Analysis of Differences Between Our Cable Gland Models: A Precise Selection Guide

As an enterprise deeply engaged in the cable connector field for nearly 20 years, we (Zhejiang Hongxiang Connector Co., Ltd.) have been widely used in industrial automation, new energy, rail transit and other fields with our high-quality cable glands that meet German DIN, VDE and American UL standards. Our product models are rich, covering nylon, metal, explosion-proof, EMC shielding and other series. Different models have significant differences in material, protection performance and functional adaptability, which directly determine the applicable scenarios and use effects. This article will systematically analyze the core differences between our main series models to help users make precise selections.

First, Clarify the Core Classification Logic: Our Model Naming and Series Division

The model naming of our cable glands follows clear rules. The core information usually includes "material code + thread specification + functional attribute + applicable cable outer diameter", such as HX-NPM12 (nylon material, M12 thread), HX-LNM12 EMC (nickel-plated brass, M12 thread, EMC shielding). Our product system is mainly divided into four main series according to "material + function": nylon general series, metal high-performance series, EMC shielding series, explosion-proof/special series. Each series is further divided into specific models according to thread specifications and applicable cable ranges. The differences are mainly reflected in four dimensions: material, protection level, operating temperature and functional adaptability.

Detailed Explanation of Model Differences in Four Main Series

1. Nylon General Series: Cost-Effective Choice for Conventional Scenarios

The nylon series is our most basic and best-selling product line. The core material is PA6/PA66 nylon, focusing on high cost performance and light weight, suitable for conventional industrial scenarios with medium protection requirements. The models of this series are prefixed with "HX-NG" and "HX-NPM", with thread specifications (such as M12, PG7) marked at the suffix, such as HX-NG.PG7S and HX-NPM16.

Core Parameters and Characteristics: The material is flame-retardant PA66, with a fire rating of UL94 V-2/V-0, having good impact resistance and corrosion resistance; the protection level covers IP65 to IP68, among which IP68 models can meet long-term immersion requirements; the operating temperature range is -40℃~+100℃, and can withstand high temperature of 120℃ for a short time; thread specifications include metric (M10, M12, M16, etc.), PG specifications (PG7, PG9, PG13.5, etc.), suitable for cable outer diameters ranging from 3mm to 44mm.

Key Points of Model Differences: The differences between internal models of this series mainly lie in thread specifications and applicable cable outer diameters. For example, HX-NPM12 (M12 thread, suitable for 3-6.5mm cables) and HX-NPM20 (M20 thread, suitable for 6-12mm cables). Users need to select corresponding models according to cable thickness and equipment interface specifications.

Applicable Scenarios: Ordinary industrial equipment, household appliances, control cabinet wiring, outdoor equipment in non-corrosive environments (such as ordinary lighting, small sensors), etc. It is preferred for scenarios pursuing cost performance and basic protection.

2. Metal High-Performance Series: Strong Protection + High Durability for Harsh Scenarios

The metal series focuses on high-performance protection. The core materials are nickel-plated brass (mainstream) and 304/316 stainless steel (customized). Compared with our nylon series, it has stronger compression resistance, corrosion resistance and high temperature resistance, suitable for harsh scenarios such as humidity, salt spray and vibration. The models of this series are prefixed with "HX-NPM" (nickel-plated brass) and "HX-NPM-XX" (extra-large), such as HX-NPM64 and HX-NPM100 (extra-large).

Core Parameters and Characteristics: The material is nickel-plated brass with galvanized surface treatment, having excellent oxidation resistance and salt spray resistance; the protection level is uniformly IP68 (10bar pressure), which can cope with extreme humid environments such as deep-sea immersion and high-pressure spray; the operating temperature range is consistent with our nylon series, but the thermal stability of metal material is stronger, and it is not easy to age after long-term use; the clamping part is made of PA66 nylon, and the sealing part is NBR (nitrile rubber) or silica gel, balancing fixing force and sealing performance; thread specifications cover M10 to M120, among which extra-large models (such as HX-NPM120) are suitable for large-diameter cables of 78-84mm, meeting the wiring needs of large equipment.

Key Points of Model Differences: In addition to thread specifications and cable adaptation ranges, this series is divided into conventional type and extra-large type. The conventional type (M10-M63) is suitable for ordinary industrial equipment, and the extra-large type (M64-M120) is suitable for large-cable wiring scenarios such as large motors, wind power equipment and new energy power stations; our customized stainless steel models (need to consult separately) have stronger corrosion resistance than nickel-plated brass, suitable for coastal salt spray and chemical corrosion environments.

Applicable Scenarios: New energy power stations, coastal wind power equipment, chemical workshops, mining machinery, rail transit equipment, etc., harsh scenarios with high requirements for protection level and durability.

