The speed input range of the Advance 120B marine gearbox is 750-1800 RPM, with engine input power from 79.2 kW to 158.4 kW. the center distance is 190 mm, the reduction ratio range is 2.03-3.73, the transmission capacity range is 0.044-0.088 kW/RPM, the rated propeller thrust is 25 KN, and the input shaft is in the train Opposite to the output shaft.
Advance 120B marine gearbox is composed of transmission shaft, output coupling, input coupling, oil pressure gauge, oil Filter, control system, oil pump and other important components.
Advance 120B marine gearboxes provides two types of control system which are push-pull flexible shaft, electric control for customers to choose. To meet the different requirement of coupling with different engine brand and models, Advance 120B marine gearboxes provide different SAE size coupling and housing including SAE 1, flywheel SAE 14 is available……
All of our Advance 120 series marine gearbox can provide CCS classification certificate, some of series can provide international classifications with extra costs which mainly including French BV, British LR, American ABS, Japanese NK , Norway DNV-GL, Russia RS, South Korea KR, Italy RINA and other classification societies.
Advantages Of Advance 120B Marine Gearbox Parts
It has the functions of reversing, clutching, and deceleration, and can be matched with various marine diesel engines with equivalent torque to form a unit. Applicable to all kinds of medium and small ships.
The gearbox has a compact structure and can be controlled by a variety of control methods. The operation is light and sensitive, and it can be operated from a distance, which is convenient for driving and machine integration.
The advanced design makes the connection of the gearbox very soft, easy to maintain, more durable, and has the characteristics of large transmission power, small size and light weight.
The toothed elastic input coupling and connection cover can be matched with various flywheels and flywheel shells to connect with the host, easy installation and beautiful appearance.
With excellent deceleration effect and strong bearing propeller thrust.
Professional gearbox specialists and after-sales service, spare parts directly available from stock.
Technical Specifications
| Gearbox Model: | 120B |
| Input Speed: | 750-1800 RPM |
| Power: | 79.2-158.4 kW @ 2100 RPM |
| Center Distance: | 190 mm |
| Trans.Capacity: | 0.044-0.088 kW / RPM |
| Reduction Ratio: | 2.03 3.73 |
| Rated Thrust: | 25 kN |
| Dimension: | 605 mm * 744 mm * 770 mm |
| Net Weight: | 400 kg |
| Lead Time: | 15-30 Working Days |
| Payment Terms: | T/T ,L/C |
Search by Part No. or Part Name
Click Kit Name to Check Part List
- Input Shaft Assembly
- Secondary Shaft Assembly
- Output Shaft Assembly
- Housing Assembly
- Input Coupling Assembly
- Pump Assembly
- Hydraulic Control Assembly
- Cooler Assembly
No. | Name | Order No. | Qty | Remarks |
| 1 | Input shaft | 1201—0022B | 1 | / |
| 2 | Screwing Screw | M8 x 8GB73 – 66 | I | / |
| 3 | Working Piston | 1201 – 0005 | 1 | / |
