STANDARD DIMENSIONS

DESCRIPTION

The PHP piston seal is design for double effect cylinder where the pressure and working condition are heavy. It is composed by three element: – Static Part that has energizing function – Central Dynamic part has axial sealing function – Lateral antiextrusion Ring allow a greater radial clearance between piston and bore cylinder. Cylinders used on earth moving machines, lifting machines and presses.

TECHNICAL DATA

Pressure: < 400 [bar] (With TPU material)
Speed: < 0.8 [m/s] (With TPU material)
Temperature: from – 35 °C to +100°C (with peaks till 110°C with TPU material) da -35°C a + 150° (With PTFE material)
Fluids : mineral-based fluid and oil.

MATERIAL

– Static energizing ring in NBR 80 Shore A
– Dynamic seal in TPU 93 Shore A(standard for pressure until 300 [bar])
– Dynamic seal in TPU 98 Shore A (standard for pressure until 400 [bar])
– Dynamic seal in PTFE( for pressure until 600 [bar] e high speed)
– Anti-extrusion Ring in thermoplastic material (POM or PA)

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STANDARD DIMENSIONS

DESCRIPTION

The double effect Piston Seal PSZ is a combination of: a plastic runner with a step cut and a elastomeric ring (NBR) in rectangular section for energizing. The high strength of a plastic material, allow to resist at high pressure and also made radial clearance (Piston / Bore) more elevate respect at the others actually seals. This simplified and facilities the machining of the piston. The use we can find is in the excavators , in the lifts, in the cranes and in the fork lifts.

TECHNICAL DATA

Pressure: < 600 [bar] (with peaks till 1000 [bar])
Speed : < 1 [m/s] Temperature: from -30 °C to +110 °C
Fluids : mineral-based fluid and oil.

MATERIAL

Elastomeric ring in NBR 75 Shore A
Plastic Runner in modify PA66 material

ASSEMBLING

The installation is simplified because the Runner has a cutting step. The assembling in in closed croove after the installation of NBR energizing element. Grease before the piston installation in the cylinder.

The post PISTON SEAL PSZ appeared first on Tesnila in tesnilni sistemi.

STANDARD DIMENSIONS

DESCRIPTION

The function of the wiper PO22 wiper is cleaning the rod while return into position, blocking external impurities. It is made up of an external metal cage core part glued to a PU element. It has widely used on earth moving machinery and agricultural machinery. For the limited size can be used to protect joints, bearings and bushings rolling (pin dust seal). The groove is open and makes easier the design of the seat.

TECHNICAL DATA

Speed: < 0.8 m/s
Temperature: from -35°C to +100°C with peaks till +110°C.
Fluids: hydraulics oils, grease and mineral lubricants.

MATERIAL

The material of the wiper is a polyurethane with a hardness of
93° Shore A and steel core.
Compound reference : CA NORMS DIN 1624

ASSEMBLING

The assembling is done in open groove ( interference ). Remove flashes and cutting edges to allow better installation of the wiper to facilitate and not damage the cage during insertion.

The post WIPER PO22 appeared first on Tesnila in tesnilni sistemi.

STANDARD SEAL DIMENSIONS

DESCRIPTION

For the MA3 rod seal slight changes have been made compared to the traditional rod seals profiles. This has been done in order to obtain the following advantages: better sliding, lower abrasion resistance and better performance also at low pressures. A rounded dynamic lip improve linear movements. Deeper U-profile between the dynamic and the static lip improve flexibility and better perform in case of misalignments of the system.

TEHNICAL DATA

Pressure: < 20 bar
Speed: < 1 m/s
Temperature: from – 30° C up to + 90° C
Fluids: air with or without lubrication, mineral oils or grease

MATERIAL

Standard polyurethane 90 Shore A.
Alternative polyurethane 85 Shore A.

ASSEMBLING

It is important to remove flashes or cutting edges in the housing to avoid damages. The rod doesn’t present flashes and must have a lead-in chamfer.

