KOENIG EXPANDER® SERIES SK 550 – OVERVIEW
Pull-style expander seals use an integrated mandrel to insert the expander plug into a drilled hole. The KOENIG EXPANDER® Series SK 550 plug does not require the hole to be counter-bored, and is often used for angled channels or installations with difficult orientations. They are ideal for installations with space or weight constraints.
Material:
Sleeve: Case Hardening Steel, Gun Metal-Finish Mandrel: Heat Treatable Steel, Special Oil Film Lubrication
Product SpecificationsPressure Performance3D CADTechnical DownloadsVideo
| Part Number | d1 | l1 | d2 | l2 | I3 max. | I4 max. | d3 + 0.12 0 | Packaging Unit | Weight in grams/pcs. |
|---|---|---|---|---|---|---|---|---|---|
| SK 550-040 | 4.0 | 4.5 | 2.50 | 39 | 9.0 | 6.5 | 4.0 | 100/1000 | 1.71 |
| SK 550-050 | 5.0 | 5.5 | 3.00 | 41 | 10.0 | 7.5 | 5.0 | 100/1000 | 2.68 |
| SK 550-060 | 6.0 | 6.5 | 3.40 | 43 | 12.0 | 8.0 | 6.0 | 100/500 | 3.61 |
| SK 550-070 | 7.0 | 7.5 | 4.10 | 38 | 14.0 | 9.0 | 7.0 | 100/500 | 4.98 |
| SK 550-080 | 8.0 | 8.5 | 4.20 | 40 | 15.0 | 10.5 | 8.0 | 100/500 | 6.33 |
| SK 550-090 | 9.0 | 9.5 | 4.50 | 43 | 17.0 | 11.0 | 9.0 | 100/250 | 8.23 |
| SK 550-100 | 10.0 | 10.5 | 4.75 | 45 | 19.0 | 12.5 | 10.0 | 100/250 | 10.57 |
| SK 550-120 | 12.0 | 12.5 | 5.70 | 50 | 24.0 | 16.50 | 12.0 | 50/250 | 16.77 |
Dimensions in millimeters
| Series SK 550 mm | Base Material of the Installation | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| High Strength Steel ETG-100 / 44SMn28 AISI 11441 | Case Hardened Steel C15Pb / 1.0403 AISI 10L15 | Ductile Cast Iron EN 1563: GJS-600-3 ASTM A536: 80-60-03 | Gray Cast Iron EN 1561: GJL-250 ASTM A48: NO.35 | Aluminum-Alloy AICu4Mg1 / EN AW-2024-T3 AA: 2024 T4/T6* | Aluminum-Alloy AIMgSiPb / EN AW-6012-T6 AA: 6012-T6 | Cast Aluminum-Alloy G-AISi7Mg / EN-AC-42100 ASTM/UNS: A356 | |||
| Ø 4 – 10 | 1600 bar / 23200 psi 500 bar / 7200 psi | 1400 bar / 20300 psi 450 bar / 6500 psi | |||||||
| Ø 12 | 1600 bar / 23200 psi 400 bar / 5800 psi | ||||||||
| Proof Pressure Test B Max. allowable Working Pressure = Nominal Pressure *SFC KOENIG’s North American Engineering Department utilizes 2024-T4/T6 as a test base material. | |||||||||
Operation
- Installation Instruction SK PDF
- Setting Tool SK
- KW-008 – Hand Lever Tool with Equipment Ø 4 – 6 mm
- EXTOOL-030 – Hydraulic/Pneumatic Tool
- EXTOOL-040-1 – Hydraulic/Pneumatic Tool
- EXTOOL-040-2 – Hydraulic/Pneumatic Tool
- EXTOOL-050 – Hydraulic/Pneumatic Tool
- EXTOOL-B-010 – Hydraulic/Pneumatic Tool
Technical Information
- Design Guidelines – wall thickness / distance from edge; required installation lengths, roundness tolerance, and conicity of the bore – view page or downloadable PDF
- Anchorage Principle – view page or downloadable PDF
- Galvanic Corrosion – view page or downloadable PDF
- Technical Information – test pressure, base material / installation requirements, pressure performance – view page or downloadable PDF
- Hardness Conversion Table – view page or downloadable PDF
- Quality Certificates
Design Support
Our expertise is at your service. Speak to our engineers for complete design-in support of our sealing and flow control solutions.
Installation Equipment
SFC KOENIG offers a complete line of installation equipment including hydropneumatic systems, handheld tools and setting components.
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