Torque Converters for Heavy Equipment in South Africa

Heavy Equipment Torque Converters | CAT, Komatsu, ZF, Dana, Allison & More

TOSOG supplies torque converters for heavy equipment, earthmoving machinery, mining equipment, construction machinery, wheel loaders, bulldozers, dump trucks and industrial equipment throughout South Africa.

We supply new, aftermarket, OEM-equivalent, remanufactured and replacement torque converters for a wide range of heavy equipment applications. Our torque converters are selected according to the machine make, model, serial number, engine, transmission, torque converter specification and operating conditions.

Whether you need a CAT torque converter, Komatsu torque converter, ZF torque converter, Dana/Spicer torque converter, Allison torque converter or another heavy-duty torque converter, TOSOG can assist with sourcing and application matching.

Our torque converter solutions are suitable for demanding applications in mining, construction, quarrying, earthmoving, road construction, agriculture, industrial operations and plant hire.

What Is a Torque Converter?

A torque converter is a hydraulic drivetrain component positioned between the engine and transmission in many automatic and powershift systems.

Unlike a conventional mechanical clutch, a torque converter uses transmission fluid and rotating components to transfer engine power to the transmission. It allows the machine to move smoothly from standstill, multiply torque at low speeds and absorb drivetrain shock.

A typical torque converter may include:

Impeller / pump
Turbine
Stator
One-way stator clutch
Lock-up clutch, where applicable
Housing
Bearings
Seals
Internal transmission components

The torque converter must be correctly matched to the engine and transmission because characteristics such as stall speed, torque multiplication and operating conditions affect drivetrain performance.

Caterpillar also notes that torque converters should be matched to engine speed and horsepower and offers multiple converter configurations for off-highway applications.

Torque Converters for Heavy Equipment

TOSOG supplies torque converters for a wide range of yellow plant and heavy equipment.

Wheel Loader Torque Converters

We supply torque converters for:

Caterpillar wheel loaders
Komatsu wheel loaders
Volvo wheel loaders
SEM wheel loaders
Bell wheel loaders
Hyundai wheel loaders
Doosan wheel loaders
LiuGong wheel loaders
XCMG wheel loaders
SDLG wheel loaders
Kawasaki wheel loaders
Liebherr wheel loaders

Wheel loader torque converters are exposed to high loads, frequent directional changes and continuous loading cycles. Correct converter selection is essential for maintaining smooth power transfer and pushing performance.

Bulldozer Torque Converters

Applications include:

Caterpillar D-series dozers
Caterpillar D6
Caterpillar D7
Caterpillar D8
Caterpillar D9
Caterpillar D10
Caterpillar D11
Komatsu D65
Komatsu D85
Komatsu D155
Komatsu D275
Komatsu D355
Shantui bulldozers

Mining Equipment Torque Converters

TOSOG supplies torque converters for demanding mining applications including:

Mining loaders
Rigid dump trucks
Articulated dump trucks
Haul trucks
Underground mining equipment
Support equipment
Heavy-duty material handling machinery

Motor Grader Torque Converters

Torque converters are available for selected powershift motor graders including:

Caterpillar 120
Caterpillar 130
Caterpillar 140
Caterpillar 150
Caterpillar 160
Komatsu GD series
SEM motor graders
XCMG motor graders
John Deere graders

Articulated Dump Truck Torque Converters

Applications include:

Volvo A25
Volvo A30
Volvo A35
Volvo A40
Bell articulated dump trucks
Caterpillar articulated dump trucks
Komatsu articulated dump trucks
Terex articulated dump trucks

Popular Heavy Equipment Torque Converter Models

TOSOG can source torque converters for many machine models and transmission configurations.

