A Global Defence Technology Company
A Division of Denel Group of suppliers of Defence Products and Solutions
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Gear Ratio

Gear Ratio's product portfolio ranges from in-house custom-designed and manufactured solutions to standard drive-train options developed in partnership with strategically selected world-class partners.

Products include power shift transmissions, axles, transaxles, torque converters, transfer gearboxes, wheel stations and traction gears, which are used in special on-and off-road vehicles, mining and earthmoving equipment, military vehicles, traction locomotives and industrial machinery.


Manufacturing Equipment

  • CNCMachining
  • CNC Turning
  • Gear Grinding
  • Gear Hobbing
  • Gear Shaping
  • Spline Hobbing
  • Broaching
  • Conventional Grinding

Heat Treatment Equipment

  • Normalising
  • Annealing
  • Hardening
  • Carburising
  • Gas Nitriding
  • Induction hardening
  • Metallurgical Laboratory Service

Surface Treatment

  • Shot blast
  • Plating
  • Spray painting of in-house products

SHE, Quality Control & Assurance

  • Certified to ISO 9001:2015, ISO 14001:2015 & OHSAS 18001:2007
  • Coordinate measuring machines
  • General measuring equipment

Product Testing

Computerised full-load transmission test

Unit for automatics power shift transmissions

Computerised Clark / Dana transmissions test unit

Electrically driven variable speed test bay

Dynamometers for testing Powerpacks


Gear Ratio has experience and skills to design and manufacture custom-made driveline solutions competitively.


Power shift transmissions

  • HSV transmission
  • REMAT transmission

Transfer gearbox

  • ADT drop down gearbox
  • FV430 transfer gearbox
  • RGR17T transfer gearbox for the RG31
  • Custom made gearbox

Support Service:

Our product support services range to the following:

Spicer Off- Highway Systems

Gear Ratio is the sole Spicer Off- Highway service centre for South Africa.


  • Clark / Dana power shift transmissions
  • Clark / Dana and Hurth axles
  • Clark / Dana torque converters
  • Electronic controls
Photo Gallery

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Please continue to download documents relevant to this page.

  • RGR17T 4x4 Transfer Case Brochure
  • RGR32MTC Transfer Case Brochure
  • RGR35MTC 4x4/6x6 Transfer Case Brochure
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Contact Denel

Contact us directly or feel free to send us an online enquiry.

+27 11 747 3300
12 Barnsley Road, Benoni, 1501
Private Bag X049, Benoni, 1500

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