3. EMC Shielding Series: Anti-Interference Core for Precision Electronic Scenarios

The EMC (Electromagnetic Compatibility) shielding series is a derivative of our metal series. Its core advantage is reliable grounding and electromagnetic shielding functions, which can effectively block electromagnetic interference and ensure the signal transmission stability of precision electronic equipment. The models of this series are prefixed with "HX-LN...EMC", with thread specifications marked at the suffix, such as HX-LNM12 EMC and HX-LNPG7/EMC.

Core Parameters and Characteristics: The material is nickel-plated brass, consistent with the basic material of our metal series, with a protection level of IP68; the core difference is equipped with EMC lock nut, which realizes reliable grounding through edge cutting of the coating surface to form an electromagnetic shielding loop; thread specifications cover M12 to M100, PG7 to PG63, G/NPT British/American specifications, suitable for cable outer diameters ranging from 3mm to 84mm; the operating temperature is consistent with our metal series, suitable for the working environment of precision electronic equipment.

Key Points of Model Differences: The differences between models of this series mainly lie in thread specifications (adapting to different equipment interfaces) and applicable cable outer diameters. For example, HX-LNM16 EMC (M16 thread, suitable for 4-8mm cables) and HX-LNPG13.5/EMC (PG13.5 thread, suitable for 6-10mm cables). It is necessary to select according to equipment interface type and cable specifications.

Applicable Scenarios: Communication base stations, data centers, precision instruments, medical equipment, automatic control systems and other scenarios sensitive to electromagnetic interference. It is preferred for scenarios that need to ensure signal transmission stability.

4. Explosion-Proof/Special Series: Compliant and Safe for High-Risk Scenarios

Our explosion-proof series is specially designed for flammable and explosive environments, strictly complying with European ATEX standards and EN standards, with explosion-proof, fire-proof and anti-static functions, which can effectively prevent safety accidents caused by electric sparks; it also includes special models such as charging pile dedicated and flange type, suitable for specific industry needs. There is no unified prefix for the models of this series, and the explosion-proof grade and applicable scenarios need to be confirmed through our product specifications, such as the flange type model Ф49.5(34-42)-H dedicated for charging piles.

Core Parameters and Characteristics: The main material is nickel-plated brass, and some models adopt flame-retardant nylon; the explosion-proof grade reaches Ex d IIC T6, which can be adapted to high-risk environments such as chemical industry and oil and gas; the protection level is IP68, and the sealing structure is specially designed by us to prevent flammable and explosive gases from entering the equipment; the charging pile dedicated model adopts flange connection, suitable for fixing the charging gun cable, with tensile resistance and aging resistance, adapting to the high temperature and heavy rain environment of outdoor charging piles.

Key Points of Model Differences: Our explosion-proof series is divided into different models according to explosion-proof grades, adapting to different dangerous areas (such as Zone 1, Zone 2); special models are subdivided according to application scenarios. For example, the charging pile dedicated models are divided into Ф49.5(23-31)-H and Ф49.5(34-42)-H according to the applicable cable outer diameter. It is necessary to select according to specific industry scenarios and danger levels.

Applicable Scenarios: Chemical workshops, oil and gas extraction equipment, gas stations, charging piles, mine underground equipment and other flammable and explosive scenarios or scenarios with special installation needs. The selection must strictly check our explosion-proof certification and industry compliance requirements.

Our Cable Gland Model Selection Comparison Table (Core Dimensions)

Key Selection Points: 3 Steps to Lock Our Suitable Models

1. Clarify Scenario Requirements: Prioritize judging whether it is a high-risk environment (needing explosion-proof), whether there is electromagnetic interference (needing EMC), and whether there is corrosion/humidity (needing metal material). For conventional scenarios, our nylon series can be selected.

2. Check Core Parameters: Confirm the cable outer diameter (matching our model adaptation range), equipment interface thread specification (M/PG/G/NPT), and protection level requirements (IP65/IP67/IP68) to avoid mismatching between the model and actual needs.

3. Refer to Compliance Requirements: For high-risk scenarios, it is necessary to confirm our explosion-proof certification (ATEX) and fire rating (UL94). For exported products, it is necessary to check our ROHS and CE certifications. All our series meet relevant standards and can provide certification documents.

Conclusion

The essence of the model differences of our cable glands is "scenario adaptability difference" — our nylon series focuses on cost performance, metal series on strong protection, EMC series on anti-interference, and explosion-proof series on high-risk compliance. Users do not need to blindly pursue high-end models. They only need to combine core information such as scenario needs, cable specifications and equipment interfaces to accurately match our suitable models. As an enterprise with nearly 20 years of R&D and production experience, we can also provide ODM customization services to customize exclusive models for special scenarios (such as extreme high temperature and strong corrosion) to further meet the personalized needs of the industry.