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8977 Series

8977 Series

8977 Series

Product catalog summary
Overview: SOURIAU has developed a series of high-reliability Quick Disconnect circular connectors for robotic operations as part of the Space Station Alpha program. These connectors are used on the Japanese Experiment Module (JEM) Exposed Facility and the European Robotic Arm (ERA) interface with Orbital Replacement Units (ORU) and Russian Modules.
Key Features:
  • Low Insertion Force contacts
  • Thermal gradient compatibility
  • Integrated misalignment catching system
  • High durability (6,000 operations for JEM, 20,000 for ERA)
  • High EMI shielding efficiency
  • Deep space environment (ATOX) compatibility
  • Arrangements from MIL-DTL-38999
Mechanical and Electrical Specifications:
  • Mass: < 180 g for ORU plug, < 95 g for receptacle
  • Misalignments: Δα = ± 0.9°, Δβ = ± 0.9°, ρ = 1.95 mm
  • Overstroke: ΔX ≥ 1.5 mm
  • Contact resistance as per MIL-DTL 39029
Materials and Finishes:
  • Shells: Aluminium alloy 7075 with Nickel plating
  • Inserts: Epichlorhydrile + Polyal + Glass fiber or Polyetherimide resin
  • Grommet: Silicone
  • Contact retaining clip: Copper alloy
  • Springs: Stainless steel
Mating/Demating Forces:
  • Various configurations with forces ranging from 62 N to 161 N for mating and 52 N to 158 N for demating
Connector Configurations:
  • 8977 Series includes various plug and receptacle configurations with different contact types (power, coax, signal)
Launching Security Device (LSD):
  • Designed to secure the connector plug shell during flight
  • Prevents movements caused by vibrations and acceleration
  • Requires manual action to lock again after unlocking
Tools for Contacts:
  • Crimping, insertion, and removal tools specified for different contact sizes
ERA Model:
  • Features similar to JEM connectors with hybrid layout
  • Used on ERA interface with ORU and Russian Modules
See more

Catalog excerpts

8977 Series-1

Circular Robotic Connectors Electrical Contact resistance as per MIL-DTL 39029 In the frame of Space Station Alpha program, SOURIAU has developed and qualified a series of Quick Disconnect high reliability circular connector for robotic operations. This hardware is used as ORU interface on the JEM (Japanese Experiment Module Exposed) Facility which is part of the Japanese contribution to the Space Station. These connectors feature : • Low Insertion Force contacts • Thermal gradient compatibility • Integrated misalignement catching system • High durability (6000 operations) • High EMI shielding efficiency • Deep space environment (Atox) compatibility • Arrangements from MIL-DTL-38999. Mechanical Mass • < 180 g for ORU plug • < 95 g for receptacle ORU plug misalignments • Aa = ± 0,9° (movement around the X axis) • A|3 = ± 0,9° (angle authorized between the panels) • p = 1,95 mm (plane movement according to Y and Z requirements) ORU receptacle overstroke • AX > 1,5 mm (1) Configuration 3 # 16 optical contacts + 3 # 16 electrical contacts (2) At room condition before compliance mechanism acting.

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8977 Series-2

Circular Robotic Connectors Part Number / Characteristics SOURIAU Part number Male insert (in front view) (pc) : power contact ; (cc) : coax contact ; (sc) : signal cotnact

 Open the catalog to page 2
8977 Series-3

Circular Robotic Connectors Dimensions for Quick Disconnect (QD) Connector Receptacle

 Open the catalog to page 3
8977 Series-4

Circular Robotic Connectors Dimensions for Launching Security Device (LSD) LSD Receptacle

 Open the catalog to page 4
8977 Series-5

Circular Robotic Connectors Presentation & Configuration for coupling Receptacle & Plug Before mating After mating During the mating operation, the receptacle comes up to plug. The front of plug enters in receptacle cone. When plug touches the cone, this induces a lateral movement of plug shell relatively to the flange fixed on panel. This movement stops when the plug shell axis is in conformance with the receptacle ones. The axial movement induces engagement of the plug shell key in the plug receptacle keyway, its entry cone inducing the rotation of plug shell around the X axis. At the end of...

 Open the catalog to page 5
8977 Series-6

Circular Robotic Connectors Receptacle Panel cut-out Without Launching Security Device (LSD) Plug QD connector with Launching Security Device (LSD) Plug Receptacle Crimping, Insertion & Removal tools for contacts Size contacts

 Open the catalog to page 6
8977 Series-7

Circular Robotic Connectors ERA Model In the frame of Space Station Alpha program, SOURIAU has developed a series of high reliability circular connector for robotic operations. This hardware is used on ERA (European Robotic Arm) interface with ORU (Orbital Replacement Unit) and Russian Modules. These connectors feature : • Low Insertion Force contacts • Thermal gradient compatibility • Integral misalignment catching system • High durability (20.000 operations) • High EMI shielding effectiveness • Deep space environment (ATOX) compatibility • Hybrid layout.

 Open the catalog to page 7
8977 Series-8

Circular Robotic Connectors Dimensions (mm) • ERA Receptacle

 Open the catalog to page 8
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