Rexroth CD250 Series Heavy-Duty Hydraulic Cylinder CD250 A C 80/45/200 A C CD250 A E 100/56/300 A C CD250 A E 160/100/500 A C CD250 A C 200/125/800 A C CD250 B D 320/220/1000 A C
Rexroth CD250 Series Heavy-Duty Hydraulic Cylinder
Rexroth CD250 (also referenced as CD/CG250) is a heavy-duty, single-rod, double-acting differential hydraulic cylinder designed for extreme industrial loads and harsh operating environments. It is a classic mill-type cylinder series originally introduced under Mannesmann Rexroth technology, conforming to German steel mill standards and ISO 3320.
Example Models:
- CD250 A C 80/45/200 A C
- CD250 A E 100/56/300 A C
- CD250 A E 160/100/500 A C
- CD250 A C 200/125/800 A C
- CD250 B D 320/220/1000 A C
A: Depends on the style of tie-rod. We would like to cast and forge once the quantity above 100 pcs.
A: Well, it depends on the quantity and style of hydrualic cylinders, at least 60 days if we make casting and forging, at least 35 days by maching.
A: Sure, we are the manufacutuer and trading of hydraulic cylinder.
A: Double-Acting-have a port at each end, supplied with hydraulic fluid for both the retraction and extension. Single-Acting-hydraulic fluid enters through
a port at one end of the cylinder, which extends the rod by means of area difference. An external force or gravity returns the piston rod.
A: Sure. Show us the drawing, we will quote for you soonest.
A: Yes, we make and supply a wide rang of hydrualic cylinders as a proffetional manufacture, there are only some kinds of them show on the website. Freely contact us to get more information.
- Design Type: Single rod, double-acting, differential mill-type cylinder
- Nominal Pressure: 250 bar (25 MPa)
- Static Test Pressure: 375 bar (37.5 MPa) (1.5 × nominal pressure)
- Piston Diameter (Bore): 40, 50, 63, 80, 90, 100, 110, 125, 140, 160, 180, 200, 220, 320 mm (14 standard sizes)
- Piston Rod Diameter: 20, 28, 35, 45, 56, 70, 80, 90, 100, 110, 125, 140, 160, 220 mm
- Max. Stroke: Up to 10,000 mm (10 meters)
- Standards: German steel mill standards, ISO 3320
- Working Medium: Mineral oil, water-glycol, phosphate ester (fire-resistant fluids)
- Temperature Range: -30 °C to +100 °C
- Max. Operating Speed: 0.5 m/s (up to 1.5 m/s with special seals)
- Cylinder Construction:
- Type A: Threaded/flange connection between head and barrel
- Type B: Welded base, threaded head connection
- Design Features:
- Differential circuit integrated for faster return strokes
- End-position cushioning (standard adjustable throttle type)
- Safety bleed valve at both ends for easy air purging
- Extreme Heavy-Duty Durability: Built for continuous operation in steel mills, forging, and heavy machinery with high shock loads.
- Modular Seal Systems:
- Type A (V-Pack): Multi-lip V-ring seals for high-pressure, high-speed conditions.
- Type T (Slide Ring): Low-friction wear rings for precise, low-speed motion.
- Hard Chrome-Plated Rods: High-strength, corrosion-resistant piston rods with superior wear protection.
- Flexible Mounting Styles:
- Front flange (MF3)
- Center trunnion (MT4)
- Rear clevis (MP5)
- Rear flange (MF4)
- High Customization: Available as double-rod (equal-speed) versions for specific applications.
- Service-Friendly: Easy access to seal kits and robust, bolted construction for minimal downtime.
