Recommendations and specifications
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Recommendations and Specifications for hydraulic equipment and facilities


Recommendations & Specifications




 Specifications In accordance with VDI 3267 to 3284
 Terms and   
In accordance with DIN ISO 1219
 Units SI-units as per ISO 1000
 without tolerances
DIN 7168-m
 Connection thread Whitworth®British standard pipe thread, type X as DIN 3852, data sheet 2, (for cylindrical screwed plugs).
 Fittings As per DIN 2353, screwed plugs type B as per DIN 3852,
sealing by knife edge or elastic-sealing. Do not use additional sealing materials
(e.g. Teflon ribbon) or tapered connection thread (e.g. NPT-thread).
 Recommended   oils Oil temperature °C
10 - 40
15 - 50
20 - 60
Designation as per DIN 51524
HLP 22
HLP 32
HLP 46
 Sealing material - NBR (Acrylnitril-Butadien-Caoutchouc, e.g. Perbunan®),
- FKM (Fluorine-Caoutchouc, e.g. VITON®),
- PTFE (alone or with additional materials), PU, special materials in accordance with function requirements
 Clamping Elements 
 Mounting position Any, if not otherwise stated
 Operating   pressure see product-specific data sheet
 Ambient   temperature -10 °C up to +60 °C
 Piston transverse   forces max. 5% of the nominal piston force
 Admissible piston   stroke speed max. 0,25 m/s (attention to product-specific data sheet indications)
 Operating method - single-acting, without or with spring reset of the piston (Reset times cannot be defined)
- double-acting
 Temperature   influence All media expand differently when temperatures rise. The hydraulic oil also tries to expand. Similarly a fall in temperature leads to a decrease in pressure. Generally one can assume that change of 1°C alters the pres-sure by approx. 10 bar. For that reason fixtures that are uncoupled from the power unit should be equipped with a pressure accumulator in order to reduce the influence of temperature.
 Lifetime In the case of single-acting cylinders with spring reset, it is essential to prevent the ingress of fluids and dirt particles into the spring chamber


Always comply with the applicable accident prevention regulations. In particular avoid risks of trapping or squashing fingers etc. During strokes of the cylinder (DIN 31001, section 1).
 & Maintenance
Take care to ensure scrupulous cleanliness when assembling hydraulic components.
Use only clean, specified pressure medium.
Bleed the hydraulic system before putting into operation.
Adhere to the manufacturer’s instructions and maintenance intervals.
 Rotary Couplings 
 Installation  conditions Rotary couplings may be fixed (screwed) only on one side. The opposite side may be secured against twisting. It is to be avoided that no bending moment is effected on the standing or rotating element. Only the firmly bolted side may be piped. The other side should be supplied with pressurized oil via flexible hoses only.
 Operating   pressure,
 Ambient   temperature,
 Max. rotary speed
For these data refer to the relevant data sheet and/or the respective built-in drawing.
Take care to ensure scrupulous cleanliness when assembling hydraulic components.
Use only clean, specified pressure mediums.
Bleed the hydraulic system before putting into operation.
Rotary couplings are not subject to regular maintenance intervals.








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Founded 1998, HYDROKOMP designs, manufactures and distributes hydraulic components, coupling systems and clamping technology for mechanical engineering, fixture construction, tooling and many other branches of industry also for different operating conditions.

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HYDROKOMP is the right supplier for companies of mechanical engineering fixture construction, tooling and many other branches of industry worldwide. Constructive ideas and customer-specific designs are our particular strengths.

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Our qualified employees and our modern CNC machinery ensure high flexibility product variety and quality. HYDROKOMP products are designed for long-lasting application in rough industrial daily routine. Our customers can surely trust that the process will flow smoothly.

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