| 4 | Sealing Ring | φ5 x 75Q/HC5—66 | 1 | / |
| 5 | Oil seal | 1201—0025A | 1 | / |
| 6 | Return Plug | 1201 —0004 | 1 | / |
| 7 | Thrust Ring | 1201 一－0016 | 2 | / |
| 8 | Distributor Bush | 1201 – 0008 | I | / |
| 9 | Needle Bearing | 9243/55 | 2 | / |
| 10 | Spacer | 1201 – 0011 | 1 | / |
| 11 | Driving Gear | 1201 – 2012 | 1 | / |
| 11 | Driving Gear | 1201 3012 | 1 | / |
| 12 | Connecting Sleeve | 1201 —0013A | 1 | / |
| l3 | Rear Plate | 1201 – 0014A | 1 | / |
| 14 | Bolt | M8 x L6GB21 – 66 | 4 | / |
| 15 | Flat Key | A 18 x 65JB113—66 | 1 | / |
| 16 | Bolt | M8 x 85GB21—66 | 8 | / |
| 17 | Clutch Retainer | 1201—0024A | 8 | / |
| 18 | Thrust Plate | 1201 – 0009 | 1 | / |
| 19 | Single – face Clutch Disc | 1201 – 0018 | 2 | / |
| 20 | Inner Clutch Disc | 1201 – 0019 | 6 | / |
| 21 | Outer Clutch Disc | 1201—0007 | 5 | / |
| 22 | Clutch Housing | 1201—0006A | 1 | / |
| 23 | Cylinder Body | 1201—0003A | 1 | / |
| 24 | Nut | AM8GB51—66 | 8 | / |
| 25 | Pin | 8ga x 22GBI 19 – 66 | 2 | / |
| 26 | Trans. Gear | 1201-0002 | 1 | / |
| 26 | Trans. Gear | ZT1201-0002 | 1 | / |
| 27 | Ball Bearing | 46118 | 1 | / |
| 28 | Sleeve | 1201—0001 | 1 | / |
| 29 | Roller Bearing | 3612 | 1 | / |
| 30 | Front Plate | 1201—0023 | 1 | / |
| 31 | Washer | 10GB93—66 | 2 | / |
| 32 | Bolt | M10 x 22GB21 – 66 | 2 | / |
| ——END—— | ||||
No. | Name | Order No. | Qty | Remarks |
| 1 | Secondary Shaft | 1202—0001 | 1 | / |
| 2 | Screwing Screw | M8 x 8GB73 – 66 | 1 | / |
| 3 | Working Piston | 1201 – 0005 | 1 | / |
| 4 | Sealing Ring | φ 5 x φ 75Q/HG5—66 | 1 | / |
| 5 | Oil Seal | 1201—0025A | 1 | / |
| 6 | Return Plug with Left – Hand Thread | 1202—0004 | 1 | / |
| 7 | Distributor Bush | 1201—0008 | 1 | / |
| 8 | Needle Bearing | 9243/55 | 2 | / |
| 9 | Spacer | 1201—0011 | 1 | / |
| 10 | Driving Gear | 1201—3012 | 1 | / |
| 10 | Driving Gear | 1201—3012 | 1 | |
| 11 | Thrust Ring | 1201—0016 | 1 | / |
| 12 | Connecting Sleeve | 1201—0013A | 1 | / |
| 13 | Rear Plate | 1201 – 0014A | 1 | / |
| 14 | Bolt | M8 x l6GB2l—66 | 4 | / |
| 15 | Bolt | M8 x 85GB21—66 | 8 | / |
| 16 | Clutch Retainer | 1201—0024A | 8 | / |
| 17 | Thrust Plate | 1201—0009 | 1 | / |
| 18 | Single – face Clutch Disc | 1201—0018 | 2 | / |
| 19 | Inner Clutch Disc | 1201 – 0019 | 6 | / |
| 20 | Outer Clutch Disc | 1201—0007 | 5 | / |
| 21 | Clutch Housing | 1201—0006A | 1 | / |
| 22 | Cylinder Body | 1201—0003A | 1 | / |
| 23 | Nut | AM8GB51—66 | 8 | / |
| 24 | Dowel Pin | 8ga x 22GBI 19—66 | 2 | / |
| 25 | Trans. Gear | 1202—0002 | 1 | / |
| 26 | Trans. Gear | ZT1202—0002 | 1 | / |
| 27 | Roller Bearing | 3612 | 1 | / |
| 28 | Plug | 1202—0005 | 1 | / |
| ——END—— | ||||
No. | Name | Order No. | Qty | Remarks |
| 1 | Bolt | M10 x 22GB21 – 66 | 2 | / |
| 2 | Washer | 10GB93 – 66 | 6 | / |
| 3 | Front Plate | 1203 – 0006 | 1 | / |
| 4 | Roller Bearing (Inner Ring) | 2313 | 1 | / |
| 5 | Ball Bearing | 66314 | 1 | / |
| 6 | Output Shaft | 1203 0001B | 1 | / |
| 7 | Driven Gear | 1203-2002 | 1 | / |
| 7 | Driven Gear | 1203-3002 | 1 | / |
