Single-Entries

With the SKINTOP® single-cable entry systems, your cables are fastened in no time at all: simply insert the cable and twist. The cable is secured, centred, hermetically sealed and has optimum strain relief. With us, you will find single-cable entry systems made of plastic, brass and stainless steel.

What is a single-cable entry system or a single cable gland?

In general, all cable glands are used to insert a cable or insulated conductor into a housing. The housing belongs to a device, machine or control cabinet.

LAPP single-cable entry systems or single cable glands are cable glands designed for inserting a single cable into a housing.

LAPP multi-cable entry systems, by contrast, are cable glands with which multiple cables can be safely inserted.

You can find our innovative multi-cable entry systems here.

Easy handling and high ease of assembly are desirable for practical use of a single-cable entry system. The electrician must be able to assemble a cable gland easily.

Ensuring a secure fit in no time at all!

What product groups are within the single-cable entry systems?

At LAPP, we differentiate between the various single-cable entry systems according to their material:

Which cable gland is suitable for which application?

The application possibilities for cable glands and special single-cable entry systems are varied and individual. It is almost unthinkable to make a general statement as to which product is suitable for which application area.

The fact is that in addition to quality, the correct use of a cable gland is the most important factor for functional reliability. For this reason, we would like to remind you to observe all relevant standards for your intended application.

But how do you select the right cable gland for your application?
We have created a small checklist that can be used to answer a few questions in advance.

  • Which connection thread is required (metric, NPT, PG)?
    Find out more about the different thread types.
  • What thread size is required (e.g. M 20)?
    Find out more about choosing the correct metric thread size.
  • Is compliance with certain standards or special product certification required (e.g. UL or VDE)?
    Find out more about the most relevant standards in the field of cable glands.
  • In which temperature range will the product be used?
  • Which IP protection class should be available, depending on the environmental influences?
    Find out more about IP protection classes.
  • Are special product properties required that a conventional cable gland does not cover (e.g. much higher strain relief, special bending protection for the cable, etc.)?
    Take a look at our special products for the respective product groups: plastic, brass or stainless steel.
  • Is more than just one cable to be fed through?
    The LAPP sealing inserts for single-cable entry systems are here.

Would you like more support when selecting products?


What types of threads are there for cable glands?

LAPP basically offers you single-cable entry systems with the connection threads listed below. Depending on the borehole in your application, you will need a suitable thread on your gland. The thread types differ in terms of their thread lengths (in mm or inches), their flange angle (60° or 80°) and the number of thread turns.

Metric thread:

The DIN 46320 standard for cable glands with PG thread was withdrawn on 31 December 1999. It was replaced by DIN EN 62444 for metric cable glands.

As a result, only cable glands with a metric connection thread are to be used for new plants and devices from the year 2000. This changeover not only affects glands, but also all housing systems and devices in which cables and wires need to be inserted.

The PG thread sizes PG 7 to PG 48 have been replaced for the time being by the metric threads
M 12 to M 63. Other sizes have subsequently been included in DIN EN 62444, so that a range from M 6 to M 110 can now be covered.

As a safety standard, DIN EN 62444 forms the basis for the technical requirements for a cable gland. It is more than just a design standard with dimensions, such as the superseded DIN 46319 or DIN 46320.

 

The metric thread dimensions are standardised across Europe according to DIN EN 60423.

NPT thread:

The National Pipe Thread, or NPT thread for short, is a conical inch thread based on the US thread standard ANSI B 1.20.1.

The NPT nominal sizes are primarily required for the North and South American markets.

PG connection thread:

The PG connection thread (armoured conduit connection thread) with its 10 dimensions has been around for a very long time (previously DIN 46320 for cable glands with PG thread). However, at the end of the last millennium it was replaced by the metric thread.

The PG thread has since been largely replaced in the field of cable glands, but PG products may continue to be used for replacement measures.

 

Non-threaded cable glands:

Did you know that there are also cable glands that do without a connection thread? Instead of using a connection thread, fastening to the housing using so-called "snap tabs". If you need a thread-free cable gland and the benefits that this brings, please refer to the plastic cable glands product group.

 

Which metric thread size is the right?

Which threaded borehole for which metric thread size?

Fig.: Overview of nominal sizes and corresponding hole diameters for metric threads.

Which clamping range for which metric thread size?

