Product Overview:

Name: 4140 Hydraulic Cylinder Barrel

This product is widely used to manufacturer hydraulic cylinders or repair cylinders, as the hydraulic cylinder barrel is usually made of seamless cold drawn steel tubes with inner diameter honing, so it is also well known as honed tubing.

Place of Origin: Wuxi, China

Brand: SKYLINE

Certificate: ISO9001:2015

As a professional hydraulic cylinder barrel manufacturer and supplier, Skyline has been supplying and exporting hydraulic cylinder barrel for more than 20 years.

Product Details:

Material: SAE4140/AISI4140/42CRMO

Delivery Condition: BK, BK+S, GBK, NBK

ID Size : 20mm – 610mm

Length: max 16m

Type: Seamless, Hot Rolled, Cold Rolled, Cold Drawn

Straightness: ≤ 0.5/1000

Roughness: 0.2-0.4 u

Tolerance EXT: DIN2391, EN10305, GB/T 1619

Tolerance INT: H7,H8,H9

Protection: Anti-rust oil on inside and outside surface, plastic caps in both ends.

Packing: Bundle with steel strip and PE sheet or wooden case

What is 4140 steel?

Steel 4140 is AISI standard grade, it is a kind of alloy structural steel, equivalent to China standard GB 42CrMo.
SAE 4140 alloy steel has high fatigue strength and low notch sensitivity, high low temperature impact toughness, no obvious temper brittleness, and is mainly used in the quenched and tempered state. It is used to manufacture high-strength parts and parts with large cross-sections and other stress-bearing components under impact load. Such as high strength Hydraulic cylinder rods, penaumatic cylinder rods, the transmission eccentric shaft of the horizontal forging machine, the crankshaft of the forging press, etc.

Besides 4140 honed cylinder barrel tubes, we also produce 4140 chrome bar, this product is the chrome rod for hydraulic cylinders made of steel SAE 4140, which is mostly used to produce hydraulic piston rods.