Hollow Piston Rod

Our Hollow Piston Rods are manufactured from high-quality CK45 hot rolled steel and feature a precise outer diameter with a smooth inner bore. These rods reduce overall cylinder weight and material cost, while maintaining excellent mechanical performance. ISO9001:2008 approved for quality assurance.

Technical Specifications

Material: CK45 (DIN 1.1191)
Type: Hollow Hydraulic Cylinder Rod
Processing: Hot Rolled
Surface Finish: Chrome plated (optional)
Outer Diameter Range: Customizable upon request
Inner Diameter: According to design
Straightness: ≤0.2mm/m
Tensile Strength: ≥610 MPa
Yield Strength: ≥355 MPa
Surface Roughness: Ra ≤ 0.2μm (after machining)
Standard Compliance: ISO9001:2008

Applications

Customization Options

Diameter and length per drawing
Machined ends (threaded, slotted, etc.)
Chrome plating or induction hardening available
Quantity flexible for small or bulk orders
Size range (OD, ID, Length): Customized. Example: OD: 30-100 mm | Length: up to 6 meters
Finish details: Available with 20-30 μm thickness hard chrome plating Tempered (hardened and tempered) on request
Hardness range (if heat-treated or surface-treated): HRC 58-63 (after induction treatment): HRC 58-63 (after induction hardening)
Tolerance classes (OD/ID): OD tolerance: ISO f7 | ID tolerance: H8-H9
Delivery time and packaging information: Standard delivery time is 15-20 working days. Packed in rust-proof oil + plastic cover + wooden box.

Detailed Description

1.CHEMICAL COMPOSITION

Material	C%	Mn%	Si%	S%	P%	V%	Cr%
Ck45	0.42-0.50	0.50-0.80	0.04	0.035	0.035
ST52	0.22	1.6	0.55	0.035	0.04
20MnV6	0.16-0.22	1.30-1.70	0.10-0.50	0.035	0.035	0.10-0.20
42CrMo4	0.38-0.45	0.60-0.90	0.15-0.40	0.03	0.03		0.90-1.20
40Cr	0.37-0.45	0.50-0.80	0.17-0.37				0.80-1.10

2.MECHANCIAL PROPERTIES

Material	T.S N/MM2	Y.S N/MM2	E%(MIN)	CHARPY	CONDITION
CK45	610	355	15	>41J	NORMALIZE
CK45	800	630	20	>41J	Q + T
ST52	500	355	22		NORMALIZE
20MnV6	750	590	12	>40J	NORMALIZE
42CrMo4	980	850	14	>47J	Q + T
40Cr	1000	800	10		Q + T

Enhance Performance with Precision Hollow Piston Rods

Discover our high-strength, chrome-plated hollow piston rods—engineered for reduced weight, superior durability, and optimal hydraulic efficiency. Contact us now for custom sizes and fast delivery.

Customize your precision tubing