CG – double-acting cylinder

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CGH1 – Double-Acting Cylinder I Mill Type

CGH1 – Double-Acting Cylinder I Mill Type

Product Parameters

Models Shown: 3 models (80–250 mm bore)

Pressure Class: 250–350 Bar

Core Value Proposition: Balanced force for caster withdrawal & strip mill coilers

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  • CGH1 – Double-Acting Cylinder I Mill Type
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Typical Model CG 80/45-300 CG 160/90-1200 CG 250/160-2000
Standard ISO 6022 ISO 6022 ISO 6022
Bore Dia.(mm) 80 160 250
Rod Dia.(mm) 45 90 160
Stroke Range(mm) 100 – 800 200 – 2500 300 – 4000
Mounting Style Flange / Trunnion / Clevis Flange / Trunnion Flange / Trunnion (Heavy-duty)
Protection Protective Bellows Full Bellows Protection Full Protective Sleeve + Wiper
Nominal Pressure(Bar / MPa) 250 Bar / 25 MPa 250 Bar / 25 MPa 350 Bar / 35 MPa
Static Test Pressure(Bar) 375 Bar 375 Bar 525 Bar
Cylinder Body Material 27SiMn / 42CrMo Forged Cylinder Body 42CrMo Forged & Honed Cylinder Body 42CrMo Forged & Honed Cylinder Body
Piston Rod Material 42CrMo Alloy Steel 42CrMo Alloy Steel (Nitrided) 42CrMo Alloy Steel (Deep Nitrided)
Rod Surface Treatment Hard Chrome Plated (30–50 µm) Hard Chrome Plated (40–60 µm) Hard Chrome Plated (50–70 µm) + Super-finish
Rod Surface Finish (Ra) Ra ≤ 0.2 µm Ra ≤ 0.15 µm Ra ≤ 0.10 µm
Sealing System Parker Double-Acting High-pressure Seals Parker / Rexroth-Compatible Sealing System Parker / Rexroth-Compatible Sealing System
Operating Temp.(°C) -20 ~ +100 -30 ~ +120 -30 ~ +120
Fluid Compatibility Mineral Oil / Water Glycol / Phosphate Ester Mineral Oil / Water Glycol / Phosphate Ester Mineral Oil / Water Glycol / Phosphate Ester
Application Scenarios Continuous Casting Withdrawal & Straightening Hot Strip Mill Coiler, Downcoiler Mandrel Plate Mill Side Guides, Heavy Coiler Mandrels
Key Features Balanced force in both directions, servo capable High cycle rate, consistent force profile Highest CG capacity, symmetrical high-force output
Who is NOKHYDRAULIC?
NOK Hydraulic Co., Limited, as a technology-driven enterprise we focus on the research, design, and production of hydraulic components. We specialize in hydraulic systems, cylinders, and customized non-standard parts, while continuously improving our technical expertise in hydraulic cylinders by adopting advanced European and American technologies.
  • 01
    R&D Customization
    Over 10 years of experience with EU & US technology. One-piece MOQ, customized OEM & ODM hydraulic solutions with cushioning.
  • 02
    Quality & Capacity
    High-grade materials with Japan NOKHYDRAULIC seals. Strict QC, advanced equipment for mass & small-batch production with on-time delivery.
  • 03
    Global Service
    Our products are exported to more than 20 countries and widely applied in construction, mining, energy, chemical, and port industries.
Company Moments
Beyond manufacturing, NOKHYDRAULIC values its people and culture. Here are some moments that reflect our teamwork, dedication, and commitment to excellence.
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  • 2025-11-14
    Why choose us
    OEM & ODM Solutions  With strong R&D capability and MOQ from 1 piece, we design and manufacture customised hydraulic cylinders and systems with NOKHYDRAULIC seals and cushioning. Quality Assurance From raw materials to final testing, every step follows strict standards. Japan NOKHYDRAULIC seals and cushioning ensure stable performance and long service life. Extensive Experience With more than 10 years of expertise in hydraulic cylinder manufacturing, NOKHYDRAULIC has built a solid reputation for reliability and professionalism in the global market. Compliance & Standards NOKHYDRAULIC products comply with international standards and have obtained ISO and CE certifications, ensuring global recognition of our quality and reliability.
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  • 2025-11-14
    OEM/ODM
    Manufacturing NOKHYDRAULIC has strong R&D and design capabilities, integrating proprietary buffer innovations with precision manufacturing to deliver reliable and durable hydraulic cylinder solutions.  Quality From raw materials to finished products, NOKHYDRAULIC applies strict inspections and standardized procedures, combined with advanced testing methods, to ensure stability and safety under all conditions.  After-Sales NOKHYDRAULIC offers comprehensive after-sales support, including technical guidance, genuine spare parts, and maintenance training, ensuring long-term stable performance of client equipment. 
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  • 2025-11-14
    Our website is online
    NOK Hydraulic Co., Limited is a technology-oriented enterprise specializing in the design, development, and manufacturing of hydraulic cylinders, hydraulic systems, and non-standard components. With more than 10 years of industry experience, NOKHYDRAULIC integrates advanced European and American hydraulic technologies with independent innovation to provide comprehensive OEM & ODM services. Our production base spans over 30,000㎡ with more than 6 modern production lines, equipped with CNC machining, honing, and electroplating facilities, ensuring both precision and large-scale capacity. By adopting high-standard raw materials, combined with heat treatment, precision machining, and advanced buffer structures, our cylinders achieve durability, reliability, and long service life. Strict quality control is implemented throughout the entire process, and products are designed in accordance with German first-line brand standards, meeting international certifications and performance requirements. Today, NOKHYDRAULIC exports to more than 20 countries and regions, covering industries such as construction machinery, mining and metallurgy, petroleum and energy, marine and port, chemical processing, and tunneling projects. Looking ahead, NOKHYDRAULIC will continue to expand capacity, strengthen innovation, and establish itself as a trusted global partner for hydraulic solutions.
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