Circular Connectors - Backshells and Cable Clamps

Image Part Number Description / PDF Quantity Rfq
A85049399A

A85049399A

Socapex (Amphenol Pcd)

CONN CABLE CLAMP SZ 9 BLACK

52

M85049/91-25T

M85049/91-25T

Socapex (Amphenol Pcd)

COMPOSITE STRAIN RELIEF

25

A8504952S40W

A8504952S40W

Socapex (Amphenol Pcd)

CONN CABLE CLAMP SZ 40 OLIVE

78

M85049/91-23T

M85049/91-23T

Socapex (Amphenol Pcd)

COMPOSITE STRAIN RELIEF

25

A8504939S23A

A8504939S23A

Socapex (Amphenol Pcd)

CONN CABLE CLAMP SZ 23 BLACK

94

M85049/52-1-12N

M85049/52-1-12N

Socapex (Amphenol Pcd)

CONN CABLE CLAMP SZ 12 SILVER

28

A8504952S36W

A8504952S36W

Socapex (Amphenol Pcd)

CONN CABLE CLAMP SZ 36 OLIVE

89

A8504939S15W

A8504939S15W

Socapex (Amphenol Pcd)

CONN CABLE CLAMP SZ 15 OLIVE

22

A8504951S24A

A8504951S24A

Socapex (Amphenol Pcd)

CONN CABLE CLAMP SZ 24 BLACK

24

A8504952S18W

A8504952S18W

Socapex (Amphenol Pcd)

CONN CABLE CLAMP SZ 18 OLIVE

25

M85049/60-2G12Z

M85049/60-2G12Z

Socapex (Amphenol Pcd)

BACKSHELL STRAIGHT SHRINK BOOT 2

25

A8504952S44A

A8504952S44A

Socapex (Amphenol Pcd)

CONN CABLE CLAMP SZ 44 BLACK

50

A8504952S32W

A8504952S32W

Socapex (Amphenol Pcd)

CONN CABLE CLAMP SZ 32 OLIVE

47

A850493919A

A850493919A

Socapex (Amphenol Pcd)

CONN CABLE CLAMP SZ 19 BLACK

58

M85049/92-11T

M85049/92-11T

Socapex (Amphenol Pcd)

COMPOSITE STRAIN RELIEF

10

A8504938S19W

A8504938S19W

Socapex (Amphenol Pcd)

CONN CABLE CLAMP SZ 19 OLIVE

24

A8504939S23W

A8504939S23W

Socapex (Amphenol Pcd)

CONN CABLE CLAMP SZ 23 OLIVE

18

M85049/69-25Z

M85049/69-25Z

Socapex (Amphenol Pcd)

BACKSHELL STRAIGHT SHRINK BOOT D

32

A8504952S22A

A8504952S22A

Socapex (Amphenol Pcd)

CONN CABLE CLAMP SZ 22 BLACK

92

A850493921W

A850493921W

Socapex (Amphenol Pcd)

CONN CABLE CLAMP SZ 21 OLIVE

2

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

TypeFunction FeaturesApplication Examples
Metal BackshellsEMI/RFI shielding, high durability, threaded couplingAerospace avionics systems
Plastic BackshellsLightweight, corrosion-resistant, quick-install designIndustrial IoT sensors
360 Cable ClampsFull-circle compression, vibration resistanceRobotics joint actuators
Split-shell ClampsField-installable, adjustable diameter rangeMarine communication systems
EMI Shielded ClampsIntegrated conductive gaskets, grounding contactsMilitary 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

ParameterValue RangeImportance
Material Temperature Range-55 C to +150 COperational reliability in extreme environments
IP Protection RatingIP65-IP68Dust/water ingress prevention
Cable Diameter Range2-25mmCompatibility with various cable sizes
Insertion Force0.5-5NImpact on field installation efficiency
Shielding Effectiveness60-100dBSignal integrity maintenance
Vibration Resistance10-2000Hz, 10GAerospace/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

ManufacturerRepresentative ProductKey Features
TE ConnectivityDuronic MS BackshellQuick-disconnect, MIL-DTL-38999 compliant
AmphenolSeries 5000 Cable ClampMulti-cable capacity, IP68 rated
MolexToughCrimp Shielded Backshell10G EMI shielding, vibration proof
Weidm llerPROFIBUS Cable ClampFieldbus 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

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