KOENIG EXPANDER® SERIES MB 850

  • Sealing plugs for operating pressures up to 450 bar / 6500 psi
  • Wide range of sizes from . 3 – 22mm
  • Corrosion-resistant versions available
  • Fast, easy installation

KOENIG EXPANDER® SERIES MB 850

KOENIG EXPANDER® SERIES MB 850 – OVERVIEW

Push type expander seals
Series MB 850 Expander plug

The KOENIG EXPANDER® Series MB 850 plugs effectively seal drilled holes. These parts feature a serrated sleeve which expands as the ball is inserted, enlarging the part to the needed size and sealing the hole. For installation, push-style expanders require a hole drilled with a counter bore. If you are unsure if the MB 850 expander sealing plug series is the right component for your application, use our Product Selector to identify the best KOENIG EXPANDER part for your specifications.

Material:

Sleeve: Case Hardening Steel Zinc Plated, Thick Coat Passivated, CR (VI)-Free    Ball: Bearing Steel, Heat Treated

Product SpecificationsPressure PerformanceTechnical DownloadsVideo
Product Numberd1l1(l2) ~ Ref.d2 +0.10 / -0d3 Maxl3 min.x ±0.2Packaging UnitWeight in gram/pcs.3D CAD
MB 850-03033.64.632.23.40.4100 / 10000.17
MB 850-040445.243.33.80.2100 / 20000.34
MB 850-05055.57.154.35.30.4100 / 20000.68
MB 850-06066.58.665.36.30.4100 / 20001.17
MB 850-07077.510.176.47.30.4100 / 10001.91
MB 850-08088.511.687.48.30.350 / 10002.84
MB 850-09091013.698.49.80.450 / 5004
MB 850-100101115.1109.410.80.450 / 5005.47
MB 850-120121317.91210.612.80.450 / 2509.31
MB 850-140141520.61412.714.50.450 / 25014.72
MB 850-160161723.41614.716.50.625 / 10022
MB 850-180181926.41816.718.50.625 / 10031.34
MB 850-200202230.12018.721.50.825 / 10044.24
MB 850-2202225342220.724.50.825 / 5058.61

Dimension in millimeters

Series
MB 850
mm
Base Material of the Installation
High Strength Steel
ETG-100 / 44SMn28
AISI 1144
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 3 – 101100 bar / 16000 psi
   350 bar / 5100 psi
1000 bar / 14500 psi
   320 bar / 4600 psi
Ø 12 – 22900 bar / 13000 psi
   280 bar / 4100 psi
800 bar / 11600 psi
250 bar / 3600 psi
Proof Pressure Test – Ⓑ
Max. allowable Working Pressure = Nominal Pressure
*SFC KOENIG’s North American Engineering Department utilizes 2024-T4/T6 as a test base material.

Operation

Technical Information

Design Support

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Installation Equipment

SFC KOENIG offers a complete line of installation equipment including hydropneumatic systems, handheld tools and setting components.