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Model No.: CDH1 MF3 70/50-2040
Brand: Guoyue
Origin: China
Warranty Period: 1.5 Years
Out-of-warranty Service: Video Technical Support, Online Support
Place Of Origin: China
Service System: Online Support, Video Technical Support
Maximum Stroke: Other
Inner Tube Diameter: Other
Support Customization: Oem, Odm
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Manufactured to ISO 6022 / DIN ISO 3320 dimensional and mounting standards, Bosch Rexroth CDH1 series compatible.
Bore 70 mm × Rod 50 mm × Stroke 2040 mm, double-acting Differential Cylinder, nominal pressure 250 Bar (static proof pressure 375 Bar).
MF3 mounting style — round flange at head end, designed for flange-face mounting; six standard mounting options available across CDH1 series (MF3 / MF4 / MP3 / MP5 / MT4 / MS2).
Piston rod: induction-hardened, chrome-plated 30–50 μm, surface roughness Ra ≤ 0.2 μm, corrosion-resistant to ISO 9227 (NSS ≥ 96 h), surface hardness ≥ 55 HRC.
Long stroke design — 2040 mm stroke length, piston rod buckling verified per Euler buckling calculation at maximum rated pressure 250 Bar; suitable for extended linear motion applications.
Cylinder tube: precision-honed seamless cold-drawn steel, honed to H8 tolerance, internal surface roughness Ra ≤ 0.4 μm.
Seal system: polyurethane/polytetrafluoroethylene (PU/PTFE) step seal + wiper, low friction, extended service life. End position cushioning with throttle valve (standard "E" option), adjustable on both ends.
Threaded piston rod end with locking nut; Rexroth interchangeability — direct drop-in replacement for OEM Rexroth CDH1 MF3 cylinders.
Port size: per ISO 6022 standard flange connection. Bleeding valve fitted (90° offset relative to line connection, clockwise when viewing piston rod).
Operating temperature range: −20 °C to +80 °C (NBR seals), viscosity 2.8–380 mm²/s (ISO VG 32 – 68 mineral oil recommended).
Application: long-stroke press cylinder, injection molding machine clamping/ejection, die-casting machine, material handling lift, extrusion press, and general linear actuation requiring extended stroke.
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