Slewing Mechanism and Spare Parts
A slewing mechanism is an essential component of a Tower Crane that allows it to rotate horizontally. It enables the crane to reach different areas of a construction site without having to move the entire structure.
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The slewing mechanism typically consists of the following components:
1. Slewing Ring: The slewing ring is a large circular bearing that supports the entire weight of the crane and allows it to rotate. It is usually located at the base of the crane and is designed to withstand heavy loads and provide smooth rotation.
2. Slewing Motor: The slewing motor is responsible for providing the necessary power to rotate the crane. It is connected to the slewing ring and is controlled by the crane operator.
3. Gear Mechanism: The gear mechanism consists of a set of gears that transmit the power from the slewing motor to the slewing ring. It ensures smooth and controlled rotation of the crane.
4. Brake System: The brake system is an important safety feature of the slewing mechanism. It is designed to hold the crane in place and prevent any unintended rotation when the crane is not in operation.
5. Control System: The control system allows the crane operator to control the rotation of the crane. It typically includes joysticks or buttons that enable the operator to start, stop, and control the speed and direction of rotation.
Overall, the slewing mechanism plays a crucial role in the functionality and versatility of a tower crane. It allows the crane to move horizontally, reach different areas of a construction site, and perform various lifting tasks efficiently.
Aluminum CNC Machining Parts with Chrome Coated (LM-171M)
Aluminum Plates Manufactured via CNC Machining with Chrome Coating – Model LM-171M
**Model No.:** LM-171M
**Material:** Aluminum, Stainless Steel, etc.
**Surface Treatment:** Chrome Coated, Polishing, Passivation, Anodized
**Processing Method:** CNC Milling, Turning, Drilling, Tapping
**Application Industry:** Automation, Telecommunication, Aerospace
**Tolerance:** ±0.005mm / ISO 2768-m
**Delivery Time:** 8–10 Working Days
We are a professional manufacturer of precision machined components with over 14 years of experience. Our factory is equipped with more than 40 CNC machines, 120 skilled workers, and a 15,000 sqm workshop. We are ISO 9001:2008 and SGS certified, ensuring high-quality products and reliable service.
**Production Equipment List & Inspection Equipment**
| Products Equipment Name | QTY (sets) | Products Equipment Name | QTY (sets) |
|------------------------|------------|------------------------|------------|
| Large-Scale CNC Machining Center | 2 | CNC Machining Center | 30 |
| CNC Milling-Turning Center | 2 | CNC Lathe | 12 |
| Manual Lathe | 6 | Automatic Lathe | 22 |
| Milling Machine | 15 | Surface Grinding Machine | 8 |
| Internal and External Circular Grinding Machine | 5 | Large-Water Milling Machine | 2 |
| Slow Walking Thread Cutting | 1 | Medium Walking Thread Cutting | 2 |
| Fast Walking Thread Cutting | 5 | Electric Discharge Machine | 1 |
| Tapping Machine | 5 | Radial Drilling Machine | 5 |
| Bench Drilling Machine | 4 | Cutting-Off Machine | 2 |
| 16–350 Ton Mechanical Press | 12 | 650 Ton Hydraulic Press | 1 |
| Welding Machine | 5 | Spin Riveting Machine | 4 |
| Ultrasonic Cleaning Machine | 1 | CNC Laser Cutting Machine | 2 |
| CNC Bending Machine | 7 | Chamfering Machine | 4 |
| Laser Marking Machine | 2 | Three-Coordinate Measuring Machine | 1 |
| Profile Projector | 1 | Height Gage | 2 |
| Hardness Testing Machine | 1 | Microscope | 1 |
**Specification**
- **Item:** CNC machining parts, precision CNC parts, CNC turning parts, CNC milling parts, metal parts
- **Material:** Die casting parts, metal stamping parts, sheet metal fabrication, Aluminum, Stainless Steel, Brass, Copper, Carbon Steel, Plastic (POM, PVC, PEEK, PU), Alloy Steel, Titanium, Iron, Spring Steel, Bronze
- **Surface Treatment:** Anodized, Passivation, Heat Treatment, Painting, Powder Coating, Black Oxide, Silver/Gold Plating, Electrolytic Polishing, Nitrided, Phosphating, Sandblasting, Nickel/Zinc/Chrome/TiCN Plated
- **Application Industry:** Aerospace, Automotive, Medical, Telecommunications, Electronics, Military, Packaging, Sensors, Optical Instruments, Computers, Motorcycles
- **Processing Method:** CNC Machining, CNC Turning, 3/4/5 Axis CNC Milling, Wire-Cutting, EDM, Grinding, Drilling, Tapping, Welding, Bending, Die Casting, Stamping
- **Quality Control:** 100% Full Inspection
- **Tolerance:** High Precision: ±0.005mm / ISO2768-m
- **Certificates:** ISO9001:2008, SGS, RoHS
- **Lead Time for Samples:** 5–7 Working Days
- **Lead Time for Orders:** 12–15 Working Days
- **Shipping:** DHL, FedEx, UPS, by Air or Sea
- **Packing:** Bubble Wrap/Pearl Wool + Carton + Wooden Case
- **Sea Port:** Guangzhou / Shenzhen / Hong Kong
- **Payment Term:** T/T, L/C, PayPal, Western Union
- **Drawing Format:** JPG, PDF, DWG, DXF, STEP, IGS, etc.
**FAQ**
1. **Are you a manufacturer?**
Yes, we are. Welcome to visit our factory at any time.
2. **What benefits can we get from you?**
- Competitive pricing
- High quality control: 100% full inspection before shipment
- Fast lead time (5–7 working days for samples, 12–30 for mass production)
- Non-standard/OEM/Customized services available
- High precision, tolerance up to ±0.005mm
- No MOQ, small quantities accepted
3. **How does LEMO control the quality?**
- Operators inspect sizes during processing
- QA conducts full inspection after the first part
- QA checks according to ISO sampling standards before shipping
- Inspection reports accompany the goods
4. **How do you handle complaints?**
- If defects are found, we inform the client and seek approval
- For post-delivery complaints, we respond within 6 hours and provide solutions
- If re-making is needed, we ship replacements within 5 days, covering all costs
5. **What is the payment term?**
- 50% deposit, 50% balance via T/T before shipment for orders over $5,000
- 100% T/T in advance for orders under $5,000
- L/C acceptable for large orders
- PayPal and Western Union for samples or small orders
6. **What is the delivery time?**
- 5–7 working days for samples
- 12–30 working days for mass production
- Urgent orders can be processed quickly upon request
7. **What is the packaging standard?**
- Separate blister boxes or bubble wrap/pearl wool to prevent damage
- Strong DHL export cartons for parts under 100 kg
- Custom wooden cases for parts over 100 kg
8. **Can we get samples?**
- Free samples available, but shipping cost is on the client
- Sample cost ranges from $50–$100 per part, depending on complexity
- Sample charge is refundable after placing a bulk order
9. **What certificates do you have?**
- ISO 9001:2008
- RoHS compliance for materials and surface treatment
10. **How fast can you provide a quotation?**
- Within 6 hours after receiving customer details (drawings, material, quantity, surface treatment)
- For over 100 drawings, we provide a quote within 24 hours
**Company Information**
**Dongguan Lemo Precision Metal Products Co., Ltd.**
**Website:** www.lemo-machining.com
**Phone:** +86-769-22881520
**Address:** No.84 Zhongli Road, Nancheng, Dongguan, Guangdong, China 523000