Product Description

ADVANCE D300A – 4:1


Reference number A-D300A-4
Brand Advance
Model D300A
Ratio 4:1
Power 630 HP @ 1800 RPM
Max. Power 805 HP @ 2300 RPM
RPM Range 1000-2300
Rated propeller thrust 60 kn
N/n 0,35 hp/rpm


Sae housing Without/sae-0/sae-1
Controls Mechanical/ electrical
Pto Available
Note If using flexible couping, rate will rise 8%
Coupling size 18 /16 /14 inch
Coupling type Rubber block drive, with alu. ring/(high) flexible coupling


Vertical offset 355 mm
LxWxH 786x920x1040 mm
Net. weight 940 kg


Ratio 4,48:1 4:1 5,05:1 5,52:1 5,9:1 6,56:1 7,06:1 7,63:1
Rate 0,33 hp/rpm 0,35 hp/rpm 0,30 hp/rpm 0,25 hp/rpm 0,20 hp/rpm 0,17 hp/rpm

Main Data

Input speed 1000-2500r/min
Reduction ratio 4.00 Trans. capacity 0.257kw/r/min
4.48 0.243kw/r/min
5.05 0.221kw/r/min
5.52,5.90 0.184kw/r/min
6.56,7.06 0.147kw/r/min
7.63 0.125kw/r/min
Control way Push-and-pull flexible shaft, electrically, pneumatically
Rated thrust 60KN
Center distance 355mm
L×W×H 786×980×1041mm
Net weight 940kg
Flywheel 12V135,SAE18,16,14
Bell housing 12V135,SAE0,1


Our Service

Pre-Sales Service

* Inquiry and consulting support. 
* Sample testing support. 
* View our Factory.

After-Sales Service

* Training how to instal the machine, training how to use the machine. 
* Engineers available to service machinery overseas.