| 8 | Roller Bearing | 3614 | 1 | / |
| 9 | Output Coupling | 1203 – 0003B | 1 | / |
| 10 | Locking Washer | M56GB858 – 67 | 4 | / |
| 11 | Round Nut | M56 x 2GB812 – 67 | 1 | / |
| 12 | Flat Key | A20 x 90JB113 – 60 | 1 | / |
| ——END—— | ||||
No. | Name | Order No. | Qty | Remarks |
| 1 | Gasket | 1204-0021 | 2 | / |
| 2 | Plug | CT016 – 73 | 1 | / |
| 3 | Box Cover | 1204-0001 | 1 | / |
| 4 | Tapered Pin (Inside Threaded) | 12 x 30GB118 – 66 | 2 | / |
| 5 | Sealing Ring | φ2xφ16Q/HC5-66 | 5 | / |
| 6 | Gasket | 1204-0004 | 2 | / |
| 7 | Spring Washer | 8GB93 – 66 | 14 | / |
| 8 | Bolt | M8 x 25GB21-66 | 14 | / |
| 9 | Oil Dipstick | 1204-0025 | 1 | / |
| 10 | Handle | CT018-73 | 1 | / |
| 11 | Roller Bearing | 3614 | 2 | / |
| 12 | Gasket | 1204-0012 | 1 | / |
| 13 | Plug | CT016 – 73 | 4 | / |
| 14 | Rear End Cover | 1204-0014 | 1 | / |
| 15 | Locking Screw | M8 x 8GB73-66 | 2 | / |
| 16 | Sealing Ring | 1204-0032A | 4 | / |
| 17 | Inlet Plug | 1204 – 0015 | 2 | / |
| 18 | Spring Washer | 6GB93-66 | 2 | / |
| 19 | Screw | BM6 x 12GB67 – 66 | 2 | / |
| 20 | Spring Washer | 10GB93 – 66 | 53 | / |
| 21 | Bolt | M10 x 28GB21 – 66 | 53 | / |
| 22 | Cased Seal | φ70 X φ90 x 12HG4-692-67 | 1 | / |
| 23 | End Cover | 1204 – 0016B | 1 | / |
| 24 | Gasket | 1204 – 0017 | 1 | / |
| 25 | Rear End Cover | 1204 – 0022 | 1 | / |
| 26 | Gasket | 1204 – 0023 | 1 | / |
| 27 | Draining Plug | CTO19 – 73 | 1 | / |
| 28 | Copper Washer | 22Q/HC3 – 66 | 1 | / |
| 29 | Housing | 1204 – 0003 | 1 | / |
| 30 | Gasket | 1204 – 0002 | 1 | / |
| 31 | Thrust Ring | 1204 – 0007 | 1 | / |
| 32 | Roller Bearing(Outer Ring) | 2313 | 1 | / |
| 33 | Strainer | 1204 – 0018 | 1 | / |
| 34 | Name Plate | CT001 – 73 | 1 | / |
| 35 | Rivet | 2 x 4GB827-67 | 4 | / |
| 36 | Cover Plate | 135 – 04 – 009 | 2 | / |
| 37 | Bearing Cover | 1204-0019 | 1 | / |
| 38 | Spring Cover | 1204-0008 | 1 | / |
| 39 | Bearing Cover | 1204-0009B | 1 | / |
| 40 | Cased Seal | PDφ60 Xφ80 x12HC4-692-67 | 1 | / |
| ——END—— | ||||
No. | Name | Order No. | Qty | Remarks |
| 1 | Circlip | 24GB894 – 67 | 3 | / |
| 2 | Washer | C1D20 – 73 | 8 | / |
| 3 | Trans. Ring | CTO23 – 73 | 8 | / |
| 4 | Drive Bolt | C1D21 – 73 | 8 | / |
| 5 | Input Coupling | 1205 – 0001B | 1 | / |
| 6 | Drive Bolt Plate | CT022 – 73 | 8 | / |
| 7 | Spring Washer | 12GB93 – 66 | 8 | / |
| 8 | Bolt | M12 x 20GB21 – 66 | 8 | / |
| 9 | Bolt | M8 x 16GB21 – 66 | 16 | / |
| 10 | Spring Washer | 8GB93 – 66 | 16 | / |
| 11 | Input Coupling Carrier | 1205 – 0006D | 1 | / |
| ——END—— | ||||
No. | Name | Order No. | Qty | Remarks |
| 1 | Nut | M14×1.5GB53—76 | 1 | / |
| 2 | Pump Trans. Gear | 1206—0005 | 1 | / |
| 3 | “O” Ring | φ5×φ100Q26—01 | 3 | / |
| 4 | Dowel Pin | 10ga×55GB119—76 | 2 | / |
| 5 | Bolt | M8×55GB21—76 | 4 | / |
| 6 | Spring Washer | 8GB93—76 | 2 | / |
| 7 | Retainer | Q07—01—01 | 1 | / |
| 8 | Lower Pump Housing | Q07—01—04 | 1 | / |
| 9 | Pump Housing | Q07—01—03 | 1 | / |
| 10 | Bearing | Q07—01—05 | 4 | / |
| 11 | Pump Driven Shaft | Q07—01—202 | 1 | / |
| 12 | Flat Key | 4×14GB1096—72 | 2 | / |
