Bonfiglioli 309 Series Planetary Gear Reducer

The best replacement of Bonfiglioli 309 gearbox.

This Planetary Gearboxe is for Twin Shaft Concrete Mixers of 1to 2cbm.

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R309 Series Planetary Gear Reducer

Technical Specifications

Bonfiglioli 309 Series Planetary Gear Reducer – Technical Specifications

(Typical parameters for concrete mixer application, e.g., 309R2 / 309L3)

Parameter

Metric Value

Imperial Value (if applicable)

Model Series

309 (300M Series)

-

Max. Output Torque

16,000 Nm

141,600 lb-in

Nominal Output Torque

11,300–12,800 Nm

100,000–113,300 lb-in

Speed Ratio Range

28 / 32.6 (standard for mixer)

-

Max. Input Speed

2,500 rpm

-

Rated Input Power

30–45 kW

40–60 hp

Transmission Efficiency

96–98%

-

Thermal Capacity

~12–20 kW

~16–27 hp


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SNAKE Planetary Gearbox complies with EU standard

SNAKE produced gearbox by our own heat treatment furnace.All of our machines are from Germany to ensure the most tiny tolerance.

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Mechanical & Installation Features

Characteristics

  • Design Type: Modular planetary gear unit, right-angle (R-series) / in-line (L-series) configuration
  • Output Interface: Flange-mounted (for mixer main shaft connection), compatible with Sicoma MSO/MAO series mixers
  • Input Interface: IEC/NEMA motor adapter or solid input shaft (for hydraulic motor connection)
  • Output Shaft Options: Solid keyed shaft, splined shaft, or hollow shaft with shrink disc
  • Weight (Typical): ~130–150 kg (287–331 lb)
  • Lubrication: Oil bath lubrication, standard oil volume ~12–15 L
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Key Features

KEY ADVANTAGES:

  • High torque density & compact structure
  • Robust bearing system for heavy shock loads
  • Low maintenance & long service life
  • Modular design for easy customization

 

OPERATING TEMPERATURE:

  • -20°C to +80°C (-4°F to +176°F)

Item

Specification

Input Speed (n₁)

1,800 rpm

Output Speed (n₂)

7.5 rpm

Rated Input Power (Pₙ₁)

15 hp (11 kW)

Rated Output Torque (Tₙ₂)

115,100 lb-in (13,000 Nm)

Output Shaft Diameter

Ø120 H7 mm

Weight

295 lb (134 kg)


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Product parameters and related specifications

Product Certification

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SNAKE MACHINERY

SNAKE provide comprehensive solution for your batching plant.Our products have attractive appearance, longer service life, high precision and customized service.

SNAKE MACHINERY is a high-end special batching plant parts manufacturing enterprise. We have nearly 20 years experience of R&D and service with over 25 patents. Our products are highly praised by customers because of good precision and long service life.

Leading Batching Plant Parts manufacturer
Over 15 techniques and 13 quality controller
Germany CNC machining equipment with high precision
Export to over 56 countries and welcomed
8 years repair rate within 1% and free spare parts service
EU CE and ISO 9001 certificate

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With many years of experience and rich project knowledge.

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Tailored products and solutions based on customer needs.

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Timely technical support and after-sales service for customers worldwide.

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Product parameters and related specifications

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sales@batchingplantpart.com
8613001717819
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Over the past 20 years, SNAKE has expanded into multiple areas

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