model ratio Rate
MARINE  GEARBOX  6 2.52  3.05  3.5 0.0044 1000~2100 350× 316× 482 58
MARINE  GEARBOX  16A 2.07  2.48  2.95  3.35  3.383 0.012 1000~2000 422× 325× 563 84
MARINE  GEARBOX  MD571 1.56  1.88  2.63 0.009~0.012 4000 281× 230× 221 15
MARINE  GEARBOX  MA100 1.6  2.0  2.55  3.11  3.59  3.88 0.006~0.009 1500~3000 236× 390× 420 75
MARINE  GEARBOX  MA125 2.03  2.46  3.04  3.57  4.05  4.39  4.7 0.011~0.02 1500~3000 291× 454× 485 115
MARINE  GEARBOX  MA142 1.97  2.52  3.03  3.54  3.95  4.5  5.06  5.47 0.013~0.03 1500~2500 308× 520× 140
MARINE  GEARBOX  40A 2.07  2.96  3.44 0.571~0.03 750~2000 414× 610× 620 225
MARINE  GEARBOX  MB170 1.97  2.52  3.03  3.54  3.96  4.50  5.06  5.47  5.88 0.571~0.039 1000~2500 485× 610× 656 240
MARINE  GEARBOX  HCU65 2.045  2.50  3.068  3.427 0.045 1000~2200 504× 600× 808 260
MARINE  GEARBOX  HC65 1.53  2.03  2.50  2.96 0.044~0.048 1000~2500 311× 460× 544 130
MARINE  GEARBOX  120B 2.03  2.81  3.73 0.044~0.088 750~1800 605× 744× 770 400
MARINE  GEARBOX  120C 1.48  1.94  2.45  2.96  3.35 0.08~0.1 1000~2500 352× 694× 650 225
MARINE  GEARBOX  MV100 1.23  1.62  2.07  2.52  2.87 0.08~0.1 1500~3000 390× 630× 580 220
MARINE  GEARBOX  HCV120 1.509  2.016  2.524 0.076~0.01 1500~2500 502× 600× 847 300
MARINE  GEARBOX  135 2.03  2.59  3.04  3.62  4.11  4.65  5.06  5.47  5.81 0.070~0.10 1000~2000 578× 744× 830 470
MARINE  GEARBOX  MB242 3.04  3.52  3.95  4.53  5.12  5.56  5.88 0.074~0.013 1000~2500 442× 744× 763 385
MARINE  GEARBOX  HC138 2.52  3.0  3.57  4.05  4.45 0.11 1000~2500 520× 792× 760 360
MARINE  GEARBOX  HC200 1.48  2.0  2.28 0.147 1000~2200 430× 744× 708 280
MARINE  GEARBOX  MB270A 4.05  4.53  5.12  5.50  5.95  6.39  6.82 0.088~0.147 1000~2500 594× 810× 868 675
MARINE  GEARBOX  HCV230 1.485  1.956  2.483 0.146~0.184 1000~2200 568× 620× 1571 450
MARINE  GEARBOX  HCQ300 1.06  1.46  2.05  2.38 0.235~0.250 1000~2300 533× 681× 676 360
MARINE  GEARBOX  300 2.04  2.54  3.0  3.53  4.1  4.61  4.94  5.44 0.125~0.257 1000~2300 638× 870× 864 740
MARINE  GEARBOX  D300 4.0  4.48  5.05  5.52  5.90  6.56  7.06  7.63 0.125~0.257 1000~2300 638× 920× 1040 880
MARINE  GEARBOX  T300 6.03  6.65  7.04  7.54  8.02 0.221~0.243 1000~2300 640× 920× 1110 1120
MARINE  GEARBOX  HCV400 1.388  2.0 0.274~0.30 1000~1800 780× 740× 1192 650
MARINE  GEARBOX  HC400 2.04  2.50  3.0  3.42  4.06 0.279~0.331 1000~1800 641× 890× 890 820
MARINE  GEARBOX  HCD400A 3.96  4.33  4.43  4.70  5.0  5.53  5.89 0.272~0.331 1000~1800 641× 950× 988 1100
MARINE  GEARBOX  HCT400A 6.096  6.49  6.93  7.42  7.95  8.40  9.0  9.47 0.243~0.331 1000~2100 784× 992× 1130 1450
MARINE  GEARBOX  HCT400A~1 8.15  8.69  9.27  9.94  10.60  11.46  12 0.262~0.331 1000~2100 869× 1100× 1275 1500
MARINE  GEARBOX  HC600A 2.0  2.48  3.0  3.58  3.89 0.40~0.48 1000~2100 745× 1094× 1126 1300
MARINE  GEARBOX  HCD600A 4.18  4.43  4.70  5.0  5.44  5.71 0.40~0.48 1000~2100 745× 1094× 1271 1550
MARINE  GEARBOX  HCT600A 6.06  6.49  6.97  7.51  8.04  8.66  9.35 0.28~0.44 1000~2100 805× 1094× 1271 1600
MARINE  GEARBOX  HCT600A~1 8.23  8.82  9.47  10.8  11.65  12.57 0.331~0.441 1000~2100 878× 1224× 1346 1700
MARINE  GEARBOX  750B 1.49  1.97  2.48  2.92 0.55 600~1200 1117× 850× 1170 1600
MARINE  GEARBOX  CHT800 5.57  5.68  5.93  6.43  6.86  7.33  7.84 0.515~0.625 800~1800 1056× 1280× 1425 2000
MARINE  GEARBOX  900 1.46  2.04  2.47  3.0  3.60  4.08  4.63  4.95 0.40~0.66 600~1600 1115× 850× 1310 1600

The delivery moment
We have closely related transportation companies, engineering logistics, containers, air freight, international railways. International ground transportation.
There are many ways to choose, and the shipping cost is even lower. Timeliness is higher.

Our Company

ZheJiang CZPT Power Technology Co., Ltd. is located in HangZhou City, ZheJiang Province. The KangMS POWER brand of the company has become a CZPT brand that has successfully operated in the field of power generation equipment.

Unified R & D and dedicated production

The R & D team at the ZheJiang headquarters formulates unified technical specifications and production processes based on advanced technology and innovative concepts. The production plant in HangZhou, China, through strict international management systems and standard production processes, manufactures high-quality KangMS POWER power generation equipment .

Unified research and development of high-quality production

The R & D and production team at ZheJiang headquarters, power generation equipment and related ancillary products are tailored to the needs of our customers with the purpose of durability and high reliability. Related products have been well received by customers at home and abroad.

Global sales and service network
ZheJiang CZPT Power Technology Co., Ltd. has always focused on providing Kans Ms POWER power system quality products and services to customers at home and abroad. The excellent performance of ZheJiang CZPT Power Technology Co., Ltd. can be seen in industries and projects such as highways, railways, post and telecommunications, water conservancy, airports, factories and mines, and high-rise buildings.

