KOENIG EXPANDER® SERIES SK 550

  • Sealing plugs for operating pressures up to 500 bar / 7200 psi
  • Short installation length
  • Liberal manufacturing tolerance 0 / + 0.12mm
  • Extended mandrel for deeper setting

KOENIG EXPANDER® SERIES SK 550

KOENIG EXPANDER® SERIES SK 550 – OVERVIEW

pull style expander seal
Series SK 550 expander plug
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 Numberd1l1d2l2I3 max.I4 max.d3
+ 0.12
0
Packaging UnitWeight in
grams/pcs.
SK 550-0404.04.52.50399.06.54.0100/10001.71
SK 550-0505.05.53.004110.07.55.0100/10002.68
SK 550-0606.06.53.404312.08.06.0100/5003.61
SK 550-0707.07.54.103814.09.07.0100/5004.98
SK 550-0808.08.54.204015.010.58.0100/5006.33
SK 550-0909.09.54.504317.011.09.0100/2508.23
SK 550-10010.010.54.754519.012.510.0100/25010.57
SK 550-12012.012.55.705024.016.5012.050/25016.77

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 – 101600 bar / 23200 psi
   500 bar / 7200 psi
1400 bar / 20300 psi
   450 bar / 6500 psi
Ø 121600 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.
Already a Member, Log In Here
New User Registration
* Please indicate that you agree to the Terms of Service
*Required field

Operation

Technical Information

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.