Hydraulic cylinders
High-pressure hydraulic cylinders – general information
Single-acting hydraulic cylinders (piston or plunger) and double-acting hydraulic cylinders (piston) are used in the hydraulic systems of cranes, hoists, construction machinery, farm machinery, etc. The single-acting cylinders come with an air vent (piston cylinders) or without an air vent (plunger cylinders). The complete cylinder includes mounting elements. The most common mounting element is an eye fitted with a grease nipple:
- eye with spherical plain bearing (standard)
- eye with bushing (option).
- Eyes are welded directly to the cylinder and to the piston rod.
A threaded eye can be screwed on a threaded piston rod as well.
1. eyes (carbon steel) | a) piston seals (NBR + TPE + POM) |
2. ports (carbon steel) | b) o-ring NBR (static seal) |
3. end cap (carbon steel) | c) wiper seal PU |
4. body (carbon steel) | d) gland seal (NBR + fabric) |
5. piston (carbon steel) | e) seal PU (static seal) |
6. piston rod (NiCr coated alloy steel) | |
7. gland (cast iron) | |
8. spherical plain bearings (bearing steel) |
Type | Operation | Construction | Mounting 1 (cylinder side) | Mounting 2 (piston rod/plunger side) |
HPA1 | double-acting | piston | eye with spherical bearing* | eye with spherical bearing* |
HPE1 | single-acting | piston | eye with spherical bearing* | eye with spherical bearing* |
HPA2 | double-acting | piston | eye with spherical bearing* | metric male thread** |
HPE2 | single-acting | piston | eye with spherical bearing* | metric male thread** |
SE | single-acting | plunger | mounting hole | mounting hole |
DE | double-acting | piston | mounting hole | mounting hole |
* – eye fitted with a grease nipple (requiring lubrication)
** – a threaded eye (Tubes code: HS-HP-KT…) can be screwed on this rod
Cylinder selection
During selection consider the following criteria:
- cylinder type (single-acting or double-acting)
- maximum working pressure
- cylinder size (piston/piston rod)
- cylinder stroke
- cylinder mounting options (e.g. eyes with spherical bearings)
Piston cylinders are smaller than plunger cylinders. They are additionally equipped with an air vent to allow the piston/piston rod to move during cylinder operation.
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Contact
- Production of industrial hose assemblies
- Production of high and ultra-high pressure hydraulic hose assemblies
- Production of steel hose assemblies
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- Assembly and packaging of hoses in Cleanroom
- Comprehensive loading/unloading solutions
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- Professional pipe bending
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- Service of machines and equipment for industrial hose assembly production
- Service of machines and equipment – high pressure hydraulics
- 24h service in selected branches
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- Logistics services for the Customers of Tubes International
- Customer training
Tubes International Sp. z o.o.
ul.Bystra 15A
61-366 Poznań
NIP: 7810046084
Phone: +48 61 653 02 22
Fax: + 48 61 653 02 20
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