The company has increased its efforts to extend the industry horizontally and vertically. Not only has it vigorously developed “gas generator sets and system engineering, heavy oil power station construction, marine diesel generator sets, ship mainframes and oil supply systems”, and has provided fuel and gas power generation system technology and The full-service of the equipment also focuses on the field of new energy. In the research, development and application of new energy and high-efficiency energy-saving technologies and products, it has created new and characteristic industries, covering the efficient use of solar energy and the integration of biomass energy. Utilization and biogas projects, industrial waste gas, waste heat recovery and utilization, biogas, natural gas, coal bed gas, oilfield associated gas generation and other industrial development of power generation and engineering applications.

The company adapts to the new situation, comprehensively enhances the comprehensive competitiveness of the enterprise, and consistently implements and implements the whole process and all-round of enterprise management, and puts people-oriented, harmonious concepts and modern enterprise management systems in order to standardize and improve the internal management of enterprises. With the development needs of the enterprise, a high-tech, large-scale and strong group company has continuously demonstrated its unique charm and style, and continues to win customers by quality, base itself on the market with credibility, reward society with value, and CZPT the future with strength. Go hand in hand with all sectors of society to create brilliant!


Application: Marine
Function: Change Drive Direction, Speed Changing, Speed Reduction
Layout: Cycloidal
Hardness: Hardened Tooth Surface
Installation: Horizontal Type
Step: Three-Step


Customized Request

helical gearbox

How to Calculate Transmission Ratio for a Cycloidal Gearbox

Using a cycloidal gearbox can be very useful in a wide variety of situations. However, it’s important to understand how to use it properly before implementing it. This article discusses the benefits of using a cycloidal gearbox, how to calculate the transmission ratio, and how to determine the effects of dynamic and inertial forces on the gearbox.

Dynamic and inertial effects

Various studies have been done to study the dynamic and inertial effects of cycloidal gearboxes. These studies have been performed using numerical, analytical and experimental methods. Depending on the nature of the load and its distribution along the gear, a variety of models have been developed. These models use finite element method to determine accurate contact stresses. Some of these models have been developed to address the nonlinear elasticity of contacts.
Inertial imbalance in a cycloidal gearbox causes vibration and can affect the efficiency of the device. This can increase mechanical losses and increase wear and tear. The efficiency of the device also depends on the torque applied to the cycloidal disk. The effectiveness of the device increases as the load increases. Similarly, the nonlinear contact dynamics are also associated with an increase in efficiency.
A new model of a cycloidal reducer has been developed to predict the effects of several operational conditions. The model is based on rigid body dynamics and uses a non-linear stiffness coefficient. The model has been validated through numerical and analytical methods. The model offers drastic reduction in computational costs. The model allows for a quick analysis of several operational conditions.
The main contribution of the paper is the investigation of the load distribution on the cycloidal disc. The study of this aspect is important because it allows for an analysis of the rotating parts and stresses. It also provides an indication of which gear profiles are best suited for optimizing torque transmission. The study has been conducted with a variety of cycloidal gearboxes and is useful in determining the performance of different types of cycloidal gearboxes.
To study the load distribution on the cycloidal disc, the authors investigated the relationship between contact force, cycloidal gearboxes and different gear profiles. They found that the non-linear contact dynamics have a large impact on the efficiency of a cycloidal gearbox. The cycloidal gearbox is an ideal solution for applications that involve highly dynamic servos. It can also be used in machine tool applications and food processing industries.
The study found that there are three common design principles of cycloidal reducers. These are the contact force distribution, the speed reduction and the trochoidal profile of the cycloidal disc. The trochoidal profile has to be defined carefully to ensure correct mating of the rotating parts. The trochoidal profile provides an indication of which gear profiles are best for optimizing torque transmission. The contact force distribution can be improved by refining the mesh along the disc’s width.
As the input speed increases, the efficiency of the reducer increases. This is because contact forces are constantly changing in magnitude and orientation. A cycloidal reducer with a one tooth difference can reduce input speed by up to 87:1 in a single stage. It also has the ability to handle high-cycle moves without backlash.helical gearbox

