Circular Connectors - Backshells and Cable Clamps

Image	Part Number	Description / PDF	Quantity	Rfq
	192990-1600 VEAM	CONN BACKSHELL W/CLAMP SZ 24 BLK	0
	057-3397-000 VEAM	CVA 8 20 E/B L A206	0
	995-0002-556 VEAM	AB MS3057-20A C/CLAMP CAD/OD	0
	057-8553-100 VEAM	END BELL ASSY CA-COME SIZE 14S	0
	057-3011-017 VEAM	E/B 057-3011-017F20C	0
	026-0450-100 VEAM	SS-5 SS-6 SS-7 CLAMP *SPECIAL	0
	MS3057-6AT29 VEAM	CLAMPA VAR T29 AL 14S	0
	MS3057-20CT119 VEAM	CLAMPC VAR T119 AL 32	0
	192993-0092 VEAM	TRI TNM SHIELDED ENDBELL SZ12	0
	A97857FR-28-29 VEAM	J1772 EVC BACKSHELL	0
	057-3005-017 VEAM	E/B 057-3005-017F08C	0
	320-0134-003 VEAM	DSUB KIT B/S DD POLARIZED,"C	0
	057-0686-002 VEAM	CONN CABLE CLAMP SZ 16 SILVER	0
	057-8557-100 VEAM	BACKSHELL CABLE CLAMP	0
	FRVE3057-4CT39 VEAM	IR CLAMPC T39 AL 10SL FR	0
	018220-0010 VEAM	18 C/C SZ 18 ALUM/BRS SCRWS	0
	E/B ASSY CV6E18-1 A71 VEAM	E/B ASSY CV6E18-1 A71	0
	MS3057-32C VEAM	SZ 44 C STYLE C/C	0
	192900-0580 VEAM	TRI R E/B RANG 24	0
	995-0002-559 VEAM	AB MS3057-6A C/CLAMP GRN ZINC	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