Wholesale Open Type Linear Ball Bearing

Open Type Linear Ball Bearings for Demanding Linear Motion

As a Wholesale Open Type Linear Ball Bearing manufacturer, we match product configuration to the application, operating limits, interfaces and acceptance criteria defined for each project.

Shanghai Yinin Bearing & Transmission Company is a wholesale Open Type Linear Ball Bearing manufacturer and supplier based in China. Since 1999, we have evolved from representing domestic bearing brands to operating our own manufacturing facilities, including Jiangsu Dahua Bearing Manufacturing Co., Ltd. Today, we supply a comprehensive range of open type linear ball bearings designed for industrial automation, packaging machinery, textile equipment, and other precision linear motion systems.

Our open type linear ball bearings are engineered to provide smooth, low-friction motion while accommodating shafts that require support along their length. The open design allows the bearing to be used on fully supported shafts, making them ideal for applications where high rigidity and load capacity are critical. We offer three primary series—LM, LMB, and LME—each tailored to different dimensional standards and performance requirements.

Our Open Type Linear Ball Bearing Range

We manufacture open type linear ball bearings in metric and inch sizes, with options for chrome steel and stainless steel. The table below summarizes the key series we supply and their typical applications.

Each series is available in standard and stainless steel versions. Stainless steel open linear ball bearings are particularly suited for corrosive environments or applications requiring high cleanliness, such as medical and food processing equipment.

Why Choose Open Type Linear Ball Bearings?

Open type linear ball bearings differ from closed types by having a longitudinal slot in the outer sleeve. This slot allows the bearing to be used on shafts that are supported along their entire length, providing higher rigidity and load capacity compared to unsupported shafts. The open design also facilitates easier installation and maintenance, as the bearing can be clipped onto the shaft without removing end supports.

Key benefits include:

• High load capacity: The open design allows for a larger ball complement, increasing radial load capacity.
• Smooth motion: Precision-ground balls and hardened steel races ensure low friction and consistent linear movement.
• Versatility: Available in various sizes and materials to match different shaft diameters and environmental conditions.
• Cost-effective: Our wholesale manufacturing approach provides competitive pricing without compromising quality.

Engineering and Quality Assurance

Our manufacturing process is backed by over 25 years of industry experience and a dedicated team of 12 technicians. We employ advanced CNC machines, precision grinders, and automated production lines to ensure dimensional accuracy and surface quality. Each bearing undergoes rigorous inspection, including three-coordinate measuring, roundness testing, and surface roughness analysis, to meet international standards.

We follow a strict quality management system aligned with ISO 9001, with in-process inspections at every stage. For finished products, we conduct full inspections according to customer requirements and international standards. Our factory in Jiangsu Province is equipped with modern testing instruments, ensuring that every batch meets your specifications.

Configuration and Customization

We understand that each application has unique requirements. Our open type linear ball bearings can be customized in terms of:

• Material: Chrome steel (GCr15) or stainless steel (AISI 440C, AISI 304).
• Seals: Options for rubber seals (UU) or metal shields (ZZ) to protect against contamination.
• Precision grade: Standard or high-precision grades to suit your motion control needs.
• Special sizes: Non-standard dimensions can be manufactured upon request.

Our technical team works closely with you to select the right bearing type and configuration, ensuring optimal performance and longevity.

Integration and Installation Support

Open type linear ball bearings are typically used with hardened and ground shafts. For best results, we recommend shaft hardness of HRC 60-64 and surface roughness of 0.4 µm Ra or better. Our bearings are designed for easy installation—simply slide the bearing onto the shaft and secure it with the retaining ring or housing.

We provide installation guidelines and technical documentation to assist your engineering team. If you are integrating our bearings into a new design, our engineers can offer advice on housing fits, shaft tolerances, and lubrication requirements.

Maintenance and Serviceability

Proper maintenance extends the life of linear bearings. We recommend periodic lubrication with lithium-based grease or light oil, depending on speed and load. Our open type bearings are designed for easy cleaning and re-lubrication, minimizing downtime.

We maintain a stock of common sizes for quick delivery, and our after-sales team is available to address any technical questions. For large-volume orders, we can schedule production to meet your timeline.

Information We Use to Configure Your Solution

To provide an accurate quotation and configuration, please share the following details:

• Shaft diameter and tolerance
• Required travel length and speed
• Applied loads (radial and axial)
• Operating environment (temperature, humidity, contaminants)
• Desired material (chrome steel or stainless steel)
• Quantity and target delivery date

With this information, we can recommend the appropriate series and configuration, and provide a detailed proposal.

Frequently Asked Questions

What is the difference between open and closed linear ball bearings?

Open type linear ball bearings have a longitudinal slot that allows them to be used on fully supported shafts, providing higher rigidity and load capacity. Closed types are used on unsupported shafts and are easier to install but offer lower load capacity.

Can you provide stainless steel open linear ball bearings?

Yes, we offer stainless steel versions of all our open type series, suitable for corrosive environments and food-grade applications.

What is the minimum order quantity?

Our minimum order quantity is 100 sets for standard sizes, but we can accommodate smaller orders for prototyping or urgent needs.

How do you ensure quality consistency across large orders?

We implement strict process control and full inspection of finished products. Our quality management system is ISO 9001 certified, and we use advanced testing equipment to verify dimensions and surface quality.

What is your typical lead time?

For in-stock items, we ship within 3 working days. For custom orders, lead time depends on specifications and quantity, typically 2-4 weeks.