Circular Connectors - Backshells and Cable Clamps

Part Number	Description / PDF	Quantity
TXR40AZ00-2007AI TE Connectivity Aerospace Defense and Marine	CONN BACKSHELL ADPT SZ 21G BLK	34
TXR40AB90-1008AI TE Connectivity Raychem Cable Protection	CONN BACKSHELL ADPT SZ 11B OLIVE	0
IP-UNCB24N PEI-Genesis	UNIVERSAL 24 ELECTRO NICKEL	270
M85049/69-15W Socapex (Amphenol Pcd)	CONN BACKSHELL SHRINK BOOT SZ 15	0
TXR54AB00-2012AI TE Connectivity Aerospace Defense and Marine	CONN BACKSHELL ADPT SZ20 37 OLIV	36
BTH3-09-04-1-B-SE TE Connectivity Aerospace Defense and Marine	BANDING BACKSHELL, 90 DEG	25
97-3057-1016(621) Amphenol Industrial	CONN CABLE CLAMP SZ 24 28 BLK	0
TXR40AB90-1205AI TE Connectivity Raychem Cable Protection	CONN BACKSHELL ADPT SZ 13C OLIVE	0
UT024JC Souriau-Sunbank by Eaton	CONN BACKSHELL W/CLAMP SZ24 PG29	0
TNA16CC-SE00L VEAM	CONN BACKSHELL W/CLAMP SZ 16	92
A8504951S22A Socapex (Amphenol Pcd)	CONN CABLE CLAMP SZ 22 BLACK	0
TXR40AB00-0804AI TE Connectivity Aerospace Defense and Marine	CONN BACKSHELL ADPT SZ 9A OLIVE	25
UT024JCPGN Souriau-Sunbank by Eaton	UTO BACKSHELL	0
A8504938S15A Socapex (Amphenol Pcd)	CONN CABLE CLAMP SZ 15 BLACK	19
IP-UNAC20W-PG21 PEI-Genesis	CG ADAPTER 20 OD CAD PG21	0
97-67-28-16 Amphenol Industrial	CONN CABLE CLAMP ADPT SZ 24/28	26
UT0S14JCSL Souriau-Sunbank by Eaton	CONN BACKSHELL W/CLAMP SZ 14	18
A8504952S20N Socapex (Amphenol Pcd)	CONN CABLE CLAMP SZ 20 SILVER	28
TR24ASR1N VEAM	CONN BACKSHELL W/CLAMP SZ 24 BLK	99
UT0S24JCS Souriau-Sunbank by Eaton	CONN BACKSHELL W/CLAMP SZ24 PG29	0

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