Caterpillar / CAT Torque Converter Models

Popular CAT applications include:

CAT 924
CAT 930
CAT 936
CAT 938
CAT 950
CAT 950G
CAT 950H
CAT 950K
CAT 950M
CAT 962
CAT 962G
CAT 962H
CAT 966
CAT 966C
CAT 966D
CAT 966E
CAT 966F
CAT 966G
CAT 966H
CAT 966K
CAT 966L
CAT 972
CAT 980
CAT 980C
CAT 980F
CAT 980G
CAT 980H
CAT D6
CAT D7
CAT D8
CAT D9
CAT 120
CAT 140
CAT 160
CAT 725
CAT 730
CAT 735
CAT 740

Komatsu Torque Converter Models

Applications include:

Komatsu WA120
Komatsu WA250
Komatsu WA320
Komatsu WA380
Komatsu WA400
Komatsu WA420
Komatsu WA450
Komatsu WA470
Komatsu WA480
Komatsu WA500
Komatsu WA600
Komatsu WA700
Komatsu WA800
Komatsu WA900
Komatsu WA1200
Komatsu D65
Komatsu D85
Komatsu D155
Komatsu GD series
Komatsu HM series
Komatsu HD series

Volvo Torque Converter Applications

TOSOG can source torque converters for selected Volvo Construction Equipment applications including:

Volvo L-series wheel loaders
Volvo A-series articulated dump trucks
Volvo BM loaders
Volvo graders
Volvo heavy-duty construction equipment

Bell Equipment Torque Converter Applications

Applications include selected:

Bell B-series ADTs
Bell B25
Bell B30
Bell B35
Bell B40
Bell wheel loaders
Bell mining equipment

SEM Torque Converter Applications

TOSOG can source torque converters for selected SEM equipment including:

SEM 636
SEM 636B
SEM 656
SEM 656D
SEM 660
SEM 660D
SEM motor graders
SEM bulldozers

Other Heavy Equipment Applications

We also source torque converters for selected:

JCB
Hitachi
Doosan
Hyundai
Liebherr
Case
New Holland
John Deere
SANY
Shantui
XCMG
LiuGong
SDLG
Foton Lovol
Manitou
Terex
Zoomlion

Always provide the machine serial number and transmission information when requesting a torque converter to ensure correct identification.

Torque Converter Manufacturers & Brands

TOSOG can source torque converters from major OEMs and drivetrain manufacturers.

Caterpillar / CAT

CAT torque converters are widely used in heavy earthmoving and off-highway machinery. Caterpillar provides torque converter configurations matched to specific powertrain applications.

Komatsu

Komatsu torque converters are used across various wheel loaders, dozers, haulage and heavy construction equipment.

ZF

ZF supplies drivetrain and transmission technologies used across construction, agricultural, industrial and commercial equipment.

Dana / Spicer

Dana and Spicer drivetrain products are used in numerous off-highway and heavy-duty applications.

Allison Transmission

Allison is associated with fully automatic transmission systems used in heavy-duty vehicles and equipment.

Twin Disc

Twin Disc manufactures heavy-duty drivetrain and power transmission systems for industrial and other demanding applications.

Clark

Clark transmissions and torque converter systems are found in various industrial, construction and material-handling applications.

Other Manufacturers

TOSOG can also assist with sourcing solutions associated with:

Volvo
Bell Equipment
Eaton
Carraro
Voith
Kessler
Bosch Rexroth
Dana
Spicer
Allison
Twin Disc
Clark
Komatsu
Caterpillar
ZF

The South African heavy-equipment drivetrain market also includes specialist companies working with CAT, Dana, Twin Disc, ZF, Kessler and Voith converter and transmission systems.

New, Aftermarket & Remanufactured Torque Converters

TOSOG can assist customers looking for different replacement options depending on application, budget and availability.

New OEM Torque Converter

A new OEM unit is manufactured to the equipment manufacturer’s specifications and is generally selected where factory-standard replacement is required.

OEM-Equivalent Torque Converter

OEM-equivalent units are designed to meet the required application specifications while potentially providing a more cost-effective alternative.

Aftermarket Torque Converter

Aftermarket torque converters are available for many popular heavy equipment applications.

Remanufactured Torque Converter

Remanufactured torque converters may be suitable where customers require a cost-effective replacement while retaining a heavy-duty specification.

Replacement Torque Converter

Replacement units can be sourced for older, discontinued or difficult-to-find machinery subject to identification and availability.

Torque Converter Parts & Components

Depending on the application, TOSOG can also assist with torque converter components and related transmission parts.

