Quenched & Tempered Piston Rod | Compass Power Tech

Piston Rods

Quenched And Tempered Piston Rod

Medium-load hydraulic and pneumatic systems often need piston rods with stronger core performance than standard carbon steel rods can provide. Quenched and tempered piston rods are usually made from alloy steel such as 42CrMo, offering better hardenability, strength, toughness, and overall mechanical performance.

This piston rod type is suitable for medium-load and medium-speed hydraulic cylinders, pneumatic cylinders, guide posts, presses, injection molding machines, and other equipment that requires stable motion control under higher working stress.

Compass Power Tech can process quenched and tempered piston rods into medium-size hydraulic cylinder rods, pneumatic cylinder rods, guide rods, press rods, and injection molding machine rods. The material and heat treatment combination helps customers achieve better load-bearing capacity, dimensional stability, and service reliability in more demanding operating conditions.

Standard

GB	ASTM	DIN	JIS	EN
45	1045	C45	S45C	C45
50	1055	CF53	S50C	-
42CrMoA	4140	42CrMo4	SCM440	42CrMo4
40Cr	5140	41Cr4	SCr440	41Cr4
34CrNiMoA	4340	34CrNiMo6	SNCM439	34CrNiMo6
60Si2Mn	9260	60Si7	SUP6, SUP7	60Si7
Gr15	52100	100Cr6	SUJ2	100Cr6
20MnV	-	20MnV6	-	20MnV6

Diameter (mm)	Chrome Layer Thickness (mm)	Tolerance	Roundness	Straightness (mm/m)	Standard Length (m)	Surface Roughness (µm)
3–25	Ø ≤ 25mm: Min. 15µm	f7 (or upon request)	≤1/2 of diameter tolerance	≤ 0.2	2, 3	Ra≤0.2
25–40	Ø >25mm: Min. 30µm	f7 (or upon request)	≤1/2 of diameter tolerance	≤ 0.2	3, 6, 7.5	Ra≤0.2
40–80	Ø >25mm: Min. 30µm	f7 (or upon request)	≤1/2 of diameter tolerance	≤ 0.2	3, 6, 7.5	Ra≤0.2
80–150	Ø >25mm: Min. 30µm	f7 (or upon request)	≤1/2 of diameter tolerance	≤ 0.15	3, 6, 7.5	Ra≤0.2
150–200	Ø >25mm: Min. 30µm	f7 (or upon request)	≤1/2 of diameter tolerance	≤ 0.15	3, 6, 7.5	Ra≤0.2
200–300	Ø >25mm: Min. 30µm	f7 (or upon request)	≤1/2 of diameter tolerance	≤ 0.15	3, 6, 7.5	Ra≤0.2
Other Requirement	Chrome Layer Thickness	Heat Treatment ①	Heat Treatment ②	Heat Treatment ③	Delivery Condition	Machining Service
Other Requirement	Chrome layer thickness can be customized according to customer requirements.	Quenched & Tempered (Q+T)	Induction Hardened	Q +T and Induction Hardened	Customized	Customized

Our In-house Manufacturing Capabilities & Equipment: Centerless Grinding Machines, Cylindrical Grinders, Peeling Machines, Roller Burnishing Machines, Continuous Quenching & Tempering Lines, Medium/High-Frequency Induction Hardening Lines, Box Furnaces, Track Tempering Furnaces, Turn-Mill Machining Centers, and more.

Additional Custom Services

Custom length: Piston rod length can be customized according to customer requirements, with a maximum length of 300 cm.
End chamfering: Both ends of the rod can be chamfered to support easier machining and assembly.
Drawing-based machining: Piston rods can be machined according to customer drawings and supplied as ready-to-assemble components, reducing the customer’s downstream processing work.

Packaging and Storage

To protect piston rods during sea freight and storage, Compass Power Tech uses anti-rust paper tube packaging. Before wrapping, anti-rust oil is applied evenly to the rod surface, and anti-rust wax is applied inside the paper tube. This protective process helps reduce corrosion risk during transportation and ensures customers receive high-quality piston rods in stable, ready-to-use condition.

Looking for Custom Metal Components for Your Application?

We manufacture precision ground shafts, stainless steel tubing, piston rods and aluminum alloy cylinder tubes for hydraulic, pneumatic, machinery, energy and transportation applications. Contact us for material selection, specifications and customization support.