Swing Drive (Without Motor) for Prosung Excavators

Heavy-Duty Swing Drives – Reliable Rotation Without the Motor

At TOSOG, we specialise in supplying high-quality Swing Drives (without motor) engineered to restore smooth, precise, and controlled upper-structure rotation on Prosung excavators and tracked earthmoving machines operating in high-load, high-duty, and extreme working environments. Our swing drives – also known as swing gearboxes, swing reduction drives, slewing drives, rotation gear assemblies, or swing transmission units – are manufactured to meet or exceed OEM specifications, ensuring long service life, mechanical reliability, and consistent performance in demanding applications.

Each Prosung swing drive (without motor) is designed for direct replacement, making it an ideal solution for excavator repairs, swing system rebuilds, fleet maintenance programs, and cost-effective component replacement where the hydraulic swing motor remains fully operational. By reusing the existing motor, operators significantly reduce repair costs, shorten downtime, and extend the overall lifespan of the machine’s swing system.

TOSOG swing drives are built to handle:

• High torque loads

• Continuous slewing and rotation cycles

• Shock loading and impact forces

• Harsh operating conditions including dust, mud, heat, vibration, and heavy-duty work cycles

These units are widely used across:

• Open-cast and underground mining

• Construction and infrastructure development

• Quarrying and aggregate production

• Plant hire and rental fleets

• Civil engineering and earthworks

• Demolition and material handling

• Bulk earthmoving and mass excavation

Whether you operate crawler excavators, mining excavators, tracked machines, or heavy construction equipment, TOSOG provides reliable OEM, OEM-equivalent aftermarket, and tested used swing drive solutions compatible with a broad range of Prosung excavator models – from mid-range machines to ultra-class production units.

Our swing drives deliver:

• Optimised gear reduction ratios

• Smooth rotation with minimal backlash

• High-strength planetary gear sets

• Heavy-duty bearings and hardened gears

• Robust housings for long-term durability

By partnering with TOSOG, mining contractors, construction companies, plant hire businesses, workshops, and maintenance teams gain access to trusted swing drive components that minimise machine downtime, reduce maintenance costs, and maximise excavator productivity-keeping your equipment working efficiently where it matters most.

What Is a Swing Drive (Without Motor)?

A Swing Drive (without motor)—also known as a swing gearbox or swing reduction unit—is the mechanical assembly that transfers rotational power from the swing motor to rotate the excavator’s upper structure (house).

It typically includes:

• Planetary gears

• Bearings

• Seals

• Housing

• Output pinion or ring gear interface

This unit does not include the hydraulic motor, making it a cost-effective solution when the motor is still in good working condition.

Key Benefits of TOSOG Swing Drives (Without Motor)

✔ OEM-Equivalent or Better Quality
Manufactured to strict tolerances for reliability and long service life.

✔ Cost-Effective Replacement
Reuse your existing swing motor and save significantly on repair costs.

✔ High Load Capacity
Designed to withstand shock loads, continuous rotation, and harsh jobsite conditions.

✔ Precision Gear Reduction
Ensures smooth, controlled swing movement with reduced backlash.

✔ Wide Brand Compatibility
Available for major excavator brands including Prosung.

✔ Reduced Downtime
Direct-fit units for fast installation and minimal machine stoppage.

Applications

Our swing drives (without motor) are suitable for:

• Excavators (small, medium, and large)

• Mining shovels

• Material handlers

• Demolition machines

• Heavy construction equipment

Common industries served:

• Mining

• Construction

• Civil engineering

• Quarrying

• Plant hire

• Infrastructure development

Compatible Prosung Machines

TOSOG supplies swing drives compatible with a wide range of Prosung excavator models, including:

• Mini excavators

• 20–30 ton excavators

• 35–50 ton excavators

• Ultra-class mining excavators

📌 Contact us with your model or part number for exact compatibility.

New, Used & Reconditioned Options

We offer flexible options to suit your budget and urgency:

• New swing drives (without motor)

• Used swing drives (tested and inspected)

• Reconditioned swing drives (available on request)

Each unit is carefully assessed to ensure performance and reliability.

Why Buy Swing Drives from TOSOG?

• Extensive sourcing network across South Africa and globally

• Fast turnaround and nationwide delivery

• Technical support for part matching

• Competitive pricing on OEM and aftermarket parts

• Trusted supplier to contractors, fleet owners, and workshops

Installation & Maintenance Tips

Installation Tips

• Always inspect the existing swing motor for shaft wear or damage

• Replace seals and O-rings during installation

• Use manufacturer-recommended torque values

• Flush hydraulic lines if contamination is suspected

Maintenance Tips

• Check swing gearbox oil levels regularly

• Replace oil at recommended service intervals

• Monitor for unusual noise, backlash, or vibration

• Address leaks immediately to prevent gear damage