High-Quality Excavator Swing Mechanism
E325D 334-9978 E329D 188-4175 MOTOR GP-SWING PART OF 334-9971 179-9775 MOTOR GP-SWING
Reverse-Prevention Safety Feature
The E325D 334-9978 E329D 188-4175 MOTOR GP-SWING excavator swing motor features a built-in reverse-prevention valve that prevents unintended reverse rotation, eliminating operational errors and safety hazards.
- One-way valve design ensures hydraulic oil flows in only one direction
- Prevents motor reversal due to external forces or hydraulic fluctuations
This safety feature is particularly critical during heavy lifting operations where reverse rotation could cause load drops and serious accidents. The high-flow capacity valve maintains normal motor operation and response speed while providing reliable performance under high hydraulic pressure and frequent use conditions.
Product Specifications
| Model |
E325D/E329D/E325C |
| Category |
Excavator Swing Hydraulic Motor |
| Brand |
TGFQ |
| Part Numbers |
188-4175/334-9978 |
| Motor Type |
M5X180 |
| Packing |
Wooden case |
| Delivery Time |
1-3 days after payment confirmation |
| Shipping Methods |
By Sea, Air, or Express |
Quality Assurance
Each unit undergoes thorough inspection and detailed photos are provided for buyer confirmation before shipping to ensure product quality and satisfaction.
Hydraulic Motor Applications
Hydraulic motors are essential components in earthmoving equipment including excavators, backhoe loaders, skid-steer loaders, forklifts, heavy dump trucks, and bulldozers. They power hydraulic cylinders that extend and retract during various operational cycles.
Swing Brake Operation
The swing brake features a multi-disc and plate assembly located in the first stage planetary gear. This spring-applied, hydraulically-released system functions as a parking brake and is not designed for cyclic service braking. Discs and plates are lubricated by the release signal oil for optimal performance and longevity.
Product Images
Swing Motor Parts Breakdown
| Position |
Part Number |
Part Name |
Quantity |
| 1 |
188-4163 |
Shaft |
1 |
| 2 |
096-1533 |
Seal-Lip Type |
1 |
| 3 |
188-4170 |
Bearing |
1 |
| 4 |
188-4169 |
Body |
1 |
| 5 |
188-4165 |
Plate |
1 |
| 6 |
188-4167 |
Plate |
1 |
| 7 |
334-9982 |
Piston AS |
1 |
| 8 |
188-4166 |
Plate |
1 |
| 9 |
188-4164 |
Barrel |
1 |
| 10 |
188-4172 |
Plate-Friction |
3 |
| 11 |
188-4173 |
Plate-Separator |
4 |
| 12 |
7Y-4290 |
Piston-Brake |
1 |
| 13 |
5J-2383 |
Seal-O-Ring |
1 |
| 14 |
7Y-4294 |
Seal-O-Ring |
1 |
| 15 |
4I-5849 |
Seal-O-Ring |
1 |
| 16 |
123-2139 |
Spring |
20 |
| 17 |
188-4162 |
Head GP-Motor |
1 |
| 18 |
099-8111 |
Pin-Spring |
2 |
| 19 |
3J-1907 |
Seal-O-Ring |
2 |
| 21 |
204-2677 |
Plate-Valve |
1 |
| 22 |
188-4171 |
Bearing |
1 |
| 23 |
170-9996 |
Plug |
2 |
| 24 |
170-9985 |
Valve-Piston |
2 |
| 25 |
7Y-5221 |
Bolt-Socket Head (M20X2.5X45-MM) |
4 |
| 28 |
188-4176 |
Kit-Seal (Swing Motor) |
1 |
Warehouse & Inventory Capacity
Our facility includes over 4000 square meters of three-dimensional warehouse space plus 2000 square meters of outdoor storage, ensuring adequate inventory levels and rapid response to customer requirements. Fast delivery is our competitive advantage.
Frequently Asked Questions
Can I order a sample for testing first?
Yes, we welcome sample orders for testing and evaluation.
How do I place an order?
Simply provide the model and quantity you need. We will issue a proforma invoice, and upon payment confirmation, your order will be processed. Preparation time varies based on order complexity.
Do you have your own factory?
Yes, we operate our own manufacturing facility with 23 years of specialized experience in the excavator gear industry.
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