Heavy-Duty Mixer Reducer, PMP 6.5r120cp Concrete Mixer Gearbox

• Customization: Available
• Application: Machinery
• Hardness: Hardened Tooth Surface
• Model NO.: 6.5r120CP
• Installation: Horizontal Type
• Layout: Coaxial
• Gear Shape: Cylindrical Gear
• Step: Double-Step
• Type: Planetary Gear Reducer
• Transport Package: Wooden Box
• Specification: 56*56*68
• Trademark: Bodeke
• Origin: China
• HS Code: 8483402000
• Production Capacity: 300/Month

Product Description

Technical Description of Concrete Mixer Truck Reducer PMP 6.5r120CP

 

Introduction
The PMP 6.5r120CP Concrete Mixer Truck Reducer is a premium mechanical solution engineered for heavy-duty concrete mixing applications. As a flagship model from PMP (Pomarol Macchine Pezzate), a globally recognized leader in planetary gearbox technology, this reducer combines innovative design, robust durability, and precision performance to meet the rigorous demands of modern construction fleets. The "CP" designation denotes enhanced capabilities for challenging environments, making it ideal for concrete mixer trucks operating in harsh conditions, such as high-temperature zones, heavy-duty construction sites, or regions with frequent vibrations and shocks.

Core Design and Structural Components

At the heart of the PMP 6.5r120CP lies its planetary gearbox architecture, a hallmark of PMP's engineering excellence. This design features:

 

1. Sun Gear: A high-strength central gear machined from premium alloy steel, designed to transmit rotational power efficiently to the planetary gears.
2. Planetary Gears (3-Piece Set): Strategically positioned around the sun gear to distribute mechanical loads evenly, reducing stress on individual components and minimizing wear.
3. Ring Gear: A heat-treated inner ring gear that meshes with the planetary gears to achieve the desired speed reduction ratio, ensuring smooth and consistent power transmission.
4. Carrier Assembly: A robust housing that holds the planetary gears and transfers motion to the output shaft, engineered for maximum rigidity and minimal deflection under load.

 

This configuration forms a PMP planetary gear reducer that delivers superior torque density and compactness compared to traditional parallel-shaft designs. The housing is constructed from FG250 cast iron, heat-treated to withstand extreme pressures (up to 1,500 Nm peak torque) and resist corrosion from concrete slurry, moisture, and industrial debris.

Technical Specifications

Parameter	PMP 6.5r120CP Details
Type	Planetary Gear Reducer (Heavy-Duty CP Variant)
Application	Concrete Mixer Trucks, Industrial Mixing Equipment
Input Speed	Up to 2,800 RPM (20% higher than standard models)
Reduction Ratio	6.5:1 (Fixed ratio for optimal mixing speed)
Torque Capacity	Continuous: 1,200 Nm / Peak: 1,800 Nm
Efficiency	97% (Industry-leading for planetary gearboxes)
Lubrication	Forced Oil Circulation with Dual Cooling Fins
Mounting Type	Flange-Mounted (ISO 9409-1 Standard)
Weight	92 kg (Reinforced housing for added stability)
Operating Temperature	-30°C to +100°C (-22°F to 212°F)
IP Rating	IP67 (Fully dust-tight and protected against water immersion)

 

The gearbox incorporates helical gear teeth with a module of 4.5, designed to minimize noise (below 75 dB) and vibration while enhancing load-carrying capacity. The speed reducer function maintains the mixer drum at a precise rotational speed (3-18 RPM), critical for preventing concrete segregation and ensuring uniform consistency during transport.

Performance Enhancements (CP Variant Features)

The "CP" designation highlights key upgrades over standard models, tailored for extreme operational conditions:

1. Corrosion-Resistant Coatings

• Nickel-Phosphorus Plating: Applied to all gear surfaces to protect against chemical corrosion from concrete additives (e.g., accelerators, retarders).
• Epoxy Paint Finish: The housing features a dual-layer epoxy coating, resisting abrasion from gravel, sand, and other abrasive materials in mixer environments.

2. Upgraded Cooling System

• Dual Cooling Fins: Integrated into the housing to increase surface area for heat dissipation, reducing oil temperature by 15-20°C during prolonged use.
• High-Temperature Seals: Silicone-based seals withstand continuous operation at +100°C, preventing oil leaks and maintaining lubrication integrity.

3. Heavy-Duty Bearings

• Tapered Roller Bearings: Installed on both input and output shafts to handle axial and radial loads, ideal for mixer trucks navigating rough terrain.
• Lifetime Lubrication: Sealed bearings reduce maintenance needs, with a rated service life of 15,000+ hours under normal operating conditions.

Applications and Industry Utility

The PMP 6.5r120CP is trusted by construction professionals worldwide for:

 

• Large-Scale Infrastructure Projects: Bridges, dams, and highways requiring high-volume concrete delivery.
• Mining and Quarry Operations: Mixer trucks operating in dusty, high-vibration environments.
• Tropical and Desert Climates: Where extreme temperatures and humidity demand robust thermal management.
• Urban Construction: Compact mixer trucks navigating tight spaces with frequent start-stop operations.

