Injection Moulding Machine Mechanic

Humankind Group; Pretoria; On-site; ZAR 320,000 - 460,000; Full time

Job summary

Humankind Group seeks an experienced Millwright to diagnose and repair mechanical, hydraulic and pneumatic faults in high‑volume plastic injection moulding machinery. You will overhaul clamps, pumps, screws, gearboxes and related components.

The role requires a Trade Test Certificate in Millwright, Fitter and Turner, or Mechanical Artisan, plus hydraulics/pneumatics training and 35+ years of hands‑on experience with injection moulding equipment. Willingness to work shifts and standby is expected.

Qualifications

• Trade certificate in millwrighting or equivalent required.
• Hydraulics and pneumatics training or certification preferred.
• Extensive hands-on experience with plastic injection moulding machinery.
• Ability to read hydraulic circuit diagrams and pneumatic schematics.
• Experience with welding, machining and rigging.

Responsibilities

• Diagnose and repair mechanical, hydraulic and pneumatic faults on injection moulding machines.
• Overhaul components like clamps, hydraulic cylinders, pumps, screws, barrels and gearboxes.
• Carry out scheduled maintenance to minimise downtime and improve reliability.
• Support mould installations, machine alignment and equipment setup.
• Maintain auxiliary equipment including chillers, dryers, hopper loaders, granulators, robots and conveyors.
• Maintain accurate maintenance records and spare parts usage.
• Coordinate daily work, supervise shift mechanics and fitters, and mentor junior technicians.
• Ensure compliance with safety procedures, including Lockout/Tagout and equipment safety checks.

Skills

Hydraulics

Pneumatics

Welding

Machining

Rigging

Precision measuring

Diagrams interpretation

Shift leadership

Education

Trade certificate: Millwright/Fitter Turner/Mechanical Artisan

N3/N6 in Mechanical Engineering advantageous

Job description

Key responsibilities

• Diagnose and repair mechanical, hydraulic and pneumatic faults on injection moulding machines.
• Overhaul components such as clamping units, hydraulic cylinders, pumps, screws, barrels and gearboxes.
• Carry out scheduled maintenance to minimise downtime and improve machine reliability.
• Support mould installations, machine alignment and equipment setup.
• Maintain auxiliary equipment, including chillers, dryers, hopper loaders, granulators, robots and conveyors.
• Maintain accurate maintenance records and spare parts usage.
• Coordinate daily work, supervise shift mechanics and fitters, and mentor junior technicians.
• Ensure compliance with safety procedures, including Lockout/Tagout and equipment safety checks.

Requirements

• Trade Test Certificate as a Millwright, Fitter and Turner, or Mechanical Artisan/Mechanic Red Seal or equivalent.
• Certification or training in Hydraulics and Pneumatics.
• At least 35 years hands‑on experience maintaining plastic injection moulding machinery in a high-volume manufacturing environment.
• Ability to interpret hydraulic circuit diagrams and pneumatic schematics.
• Practical welding, machining and rigging skills.
• Proficiency with precision measuring instruments.
• A school‑leaving qualification or N3N6 qualification in Mechanical Engineering would be advantageous.

Working conditions

You must be willing to work shifts, including nights, weekends and rotational standby duties, and be comfortable with the physical demands of a factory environment.