Single-Actions Hydraulic Cylinders for
Scissor Lift Tables up to 200 bar // HZE4
General Information
The HZE4 series was specially developed for installation in lifting tables up to 200 bar. It is characterized by a robust design with minimal installation dimensions. The cylinders are designed in accordance with EN1570 (lifting platforms) up to an operating pressure of 200 bar and the cylinder bearings can be either maintenance-free or regreasable spherical plain bearings. The connection bore is designed for a pipe rupture safety device or for a lowering brake valve. Depending on the installation position, the cylinder can be vented via the vent screw on the base or rod side. Depending on the application, the cylinders are supplied with different seal sets. Different piston rod materials are also available.
Technical Information | |
|---|---|
| Maximal operating pressure | = 200 bar |
| Testing pressure | = 250 bar |
| Rod Ø | = 40 – 100 mm |
| Accepted temperature range of the hydraulic fluid | = -20°C up to +80°C |
| Hydraulic fluid | = mineral oil (HL, HLP) according to DIN 51524 & DIN 51525 (standard) |
| Stroke speed | = ≤ 0,5 m/s |
Length and stroke tolerances according to DIN7168g (see >>Technical Information)
Mounting Types | Data Sheet | |
|---|---|---|
| Ball-and-socket joint on both sides | (DO – Standard) | >> HZE4 |
(GE-DO subject to maintenance)
(GE..HO wartungspflichtig)
(GE..UK wartungsfrei)
Additional Information
Order Key
Click >> this linkto download the order key in PDF format.
Connecting Bore
The connection hole is located at the bottom end of the cylinder and is designed for line break valves.
The position on the circumference can be changed (standard P8).
Drawing of the position of the vents P7 and the connection piece P8
For long strokes, the support width of the piston rod in the cylinder tube can be changed in order to reduce the load on the guide system when fully extended. This also depends on the type of installation and the design of the cylinder.
D1 - Groove ring and scraper made of polyurethan (standard) | |
|---|---|
| Temperature range | -30°C to +80°C |
| Hydraulic fluid | Mineral oil |
| Stroke speed | ≤ 0,5 m/s |
| Application | Standard seal set for normal operating conditions, offers very high resistance to wear |
D2 - Axial seal ring set consisting of PTFE STEP SEALS (O-ring seal made of NBR) - double scraper (polyurethane) | |
|---|---|
| Temperature range | -30°C to +100°C |
| Hydraulic fluid | Mineral oil, flame-retardant hydraulic fluids HFA and HFB up to +40°C; HFC up to +60°C |
| Stroke speed | ≤ 1 m/s |
| Application | Seal set for high sliding speeds, no stick-slip effect, higher leakage compared to 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) | |
|---|---|
| Application | Sealing set for high sliding speeds, no stick-slip effect, greater leakage than in the case of D1 and D3, for higher temperatures (+200°C) and fluids on a phosphate ester basis (HFD) |
D3 - Tandem sealing set consisting of groove ring (polyurethane) and PTFE STEP SEAL | |
|---|---|
| Temperature range | -30°C to +80°C |
| Hydraulic 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%)
Rod Ø [mm] | Piston Area [mm²] | Operating Pressure [bar] | |||
|---|---|---|---|---|---|
| 50 | 100 | 150 | 200 | ||
| 40 | 1256,6 | 6,3 | 12,6 | 18,8 | 25,1 |
| 50 | 1963,5 | 9,8 | 19,6 | 29,5 | 39,3 |
| 60 | 2827,4 | 14,1 | 28,3 | 42,4 | 56,5 |
| 70 | 3848,5 | 19,2 | 38,5 | 57,7 | 77,0 |
| 80 | 5026,5 | 25,1 | 50,3 | 75,4 | 100,5 |
| 90 | 6361,7 | 31,8 | 63,6 | 95,4 | 127,2 |
| 100 | 7854,0 | 39,3 | 78,5 | 117,8 | 157,1 |
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