Double-Action Hydraulik Cylinders industrial model 250 bar // series: HZD5

General information

Series HZD5 cylinders are double-action cylinders without end position damping, designed for difficult industrial application conditions. During the design of this cylinder, we paid special attention to high functional security and stability, guaranteed through the use of high-quality materials. For seal maintenance cases, the rod-side bearing seat and the piston rod guide are designed to be screwable. The piston rod consists of high-tensile structural steel with an approximately 25µm hard chromium-plated layer. Other materials and coatings are available on request.

Please consult us in case of radial forces and non-vertical installation.

Technical data
Max. operating pressure = 250 bar
Test pressure = 315 bar
Piston ∅ = 100 – 320 mm
Temperature range (of the hydraulic fluid) = -20°C to +80°C
Pressure fluid = Mineral oil (HL, HLP) according to DIN 51524 and DIN 51525 (standard)
Stroke speed = ≤ 0,5 m/s

Length and stroke tolerances according to DIN7168g (see “Technical Information“)

Mounting types
Ball-and-socket joint on both sides (DO – Standard) to HZD5 Piston ≤ 200 mm
Ball-and-socket joint on both sides (DO – Standard) to HZD5 Piston ≥ 220 mm

Order key

Please click here to download the order key .

The pipe thread of the connecting bore is designed according to ISO 228/1. The position along the perimeter can be changed (Standard P7/P8).
Standard P7/P8 ≤ 200mm
DW-250-indus
DW-250-indus-2
Standard P7/P8 ≥ 220mm
According to the stroke length, the supporting width of the piston rod is changed to reduce the load of the guidance system when the rod is completely extended.

D1 – Groove ring and scraper made of polyurethane and a compact seal (NBR) on the piston (standard)
Temperature -30°C to +80°C
Pressure fluid Mineral oil
Stroke speed ≤ 0,5 m/s
Application Standard sealing set for normal operating conditions, very high resistance to wear
D2 – Axial seal ring set consisting of PTFE STEP SEALS (O-ring seal made of NBR), double scraper (polyurethane) and a PTFE Glyd ring (NBR O ring seal) on the piston
Temperature -30°C bis +100°C
Pressure fluid Mineral oil, flame-retardant Pressure fluids HFA and HFB up to +40°C;HFC up to +60°C
Stroke speed ≤ 1 m/s
Application Sealing set for high sliding speeds,no stick-slip effect, greater leakage than in the case of D1 and D3
D2V – Axial seal ring set consisting of PTFE STEP SEALS (O-ring seal made of Viton)
Double scraper (Viton O-ring seals) and a PTFE Glyd ring (Viton O ring seal) on the piston
Application Double scraper (Viton O-ring seals) and a PTFE Glyd ring (Viton O ring seal) on the piston Sealing set for high sliding speeds, no stick-slip effect, higher leakages than in the case of D1 and D3, on a phosphate ester (HFD) basis for higher temperatures (+200°C) and fluids
D3 – Tandem sealing set consisting of groove ring (polyurethane) and PTFE STEP SEAL and a compact seal (NBR-PTFE) on the piston
Temperature -30°C to +80°C
Pressure fluid Mineral oil
Stroke speed ≤0,8 m/s
Application Sealing set for high loads at minimum leakage,smooth-running stroke movements
Theoretical cylinder force in [kN] (efficiency = 100%)

Zylinderkraefte-DW-250-indus