Differentials for Heavy Machinery
TOSOG Yellow Plant Solutions

High‑Performance Differentials for Construction, Mining & Industrial Equipment

At TOSOG Yellow Plant Solutions, we specialise in supplying robust, high-performance differentials designed to operate reliably in the harshest working environments. Our differential solutions support demanding applications across construction, mining, quarrying, agriculture, transport, earthmoving, and heavy industrial operations throughout South Africa and the wider African continent.

We supply OEM, premium aftermarket, reconditioned differentials, and complete axle assemblies, ensuring flexible solutions to match your operational requirements, budget, and machine lifecycle. Whether you are maintaining a single machine or managing a large fleet, TOSOG provides drivetrain components that deliver strength, durability, and long service life under extreme load, heat, vibration, and continuous-duty conditions.

A differential is a vital drivetrain component that transfers power from the transmission to the drive wheels while allowing them to rotate at different speeds during turns or when operating on uneven or loose terrain. This controlled torque distribution is essential for maintaining traction, stability, steering control, and tyre life, especially in heavy machinery operating on steep gradients, soft ground, or high-resistance surfaces.

In yellow plant and heavy equipment applications, differentials are engineered to handle exceptionally high torque loads, shock forces, and constant directional changes. Failure or inefficiency in this component can lead to loss of traction, excessive tyre wear, drivetrain stress, reduced fuel efficiency, and costly downtime. That’s why TOSOG sources and supplies differentials manufactured with precision-machined gears, hardened housings, heavy-duty bearings, and advanced sealing systems to ensure consistent performance in the most demanding conditions.

Our differential solutions are widely used across wheel loaders, articulated dump trucks (ADTs), motor graders, bulldozers, backhoe loaders, haul trucks, agricultural tractors, and specialised industrial vehicles. From standard open differentials to limited-slip, locking, planetary, and heavy-duty axle-mounted systems, TOSOG ensures each unit is correctly matched to the machine’s configuration, operating load, and application environment.

By offering complete differential assemblies as well as internal components – including crown wheels, pinions, side gears, bearings, seals, and housings – we help customers reduce downtime, simplify repairs, and extend machine service intervals. Our technical team provides expert support to ensure correct ratio matching, axle compatibility, and application-specific selection, minimising the risk of premature failure.

With a strong understanding of African operating conditions, TOSOG differentials are selected to withstand dust, high ambient temperatures, heavy payloads, and prolonged operating cycles. The result is improved machine reliability, reduced maintenance costs, extended drivetrain life, and a lower total cost of ownership, keeping your equipment productive where it matters most.

What Is a Differential?

A differential transfers power from the transmission to the drive wheels while allowing speed variation between wheels during turns or uneven terrain. In heavy machinery, differentials are designed to handle extreme torque loads, shock, heat, and continuous duty cycles.

Key Functions

• Distributes torque evenly to drive wheels
• Allows wheels to rotate at different speeds
• Improves traction and stability
• Reduces drivetrain stress and tyre wear
• Enhances machine control on uneven ground

Types of Differentials We Supply

Open Differentials

• Standard design for general applications
• Reliable and cost‑effective
• Common in loaders and industrial equipment

Limited Slip Differentials (LSD)

• Improves traction by limiting wheel slip
• Ideal for mixed terrain and wet conditions

Locking Differentials

• Locks both wheels together for maximum traction
• Essential for mining, off‑road, and severe conditions

Planetary Differentials

• Heavy‑duty torque multiplication
• Used in ADTs, large loaders, and haul trucks

Complete Differential & Axle Assemblies

• Drop‑in replacements
• Reduced downtime and installation time

Brands & Equipment That Use Differentials

TOSOG supplies differentials compatible with the world’s leading equipment manufacturers:

OEM & Machine Brands

• Caterpillar (CAT)
• Komatsu
• Volvo Construction Equipment
• Bell Equipment
• JCB
• John Deere
• Case Construction
• New Holland
• Hitachi
• Doosan
• Hyundai
• Liebherr
• Terex
• XCMG
• SANY

Applications

• Wheel Loaders
• Articulated Dump Trucks (ADTs)
• Motor Graders
• Bulldozers
• Backhoe Loaders
• Haul Trucks
• Agricultural Tractors
• Industrial Vehicles

Why Choose TOSOG Differentials?

• OEM & Premium Aftermarket Options
• Heavy‑Duty Designs for African Conditions
• Precision‑Machined Gears & Bearings
• Heat‑Treated Components for Long Life
• Complete Units or Individual Parts
• Expert Technical Support & Fast Sourcing

We understand the operational demands of African worksites and supply components built to withstand dust, heat, heavy loads, and extended service intervals.

Differential Comparison Guide

Maintenance & Buying Tips

• Match differential ratios exactly to your machine model
• Check axle configuration (front/rear, planetary, locking)
• Inspect seals and bearings regularly
• Use OEM‑specified oils and change intervals
• Address abnormal noise or vibration early
• Consider complete assemblies for faster turnaround

Frequently Asked Questions (FAQ)

How do I know which differential my machine uses?

Provide your machine make, model, and serial number. Our team will identify the correct differential or axle assembly.

Do you supply complete differential units?

Yes. We supply complete differentials, axle assemblies, and internal components such as gears, bearings, housings, and seals.

Are aftermarket differentials reliable?

Premium aftermarket differentials meet or exceed OEM specifications and offer excellent durability at reduced cost.

Can you supply differentials for older machines?

Absolutely. We source parts for legacy and discontinued models where OEM availability is limited.

Do you offer nationwide supply?

Yes. TOSOG supplies differentials across South Africa with support for regional and cross‑border African projects.