60221659 Brake piston Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

60221659 Brake piston Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

The Sany 60221659 brake piston is a core transmission and sealing component of the braking system in Sany construction machinery. It is specifically designed for brakes and master cylinders. Its core function is to transmit braking pressure and push the friction pads to engage and achieve braking. Together with the cylinder and seals, it forms a sealed braking chamber, undertaking the key roles of transmission, sealing, and pressure bearing. It is compatible with Sany and various mainstream construction machinery and is widely used in excavators, crawler cranes, loaders, and other models. It is suitable for harsh working conditions such as mining and infrastructure construction and is the preferred component for aftermarket maintenance, parts wholesale, and foreign trade export.
This brake piston relies on professional piston manufacturing technology and strict quality control. It is made of high-quality 15CrA alloy structural steel and undergoes precision forging, CNC turning, carburizing and quenching, and nickel-free coating treatment. It has precise dimensions and no burrs, a surface hardness of HRC58-62, and a tensile strength of ≥685MPa. It also has excellent wear resistance, corrosion resistance and sealing performance. It can effectively transmit braking pressure, solve pain points such as piston wear, seal leakage, and jamming, extend the overall service life of the braking system and is suitable for long-term use in harsh working conditions.

Core technical parameters:

– Product Model: 60221659
-Product Name: Brake Piston
– Compatible Brands/Models: Sany, excavators, crawler cranes, loaders, etc. (can accurately match specific models)
– Material: 15CrA high-quality alloy structural steel, with no nickel coating on the surface, corrosion-resistant and aging-resistant.
– Structure type: One-piece structure with sealing groove and guide structure, ensuring sensitive transmission and reliable sealing.
– Surface hardness: HRC58-62, tensile strength: ≥685MPa, resistance to deformation and impact
– Machining process: Precision forging, CNC turning, carburizing and quenching, grinding, nickel-free coating, dimensionally accurate and burr-free.
– Accuracy class: GB/T 10095.1-2008 Class 7
– Core dimensions: Diameter 80mm, Length 65mm, Sealing groove width 5mm, Depth 2mm
– Sealing method: Adapted to a dedicated sealing groove, with a leakage rate ≤0.1ml/min and excellent sealing performance.
– Maximum working pressure: 25MPa, capable of withstanding high-pressure braking conditions.
– Operating temperature: -40℃~200℃, suitable for harsh environments with high and low temperatures.
– Service life: ≥10,000 hours (normal operating conditions), fatigue life ≥800,000 cycles
– Implementation standards: GB/T 3077-2015, ISO international certification, conforming to brake component industry standards.
– Weight: 0.75kg, compact structure, adaptable to equipment installation load.

Sany 60221659 brake pistons, made of high-quality alloy materials, with precision manufacturing and accurate parameters, are suitable for the repair and replacement of braking systems in various engineering machinery, meeting the needs of foreign trade, wholesale, and modification. The products undergo rigorous testing and are free from defects such as air holes, sand holes, and deformation. They are easy to install, wear-resistant, and durable, and are compatible with brake cylinders, friction pads, seals, and other components, enhancing transmission braking and sealing pressure resistance, reducing downtime losses, improving operational continuity, and balancing cost-effectiveness and reliability.

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21 60221640 Pin
22 60221660 O-ring
23 60221647 Valve disc
24 60221643 Cylinder Block
26 60221659 Brake piston
27 60221644 Spring plate
28 60221663 Partition
29 60221645 Pressure Plate
30 60221646 Base Plate
31 60221655 O-ring
32 60221636 Piston
33 60221641 Drive shaft
34 60210759 Motor oil seal
35 60221652 Locking sleeve
36 60221630 Support ring
37 60221642 Pad
38 60221653 Rolling bearing
39 60221648 Protective Plate B
40 B220401000688 Rotary motor delay valve
41 150201010091A002 Sealed Package

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