W.D. Hearn sharpens its edge
AT W.D. Hearn Machine Tools’ Cape Town headquarters, Managing Director Graeme Cooper provided a detailed tour of the facility, showcasing the company’s state-of-the-art machinery and technical capabilities. A key highlight was the recent addition of its metrology laboratory, a big change for the company, which traditionally is a metal cutting company.
W.D. Hearn Machine Tools, founded in 1937, is known for its strong reputation that it has built throughout the South African engineering sector. With branches in Cape Town, Durban, Gqeberha, and Johannesburg, W.D. Hearn has become the preferred supplier of CNC equipment to the country’s top job shops and manufacturers, setting itself apart through exceptional after-sales service and technical support.
In 1987, W.D. Hearn sold its first Leadwell CNC machining centre, marking a milestone that would see the company go on to install over 1100 CNC machines across South Africa, including such iconic locations such as Eskom’s Koeberg Power Station. Today, W.D. Hearn represents carefully selected hi-tech suppliers from around the world, providing customers with access to the best precision equipment available.
A key highlight of the visit was W.D. Hearn’s metrology laboratory, a temperature-controlled space dedicated to the calibration and verification of measurement equipment.
“This is our calibration room for measuring equipment,” Cooper explained. “We work down to the micron level. Every piece of metal expands slightly with temperature, so we maintain a constant 20°C environment – the global standard for metrology – to ensure every measurement is perfectly accurate.”
Here, high-precision length bars, each verified to within fractions of a micron, are used to calibrate sophisticated measuring systems. The lab also houses advanced coordinate measuring machines (CMMs), allowing the team to validate parts and ensure total dimensional accuracy before they reach production.
The tour also showcased W.D. Hearn’s investment in reverse engineering tools and laser marking systems. Using 3D scanning arms, components can be digitally captured, reconstructed in CAD software, and machined into precise new forms.
“For example, if you have a bottle design you want to reproduce, you can scan it, convert it to CAD, and then manufacture the mould on our CNC machines,” Cooper explained.
Laser marking, another rapidly advancing technology, is also becoming a key offering. “You can now laser mark directly onto components – even in colour,” Cooper explained. “It’s a big leap forward for product identification and branding in mould manufacturing.”
Among the many leading brands W.D. Hearn represents is NPC Machine (Zhejiang Ning Plastic Machinery Co., Ltd.), a global manufacturer of precision plastic injection moulding machines. Founded in 2009, NPC has rapidly grown into one of China’s most competitive and forward-thinking machinery producers, known for combining high performance, structural innovation, and outstanding reliability.
Through its partnership with NPC, W.D. Hearn is able to offer South African manufacturers access to state-of-the-art injection moulding technology that meets the highest standards of efficiency and quality. NPC’s machines are widely recognised for their stable performance, energy-saving designs, and adaptability across a range of applications, ranging from packaging and consumer goods to industrial components.
With its continued focus on innovation, precision, and customer service, W.D. Hearn Machine Tools is not only building on its proud legacy but also driving the next generation of South African manufacturing forward.
