Gearbox Spare Parts

CQ/GA Series Marine Gearbox

GQ/GA series gerbox

Chongchi GAST6358 gaerbox spare parts

Repuesto de caja reductora GQST9455


The GQ/GA series are high-performance, lightweight marine gearboxes designed for use in a variety of applications. These gearboxes are capable of handling mating power ranging from 200-1600KW, with input speeds of 750-2300rpm and a reduction ratio of 1.5-20.5. They are commonly used in fishing vessels, passenger ships, liquid cargo carriers, container ships, LPG ships, ro/ro ships, pushers, barges, and other vessels. The GQ/GA series gearboxes are suitable for both single-engine, two-engine, and three-engine propulsion systems.

Gear type:

GAS1023

GAS1527

GQS2636

GAST2636

GQS3426

GQS3436

GAST3438

GAST3447

GQS4832

GQS4842 (GQS2442)

GAST4842

GAST4850

GQS6345

GAST6345

GAST6358

GAST6367

GAST6374

GQS7434

GQS7445

GAST7450

GAS8534

GAST8455

GQS9438

GQS9445 (GQS2545)

GAST9455

GAST10355

GQS12539

GAST12559

GAST12763

CQ/GA Series Marine Gearbox Read More »

GCH Series Marine Reduction Gear

Chognchi GCH series gearbox

GCH710 marine reduction gear

Caja reductora Chongchi


GC series marine gearbox is a single-stage reduction gearbox with case-hardened and ground single helical gears. It includes two drive models – GCS and GCH. The GCS gearbox is designed with a vertical offset, while the GCH gearbox has horizontal offset shafts.

Gear type:

Gearbox type (Model)

GCH 450

GCH 500

GCH 560

GCH 600

GCH 630

GCH 665

GCH 710

GCH 750

GCH 800

GCH 850

GCH 900

GCH 950

GCS450

GCS500

GCS560

GCS600

GCS630

GCS665

GCS710

GCS750

GCS800

GCS850

GCS900

GCS950

GCS1000

GCH Series Marine Reduction Gear Read More »

GC Series Marine Gearbox

Chognchi GCS series gearbox

GCS500 marine reduction gear

Caja reductora Chongchi


GC series marine gearbox is a single-stage reduction gearbox with case-hardened and ground single helical gears. It includes two drive models – GCS and GCH. The GCS gearbox is designed with a vertical offset, while the GCH gearbox has horizontal offset shafts.

Gear type:

GC450

GC500

GC560

GC600

GC630

GC665

GC710

GC750

GC800

GC850

GC900

GC950

GC1000

GC Series Marine Gearbox Read More »

GV Series Marine Gearbox

CN GPOWER GEARBOX CO., LTD.

Chongchi Marine Gearbox

Fixed Propeller-Reversible Engines


The GV-series marine gearbox is designed with heavy rigidity of the integrated thrust bearing, ensuring safe and reliable connection of all torque-transmitting parts and control devices. The self-supporting gear housing provides security of connecting tooth mesh in all-load service, and the pinions are case-hardened and ground for maximum durability. The specifications of the GV-series gearboxes have been approved by the latest standard rules of classification societies, making them suitable for a wide range of marine applications.

Gear type:

GVA1000B

GVA1120B

GVA1250B

GVA1400B

GVA1500B

GVA1700B

GVA1875B

GVA2050B

GVA1000C

GVA1120C

GVA1250C

GVA1400C

GVA1500C

GVA1700C

GVA1875C

GVA2050C

GVW1050

GVW1225P1

GVW1250P1

GVW1400P1

GVWK1400P1

GVL1400P1

GV Series Marine Gearbox Read More »

GW Series Marine Gearbox

The GW series marine gearboxes are designed to have a compact structure and require minimum space for installation. Their torque transmission capacity varies depending on the gearbox size and reduction ratio, and can cover a speed range of 360 to 1800 rpm. The torque power speed (N/n1) capacity can range from 0.38 to 46.2 for reductions from 2 up to 6:1.

Model: GWC: Reverse reduction gear

GWL: Reduction gear with clutch

GWD: Reverse reduction gear

GWS: Reverse reduction gear

GWK: Reduction gear with clutch


Chongchi GWC series spare parts

GWC28.32

GWC30.32

GWC32.35

GWC36.39

GWC39.41

GWC42.45

WGC45.49

GWC49.54

GWC4957

GWC52.59

GWC5262

GWC60.66

GWC63.71

GWC66.75

GWC70.82

GWC70.85

GWC75.90

GWL: Reduction gear with clutch

GWL28.32

GWL30.32

GWL32.35

GWL36.39

GWL39.41

GWL42.45

WGL45.49

GWL49.54

GWL49.57

GWL52.59

GWL60.66

GWL63.71

GWL66.75

GWL70.82

GWL70.85

GWL75.90

GWD: Reverse reduction gear

GWS: Reverse reduction gear

GWK: Reduction gear with clutch

GWD28.30

GWK28.30

GWS28.30

GWH28.30

GWD30.32

GWK30.32

GWS30.32

GWH30.32

GWD32.35

GWK32.35

GWS32.35

GWH32.35

GWD36.39

GWK36.39

GWS36.39

GWH36.39

GWD42.45

GWK42.45

GWS42.45

GWH42.45

GWD45.49

GWK45.49

GWS45.49

GWH45.49

GWD49.54

GWK49.54

GWS49.54

GWH49.54

GWD52.59

GWK52.59

GWS52.59

GWH52.59

GWD60.66

GWK60.66

GWS60.66

GWD63.71

GWK63.71

GWS63.71

GWH63.71

GWD66.75

GWK66.75

GWS66.75

GWH66.75

GWM3235

GWM3639

GWM3941

GWM4954

GW Series Marine Gearbox Read More »

CN Gpower Gearbox

CN GPOWER GEARBOX CO., LTD.

