Precision Planetary Gearbox Solutions for French TMR Mixers

The TMR planetary gearbox acts as the primary reduction stage between the tractor power takeoff and the mixing auger. Its planetary design is chosen for its superior ability to handle high torque density within a compact volume—a necessity for mounting beneath the tub of a vertical mixer.

• Умножение на въртящия момент: Utilizing a central sun gear, multiple planet gears, and an outer ring gear, the system distributes the load across several tooth contacts, allowing it to withstand the sudden “shock loads” when a large bale is dropped into the mixer.
• Vertical Thrust Support: Unlike industrial gearboxes, TMR units are equipped with oversized tapered roller bearings to support the weight of the auger plus the 10+ tons of feed pressing down on the output shaft.
• Rotational Stability: The planetary arrangement ensures perfectly centered rotation, preventing the “auger wobble” that can lead to uneven wear on the mixer walls.

Thermal Resilience

Integrated high-flow breathers and optimized internal oil pathways ensure that heat generated by friction is rapidly dissipated through the ductile iron housing, preventing oil oxidation even in continuous summer operation.

Contamination Barrier

French farms often utilize wet silage and acidic additives. Our gearboxes feature multi-stage “Cassette” seals that provide a physical labyrinth against mud, dust, and corrosive liquid silage juices.

Shock Load Absorption

We use a specialized nitriding process on the gear teeth to provide a hard, wear-resistant surface while maintaining a ductile core that can “flex” slightly under the impact of frozen fodder or foreign objects.

Case 1: The ‘Breton’ Endurance Challenge (France)

The Client: A large dairy cooperative in Ille-et-Vilaine, Brittany, operating 12 vertical mixers across multiple farms.

The Issue: Original gearboxes were failing every 14 months due to bearing burnout from the 24/7 feeding schedule.

The Kingstrans Solution: We supplied the Kingstrans Heavy-Duty TMR series with external oil cooling ports and synthetic high-temp lubricant.

Резултатът: Three years later, the gearboxes are still in operation with only routine oil changes. Maintenance costs dropped by 65%.

Case 2: Arctic Resistance in Quebec (Canada)

The Client: Livestock operation in Saguenay, where winter temps hit -35°C.

The Issue: Gearbox housings were cracking upon startup due to lubricant cavitation and thermal shock.

The Kingstrans Solution: We provided gearboxes with ductile iron QT500-7 housings and low-viscosity arctic-grade oil seals.

Резултатът: Zero structural failures recorded over two winters. The client reported smoother startups even in peak cold.

Case 3: Sandy Dust Protection in Alentejo (Portugal)

The Client: Feedlot operation in a dry, sandy region.

The Issue: Fine sand was bypassing seals, contaminating the gear oil, and grinding down the sun gear teeth.

The Kingstrans Solution: Implementation of our ‘Desert-Spec’ labyrinth seals and magnetic drain plugs to capture internal debris.

Резултатът: Gear oil purity tests showed a 90% reduction in particulate matter. Gearbox life expectancy doubled.

Case 4: High-Volume Mixing in Bavaria (Germany)

The Client: Large biogas plant using TMR mixers to process maize silage.

The Issue: Excessive heat buildup from continuous 24/7 operation leading to seal leakage.

The Kingstrans Solution: Custom planetary gearbox with integrated thermal dissipation fins and high-flow breathers.

Резултатът: Operating temperatures stabilized at 82°C (down from 105°C), significantly extending seal and oil life.

Q1: Can I use your gearbox to replace a Comer or Brevini unit on my Kuhn mixer?

A: Yes. We offer standard flange dimensions and input splines that match the T-series and PG-series gearboxes commonly found in Kuhn machines.

Q2: What kind of oil do you recommend for French winter conditions?

A: We recommend a high-quality 85W-140 EP (Extreme Pressure) oil. For regions like Jura, a full synthetic 75W-140 is preferable for easier cold-start circulation.

Q3: How often should I check the oil levels?

A: Oil levels should be inspected daily via the sight glass. A full oil change is recommended every 1,500 hours or once per year, whichever comes first.

Q4: Does the gearbox come with a warranty?

A: All Kingstrans agricultural gearboxes come with a standard 18-month warranty against manufacturing defects.

В5: Предварително ли са напълнени скоростните кутии с масло?

A: For safety and logistics reasons, they are shipped dry or with a rust-inhibitor coating. They must be filled to the correct level before operation.

Q6: How do you ensure the gears don’t break under shock loads?

A: We use case-hardening (carburizing) on 20CrMnTi steel. This creates a hard surface (HRC 60) for wear resistance and a tough core to absorb energy.

Q7: Do you offer two-speed gearboxes for TMR mixers?

A: Yes, we manufacture both single-speed planetary reducers and shifting two-speed boxes for easier startup of high-capacity mixers.

Q8: Can your gearbox handle vertical auger thrust?

A: Absolutely. Our TMR series is specifically designed with a reinforced housing and large tapered roller bearings specifically for vertical auger loads.

Q9: What is the lead time for shipping to France?

A: Standard models are usually in stock at our distribution hubs. Custom configurations typically take 4-6 weeks for manufacturing and transit.

Q10: Is technical support available for installation?

A: Yes, our engineering team provides full documentation, 3D CAD files for fitting, and remote technical consultation via email or video call.

Карданни валове

Wide-angle shafts with safety covers.

Хидравлични цилиндри

For discharge doors and mixer tilting.

Bevel Gears & Racks

Precision gears for auxiliary drives.

Worm Gearboxes

Ideal for conveyor systems and small drives.