Metal Cable Gland with Anti-Kink Spring
GNBCG
Product Overview
Metal Cable Gland with Anti-Kink Spring
Cable overbending at the gland exit point is one of the most common failure modes in industrial installations. GNBCG's metal spring sleeve extends from the cable exit, distributing bending stress progressively along the sleeve length — preventing the localized over-bending that causes conductor fatigue fractures in dynamic environments.
Nickel-plated brass body with spring steel clamp assembly, paired with EPDM high-performance sealing. Excellent anti-kink, pull-out resistance, and waterproofing. Static -40°C to 100°C; customizable to -60°C to 220°C. Supports multiple international thread standards.
Key Features
- Spring sleeve anti-kink protection: Progressive bending design distributes stress along the sleeve, preventing single-point overbending damage at cable exit
- Spring steel high anti-kink structure: Absorbs torsional stress better than solid metal alone — extends cable service life in high-vibration dynamic environments
- Nickel-plated brass corrosion-resistant body: Metal strength with long-term resistance to salt spray and chemical environments
| Specification | Details |
|---|---|
| Body Material (A/C/F parts) | Brass + Spring Steel assembly (partially nickel-plated brass) |
| E-Part Material | PA66 Nylon (UL94V-2); V-0 upgrade available |
| Seal Material (B/D parts) | EPDM; customizable: cold-resistant / high-temp / acid-alkali / chemical / anti-corrosion |
| Special Feature | Spring sleeve at cable exit — prevents cable overbending |
| Working Temp (Static) | -40°C to 100°C (standard); customizable to -60°C to 220°C |
| Thread Standard | Metric / PG / G (PF / BSP / PS) / NPT |
Engineering Drawing
Application Scenarios
Industrial Automation / Robotic Arms
Robotic arm cables repeatedly flex at the exit point. The spring sleeve provides progressive protection that significantly reduces the risk of conductor fatigue failure at the gland exit.
Outdoor Control / Marine Equipment
Nickel-plated brass resists salt-spray corrosion. Combined with custom EPDM seals, it provides reliable long-term protection for marine electrical systems and coastal outdoor installations.
High-Vibration Heavy Machinery
Spring steel absorbs torsional stress in sustained vibration environments, preventing cable loosening or abrasion — suited for heavy machine tools and compressor surroundings.
Frequently Asked Questions
Q1｜What does the spring sleeve do? How does it differ from a standard cable gland?
A standard cable gland provides no support at the cable exit. Repeated bending or vibration causes the cable to flex repeatedly at that single exit point, eventually fatiguing the insulation and breaking conductors. GNBCG's spring sleeve extends outward from the exit, distributing bending stress along the sleeve's full length (progressive bending) — preventing concentrated single-point stress and significantly extending cable service life.
Q2｜Which cable types is GNBCG suitable for? Are there cable OD restrictions?
GNBCG suits all types of industrial cables, control cables, and power cables. The cable outer diameter (OD) range varies by model — cross-reference the cable entry diameter (d value) in the engineering drawing on this page to confirm your cable OD is within the applicable range. Contact sales with your cable part number for sizing assistance.
Q3｜The spring is metal — will it rust in outdoor environments?
The spring sleeve is made from spring steel, which performs well in general indoor industrial environments. For outdoor or salt-spray environments, two factors apply: ① periodically inspect the spring visually for rust signs — if the environment is highly corrosive, discuss spring surface treatment options with sales; ② the main body seals can be upgraded to an EPDM anti-corrosion formula for enhanced weatherproof performance. These are separate components and should be assessed independently.
Q4｜Which thread standards does GNBCG support? Which export markets is it suited for?
GNBCG is available in Metric, PG (German standard), G (PF / BSP / PS — British standard), and NPT (American standard), covering European, Asian, and North American equipment interface standards — suitable for equipment manufacturers stocking for multi-market export in a single order.
Q5｜Standard version is rated to 100°C — what if my application exceeds this?
GNBCG's standard version is rated for static use at -40°C to 100°C. A customizable -60°C to 220°C wide-temperature version is available for applications exceeding this range. Wide-temperature customization involves seal formula and base material adjustments — contact sales with your operating temperature and environment details to confirm the custom specification and pricing.
Features
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Specifications
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