What is a planetary gearbox?
A planetary gearbox is an ingeniously designed system where both the input and output shafts share alignment, enabling the most compact form to transfer immense torque, a characteristic known as torque density.
The acceleration hub of a bicycle exemplifies the planet-wheel mechanism beautifully. Ever marveled at the sheer power and functionality packed into such a small hub? A three-speed hub employs a one-stage planetary gear system, while a five-speed hub upgrades to a 2-stage system, each featuring reduction, direct coupling, and acceleration modes.
From a mathematical perspective, the reduction ratio ranges from a minimum of 3:1 to a maximum of 10:1. Ratios below 3 lead to disproportionately large sun gears relative to planet gears, while ratios exceeding 10 result in a small sun wheel and decreased torque. Generally, these ratios are expressed as absolute integers.
The origins of the planetary gearbox remain a mystery, yet it was first conceptually described by Leonardo da Vinci in 1490 and has served humanity faithfully for centuries.
Model |
2105 |
2205 |
2207 |
2209 |
2210 |
2211 |
2255D |
311R |
Power |
18.5 |
30 |
18.5/22 |
30 |
37 |
55 |
55 |
55 |
(KW) |
Input Speed |
615 |
818 |
635/635 |
635 |
756 |
756 |
652 |
652 |
(rpm) |
Speed Ratio |
21.95 |
29.2 |
23.54/23.54 |
23.54 |
27 |
27 |
23.3 |
27 |
Output Torque |
6310 |
10232 |
6550/7780 |
10600 |
12620 |
18760 |
18760 |
18760 |
(N.M) |
Max. Torque |
11400 |
18500 |
11000/13000 |
18000 |
22700 |
33800 |
33800 |
40000 |
(N.M) |
Weight |
141 |
180 |
138 |
132 |
205 |
220 |
303 |
352 |
(KG) |
Application |
1~1.25mm |
1.5mm |
1mm |
1.5mm |
2~2.5mm |
3mm |
3~3.5mm |
3~4.5mm |
- Our housing design supports parallel shaft modes with horizontal mounting, combined with a versatile array of components to expand the reducer’s configurations, offering flexibility and adaptability like never before.
- Meticulously designed with a sound-absorbing structure, an expansive surface area, and a large fan to offer supreme temperature and noise regulation. The precision grinding of cylindrical and bevel gears ensures consistent stability and efficient power transmission.
- Input Mode: Tailor your operations with options ranging from motor-connected flange input to shaft input, catering to diverse operational demands.
- Output Mode: Select from innovative options including a solid shaft with a flat key, a hollow shaft with a flat key, a hollow shaft with a shrink disk, hollow or solid shafts with involute splines, or a solid shaft with a flange.
Mounting Mode: Our product offers versatility with styles like foot-mounted, flange-mounted, swing base-mounted, and torque-arm-mounted designs, adapting seamlessly to varied applications.
- The planetary gearbox series boasts flexibility with sizes ranging from 3 to 26, stages spanning from 1 to 4, and ratios stretching from 1.25 to 450. When combined with the WR, S, and K series, the achievable ratios amplify significantly, delivering unmatched performance.


Maanshan Huafei Machinery Trading Co., Ltd: A luminary in the machinery trade, steadfast in delivering unparalleled quality and outstanding service, illuminating the path of innovation. As an industry leader, we pride ourselves in Concrete Mixer Wear Parts and Twin Shaft Concrete Mixer Wear Parts, presenting a comprehensive range that includes Central Mixing Shovels, ARM Assemblies, and more. Our offerings integrate state-of-the-art technology with profound industry expertise.
Explore our meticulously crafted products such as Liners, Wear Plates, Mixing Arms, Blades, Paddles, Scrapers, Tiles, and Side & Floor Linings. Each component is engineered for peak performance and enduring reliability.
We provide premium replacement parts for mixers from top-tier brands such as SICOMA, B.H.S, KYC, ZOOMLION, LILIAN, MARINI, AMMAN, TEKA, PARKER, STETTER, SIMEM, ORU, O-COUGHI, EUROTECH, ELBA, MEACONS, POLYTECH, MAXOMIX, AQUARIUS, WIGGERT, and many others, ensuring unmatched quality and dependability.
Packaging |
Size |
800(L) * 800(W) * 800 (H) |
Packed Wear Parts to Delivery |
Transport of Large Trucks to The Seaport |
Packaging Details |
The normal package is wooden box(Size: L*W*H). If container is too tight,we will use PE film for packing or pack it according to customers special request. |
1. How can I place an order?
A: Placing an order is incredibly straightforward; simply email your details or utilize our user-friendly online ordering system for a seamless and hassle-free experience.
2. How do I pay?
A: Once our Proforma Invoice (PI) is confirmed, we offer guidance through the payment process, accepting T/T and LC for your convenience and flexibility.
3. Are you a manufacturer?
A: Indeed, we are a distinguished professional manufacturer of machines and spare parts, passionately dedicated to delivering exceptional quality and reliability. Our commitment to excellence distinguishes us in the marketplace.
4. Do you accept special orders?
A: Absolutely! We enthusiastically embrace the opportunity to accommodate special orders. With our state-of-the-art design and manufacturing facilities, we are fully equipped and ready to bring your unique visions to life. We ensure that your specific needs are met with precision and artistry, manifesting bespoke solutions tailored to your desires.
5. Do you have any product inspection procedures?
A: Absolutely! At Maanshan Huafei Machinery Trading Co., Ltd, we are unwavering in our commitment to quality excellence through our extraordinary quality assurance processes. Every product undergoes a comprehensive 100% self-inspection before packaging. This meticulous scrutiny ensures that we consistently uphold the pinnacle of quality and craftsmanship, meeting the highest standards of excellence.
6. Can you provide details on the pricing? Is there any possibility for a discount?
A: At Maanshan Huafei Machinery Trading Co., Ltd, we are passionately devoted to offering unmatched value to our esteemed clients. Our pricing strategy is meticulously crafted to be adaptable and responsive to varying market conditions. We endeavor to provide impressively competitive and enticing pricing, with room for negotiation, ensuring we tailor the most advantageous solutions for your distinct requirements and aspirations.