High-Torque 50mm & Industrial Termination Portfolio
Engineered for mission-critical conductors spanning from 32mm to 44mm OD, designed to satisfy rigorous global mechanical stress and dual IP68 submersion standards.
Engineering 50mm Cable Glands for High-Amperage Global Infrastructures
As megawatt-scale electrification and distributed green energy platforms expand, the 50mm outer diameter (M50 / NPT 1-1/2" to 2") standard is the backbone for high-capacity power transmissions worldwide.
Thermal Dispersion & Cold-Flow Mitigation
Large cross-section conductors carrying 250A to 600A experience cyclic Joule heating up to 90°C. Standard elastomeric grommets suffer permanent plastic deformation (cold flow), triggering ingress failure. Our 50mm cable glands incorporate vulcanized fluoroelastomer (FKM) and engineered cross-linked chloroprene clamping matrices that preserve dynamic tension under continuous thermal loading cycles.
360° Shielding for Variable Frequency Drives
Variable Frequency Drives (VFDs) and utility-scale solar inverters generate high-amplitude electromagnetic interference (EMI). Our brass and 316L stainless steel 50mm glands utilize a patented low-impedance circular spring-finger grounding ring that clamps the braided shield. This delivers over 75dB attenuation up to 1GHz, avoiding false trips in critical signal enclosures.
Mechanical Clamping & Armored Sheath Retention
For steel wire armored (SWA), aluminum wire armored (AWA), and steel tape armored (STA) configurations, standard termination fails to provide sufficient longitudinal pull-out support. Our dual-cone clamping design locks the armor mechanical core with up to 1800N retention strength, ensuring complete strain relief during ground movement or heavy vibration.
Factory Qualification Insight: Every HOONSUN 50mm assembly conforms to BS 6121, EN 50262, and IEC 62444. Manufactured directly in Liushi, Zhejiang, we leverage automated Swiss-type CNC turn-mills to keep thread pitch variation within ±0.015mm, eliminating cross-threading and cold galling during rapid panel deployment.
Macro-Industry Applications: Where Failure Is Catastrophic
50mm cable glands bridge high-power transmission lines and structural enclosures across four major industrial sectors.
Utility-Scale BESS & Inverters
Battery Energy Storage Systems (BESS) experience massive DC currents. Our 50mm glands seal battery containers against water entry during deluge testing, while the flame-retardant seals prevent flame propagation across internal compartments.
Offshore Marine & Wind Platforms
Constant exposure to marine salt spray causes rapid dezincification in standard brass. We supply CuZn39Pb3 brass coated with a 12-micron nickel barrier or Marine-grade 316L stainless steel, passing 1,000+ hours of continuous salt-spray testing.
Hyperscale Liquid Cooling Ingress
Next-generation AI data centers draw megawatts of power using direct-to-chip dielectric coolant loops. Our hybrid 50mm gland adapters prevent coolant seepage into adjacent medium-voltage busway entries and panel connections.
Petrochemical & Hazardous Mining
For Zone 1, Zone 2, Zone 21, and Zone 22 classified installations, our explosion-proof M50 glands provide Ex d flameproof and Ex e increased-safety containment, blocking internal explosion propagation via precision metal labyrinths.
50mm Cable Gland Technical Architecture & Standard Parameters
Reference data for mechanical engineers, EPC electrical designers, and OEM panel assemblers.
| Series Configuration | Clamping Range (Cable Outer Ø) | Thread Sizing Standard | Material Metallurgy | Environmental Rating | Torque Requirement |
|---|---|---|---|---|---|
| M50 Standard Industrial | 32.0 mm – 38.0 mm | ISO Metric M50 × 1.5 (15mm L) | HPb59-1 Brass / Bright Nickel | IP68 (5 bar / 30 min) | 45 – 50 Nm |
| M50 Extended Clamping | 37.0 mm – 44.0 mm | ISO Metric M50 × 1.5 (18mm L) | HPb59-1 Brass / Nickel Plated | IP68 / IP69K | 50 – 55 Nm |
| 50mm Double-Sealed Armored | Inner: 27–34mm | Outer: 33–43mm | M50 × 1.5 or NPT 1-1/2" | CuZn39Pb3 Brass / 316L SS | IP66 / IP68 (Ex d/Ex e) | 65 – 70 Nm |
| M50 316L Marine/Corrosion | 32.0 mm – 42.0 mm | Metric / G (BSPP) 2" | Austenitic 316L Stainless | IP68 / Salt Mist 1000h | 55 – 60 Nm |
| 50mm Polyamide Heavy-Duty | 30.0 mm – 38.0 mm | M50 × 1.5 (Thread length 18mm) | Polyamide PA66 (UL 94 V-0) | IP68 / UV Resistant | 12 – 15 Nm |
Technology Roadmap: Smart Ingress & Green Materials (2025–2030)
How HOONSUN is adapting cable termination hardware for the next decade of power generation and decarbonization.
Embedded Fiber-Optic Dynamic Strain Sensing
For remote offshore wind bases and subsea infrastructure, maintenance visits are costly. We are prototyping 50mm cable glands featuring integrated FBG (Fiber Bragg Grating) dynamic micro-strain sensors. These alert plant engineers if vibration, soil settlement, or ocean currents cause tension exceeding 80% of cable pull-out thresholds before a breach occurs.
Lead-Free Brass & Bio-Circular Polymers
To align with European RoHS and REACH revisions restricting trace lead in copper alloys below 0.1%, HOONSUN has transitioned production to eco-compliant, lead-free silicon-brass formulations (CW724R). Concurrently, our nylon 50mm bodies are moving to 100% castor-bean derived bio-polyamides, lowering carbon footprints without sacrificing IP68 structural stability.
Extreme Cryogenic & High-Heat Elastomers
Liquid hydrogen logistics and molten-salt CSP solar plants operate outside standard temperature envelopes. HOONSUN’s advanced sealing program includes specialized perfluoroelastomer (FFKM) inserts, allowing 50mm terminations to function reliably from -60°C up to +220°C continuous service limits.
High-Performance Clamping, Venting & Fluid Joints
Complete your balance-of-plant systems with complementary pressure-equalization plugs, rapid fluid disconnects, and industrial conduits.
B2B Localized Support, Traceability & Delivery Assurance
Optimized for tier-1 EPC contractors, international electrical distributors, and OEM system builders.
Material Test Certificates (EN 10204 3.1)
Every batch of brass and stainless steel 50mm cable glands is dispatched with certified chemical and mechanical test reports, detailing copper purity, zinc ratios, tensile yields, and plating thickness validations down to heat numbers.
Rapid Factory Buffer Stocking
To support fast turnaround engineering cycles, HOONSUN maintains ready-to-ship inventories of standard M50 and NPT 1-1/2" brass bodies, allowing air-freight dispatch of critical batches within 48 to 72 hours of purchase order validation.
Dedicated Field Engineering Teams
Our bilingual application engineers offer immediate consultations regarding custom thread configurations, extreme outer-diameter tolerances, chemical resistance compatibility checks, and CAD/STEP file distribution for system modeling.
Procurement & Engineering Inquiries: 50mm Cable Glands
Direct technical answers addressing installation compliance, clearance, sealing mechanics, and safety certifications.