Client feedback
Feedback from maintenance leads and plant engineers who rely on our machining and automation work to keep their lines running.
Pieter Marais
Maintenance Manager, Agri-Processing Plant
"We had a conveyor drive shaft failing every six weeks. Voltronix re-engineered the component with a hardened alloy and tighter tolerance. That was nine months ago — no unplanned downtime since."
Johan Nel
Operations Director, Mining Equipment Supplier
"Their robotic welding cell cut our rework rate from 8% to under 1% on bucket assemblies. The team also documented the weld parameters so our QC could verify every batch without guesswork."
Sipho Dlamini
Engineering Lead, Food Processing Facility
"The multi-axis milling work on our auger flights came in at ±0.01 mm as specified. Fit-up on site was seamless, and the stainless finish passed our hygiene audit without issues."
Thabo van Wyk
Workshop Supervisor, General Manufacturing
"We sent them a worn gearbox housing with no drawings. They reverse-engineered it, machined the replacement, and had it back to us in five working days. Fit was perfect."
Lerato Mokoena
Procurement Manager, Agricultural OEM
"Their calibration certificates come with every batch, and the tolerances are consistent across repeat orders. That level of traceability makes our supplier audits straightforward."
Hennie Botha
Plant Engineer, Mining Services Contractor
"The bespoke machine they built for our liner handling operation runs two shifts a day without issues. The control system is straightforward for our operators to use."
Service Terms & Clarifications
The following notes define how we quote, machine, and hand over work. They exist so that every production run starts with the same understanding of materials, inspection, and responsibility.
Unless stated otherwise on the quotation, all raw material is supplied by the client. We machine to your specified grade and condition. If we source material on your behalf, the cost is passed on at invoice value with no markup.
Every job needs a dimensioned drawing or a 3D model in STEP or IGES format. Critical features must be marked with GD&T callouts. We cannot accept responsibility for parts machined from sketches without full dimensioning.
Standard machining tolerance is ±0.05 mm. Tighter tolerances down to ±0.005 mm are available on request and are confirmed in writing before production begins. Tolerances not stated on the drawing are assumed to be standard.
First-off inspection is performed on every batch. A full dimensional report can be issued for an additional fee. We recommend this for high-volume runs where traceability matters. Reports are sent within two working days of dispatch.
Standard finish is 3.2 µm Ra. Finer finishes such as 1.6 µm or 0.8 µm Ra are achievable but may require additional machining time and cost. Surface finish requirements must be noted on the drawing or in the request for quotation.
Changes to the drawing after the quotation is accepted may affect both lead time and price. We confirm any revision in writing before proceeding. Unapproved changes to the original specification are not machined.
Standard lead time is 10 to 15 working days from approval of the final drawing and receipt of material. Prototype runs may take longer depending on complexity. We dispatch via courier to any major centre in South Africa, or you may collect from the workshop.
We warrant that machined parts conform to the agreed drawing and specification. Liability is limited to the value of the parts supplied. We are not liable for failures caused by incorrect material selection, design flaws, or misuse after delivery.
Workshop Capabilities
Every production run at Voltronix Engineering moves through calibrated equipment and certified quality checks. From single prototype components to full automation cells, the workshop is set up to handle the full cycle of custom mechanical work.
Five-axis machining centers cut complex geometries in a single setup, holding tolerances to ±0.005 mm. Ideal for mining equipment housings, agricultural implements, and intricate OEM parts where dimensional accuracy is non-negotiable.
Precision turned shafts, bushings, and fittings paired with laser-cut profiles for fast, repeatable production. The turning department handles both bar work and chucked components, while laser cutting delivers clean edges on sheet metal up to 20 mm thick.
Automated welding stations deliver consistent weld seams across high-volume production runs. Programmed for repeatability, they reduce rework and improve operator safety, particularly for structural frames and food-grade stainless assemblies.
Belt, roller, and chain conveyor systems designed to match your facility layout and material flow. We handle the mechanical build, drive selection, and control wiring so lines run smoothly from intake to packaging.
Custom machines designed and assembled for specific production tasks, from assembly fixtures to fully automated workstations. Our toolmakers build the frame, integrate pneumatics and sensors, and commission the unit on your floor.
Every component is checked against your drawing before it leaves the workshop. CMM inspection, surface finish verification, and material certificates are available for critical parts, with full traceability for audited industries.
Engagement Formats
Every job comes with different requirements. Choose the format that fits your project stage, from one-off prototypes to fully integrated automation lines. All options include access to our toolmakers and quality documentation.
For individual parts or short runs that need tight tolerances and certified material traceability. Typical for replacement parts, jigs, and custom fittings.
For components with intricate geometries, deep cavities, or angled features that require 4- and 5-axis machining in a single setup.
For production lines that need robotic welding cells, conveyor systems, or bespoke machines built and commissioned on site.