CD Series Mill Type Cylinders

Heavy-Duty Differential Solutions | ISO 6022 & DIN 24333 Standard

CD Series Technical Specifications

Category	Mill Type Differential Cylinder
Standard	ISO 6022 / DIN 24333
Nominal Pressure	250 Bar (25 MPa)
Bore Diameter	40mm to 320mm
Piston Rod Dia.	25mm to 220mm

Mounting Type	Flanges, Trunnions, Clevis
Cushioning	Adjustable End-Position Cushion
Fluid Media	Mineral Oil / Water Glycol
Temp Range	-20°C to +80°C (Standard)
Testing Status	100% Final Pressure & Stroke Test

Standardized Manufacturing & QC Workflow Mill Type QC Workflow

Proven Industrial Applications

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About Guoyue Hydraulic

Guoyue Hydraulic is a technology leader integrating design and manufacturing. With a 50 million yuan registered capital, we serve 30+ global enterprises with German-inspired precision and 100% QC commitment.

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Frequently Asked Questions

What is the difference between CD and CG Mill Type cylinders?

CD is a differential cylinder (single piston rod), while CG is a double-acting cylinder (double piston rod). CD is common for general heavy-duty pressing and lifting.

Does your CD series comply with Rexroth standards?

Yes. Our CD series is designed following ISO 6022 and DIN 24333, making it dimensionally interchangeable with standard series from Rexroth, Hydropneu, and other major brands.

What kind of cushioning is available for heavy-duty mill applications?

We provide high-performance adjustable end-position cushioning. This ensures smooth deceleration of heavy loads, preventing mechanical impact and extending the service life of the machinery.

Can the CD cylinder work with high-temperature fluids in steel mills?

Yes. While standard seals handle up to 80°C, we offer specialized seal groups for water-glycol or phosphate ester fluids that can withstand continuous operation up to 150°C.

How do you protect the piston rod from harsh metallurgical environments?

Standard rods are induction hardened and chrome plated. For extreme corrosion, we offer double-chrome plating or ceramic coating (HVOF) to ensure maximum durability.

What is your testing protocol for these heavy-duty cylinders?

Every CD cylinder is subjected to a final inspection involving static pressure tests (1.5x PN) and full stroke functional tests to guarantee zero external and internal leakage.

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