The post ROD SEAL MA3 appeared first on Tesnila in tesnilni sistemi.

STANDARD SEAL DIMENSIONS

DESCRIPTION

TECHNICAL DATA

MATERIAL

ASSEMBLING

The post ROD SEAL MA6 appeared first on Tesnila in tesnilni sistemi.

STANDARD SEAL DIMENSIONS

DESCRIPTION

The KO15 seal type is similar to the KO10 type, but on the dynamic side, it presents a multifunctional double lip which:
– reduces stick-slip effects thanks because it keeps oil between the secondary lip and the main one;
– stops any external impurities;
– faces the material shrinkage at low temperatures;
– acts as a stabilizer.

TECHNICAL DATA

Pressure: < 400 bar at a temperature of 60° C
Speed: < 0.5 m/s
Temperature: from – 35° C to + 100° C with peaks till 110° C
Fluids: mineral fluids and oils

MATERIAL

The proposed material is polyurethane, with high elasticity modulus, low compression-set and high abrasion resistance. The hardness is 93 Shore A ± 2.

ASSEMBLING

To prevent any damage to the seal, remove any flash and cutting edges in the housing and on the rod. The seal should always be lubricated before assembling in order to have easier insertion of the rod.

The post ROD SEAL KO15 appeared first on Tesnila in tesnilni sistemi.

STANDARD SEAL DIMENSIONS

DESCRIPTION

The special geometry of the wiper PO21-NBR, without hanging, with vulcanized metal core inside, for completely open groove, improve the assembling. The grooved seat circlip holder, avoids the scraper ejection. The replacement is also very simple during maintenance. The special profile combining seal and wiper in a single solution, keeps the cylinder free from outside impurities.

TECHNICAL DATA

Pressure: < 16 [bar] Speed: < 1 [m/s]] Temperature: from – 30°C to +100°C for NBR version from -15°C to +150°C for FKM version
Fluids: lubricated air, grease and mineral oils

MATERIAL

Standard material is NBR 75 Shore A black colour. In alternative FKM 75 Shore A brown colour.

ASSEMBLING

We suggest assemblinh as follows:
1) Insert scraper
2) Place circlip in the niche
Is recommended to lubricate the seat and remove the sharp edges originated by the machining.

The post WIPER PO21-NBR appeared first on Tesnila in tesnilni sistemi.

STANDARD SEAL DIMENSIONS

DESCRIPTION

The main characteristic of the hooked profile of the PO21 wiper is to enable easy and fast installation into a complete open housing, both automatically and manually. The groove is completely open with a lateral milling, which allows the wiper to be replaced easily. The special profile combining seal and wiper is very strong and allows important rod misalignments without any danger of ejection from the seat. Moreover, the static lips profile keeps the cylinder free from outside impurities.

TECHNICAL DATA

Pressure: < 20 bar
Speed: < 1 m/s
Temperature: from – 30° C up to + 90° C
Fluids: air with or without lubrication, mineral oils or grease

MATERIAL

Standard polyurethane 90 Shore A.
Alternative polyurethane 93 Shore A.

ASSEMBLING

The wiper should be lubricated internally during installation. The external lubrication of the wiper and housing is not recommended due to the extrusion risk of the wiper. It is important to remove cutting edges and flashes in the housing to prevent damages of seal during assembling.

The post WIPER PO21 appeared first on Tesnila in tesnilni sistemi.

STANDARD SEAL DIMENSIONS

DESCRIPTION

TECHNICAL DATA

MATERIAL

ASSEMBLING

The post WIPER PO5 appeared first on Tesnila in tesnilni sistemi.

STANDARD SEAL DIMENSIONS

DESCRIPTION

TECHNICAL DATA

MATERIAL

ASSEMBLING

The post WIPER PO20-NBR appeared first on Tesnila in tesnilni sistemi.