What is a planetary gearbox?
A planetary gearbox is an engineering marvel where the input shaft aligns perfectly with the output shaft, creating a seamless power transfer. It's engineered to deliver the highest torque density in the most compact form, revolutionizing power transmission.
The bicycle's acceleration hub serves as a phenomenal example of a planet-wheel mechanism: Ever pondered the immense power and capabilities packed into such a compact hub? In a three-speed hub, a single-stage planetary gear system works its magic, whereas a five-speed hub employs a sophisticated two-stage system. Each of these ingenious planetary gear systems operates in reduction, direct coupling, and acceleration modes.
Mathematically, the elegance of planetary gearboxes emerges with reduction ratios ranging from 3:1 to 10:1. Ratios below 3 cause the sun gear to overshadow the planet gears, while ratios above 10 render the sun wheel too diminutive, thereby impacting torque. These ratios are usually expressed in absolute integer values, reflecting their precision.
Though the original inventor of the planetary gearbox remains a mystery, it was Leonardo da Vinci who, in 1490, first described its functionality. For centuries, this invention has been a cornerstone of innovation and mechanical prowess.
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 champions parallel shaft modes and horizontal mounting, further amplified by a versatile component array. This innovation transforms reducer configurations, offering unparalleled adaptability and versatility.
- Expertly crafted with a sound-absorbable structure, an expansive surface area, and a large fan for exceptional temperature and noise control. Precision grinding of cylindrical and bevel gears ensures rock-solid stability and efficient power transmission like never before.
- Input Mode: Tailor your selection with motor-connected flange and shaft input options, perfectly aligned to meet your operational demands.
- Output Mode: Opt for a robust solid shaft with flat key, a dynamic hollow shaft with flat key, hollow shaft with shrink disk, hollow or solid shaft with involute splines, or a solid shaft with flange.
Mounting Mode: Our versatile design accommodates foot-mounted, flange-mounted, swing base-mounted, and torque-arm-mounted styles, ensuring comprehensive versatility and adaptability for any application.
- Our planetary gearbox series champions adaptability with sizes spanning from 3 to 26, stages ranging from 1 to 4, and ratios from 1.25 to 450. When integrated with the WR, S, and K series, the ratio capability is dramatically enhanced, significantly boosting performance.


Maanshan Huafei Machinery Trading Co., Ltd: A luminary of innovation in the machinery trade sector, committed to delivering unrivaled quality and exemplary service that sets the gold standard. As an industry leader, we excel in Concrete Mixer Wear Parts and Twin Shaft Concrete Mixer Wear Parts, featuring an extensive range that includes Central Mixing Shovels, ARM Assemblies, and more. Our comprehensive offerings are the perfect fusion of cutting-edge technology and profound industry expertise.
Explore our expertly curated products such as Liners, Wear Plates, Mixing Arms, Blades, Paddles, Scrapers, Tiles, and Side & Floor Linings. Each component is meticulously engineered to ensure peak performance and enduring durability.
We are your premier source for top-notch replacement parts for mixers from prestigious brands like 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 more, guaranteeing unparalleled quality and reliability.
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 send us an email with your details or utilize our user-friendly online ordering system for a smooth and effortless experience.
2. How do I pay?
A: Upon confirmation of our PI, we provide comprehensive guidance through the payment process, accepting both T/T and LC for your utmost convenience and flexibility.
3. Are you a manufacturer?
A: Indeed, we stand as a professional powerhouse in manufacturing machines and spare parts, passionately dedicated to delivering nothing short of exceptional quality and unwavering reliability.
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 primed to manifest your unique visions into reality, ensuring that your specific needs are meticulously met and executed with precision.
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 exceptional quality assurance processes. Each product is subjected to an exhaustive 100% self-inspection before it reaches packaging. This meticulous scrutiny guarantees that we consistently uphold the pinnacle of quality and craftsmanship you expect.
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 committed to offering unparalleled value to our cherished clients. Our pricing strategy is meticulously crafted to be flexible and responsive to the ever-evolving market conditions. We strive to deliver incredibly competitive and appealing pricing, with room for negotiation, ensuring we tailor the best possible solutions for your unique requirements and aspirations.