MechChem Africa

With a reputation for quality and flexibility, Parnis Manufacturing’s roots and expertise go back over 40 years in the mining and energy sector. Today, the company continues to take its capability in machining, refurbishment and niche fabrication to new heights, and into new sectors.

Parnis ManufacturingAccording to Gary Colegate, general manager of Parnis Manufacturing, customers are more than ever in search of well-experienced partners with both technical capacity and responsiveness to help them implement demanding projects.

“Difficult market conditions in recent years – especially in the mining sector where we have long been very active – have raised the importance of quality refurbishment as a strategy to contain costs, whether in existing or greenfield projects,” says Colegate. “This looks unlikely to change in the near future, with the situation being further aggravated by the uncertainty regarding the new Mining Charter and its requirements, even though this has been put on hold.”

The company has decades of experience in equipment such as mine winders and their components, boiler components, fans and fan casings, mill heads and sheave wheels, to mention but a few.

“Our large vertical boring machine puts us at an advantage over most of our competitors and allows us to tackle a wide range of engineering projects, where we can assure customers of as-new results,” he says.

Strong technical capability

Vertical boring capacity at Parnis extends to a table size of 4.5 m, a turning diameter of 5.3 m and a turning height of 3.2 m, with a maximum load of up to 50 t. Other equipment includes horizontal borers with capacity up to 5.5 m longitudinal travel by 2.5 m high, milling machines with 4.5 m longitudinal travel and a height 1.8 m and an overhead crane lifting capacity of 50 t using a tandem lift.

“We recently delivered a completely refurbished mine winder to a privately owned gold mine in Zimbabwe,” he says. “The equipment – which dates back to the early 1950s – was used for decades on a South African gold mining operation. It was then purchased for use in Zimbabwe and needed to be returned to a high operational standard.”

The work on the winder for the Zimbabwean mine included stripping down, cleaning and building up of worn areas and extensive machining, which was all done on the strength of comprehensive dimensional reports and in close consultation with the customer, who contributed its own mine winder experience in guiding the refurbishment process. The machining of the main winder shaft, for instance, required the customisation of all the related components in line with new size requirements; items such as white-metal bearings and seals then had to be procured according to the exacting tolerances of the reconditioned shaft.

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BANNER 8

Contact MechChem Africa

Title: Editor
Name: Peter Middleton
Email: mechchemafrica@crown.co.za or peterm@crown.co.za
Phone: +27 11 622 4770
Fax: +27 11 615 6108

Title: Editor
Name: Glynnis Koch
Email: mechchemafrica@crown.co.za
Phone: +27 11 622 4770
Fax: +27 11 615 6108

Title: Advertising Manager
Name: Brenda Karathanasis
Email: brendak@crown.co.za
Phone: +27 11 622-4770
Fax: +27 11 615-6108

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