Transmission ratio calculation

Getting the correct transmission ratio calculation for a cycloidal gearbox requires a good understanding of what a gearbox is, as well as the product that it is being used for. The correct ratio is calculated by dividing the output speed of the output gear by the input speed of the input gear. This is usually accomplished by using a stopwatch. In some cases, a catalog or product specification may be required. The correct ratio is determined by a combination of factors, such as the amount of torque applied to the mechanism, as well as the size of the gears involved.
A cycloidal gear is a type of gear tooth profile that can be represented using a spline. It is also possible to model a gear with a cycloidal profile by using a spline to connect points against the beginning of a coordinate system. This is important in the design and functionality of a gear.
There are many different gears used in machines and devices. These include the herringbone gear, the helical gear and the spiral bevel gear. The best transmission ratios are typically obtained with a cycloidal gearbox. In addition to ensuring the accuracy of positioning, a cycloidal gearbox provides excellent backlash. Cycloid gears have a high degree of mechanical efficiency, low friction, and minimal moment of inertia.
A cycloidal gearbox is often referred to as a planetary gearbox, though it is technically a single-stage gearbox. In addition to having a ring gear, the gearbox has an eccentric bearing that drives the cycloidal disc in an eccentric rotation. This makes the cycloidal gearbox a good choice for high gear ratios in compact designs.
The cycloid disc is the key element of a cycloidal gearbox. The cycloid disc has n=9 lobes, and each lobe of the disc moves by a lobe for every revolution of the drive shaft. The cycloid disc is then geared to a stationary ring gear. The cycloidal disc’s lobes act like teeth on the stationary ring gear.
There are many different gears that are classified by the profile of the gear teeth. The most common gears are the involute and helical gears. Most motion control gears include spur designs. However, there are many other types of gears that are used in various applications. The cycloidal gear is one of the more complicated gears to design. The cycloid disc’s outline can be represented using markers or smooth lines, though a scatter chart will also do.
The cycloid disc’s lobes rotate on a reference pitch circle of pins. These pins rotate 40 deg during the eccentric rotation of the drive shaft. The pins rotate around the disc to achieve a steady rotation of the output shaft.
The cycloid disc’s other obvious, and possibly more important, feature is the’magic’ number of pins. This is the number of pins that protrude through the face of the disc. The disc has holes that are larger than the pins. This allows the pins to protrude through the disc and attach to the output shaft.helical gearbox


Whether you’re building a robot drive or you’re simply looking for a gearbox to reduce the speed of your vehicle, a cycloidal gearbox is a great way to achieve a high reduction ratio. Cycloidal gearboxes are a low-friction, lightweight design that has an extremely stable transmission. They are suitable for industrial robots and can be used in many applications, including positioning robots.
Cycloidal gearboxes reduce speed by using eccentric motion. The eccentric motion enables the entire internal gear to rotate in wobbly cycloidal motion, which is then translated back into circular rotation. This eliminates the need for stacking gear stages. Cycloidal gearboxes also have less friction, higher strength, and greater durability than conventional gearboxes.
The cycloidal gearbox is also used in a number of applications, including marine propulsion systems, and robot drives. Cycloidal gearboxes reduce vibration by using offset gearing to cancel out vibrations.
Cycloidal gears have lower friction, higher strength, and better torsional stiffness than involute gears. They also have a reduced Hertzian contact stress, making them better than involute gears for use with shock loads. They also have a smaller size and weight than conventional gearboxes, and they have a higher reduction ratio than involute gears.
Cycloidal gears are typically used to reduce the speed of motors, but they also offer a number of other advantages. Cycloidal gearboxes have a smaller footprint than other gearboxes, allowing them to fit into confined spaces. They also have low backlash, allowing for precise movement. Cycloidal gears have a higher efficiency, resulting in lower power requirements and lower wear.
The cycloidal disc is one of the most important components of the gearbox. Cycloidal discs are normally designed with a short cycloid, which minimizes the eccentricity of the disc. They are also designed with a shortened flank, resulting in better strength and less stress concentration. Cycloidal discs are typically geared to a stationary ring gear. The cycloid is designed to roll around the stationary ring pins, which push against the circular holes in the disc. Cycloidal gearboxes typically employ two degrees of shift.
Cycloidal drives are ideal for heavy load applications. They also have high torsional stiffness, which makes them highly resistant to shock loads. Cycloidal drives also offer a high reduction ratio, which can be achieved without the need for a large input shaft. They are also compact and have a high service life.
The output shaft of a cycloidal gearbox always has two degrees of shifting, which ensures that the input and output shafts always rotate at a different speed. The output shaft would be a pin casing around the drive disks, which would also allow for easy maintenance.
Cycloidal gearboxes are also very compact and lightweight, so they are ideal for use in industrial robots. The cycloidal gearbox reducer is the most stable, low-vibration reducer in industrial robots, and it has a wide transmission ratio range.
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editor by CX 2023-05-11