Hyundai R305-7 Boom Hydraulic Cylinder

JDparts professional Hyundai R305-7 Excavator bucket Arm boom hydraulic cylinder

Hydraulic cylinders that are used on construction equipment must be rugged and reliable. They will experience a lifetime exposed to heavy use in a harsh environment. Failure in service will result in costly downtime, project delays and maintenance headaches.

		Our company's products	Other products on the market
cylinder assembly	piston rod	The piston rod material is made of 40CrMo steel that has undergone high-frequency quenching and tempering treatment, and the product surface has undergone high-precision mirror polishing treatment; The piston rod lifting ear is made of 45 # steel forging material.	The piston rod material has no heat treatment, no mirror polishing, and the piston rod lifting ear is made of ordinary steel, which is easy to break and not durable.
	Cylinder barrel	The material is 45 # steel cold drawn, precision seamless tube, and is formed by one-time rolling and polishing treatment with imported equipment;	Ordinary material, rough inner wall, poor smoothness
	Cylinder head	45 # steel forging, quenching and tempering, high-frequency quenching	Ordinary material, no quenching and tempering, no high-frequency quenching
	Cylinder tail	45 # High precision cast steel, quenching and tempering, high-frequency quenching	Ordinary material, no quenching and tempering, no high-frequency quenching
	Bushing	Made of branded steel, sintered with graphite and MOIS composite solid lubricant	Ordinary material
	axle sleeve	Processed by JIS-SUF2 program for high carbon road bearing steel	No surface treatment has been applied
	oil seal	Imported NOK oil seal	Domestic oil seal
	Guiding sleeve	40Cr medium carbon alloy steel	Ordinary material
Tensioning device assembly	Nut+screw	45 # steel undergoes quenching and tempering treatment, with dimensions and appearance identical to those of the original factory	Made of ordinary round steel
	Spring	60Si2MnA high-strength spring steel, with sufficient turns and the same material thickness as the original, made according to export standards	Ordinary material, few turns, insufficient material thickness, cutting corners
	Cylinder body	Precision casting, internally processed by rolling and polishing, with strong glossiness	Made from rough processing of old waste materials
	Piston rod/shaft	40CrMo, using high-precision mirror polishing	Ordinary round steel, not chrome plated
	U-frame	Precision casting, high-strength and wear-resistant	Ordinary materials or ordinary sand casting, with a reduced appearance and cutting corners
	oil seal	Imported NOK oil seal	Domestic oil seal