Circular Connectors - Backshells and Cable Clamps

Part Number	Description / PDF	Quantity
UT0S12JC Souriau-Sunbank by Eaton	CONN BACKSHELL W/CLAMP SZ12 PG11	25
TXR40AB90-1207AI TE Connectivity Raychem Cable Protection	CONN BACKSHELL ADPT SZ 13C OLIVE	0
IP-UNCC10G PEI-Genesis	UNIVERSAL 10 GREEN COBALT	759
A8504939S17A Socapex (Amphenol Pcd)	CONN CABLE CLAMP SZ 17 BLACK	90
97-3057-1007(621) Amphenol Industrial	CONN CABLE CLAMP SZ 12SL 14 14S	94
97-67-18-8 Amphenol Industrial	CONN CABLE CLAMP ADPT SZ 18 1-20	32
M85049/52S14W	CONN CABLE CLAMP SZ 12 14 OLIVE	155
IP-UNAK25W-PG29 PEI-Genesis	CG ADAPTER J/25 OD CAD PG29	28
AHDMBS-18-002 Tuchel / Amphenol	BACKSHELL, SIZE 18, AHDM SERIES,	82
A850495218A Socapex (Amphenol Pcd)	CONN CABLE CLAMP SZ 8 BLACK	1
CIRBP40ECHSA TE Connectivity AMP Connectors	CONN BACKSHELL ADPT SZ40 BLK	0
R85049/88-17Z03 TE Connectivity Aerospace Defense and Marine	CONN BACKSHELL BAND SZ 17 E BLK	26
CIRBP28SCHSA TE Connectivity AMP Connectors	CONN BACKSHELL ADPT SZ28 BLK	0
AHDPBS-18-SM01 Tuchel / Amphenol	SIZE 18 SEALED BACKSHELL	128
A8504952112A Socapex (Amphenol Pcd)	CONN CABLE CLAMP SZ 12 BLACK	12
M85049/11-118Z Socapex (Amphenol Pcd)	BACKSHELL STRAIGHT ENVRN 26482 S	25
IP-UNAC8W-PG7 PEI-Genesis	CG ADAPTER 8 OD CAD PG7	124
BTH3-19-13-1-B-SE TE Connectivity Aerospace Defense and Marine	BANDING BACKSHELL, 90 DEG	25
UTG18AD Souriau-Sunbank by Eaton	SHRINK BOOT ADAPTER SHELL SZ 18	38
A850493925A Socapex (Amphenol Pcd)	CONN CABLE CLAMP SZ 25 BLACK	78

Circular Connectors - Backshells and Cable Clamps

1. Overview

Circular connectors backshells and cable clamps are critical electromechanical components that ensure secure cable termination, strain relief, and environmental protection in connector systems. Backshells provide mechanical support and shielding for cable-connector junctions, while cable clamps offer strain relief by securing cables to panels or equipment. These components are essential in maintaining signal integrity, preventing mechanical failure, and meeting industry-specific environmental standards across aerospace, industrial automation, and medical device applications.

2. Main Types and Functional Classification

Type	Function Features	Application Examples
Metal Backshells	EMI/RFI shielding, high durability, threaded coupling	Aerospace avionics systems
Plastic Backshells	Lightweight, corrosion-resistant, quick-install design	Industrial IoT sensors
360 Cable Clamps	Full-circle compression, vibration resistance	Robotics joint actuators
Split-shell Clamps	Field-installable, adjustable diameter range	Marine communication systems
EMI Shielded Clamps	Integrated conductive gaskets, grounding contacts	Military radar equipment

3. Structure and Components

Typical backshell assembly consists of: - Housing (aluminum alloy or thermoplastic) - Cable entry port with sealing ring (IP67 rated) - Strain relief mechanism (serrated clamping ring) - EMI shielding fingers (for metallic versions) - Panel mounting threads (UNF or metric) Cable clamp structure includes: - Two-part housing (upper/lower halves) - Elastomer compression sleeve - Threaded locking screws - Cable contact surface (textured for grip) - Optional grounding tab

4. Key Technical Specifications

Parameter	Value Range	Importance
Material Temperature Range	-55 C to +150 C	Operational reliability in extreme environments
IP Protection Rating	IP65-IP68	Dust/water ingress prevention
Cable Diameter Range	2-25mm	Compatibility with various cable sizes
Insertion Force	0.5-5N	Impact on field installation efficiency
Shielding Effectiveness	60-100dB	Signal integrity maintenance
Vibration Resistance	10-2000Hz, 10G	Aerospace/military compliance

5. Application Fields

Aerospace: Flight control systems, satellite communication arrays
Medical: MRI scanners, patient monitoring equipment
Industrial: CNC machine cabling, factory automation sensors
Transportation: Rail signaling systems, EV battery connectors
Defense: Tactical radio systems, weapon guidance electronics

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
TE Connectivity	Duronic MS Backshell	Quick-disconnect, MIL-DTL-38999 compliant
Amphenol	Series 5000 Cable Clamp	Multi-cable capacity, IP68 rated
Molex	ToughCrimp Shielded Backshell	10G EMI shielding, vibration proof
Weidm ller	PROFIBUS Cable Clamp	Fieldbus protocol optimized design

7. Selection Recommendations

Key selection criteria include: - Environmental factors (temperature, humidity, chemical exposure) - Cable geometry (diameter, jacket material) - Mechanical requirements (vibration, pull-out force) - EMI/RFI shielding needs - Installation constraints (tool access, maintenance frequency) - Compliance standards (MIL-SPEC, IEC 60529) Example: For offshore wind turbine sensors, select stainless steel backshells with IP68 clamps and neoprene sealing to withstand saltwater corrosion and mechanical shock.

8. Industry Trends

Current development trends include: - Hybrid connectors integrating optical and electrical backshells - Additive manufacturing for custom cable clamp geometries - Smart clamps with embedded strain gauges for condition monitoring - Nano-coatings for enhanced corrosion resistance - Miniaturization for UAV and wearable medical device applications - Sustainability focus: Recyclable thermoplastic formulations