These may include:

Torque converter assembly
Impeller
Turbine
Stator
Stator clutch
Lock-up clutch
Bearings
Seals
O-rings
Gaskets
Converter housing
Drive plates
Transmission pumps
Valve bodies
Clutch packs
Transmission gears
Shafts
Filters
Transmission overhaul kits

For complete transmission repairs, TOSOG also supplies earthmoving transmission assemblies and related drivetrain components.

Common Torque Converter Problems

A failing torque converter can cause symptoms that may initially appear to be a transmission or engine problem.

Common symptoms include:

1. Machine Has Poor Pushing Power

The machine may struggle under load or fail to deliver normal tractive effort.

2. Slipping

Engine speed may increase without a corresponding increase in machine speed.

3. Overheating

Excessive transmission temperature may indicate converter inefficiency, restricted cooling, incorrect fluid or internal damage.

4. Shuddering

Vibration or shudder during acceleration or converter lock-up can indicate an internal or hydraulic problem.

5. Delayed Engagement

The machine may take longer than normal to engage when selecting forward or reverse.

6. Abnormal Noise

Whining, grinding or unusual drivetrain noises can indicate internal wear.

7. Contaminated Transmission Oil

Metal particles or abnormal debris in the transmission oil may indicate internal component wear.

8. Reduced Machine Performance

Loss of productivity, slower acceleration or reduced hill-climbing capability may indicate a drivetrain issue.

Important: These symptoms can also originate from the transmission, hydraulic system, engine, electrical controls, brakes or final drive. Proper diagnosis should be completed before replacing the torque converter.

How to Choose the Correct Heavy Equipment Torque Converter

Selecting the correct torque converter requires more than simply matching the machine brand.

Provide the following information when requesting a quotation:

Machine manufacturer
Machine model
Machine serial number
Engine model
Engine serial number, if available
Transmission model
Torque converter part number
OEM part number
Transmission serial number
Operating application
Machine working hours
Photographs of the existing unit
Nameplate photographs
Quantity required

The machine serial number is particularly important because specifications can change between production ranges and machine configurations.

Torque Converter Maintenance Tips

Proper maintenance can help extend the service life of the torque converter and transmission.

Tip 1: Use the Correct Transmission Oil

Always use transmission fluid specified for the particular machine and transmission.

Tip 2: Monitor Transmission Temperature

Excessive heat can accelerate deterioration of transmission components.

Tip 3: Replace Transmission Filters

Dirty or restricted filters can affect oil flow and transmission performance.

Tip 4: Inspect Transmission Oil

Check oil condition and look for abnormal contamination or metal particles.

Tip 5: Maintain the Cooling System

Keep transmission coolers and associated cooling systems clean and operational.

Tip 6: Avoid Overloading

Operating machinery outside its rated application can place excessive loads on the drivetrain.

Tip 7: Investigate Symptoms Early

Do not continue operating a machine with severe slipping, overheating or abnormal drivetrain noise.

Tip 8: Check the Complete Drivetrain

When a torque converter fails, inspect related transmission and drivetrain components to determine whether contamination or secondary damage has occurred.

Tip 9: Verify Stall Speed and Application

Do not assume that two torque converters that physically fit the same housing have identical operating characteristics.

Tip 10: Provide Complete Machine Information

Correct identification reduces the risk of supplying an incompatible converter.

Why Buy Torque Converters from TOSOG?

TOSOG supplies heavy equipment parts and yellow plant components to customers across South Africa.

Our torque converter sourcing service is designed for:

Mining companies
Construction companies
Earthmoving contractors
Plant hire companies
Quarries
Workshops
Equipment dealers
Fleet owners
Agricultural operations
Municipal contractors
Engineering companies
Heavy equipment repair specialists

TOSOG Advantages

Wide Equipment Coverage
We source torque converters for numerous OEMs and transmission manufacturers.

OEM & Aftermarket Options
Depending on availability and application, customers can consider OEM, OEM-equivalent, aftermarket or remanufactured solutions.

Application Matching
We use machine, transmission and part-number information to help identify the correct unit.

South African Supply
We supply customers throughout South Africa.

