Belparts excavator swing motor E304 E305 282-1534 for excavator spare parts
| Product name | Swing motor |
| Place of Origin: | China(mainland) |
| Model: | E304 E305 |
| Part number: | 282-1534 |
| MOQ: | 1 PCS |
| Payment term: | T/T & trade assurance & Paypal |
| Delivery time: | Within 3 days after receiving the payment |
The excavator slewing motor is a core component of the hydraulic system, responsible for driving the upper structure to achieve 360° rotation. Powered by high-pressure hydraulic oil, it delivers high torque and rapid response, making it suitable for frequent starts, stops, and direction changes in harsh conditions. Modern slewing motors are often equipped with brakes and cushion valves to ensure smooth rotation, precise positioning, and reduced mechanical shock, thereby extending equipment lifespan.
1. Basic Functions of the Slewing Motor
The excavator slewing motor is the core actuator of the hydraulic system, responsible for driving the upper structure (including the cab, boom, arm, etc.) to achieve 360° unlimited rotation. The performance of the slewing motor directly affects the machine's operational flexibility, working efficiency, and positioning accuracy. During digging, loading, and leveling operations, the slewing motor must frequently start, stop, and change direction while enduring significant inertial loads, making its design and manufacturing requirements extremely high.
2. Working Principle of the Slewing Motor
The slewing motor is a low-speed, high-torque (LSHT) hydraulic motor, typically using an axial piston or radial piston design. Its working principle is based on converting hydraulic oil pressure energy into mechanical energy:
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Hydraulic Oil Drive: High-pressure oil enters the motor's inlet from the main pump, pushing pistons or gears to move, thereby rotating the output shaft.
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Torque Output: Through a swash plate or eccentric mechanism, the linear motion of hydraulic oil is converted into rotational motion, delivering high torque to overcome the rotational inertia of the excavator's upper structure.
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Oil Return Cycle: The low-pressure oil after performing work returns to the tank through the return line, completing the hydraulic cycle.
| Pos. | Part No | Qty | Parts name | Comments |
| 1. | 434-7695 | [1] | KIT-PUMP BARREL | |
| 2. | 434-7696 | [1] | KIT-CRANKSHAFT | |
| | | | (INCLUDES PARTS MARKED "J" IN GRAPHIC) |
| 3. | 434-7697 | [1] | KIT-BRAKE | |
| 4. | 434-7698 | [1] | KIT-BRAKE VALVE | |
| 5. | 434-7699 | [2] | KIT-CHECK VALVE | |
| 6. | 434-7700 | [2] | KIT-RELIEF VALVE | |
| 7. | 434-7701 | [1] | KIT-GEAR | |
| 8. | 434-7702 | [1] | KIT-GEAR | |
| 9. | 434-7703 | [1] | KIT-PINION | |
| | | | (INCLUDES PARTS MARKED "K" IN GRAPHIC) |
| 10. | 8T-3957 M | [6] | BOLT-SOCKET HEAD (M12X1.75X30-MM) | |
| 11. | 8T-8441 M | [4] | BOLT-SOCKET HEAD (M12X1.75X25-MM) | |
| 12. | 481-2727 | [1] | CASE-VALVE | |
| 13. | 481-2728 | [1] | GAUGE AS | |
| 14. | 481-2729 | [1] | CASE | |
| 15. | 481-2730 | [1] | CASE-GEAR | |
| | | | |
| | | | PARTS SHOWN IN GRAPHIC(S) WITHOUT A REFERENCE NUMBER ARE NOT SERVICED SEPARATELY |
| | | | |
| | | | AVAILABLE REPAIR KIT(S): |
| | 434-7704 | [1] | KIT-SEAL | |
| | M | | METRIC PART |
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FAQ
1.What is the warranty time of the products?
The warranty time is 6/12 months based on the item details; We don't provide warranty time for original and used products.
2.What is your delivery time?
Generally, we will arrange the goods within 24 hours after your payment; if not in stock, stocking time is 3-7 days.
3.What are your main products ?
We are specialized in spare parts for excavator hydraulic system, such as travel/swing motor, travel/swing gearbox/parts, hydraulic pump/parts,gear parts,etc.If you need other excavator parts, we also can supply as your requirements.
4.How can I do if there is something wrong with the goods?
First at all, we have confidence in the quality of our products, if you really found something wrong, please provide pictures or video for us and we will check. After it is confirmed, please return the goods to us and we will offer the correct item.
5.How do I pay?
You can pay by T/T, PayPal (for small amount) and trade assurance.
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