The main forms of damage to 0202 connecting rods are fatigue fracture and excessive deformation. Fatigue fractures are typically found in three high-stress areas on the connecting rod. The working conditions of the connecting rod require the connecting rod to have high strength and fatigue resistance; it also requires sufficient rigidity and toughness. In the traditional connecting rod processing process, the materials are generally 45 steel, 40Cr or 40MnB, etc., and the hardness is higher. Therefore, the new connecting rod materials produced by German automobile companies such as C70S6 high carbon microalloy non-quenched steel, SPLITASCO series forged steel, FRACTIM forged steel and S53CV-FS forged steel are used (the above are German din standards). Although alloy steel has high strength, it is sensitive to the concentration of corresponding forces. Therefore, strict requirements are required in terms of connecting rod shape, excessive rounded corners, etc., and attention should also be paid to the surface finish quality to improve fatigue strength. Otherwise, the application of high-strength alloy steel will not achieve the expected results. The 0202 connecting rod is a tool that connects the piston and the crankshaft, transmits the force received by the piston to the crankshaft, and converts the reciprocating motion of the piston into the rotating motion of the crankshaft. The 0202 connecting rod group is composed of connecting rod body, connecting rod cap, connecting rod small head bushing, connecting rod head shaft tile and connecting rod bolt (or screw), etc. 0202 and connecting rod bolts (or screws), etc. The connecting rod group is subject to the gas force from the piston pin and its own swing and the reciprocating inertial force of the piston set. The magnitude and direction of these forces change periodically. Therefore, the connecting rod is subjected to alternating loads such as compression and stretching. The connecting rod must have sufficient fatigue strength and structural rigidity. Insufficient fatigue strength often causes the connecting rod body or connecting rod bolt to break, which in turn causes major accidents of damage to the whole machine. If the rigidity is insufficient, it will cause bending deformation of the rod body and the unrounded deformation of the connecting rod head, leading to partial wear of the piston, cylinder, bearing and crank pin. Company year-round supply: 0202 Komatsu parts, Komatsu excavator parts, Komatsu bulldozer parts, loader parts, Carter accessories, Carter excavator parts, mountain push parts 0202 Komatsu engine parts: engine block, medium cylinder assembly, engine four sets, crankshaft, camshaft, large and small tile, inlet and exhaust valve, overhaul package, cylinder head, turbocharger, water pump, oil pump, generator, starter motor, oil pan , diesel pumps, etc. 0202 Komatsu hydraulic parts: hydraulic pumps and accessories (pump bile, plunger, distribution plate, nine-hole plate, copper ball), rotary motor, slewing reducer, slewing bearing, distribution valve, walking motor, boom/stick/bucket cylinder. 0202 Komatsu chassis parts: chains, track plates, gear rings, support wheels, pallets, guide wheels, tensioning cylinders, buckets, various pin sleeves. 0202 cab accessories: cab shell, interior panel, glass, display, computer board, seat, wiring harness, air conditioning control panel, travel PPC valve, compressor 0202 Komatsu original hydraulic pump, main valve, hydraulic pump solenoid valve, water tank, hydraulic oil radiator, condenser, repair kit, potentiometer, arm, small arm, bucket (earthwork, rock), tool frame, chiqiu rack, connecting rod, pin shaft, bushing