The following overview helps you to choose the correct metric thread size. The clamping range of a cable gland indicates which minimum and maximum outer diameters a cable should have to be inserted in order to guarantee strain relief and the specified IP protection class.

Example: As a result, the clamping range of an M 12 is 3.5 - 7.0 mm.

L-Grafik-KlemmbereichSkintop-v1L-Grafik-KlemmbereichSkintop-v1
Fig.:Ratioof clamping ranges and metric thread sizes.

How does a cable gland seal

When the cable gland is tightened, the cable is gently fastened and sealed firmly by inserting it into a housing. The sealing materials prevent dirt and moisture from getting into the transition from the cable to the cable gland (sealing on the cable side) and from the cable to the housing (sealing on the housing).

How is the sealing realised?

Housing side:

Plastic cable glands up to M 32 have sealing lips that deform in such a way that they allow very high sealing on smooth housing surfaces (IP 68/69).

For larger metric thread sizes, metal cable glands and also for painted, anodised or powder-coated housings, O-rings are usually used to seal the housing even more securely.

On the cable side, various sealing rings and sealing inserts ensure optimum sealing of the cable.

Can more than just one cable be inserted through a single-cable entry system?

Of course! Simply by using a multiple sealing insert.

Take:

The high elasticity of the sealing insert material enables gently clamping up to 16 cables and thus a very scalable packing density. There is no need to replace your current cable glands or adapt the boreholes in your applications.

Which cable glands are available for cables with plugs? 

For pre-assembled data cables:

For data cables with already mounted connectors, it is best to use the slotted SKINTOP® DIX-M AUTOMATION sealing insert. With this multiple sealing insert, you can easily feed your assembled data cables through the cable gland thanks to the longitudinal cut (all common plugs fit through the domed cap nut). Yes, depending on the variant, the insert has several optimally sealing pre-holes with a defined clamping range.

Show the SKINTOP® DIX-M AUTOMATION multi-use in the online shop.

For insertion of up to 30 cables regardless of type:

Our engineers at LAPP have developed the innovative SKINTOP® CUBE system for pre-assembled cables of all kinds (including AS-I bus cables). It consists of a frame and quick-locking modules, which are inserted into the frame. Two halves of a module each hold a cable. This enables the assembly clamped with the module to be routed through the generous frame of the multiple cable gland and quickly fastened to it. Individual replacement is possible without effort at any time.

Display multi-cable entry systems for assembled cables in the online shop.

Which angled glands are there?

Angled cable glands are used in areas where cables and wires need to run in parallel with the housing wall wherever possible. This will reduce the installation height of the application and save space. They can be combined with various other cable glands. Angled glands are typically used in control cabinet construction and lighting and sound technology.

Which cable glands are waterproof?

In order to assess how dense an object is, the specification of an IP protection class in accordance with DIN EN 60529 has been established in Europe. “IP” stands for “Ingress Protection”. The protection class is indicated by two numbers (e.g. IP 65). The first digit indicates whether foreign bodies can penetrate. “6” means “dust-tight” and is the highest protection class for foreign bodies. The second digit indicates how waterproof a product is. It depends on which tests the specific product has passed. Always pay attention to the IP information that can be found for the relevant product in the data sheet or online shop.

Discover the various IP protection classes.

Find out more about waterproof cables, wires and connection systems.

Which glands can be combined with protective conduits?

We supply LAPP conduit glands for protective cable conduit systems under the SILVYN® product brand. More information is available at protective cable systems and guiding systems.


Chapter History/Figures and Facts

When was the first SKINTOP® cable gland launched?

SKINTOP® cable glands have been sold since 1978. Most of the cable glands installed back then are still used in industrial machinery without any problems.

Before SKINTOP®, all cable glands were produced in accordance with the former German industry standard DIN 46320. This standard only regulated the geometries of the gland body and the connection thread. At the time, all threads were PG threads; almost all cable glands on the market were made of brass.

As a result, all commercially available cable glands were almost identical up to the end of the 1970s. The SKINDICHT® SHZ with clamp bracket is the same.

The SKINTOP® cable gland from LAPP was launched in 1978. It was the first polyamide-based cable gland in today's SKINTOP® design. This super-flexible product with huge clamping ranges and a high protection class has revolutionised the entire market.

Even today, all SKINTOP® products are developed and produced by LAPP itself.

 

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