Production methods

Quality control/testing


Ship & deliver

We design, develop and manufacture couplings, test and control their quality, keep a large stock and ship your order when and where you ask us to. Throughout this process we aim to be your trusted partner. By working closely together, we find integral solutions to all questions: we co-create the future.


Whether you request a standard or a tailor-made solution, with our own R&D and production facilities we always have the right knowledge to provide integral solutions.

Our in-house research and development team will study all new product requests. If a standard product can’t do the trick, R&D will design a tailor-made product that can. Not only new products are researched thoroughly. Standard products never escape our attention either. Their quality is continuously improved.


Driven by passion we always work collaboratively towards the best solution

Pouring melted metals into molds to create products in all customized shapes, for all possible applications: that’s roughly how couplings are made at LMC-Couplings. 4 different ways are used to manufacture the perfect coupling for your installation. Every step in the process is closely monitored to create flawless products.


Sand casting 
Sand casting is used to produce brass, bronze and aluminum cam & groove couplings. The process begins with the fabrication of a ‘pattern’ of the finished component, which is often in two pieces due to the mould construction method. The mould containing the sand is called a flask, and is also in two pieces: the top (or cope) and the bottom (or drag) which are separated by the center line. Holes – the sprues - are used to feed the molten metal into the flask. Other holes – the risers - allow air bubbles to escape.To begin the casting process, the flask is divided into its two parts. When the pattern has been inserted, the flask gets reassembled. Sand is then packed very tightly around the pattern; the flask is opened and the pattern removed. The sand imprint is checked carefully, and any additional risers and sprues are added where necessary (if not included in the original pattern). The flask is closed again and molten metal poured into the sprues until it emerges from the risers.Once the metal has cooled, the flask is broken and the casting removed. The sand is cleaned and recycled for future casting operations.

Investment casting 
LMC-Couplings stainless steel cam & groove couplings and handles are produced using the investment casting process. The basic concept of investment casting is the creation of a sacrificial wax or plastic mould, which is then coated with refractory material to form the casting mould.Model makers create metal dies containing the primary patterns. Wax is injected into these dies to create a wax pattern. The wax pattern contains many different patterns gated together by sprues and risers. The wax pattern is then covered with a refractory material by dipping in ceramic slurry, or coating with refractory moulding material. The mould is then baked, and the wax allowed to drain out or vaporize. Molten metal is then poured into the mould. Removing the cast metal from the mould is difficult because the mould material often resists to removal. Chemicals, high-pressure water jet washing and sand blasting are some of the methods used to remove moulds.

Die casting
The basis of the die casting process is to force molten metal into a reusable mould under high pressure. When the metal has cooled down, the mould will be opened and the casting is ejected. Moulds for die-casting are quite complex, and are usually made from steel alloy in two sections (the cover and ejector). The die must be able to withstand high temperatures and pressures, and so is typically made from steel alloys containing chromium or tungsten. To increase die life and improve throughput, dies are normally cooled using water, air or nitrogen. There are two major types of die-casting machines. Hot chamber die-casting machines are used for low melting point materials.In cold chamber die-casting, the metal is fed from the holding furnace into a chamber, from where a plunger forces it into the die. Materials best-suited for die casting are zinc, aluminum, magnesium, copper, lead and tin. High pressure die-casting is generally limited to non-ferrous metals, due to the difficulty of making refractory moulds capable of withstanding the high temperatures and pressures involved.

Drop forging
Drop forging is a production process in which the mechanical strength of the finished product is made by use of a forging installation. The raw material (brass or aluminum) is preheated and then forged into the final mould. Afterwards the forged part is machined to its final shape. Due to the forging process the intergranular structure is crossed and forms a highly mechanical resistant part.Forged couplings at LMC-Couplings are for example brass TW couplings, brass and aluminum safety clamps.


We strive for perfection that makes you money

As a coupling that works well can not only save, but also make you money, LMC-Couplings aims at perfection. Quality and lifespan of products and prototypes are checked using an impressive collection of in-house testing facilities. The experience we gain from testing, contributes highly to our ongoing R&D program, which benefits all new projects.

Read more about the testing program here.


With over 3000 products in stock we can easily serve a wide range of industries

Over 3000 different products are waiting in our warehouse to be packed and shipped to you, whenever you need them. With its strategic location near Brussels, our large warehouse is the perfect hub, to not only store all products but also get them across Belgium and Europe in no time.


Our large capacity allows us to act fast when we receive stock item orders

Unforeseen circumstances, damaged goods or an urgent order? Sometimes, patience is not an option. LMC-Couplings wants to meet your needs by shipping your orders as soon as possible.

Thanks to a stock capacity of 6400m² and a wide and deep product range, LMC-Couplings  covers almost the whole range of industrial couplings in today's market. All couplings are designed, produced and tested in compliance with the latest standards. Our large stock and product range allows us to act fast when we receive any stock item order.

Contact our team for special or fast deliveries