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Mr. Perry Wu International Sales Director
Genuine OEM Fast 7DS200K Transmission Shaft Assemblies - Left/Right Countershaft & Second Shaft Components
|
Model |
7DS200K |
|
Brand |
Fast |
|
Number of Gears |
7 forward gears + 1 reverse gear |
|
Shifting Mode |
Manual |
|
Maximum Input Torque |
2000 N·m |
|
Core Application Scenario |
Mining trucks (e.g., LGMG, Weichai mining trucks, clarifying application scope) |
Product Description
These shaft assemblies are engineered to Shaanxi Fast Gear’s original specifications, exclusively for the Fast 7DS200K 7-speed manual transmission (7 forward + 1 reverse gear). Built for heavy-duty scenarios like mining, construction, and heavy haulage, they deliver reliable performance and seamless compatibility as verified in practical applications.
Constructed from high-strength alloy steel—commonly used for heavy-duty transmission shafts—all assemblies undergo precision forging, heat treatment, and gear hobbing-grinding processes to meet the transmission’s officially rated 2000N·m max input torque and 2600rpm rated speed. Strict quality inspections ensure full compliance with OEM standards.
Left Countershaft Assembly
Countershaft, countershaft drive gear, 4th/5th/6th gears, sleeve, bearing, stop ring, and square key. Adopts modular hot-fitting gear-matching technology and full helical tooth design with optimized tooth root arc, reinforced by shot peening to enhance load-bearing capacity—consistent with Fast’s heavy-duty transmission manufacturing practices.
Right Countershaft Assembly
Identical to the left countershaft assembly in structure and specifications—countershaft, drive gear, graded gears, sleeve, bearing, stop ring, and square key. Works with the left countershaft to achieve balanced torque distribution, a core advantage of Fast’s dual countershaft structure that reduces gear stress.
Second Shaft Assembly
Second shaft, 1st/2nd/3rd/4th/5th/6th/reverse gears, synchronizer sleeves, gear spacers, baffles, elastic cylinder pins, and high-precision bearings. Integrates floating gear design to offset installation errors, improve transmission smoothness, and reduce radial force as designed in the original 7DS200K transmission.
As direct-fit parts, they require no modification for installation, perfectly matching the original transmission structure and reducing maintenance downtime. Fully interchangeable with original equipment, they’re ideal for routine servicing, emergency repairs, or fleet maintenance. We provide professional after-sales support and technical consultation in line with Shaanxi Fast Gear’s service standards for reliable heavy-duty operation.
Detail Parts List
1、 Left Countershaft Assembly
|
No. |
Parts No. |
Part Name |
Qty. |
|
1 |
7DS180-1701056 |
Countershaft Drive Gear |
1 |
|
2 |
12JS280T-1701058 |
Sleeve |
1 |
|
3 |
7DS180-1701054 |
Countershaft 6th Gear |
1 |
|
4 |
7DS180A-1701053 |
Countershaft 5th Gear |
1 |
|
5 |
7DS200K-1701052 |
Countershaft 4th Gear |
1 |
|
6 |
7DS200K-1701048 |
Countershaft |
1 |
|
|
NUP216E |
Bearing |
1 |
|
|
Q43180 |
Stop Ring |
1 |
|
|
16JS260T-1701057 |
