaft journal thoroughly. Apply a thin film of engine assembly lube to the thrust face of the plate. Position the plate over the camshaft journal, aligning any locating dowels or bolt holes. Install the mounting bolts and hand‑tighten them.

Torque the bolts to the value specified in the SANY workshop manual (typically 20‑30 N·m for M8 bolts, 40‑60 N·m for M10). Use a crisscross pattern if multiple bolts. After torquing, measure camshaft end play using a dial indicator. Mount the indicator on the engine block with the probe contacting the camshaft end or a timing gear. Push the camshaft fully forward and back, recording the total movement. End play should be within 0.05‑0.20 mm. If end play is excessive, the thrust plate may be worn; if insufficient, check for debris or incorrect shimming.

Never reuse a thrust plate that shows scoring, galling, or wear on the thrust face. Always replace the plate if end play exceeds the service limit (typically 0.30 mm). Use genuine SANY thrust plates to ensure correct thickness and hardness. After installation, rotate the camshaft by hand to verify free movement without binding.

Symptoms of Worn Camshaft Thrust Plate

A worn or damaged camshaft thrust plate 61000191 can cause several engine problems. Excessive camshaft end play (more than 0.30 mm) can produce a knocking or clicking noise from the front of the engine, especially during acceleration or deceleration. The noise may change with engine speed and load. In severe cases, the camshaft may shift forward enough to cause the timing gears to lose proper meshing, leading to erratic valve timing, loss of power, and potential piston‑to‑valve contact.

If the thrust plate wears unevenly or becomes scored, metal particles may circulate in the engine oil, causing damage to bearings and other components. Low oil pressure warning or filter contamination may result. During engine disassembly, inspect the thrust plate face for grooves, scoring, or discoloration. Measure the plate thickness with a micrometer – if worn below the service limit, replace it.

Always replace the thrust plate when rebuilding the cylinder head or camshaft assembly. Use genuine SANY plates to ensure correct hardness and thickness. If replacing due to wear, also inspect the camshaft journal for scoring and replace the camshaft if damaged.

Quality Assurance & Full Traceability

Every camshaft thrust plate 61000191 is manufactured in an IATF 16949 certified facility under SANY’s rigorous quality management system. The production process includes raw material spectrographic analysis, stamping or machining, heat treatment, and final grinding. 100% inspection includes flatness check with a precision straightedge, thickness measurement with a micrometer, hardness testing, and visual inspection for cracks or surface defects.

A sample from each batch is sectioned for metallographic examination to verify microstructure and case depth. A batch code is stamped on the plate or packaging, providing full traceability to the material lot, heat treat parameters, and final inspection records.

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

Field Performance of Genuine SANY Camshaft Thrust Plate

Field data from SANY dump trucks and excavators operating in Australian iron ore mines and South African quarries shows that genuine 61000191 camshaft thrust plates maintain their flatness and thickness for the full engine service interval, typically exceeding 20,000 operating hours. Aftermarket thrust plates often fail prematurely due to inadequate hardness, poor flatness, or incorrect thickness, leading to excessive camshaft end play, valve train noise, and timing issues within 8,000‑10,000 hours.

The superior durability of the genuine SANY thrust plate comes from the premium alloy steel, the precise heat treatment that provides a hard, wear‑resistant surface, and the precision grinding that ensures perfect flatness and parallelism. Fleet owners report that standardizing on genuine SANY thrust plates eliminates camshaft end play problems and reduces valve train noise.

To maximize service life, always measure camshaft end play during each major overhaul. If end play exceeds the service limit, replace the thrust plate. Use genuine SANY plates to ensure correct thickness and hardness. Following these practices ensures reliable camshaft positioning and long engine life.