Chongchi Marine Gearbox

Yongjin Elastic Damping Coupling


We have been an official dealer and distributor of CN Gpower Gearbox since 2005, dealing with all their series of products, including marine gearboxes, couplings, and dampers. The principal marine gearbox types we offer include the GW reversing clutch speed reduction gearbox, the GC speed reducing gearbox, and the GVA two-in-one-out gearbox, as well as elastic damping couplings, elastic dampers, and flexible shaft couplings.

As a reliable partner, we are committed to providing high-quality products and professional services to meet the diverse needs of our customers. Our experienced team is always ready to provide technical support and solutions to ensure that our clients can choose the most suitable products for their specific applications.

CN Gpower Gearbox Read More »

HCL Series Hydraulic Clutch

The HCL-series hydraulic clutch is designed to provide clutching and de-clutching functions for marine power transmission systems. It is a compact and lightweight component that is highly efficient at transmitting torque and has a long service life. Its compact design allows for easy installation and integration into various marine applications.

Model: HCL30S, HCL30F, HCL100F, HCL30F, HCL250S, HCL250F, HCL320S, HCL320F, HCL600S


The HCL-series hydraulic clutch is designed to be versatile and compatible with diesel engines that have different rotation directions. It is suitable for use in both continuously working machinery that require long-term engagement, as well as non-continuous machinery that require frequent disengagement and re-engagement. Additionally, it is capable of handling the no-load starting of various marine auxiliary machines or universal machinery such as generators, blowers, pumps, net haulers, and more.

HCL Series Hydraulic Clutch Read More »

Marine Auxiliary Gearbox

Marine auxiliary gearboxes are used for various auxiliary power transmission on ships and are not intended for main propulsion use. These gearboxes are commonly used to drive hydraulic pumps, generators, slurry pumps, and other equipment. Upon request, these products can be designed with functions such as clutching and de-clutching, speed increasing or reduction, braking, and multiple PTO output. The marine auxiliary gearbox is widely used in marine applications where precise control and reliable performance are critical. With their versatile design and efficient operation, they are an essential component of marine power transmission systems.


Product description

The 2F700 marine gearbox is designed with a single input and double output, and it features clutching and de-clutching functions. This gearbox is constructed using an external cylindrical helical gear transmission and can be controlled manually, hydraulically, or pneumatically. It is primarily used to drive hydraulic pumps and is a reliable and efficient component of marine power transmission systems.

Marine Auxiliary Gearbox Read More »

GWK Series Marine Gearbox

The GW-series marine gearbox is a product of advanced technology introduced from LOHMANN Company in Germany. The series includes six different models: GWC, GWD, GWS, GWH, GWL, and GWK, with GWC serving as the basic type. With complete specifications, a high market share, and reliable performance, these gearboxes are widely used in large ships such as transport, engineering, and fishing boats. Their advanced design and durability make them a popular choice for marine applications where performance and efficiency are essential.


The GWK-series marine gearbox is designed with one-stage speed reduction, and its input and output are vertically offset and rotate in opposite directions. It features functions such as clutching and de-clutching, and speed reduction. With a compact structure, small volume, and smooth operation, the GWK-series marine gearbox is widely used in marine applications where space is limited. Its reliable performance and efficient design make it a popular choice for marine propulsion systems that require precise speed control and power transmission.

GWK28.30

GWK30.32
GWK32.35

GWK36.39

GWK39.41

GWK42.45
GWK45.49
GWK49.54
GWK52.59

GWK60.66
GWK66.75

GWK70.76

GWK Series Marine Gearbox Read More »

GWH Series Marine Gearbox

The GW-series marine gearbox is a product of advanced technology introduced from LOHMANN Company in Germany. The series includes six different models: GWC, GWD, GWS, GWH, GWL, and GWK, with GWC serving as the basic type. With complete specifications, a high market share, and reliable performance, these gearboxes are widely used in large ships such as transport, engineering, and fishing boats. Their advanced design and durability make them a popular choice for marine applications where performance and efficiency are essential.


The GWH-series marine gearbox is designed with one-stage speed reduction, and its input and output are horizontally offset and rotate in opposite directions. It features functions such as ahead and astern operation, clutching and de-clutching, and speed reduction. With a compact structure, small volume, and smooth operation, the GWH-series marine gearbox is widely used in marine applications where space is limited. Its reliable performance and efficient design make it a popular choice for marine propulsion systems that require precise speed control and power transmission.

GWH28.30

GWH30.32
GWH32.35

GWH36.39

GWH39.41

GWH42.45
GWH45.49
GWH49.54
GWH54.59
GWH60.66
GWH66.75

GWH70.76

GWH Series Marine Gearbox Read More »