Countershaft Stop Ring |
1 |
|
7 |
7DS180-1701049 |
Left Rear Countershaft |
1 |
|
8 |
Q5280514 |
Elastic Cylinder Pin |
1 |
|
9 |
7DS180-1701051 |
Countershaft Square Key |
1 |
2、Right Countershaft Assembly
|
No. |
Parts No. |
Part Name |
Qty. |
|
1 |
7DS180-1701056 |
Countershaft Drive Gear |
1 |
|
2 |
12JS280T-1701058 |
Sleeve |
1 |
|
3 |
7DS180-1701054 |
Countershaft 6th Gear |
1 |
|
4 |
7DS180A-1701053 |
Countershaft 5th Gear |
1 |
|
5 |
7DS200K-1701052 |
Countershaft 4th Gear |
1 |
|
6 |
7DS200K-1701048 |
Countershaft |
1 |
|
|
NUP216E |
Bearing |
1 |
|
|
Q43180 |
Stop Ring |
1 |
|
|
16JS260T-1701057 |
Countershaft Stop Ring |
1 |
|
7 |
7DS180-1701050 |
Right Rear Countershaft |
1 |
|
8 |
Q5280514 |
Elastic Cylinder Pin |
1 |
|
9 |
7DS180-1701051 |
Countershaft Square Key |
1 |
3、Output Shaft Assembly
|
No. |
Parts No. |
Part Name |
Qty. |
|
1 |
Q43130 |
Circlip for Shaft |
1 |
|
2 |
502706KH |
Bearing |
1 |
|
3 |
7DS180-1701108 |
4th/5th/6th/7th Gear Synchronizer Sleeve |
2 |
|
4 |
7DS180-1701116-1 |
Output Shaft 6th Gear |
1 |
|
5 |
7DS180A-1701115 |
Output Shaft 5th Gear |
1 |
|
6 |
16JS200-1701122 |
Output Shaft Gear Washer |
3 |
|
7 |
7DS200K-1701114 |
Output Shaft 4th Gear |
1 |
|
8 |
7DS180-1701125-1 |
3rd Gear Baffle |
1 |
|
9 |
7DS200K-1701113 |
Output Shaft 3rd Gear |
1 |
|
10 |
7DS200K-1701112 |
Output Shaft 2nd Gear |
1 |
|
11 |
7DS180-1701123 |
Output Shaft 1st/2nd Gear Spacer |
1 |
|
12 |
7DS180-1701111-1 |
Output Shaft 1st Gear |
1 |
|
13 |
7DS180-1701109 |
Reverse/1st/2nd/3rd Gear Synchronizer Sleeve |
2 |
|
14 |
7DS180-1701127 |
Low Gear Adjustment Washer |
3 |
|
15 |
7DS180-1701110-1 |
Output Shaft Reverse Gear |
1 |
|
16 |
7DS180-1701121 |
Reverse Gear Baffle |
1 |
|
17 |
7DS180-1701105 |
Output Shaft |
1 |
|
18 |
Q5280310 |
Elastic Cylinder Pin |
2 |
|
19 |
7DS180-1701131 |
Output Shaft Front Section Hex Key |
2 |
|
20 |
Q5210612 |
Cylinder Pin |
|
|
21 |
7DS180-1701132 |
Output Shaft Middle Section Hex Key |
2 |
|
22 |
7DS180-1701133 |
Output Shaft Rear Section Hex Key |
2 |
Product Advantages
Power Split Load Reduction
Follows Fast’s dual countershaft structure, splitting total torque equally between left/right countershafts to reduce gear stress and lower failure rate .
High-Precision Meshing & Low Noise
Full helical gears with precision grinding and hot-fitting gear-matching tech ensure smooth engagement, minimizing friction and operating noise .
Fatigue-Resistant & Durable
High-strength alloy steel + shot peening boosts tooth hardness and impact resistance, suitable for high-load continuous operations .
Seamless Original Fit
Manufactured to OEM dimensional specs and assembly standards, enabling direct replacement without adjustments .
Efficient Power Transmission
Optimized shaft-gear layout reduces energy loss, improving fuel economy and enhancing climbing/heavy-haul capabilities .
Payment & Shipping Terms
● MOQ: 1 piece
● Packaging: Customizable wooden crate/carton
● Delivery: 3-20 working days (express: DHL/FedEx; sea freight for bulk)
● Payment: L/C, T/T, Western Union; tracking number provided in 24hrs
● After-Sales Service：24-hour technical support, global service network