Introduction to the 309 Series Planetary Gearbox

The Hzpt 309 series planetary gearbox is a high-quality replacement for Bonfiglioli models. It offers consistency in design and installation dimensions, and can flawlessly replace your malfunctioning or discarded gearbox.

309 Series Planetary Gearbox

Key Features of the 309 Series Planetary Gearbox

The 309 series boasts a range of unique features, setting it apart from its competitors:

  • High-duty modular construction.
  • Brand high-performance tapered roller bearing that absorbs the forces exerted by the swing gear.
  • Built-in multi-chip friction brake.
  • Low-noise operation with a long service life and high efficiency.

Operating Conditions for the 309 Series Planetary Gearbox

309 Series Planetary Gearbox

The gearboxes are designed for use in ambient temperatures from -20° to + 40°. Environmental factors such as salt water, salty air, sand, dust, overpressure, heavy vibrations, extreme shocks and ambient temperature, aggressive media, and the like can impact the product’s function. It’s crucial to report such conditions to the factory for a safe design of the winch drive.

Design Specifications of the 309 Series Planetary Gearbox

The gearbox design is based on years of practical application experience. The maximum output torques T2max indicated under technical data for crane applications relate to FEM Section 1, 3rd Edition and Section IX (FEM — Federation Europeenne de la Manutention), as well as DIN 15020, collective load class L2, service time category T5 corresponding to driver group M5.

The reference output speed is 25 revolutions per minute maximum. If the swing drive is classified in another driver group, the required output torque must be converted by applying a factor.

Specifications of Planetary Gearbox

Below is a detailed table that outlines the specific characteristics of various models within the 309 series.

Manufacturing Process

Our manufacturing process includes four main steps:

  1. Housing processing process: marking → milling the bottom surface to ensure the center height → rough and fine tedious each hole → drilling → inspection and warehousing.
  2. Gear processing process: blanking → rough turning → normalizing → fine turning → gear hobbing → keyway → carburization and quenching → plane grinding → inner hole grinding → gear grinding → inspection and warehousing.
  3. Shaft processing process: blanking → rough turning → tempering → fine turning → keyway insertion → cylindrical grinding → inspection and warehousing.
  4. Inspection equipment: CMM, measuring machine, hole processing accuracy, geometric tolerance, coarseness level 6 remarks.

Explore and Purchase Our 309 Series Planetary Gearbox

We invite you to explore the exceptional capabilities of the 309 series planetary gearbox. We are confident that our product’s quality, durability, and performance will exceed your expectations. Don’t wait any longer. Upgrade your machinery with our 309 series planetary gearbox today!


Q1: How does the 309 series planetary gearbox compare to Bonfiglioli models?

Q2: What are the unique features of the 309 series planetary gearbox?

Q3: What are the operating conditions for the 309 series planetary gearbox?

Q4: What are the design specifications of the 309 series planetary gearbox?

Q5: How is the 309 series planetary gearbox manufactured?