| 13 | Pump Driven Gear | Q07—01—201 | 1 | / |
| 14 | Pump Driving Gear | Q07—01—103 | 1 | / |
| 15 | Snap Ring | 16GB895—76 | 2 | / |
| 16 | Pump Driving Shaft | Q07—01—101 | 1 | / |
| 17 | Upper Pump Housing | Q07—01—02 | 1 | / |
| 18 | Gasket | 1206—0009A | 1 | / |
| 19 | Connecting Plate | 1206—0001C | 1 | / |
| 20 | Washer | 8GB97—76 | 4 | / |
| 21 | Bolt | M8×20GB21—76 | 4 | / |
| 22 | Bolt | M10×30GB21—76 | 6 | / |
| 23 | Spring Washer | 10GB93—76 | 6 | / |
| ——END—— | ||||
No. | Name | Order No. | Qty | Remarks |
| 1 | Nut | M14×1.5GB923—76 | 1 | / |
| 2 | Copper Washer | 14Q20—03 | 1 | / |
| 3 | Filter Housing | Q21—11 | 1 | / |
| 4 | Tapered Spring | Q09—01A—02 | 1 | / |
| 5 | Filter | uur36A—12—200 | 1 | / |
| 6 | Steel Ball | φ10GB308—77 | 1 | / |
| 7 | Spring | 0.8×9×35.8JB272—60 | 1 | / |
| 8 | Filter Spindle | Q09—01A—03 | 1 | / |
| 9 | Pin | 2.5×16GB119—76 | 1 | / |
| 10 | “O” Ring | 5×φ90Q26—01 | 1 | / |
| 11 | Plug | M20×1.5Q20—01 | 1 | / |
| 12 | Copper Washer | 20Q20—03 | 1 | / |
| 13 | Washer | 8GB97—76 | 1 | / |
| 14 | Spring | 1.2×12×64JB272—60 | 1 | / |
| 15 | Steel Ball | φ13GB308—77 | 1 | / |
| 16 | Connecting Plate | 135—07B—001 | 1 | / |
| 17 | Plug | φ12Q21—13 | 1 | / |
| 18 | Bolt | M8×35GB21—76 | 3 | / |
| 19 | Washer | 8GB93—76 | 8 | / |
| 20 | Plug | φ7Q21—14 | 1 | / |
| 21 | “O” Ring | φ16×2.4GB1235—76 | 1 | / |
| 22 | Gasket | 135—07—007 | 1 | / |
| 23 | Bolt | M8×30GB21—76 | 5 | / |
| 24 | Hydraulic Control System | Q06—01A—00 | 1 | / |
| 25 | Bolt | M10×30GB21—76 | Details on Parts list of Hydraulic Control As-sembly（Q06—01A—00） | / |
| 26 | Washer | 10GB93—76 | Details on Parts list of Hydraulic Control As-sembly（Q06—01A—01） | / |
| 27 | Gasket | Q06—01A—12 | Details on Parts list of Hydraulic Control As-sembly（Q06—01A—02） | / |
| 28 | Copper Washer | 14Q20—03 | Details on Parts list of Hydraulic Control As-sembly（Q06—01A—03） | / |
| 29 | Oil Pipe Assembly | Q06—01A—200 | Details on Parts list of Hydraulic Control As-sembly（Q06—01A—04） | / |
| 30 | Bolt | M14×1.5×30Q21—19 | Details on Parts list of Hydraulic Control As-sembly（Q06—01A—05） | / |
| 31 | Plug | Q20—01M14×1.5 | Details on Parts list of Hydraulic Control As-sembly（Q06—01A—06） | / |
| ——END—— | ||||
No. | Name | Order No. | Qty | Remarks |
| 1 | Gasket | 1208—0011 | 1 | / |
| 2 | Cooler Bottom | 1208—0007B | 1 | / |
| 3 | Rear Flange | 1208—0006 | 1 | / |
| 4 | Water Pipe | 1208—0005A | 120 | / |
| 5 | Spacer | 1208—0003 | 6 | / |
| 6 | Radiator | 1208—0004 | 10 | / |
| 7 | Flange | 1208—0002A | 1 | / |
| 8 | Gasket | 1208—0012 | 1 | / |
| 9 | Cooler Cover | 1208—0001 | 1 | / |
| 10 | Spring Washer | 8GB93—66 | 8 | / |
| 11 | Bolt | M8×50GB21—66 | 8 | / |
| 12 | Copper Washer | 8Q/HC3—66 | 1 | / |
| 13 | Draining Nut | 1208—0013A | 1 | / |
| ——END—— | ||||
Note: All Above Data are Just for Reference, All Data Might Change Without Notices or Updates, Please Contact Our Sales Team to Confirm All Details Via WhatsApp or Email.
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