 

Its compatibility with major truck brands (e.g., Mercedes-Benz, Scania, Sinotruk) and drum sizes (4-12 m³) makes it a versatile choice for global fleets. The reducer's compliance with EU Machinery Directive 2006/42/EC and ISO 14001 environmental standards ensures seamless integration into sustainable construction practices.

Maintenance and Serviceability

To optimize the lifespan of the PMP 6.5r120CP gear reducer, follow these maintenance guidelines:

 

1. Oil Maintenance
   • Type: Use synthetic gear oil with a viscosity of SAE 85W-140 (API GL-5).
   • Change Interval: Every 1,500 hours or annually (whichever occurs first).
   • Filtration: Install a magnetic oil filter to capture metal debris and extend oil life.
2. Operational Checks
   • Temperature Monitoring: Use an infrared thermometer to ensure housing temperature does not exceed +90°C during operation.
   • Vibration Analysis: Regularly inspect for unusual vibrations, which may indicate misalignment or gear wear.
3. Professional Servicing
   • Schedule biennial inspections by PMP-certified technicians to:
     • Measure gear backlash and tooth wear.
     • Replace seals and gaskets in high-wear areas.
     • Calibrate the lubrication system for optimal performance.

 

PMP offers a 3-year warranty on all components, along with 24/7 technical support and a global network of service centers for rapid repairs and replacements.

Advantages Over Competitors

1. Superior Torque-to-Size Ratio

The PMP 6.5r120CP delivers 20% more torque than comparable reducers in its class, making it ideal for heavy-load applications without compromising on compactness.

2. Energy Efficiency

The planetary design reduces power loss by up to 30% compared to traditional worm gear reducers, translating to lower fuel consumption and operational costs.

3. Reliability in Extreme Conditions

Unlike standard reducers, the CP variant's reinforced housing and corrosion-resistant features ensure consistent performance in salt-laden environments, high-altitude regions, and heavy-duty industrial sites.

4. Ease of Integration

With standardized mounting dimensions and a plug-and-play design, the reducer can be installed within 2 hours, minimizing downtime for fleet upgrades.

Why PMP Leads in Planetary Gearbox Technology

PMP's legacy in gear engineering spans over 60 years, with a focus on innovation and customer-centric solutions. The 6.5r120CP embodies this philosophy through:

 

• Advanced Simulation Tools: Finite Element Analysis (FEA) optimizes gear tooth profiles and housing strength for real-world loads.
• Sustainability Initiatives: 95% of production waste is recycled, and energy-efficient manufacturing processes reduce CO emissions by 25%.
• Customer Collaboration: Customizable variants (e.g., different reduction ratios, mounting styles) are available to meet specific fleet requirements.

Conclusion

The PMP 6.5r120CP Concrete Mixer Truck Reducer sets a new standard for durability, efficiency, and adaptability in heavy-duty mixing applications. Its planetary gearbox design, combined with CP-series enhancements, makes it the ultimate choice for fleets operating in challenging environments. By prioritizing reliability, ease of maintenance, and energy efficiency, PMP ensures that the 6.5r120CP not only meets but exceeds the demands of modern construction-delivering consistent performance, reduced downtime, and long-term value for operators worldwide.

 

Keywords integrated: Mixer Reducer, PMP Reducer, Gearbox, Gear Reducer, Speed Reducer, Planetary Gearbox, Concrete Reducer, PMP planetary gear reducer, PMP.

Model NO.	6.5R120CP	Model	6.5R120CP
Lead Time	5 Days	Transport Package	Standard Export Wooden Case
Colour	as Your Request	Usage	Concrete Mixer
Weight	330KG	Specification	56*56*68
Trademark	Bodeke	Origin	China
HS Code	8483402000	Production Capacity	100 Sets/Month

 
FAQ
Questions you maybe inquiry

Q1.What's the application for pump?
Construction equipment Steel factory or Power plant Industrial equipment Related hydraulic system

Q2.What about the MOQ?
MOQ:1~300 pcs.

Q3.Are you manufacturer?  And what's the delivery time?
Yes, we are manufacturer and have our own factory. Generally, its in stock for common models, 25-30 days will be finished and sent to customer in time.

Q4.If we don't find what we want on your website, what should we do?
A: You can email us the descriptions and pictures of the products you need, We will check whether we can make it.

Q5.How about the inspection and Guarantee of products?
We promise: all products are tested before ship, to confirm it will be working and  in good conditions when customers get. Also, we offer 12-month guarantee, if it doesn't work due to quality issue in the period, we will send spares to repair for free.

Q6. What about your after-sale service?
If there is any question in use, please talk with your sales manager at any time, so we will know your problems are and help to solve.

Bodeke Industrial Components Co., Ltd. is a leading Chinese company specializing in the manufacturing and maintenance of a wide range of industrial equipment components. Our products find application in diverse sectors, including cement tanker trucks, excavators, rescue equipment for cement trucks, mixers, cranes, hydraulic motors, hydraulic pumps, and other industrial machinery.

Empower your industrial machinery with Bodeke - a leading Chinese manufacturer specializing in the repair and production of a wide range of equipment components.From cement tanker trucks and excavators to mixer trucks,cranes,hydraulic motors,and pumps,our precision-engineered products redefine reliability and performance.Elevate your operations with Bodeke's quality components-your trusted partner in global industrial excellence.
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