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LYJW slewing bearings can be divided into single-row four-point contact ball slewing bearings, single-row cross roller slewing bearings, double-row different ball diameter slewing bearings, three-row cylindrical roller slewing bearings and ball combined slewing bearings according to their structure. The product diameter ranges from 100-15000 mm. This type of bearing can be divided into no-gear bearings, external gear bearings and internal gear bearings. The bearings we produce have the characteristics of reasonable design, light weight, high carrying capacity, and wide application range.
The raceways of slewing rings are quenched on the surface. Its quenching hardness is HRC55-62, making sure that its effective hardening depth is enough.
Production Process
Raw material
LYJW bearing rings are made of high quality 42CrMo/50Mn and the raceway surface is quenched. We can provide rings of other materials according to customerβs specific requirements.
Rough turning
* After rough turning, the workpiece is detected by an ultrasonic flaw detector to examine cracks or other flaws and ensure the bearingβs stable quality and normal service life.
Heat treatment
* Perform medium frequency hardening on the surface of bearing raceway to form a hardened layer with hardnessβ₯55HRC, depthβ₯4mm and the width of soft zone isβ€50mm with a βSβ mark on it.
Gear Processing
For bearings with external or internal gear, gear processing should be performed prior to grinding process to achieve the required gear accuracy.
Drilling
Program on the CNC drilling machine according to the drawing and verify the size accuracy prior to drilling holes.
Grinding
Fine grinding: 46 or 60 grit resin grinding wheel is used to finely process the slewing bearings and achieve the required surface finish and size accuracy.
Assembly
After grinding, pre-assembly is carried out to calculate and adjust the clearance.After adjusting the clearance, check the start friction torque. If it is not acceptable, adjusting the race way and clearance again to achieve the required value.
Inspection-Calipers
LYJW performs strict quality control in compliance with ISO9001-2015 Quality Management System. Every process from materials to finished products is inspected and documented to control the quality of every piece of bearing.
Dial indicator
LYJW performs strict quality control in compliance with ISO9001-2015 Quality Management System. Every process from materials to finished products is inspected and documented to control the quality of every piece of bearing.
Altimeter
LYJW performs strict quality control in compliance with ISO9001-2015 Quality Management System.
Quenching hardened layer depth tester
LYJW performs strict quality control in compliance with ISO9001-2015 Quality Management System.
Shipping Timeframes: All orders are processed within 2-5 business days (excluding weekends and holidays). After your order has been processed, the estimated delivery time is before 20 Feb, 2025, depending on customs, Please note that due to high demand, some items may experience longer shipping times, which will be communicated at order confirmation email.
Order Processing Time: Please allow 2-5 business days for us to process your order before it is shipped . Orders placed after 16:00 on Fridays, or during weekends and public holidays, will begin processing on the next business day. Processing times may be extended during peak seasons or sales events.
Manufacturing Time: Some products needs manufacturing time, the manufacturing process will take approximately 10-30 business days depending on the product. This timeframe may vary depending on the complexity of the product and current demand. but this will be communicated with you during order confirmation.
Returns and Exchanges: We offer a 30-day return policy for most items. If you are not completely satisfied with your purchase, you may return it within 30 days of receipt for a refund or exchange. Items must be unused, in their original packaging, and accompanied by proof of purchase. Return shipping costs are the responsibility of the customer, unless the item was damaged or defective upon arrival.
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Afrimart Online stands as Africa's foremost e-commerce hub, featuring an expansive array of product categories spanning electronics, machinery, toys, furniture, and more. Committed to excellence, our platform delivers swift and streamlined logistics and customs clearance solutions, offering a comprehensive one-stop service for cross-border imports.
Leveraging over three decades of international trade expertise, we ensure a seamless and hassle-free importing experience, providing top-tier products at competitive prices to meet the diverse needs of African consumers.
At Afrimart, we strive to process all orders promptly. Once the payment has been successfully cleared into our account, your order will be processed within 2 to 5 business days. Please note that this processing time excludes weekends and public holidays.
Following the processing of your order, the estimated delivery lead time ranges between 35 to 60 days. However, please be aware that this timeframe is subject to variations due to potential delays in shipping and customs clearance. While we aim to adhere to the original delivery schedule, unforeseen circumstances may occasionally extend the delivery window beyond the anticipated 35 to 60 days.
In the event of high demand or other factors leading to longer shipping times for certain items, we will communicate any expected delays during the initial order confirmation. We appreciate your understanding and patience as we work to ensure your order arrives as swiftly as possible.