Parts-on-Demand Sourcing
If a specific torque converter is not immediately available, TOSOG can source the required unit according to the customer’s specifications.

Technical Parts Support
We can also source related transmission and drivetrain components.

Industries We Supply

TOSOG supplies torque converters for heavy equipment operating in:

Mining

Torque converters for mining loaders, haul trucks, dozers and support equipment.

Construction

Solutions for wheel loaders, graders, bulldozers, excavators and articulated dump trucks.

Earthmoving

Heavy-duty drivetrain components for earthmoving contractors and fleet operators.

Quarrying

Torque converters for machines working under high load and continuous-duty conditions.

Plant Hire

Replacement drivetrain components for equipment fleets where machine uptime is critical.

Agriculture

Selected torque converter applications for tractors and agricultural machinery.

Industrial Operations

Torque converters and drivetrain components for industrial and material-handling equipment.

Torque Converter Supplier South Africa

If you are searching for:

Torque converters for heavy equipment
Heavy equipment torque converter
Earthmoving torque converter
CAT torque converter
Caterpillar torque converter
Komatsu torque converter
ZF torque converter
Dana torque converter
Allison torque converter
Wheel loader torque converter
Dozer torque converter
Mining equipment torque converter
Powershift torque converter
Torque converter replacement
Torque converter assembly
Aftermarket torque converter
Remanufactured torque converter
Torque converter parts
Torque converter supplier South Africa
Earthmoving transmission parts
Heavy equipment transmission parts

TOSOG can assist with sourcing and supply.

Frequently Asked Questions – Torque Converters

What does a torque converter do?

A torque converter transfers engine power to the transmission through hydraulic fluid. It allows smooth machine engagement and can provide torque multiplication at low speeds.

What is the difference between a torque converter and a clutch?

A conventional clutch mechanically connects the engine and transmission. A torque converter transfers power hydraulically and allows controlled slip between the engine and transmission.

What machines use torque converters?

Torque converters are used in many automatic and powershift machines, including wheel loaders, dozers, graders, articulated dump trucks, mining equipment and other heavy machinery.

How do I know if my torque converter is faulty?

Common symptoms include slipping, overheating, poor acceleration, delayed engagement, shuddering, abnormal noise and reduced machine pushing power. These symptoms can have other causes, so proper diagnosis is recommended.

Can a torque converter be rebuilt?

Some torque converters can be rebuilt or remanufactured depending on the design, condition and availability of internal components.

Do you supply CAT torque converters?

Yes. TOSOG can source Caterpillar/CAT torque converters for various earthmoving, mining and heavy equipment applications.

Do you supply Komatsu torque converters?

Yes. TOSOG can source torque converters for selected Komatsu wheel loaders, dozers, haulage equipment and other machinery.

Do you supply ZF torque converters?

Yes. TOSOG can assist with sourcing ZF and other transmission-manufacturer torque converter applications.

Can you supply aftermarket torque converters?

Yes. Depending on the application, TOSOG can source aftermarket and OEM-equivalent torque converters.

Can you source a torque converter using only the machine model?

We recommend providing the machine serial number, transmission model and existing torque converter part number whenever possible. The same machine model can have different specifications.

Do you supply torque converter parts?

Yes. Depending on availability, we can source torque converter components as well as complete assemblies and related transmission parts.

Where does TOSOG supply torque converters?

TOSOG supplies customers throughout South Africa and can assist customers in mining, construction, earthmoving, plant hire and industrial sectors.

Request a Torque Converter Quote

Looking for a torque converter for heavy equipment?

Send TOSOG the following information:

Machine Make:
Machine Model:
Serial Number:
Engine:
Transmission:
Torque Converter Part Number:
Quantity:
Location:

You can also send photographs of the existing torque converter, identification plate, transmission plate and machine serial plate.

TOSOG will assist with identifying and sourcing the appropriate heavy equipment torque converter for your application.

TOSOG – Heavy Equipment Parts & Yellow Plant Solutions

Serving Mining, Construction, Earthmoving, Plant Hire & Industrial Customers Across South Africa

Contact TOSOG for Torque Converter Pricing, Availability & Sourcing