Double-Wide Type Linear Ball Bearings for Demanding Linear Motion
Shanghai Yinin Bearing & Transmission Company is a China-based manufacturer and exporter of linear ball bearings, specializing in double-wide type configurations. Our range includes LM..LUU, LMB..LUU, and LME..LUU series, engineered for applications that require higher load capacity, improved rigidity, and smooth motion under demanding conditions. With over 20 years of bearing industry experience, we supply wholesale quantities to machinery builders, automation integrators, and distributors worldwide.
Double-wide type linear ball bearings feature two ball circuits side by side, effectively doubling the load-carrying surface compared to standard types. This design reduces contact stress, extends service life, and provides stable guidance for precision linear motion systems. Our bearings are available in open and sealed variants, with options for lubrication and mounting to suit your specific application.
As a Wholesale Double-Wide Type Linear Ball Bearing manufacturer, we combine manufacturing capability with export experience, ensuring consistent quality and reliable supply for your projects.
Our Double-Wide Type Series
We offer three primary series, each tailored to different load and speed requirements. The table below summarizes the key characteristics and typical applications.
| Series |
Design Features |
Typical Applications |
| LM..LUU |
Standard double-wide, balanced load distribution, low friction |
Precision machine tools, automation equipment, industrial robots |
| LMB..LUU |
Reinforced structure, higher load capacity, robust materials |
Heavy machinery, aerospace actuators, high-speed railway systems |
| LME..LUU |
Optimized for heavy loads and high speeds, enhanced lubrication |
High-speed machining centers, automated production lines, precision assembly |
Application Fit and Selection Considerations
Choosing the right double-wide linear bearing depends on your load, speed, and environmental conditions. Our engineering team evaluates the following parameters to recommend the optimal series and configuration:
- Load requirements: Determine radial and moment loads. For higher loads, LMB..LUU or LME..LUU series are preferred.
- Speed and acceleration: High-speed applications benefit from LME..LUU series with optimized internal geometry and lubrication.
- Shaft diameter and tolerance: We match bearing bore size to your shaft specification, ensuring proper fit and clearance.
- Environmental factors: For dusty or wet conditions, sealed versions with appropriate lubrication are available.
- Mounting configuration: We can supply bearings with or without flanges, and provide guidance on housing design.
Engineering and Manufacturing Support
Our integrated group includes Jiangsu Dahua Bearing Manufacturing Co., Ltd., which handles production and quality control. We operate modern workshops with precision measuring instruments, and our quality system includes inspections after each process. For finished products, we conduct full inspections according to customer requirements and international standards.
We support customization of non-standard dimensions, materials (chrome steel or stainless steel), and special packaging. Our technical team can assist with bearing selection, life calculation, and integration into your linear motion system.
Quality Assurance and Testing
Every double-wide type linear ball bearing undergoes rigorous quality checks, including dimensional accuracy, radial clearance, and surface finish. We test for smoothness of motion and noise levels to ensure consistent performance. Our factory is equipped with advanced testing equipment, and we can provide inspection reports upon request.
Information We Use to Configure Your Solution
To prepare an accurate quotation and technical proposal, please provide the following details:
- Bearing series and size (e.g., LM20LUU) or shaft diameter
- Required quantity and target delivery schedule
- Application description (load, speed, duty cycle)
- Environmental conditions (temperature, humidity, contamination)
- Any special requirements (seals, lubrication, material, packaging)
Frequently Asked Questions
What is the difference between LM..LUU and LMB..LUU series?
LM..LUU series are standard double-wide bearings for general automation and machine tool applications. LMB..LUU series have a reinforced outer sleeve and larger ball complement, providing higher load capacity for heavy-duty machinery.
Can you supply stainless steel double-wide linear bearings?
Yes, we offer bearings in stainless steel for corrosion-resistant applications. Please specify your material requirement, and we will confirm availability for the series and size.
What is the minimum order quantity for wholesale?
Our standard MOQ is 100 pieces per size, but we can accommodate smaller trial orders for evaluation. Contact us with your requirements for a specific quote.
How do you ensure quality for large-volume orders?
We implement in-process inspections and final inspection per international standards. For bulk orders, we can provide sampling plans and test certificates as agreed.
What is the typical lead time?
For in-stock items, we ship within 3 working days. For production orders, lead time depends on quantity and customization, typically 2-4 weeks after confirmation.
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