Rod guide ring, type SF

The type SF rod guide ring ensures precise guidance of moving components, prevents metal-to-metal contact and reliably absorbs transverse forces. Thanks to its robust materials, it delivers optimum performance in demanding hydraulic systems.

Data sheet (PDF)

Logos: certified quality, TÜV SÜD, German Federal Ministry for Economic Affairs and Energy, ESF, EU, European Social Fund.

Cross-section of a white PTFE component with horizontal grooves.

Rod guide ring SF – precise guidance and protection for the highest loads

The type SF rod guide ring reliably prevents contact between sliding metal parts and absorbs the transverse forces that occur. As standard it is made of PTFE + carbon or PTFE + bronze; other materials are possible. Thanks to its high media resistance, the guide ring is suitable for mineral oil-based hydraulic fluids, environmentally friendly hydraulic fluids, water-oil emulsions and fire-resistant media. Rod guide rings are characterised by high temperature and chemical resistance, excellent sliding behaviour, good emergency running properties and high wear resistance. They ensure long-lasting, safe and efficient cylinder movements – even under difficult operating conditions.

Application media

Mineral oil-based hydraulic fluids

Water-oil emulsions

Environmentally friendly hydraulic fluids

Fire-resistant hydraulic fluids

Application range

Compressive strength: max. 15 N/mm² at 25 °C, max. 12 N/mm² at 80 °C, max. 8 N/mm² at 120 °C

Speed: up to 15 m/s

Temperature: -30 °C to +200 °C

Surface finish

Roughness

Running surface

Groove base

Groove flank

Ra

≤ 0,3 µm

≤ 1,6 µm

Rt

≤ 3,0 µm

≤ 16,0 µm

Installation dimensions

Rod ø D	Gap Z	Gap dimension S	Radius R max.
< 40,0	1,0 – 3,0	0,25 – 0,4	0.2 for ø D ≤ 250.0 0.4 for ø D ≤ 250.0
< 80,0	3,0 – 6,0	0,25 – 0,5
< 140,0	5,0 – 10,0	0,3 – 0,6
< 340,0	7,0 – 14,0	0,4 – 0,6

Material PTFE profile ring

You will find further possible materials in our PTFE material overview under Downloads.

Downloads

Material overview for dynamic seals (PDF)Product data sheet rod guide ring, type SF (PDF)

Contact

Let's talk about your requirements

Would you like more information on PTFE semi-finished products, seals or engineered components for your application?

Andreas Madaus

Managing Director

+49 35 22 35 23 0 – 0 info@ptfe-cc.de

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