Linear ball bearings are essential components in many mechanical systems, enabling smooth, low-friction movement along a single axis. Selecting the appropriate bearing is crucial for ensuring optimal performance, longevity, and efficiency in applications ranging from 3D printers to CNC machines.
- [SIZE] - Model: LM8UU, 8x15x24mm Metric Double Seal Linear Bearing
- [USAGE] - Linear bearings are part of linear motion systems, often used in conjunction with cylindrical shafts or guideways.
- [FEATURES] - These ball bearing with two rubber dust sealed to prevent ingress of dirt, water and foreign matter
- [CAPABILITY] - Static Load Capacity (Cor): 265N, Dynamic Load Capacity (Cr): 402N (Recommended load is 80% of rated load, not to exceed rated load.)
- Specifications: LM8UU, Bore Diamter (dr): 8mm, Outer Diameter (D): 15mm, Total Length (L): 24mm.
- Standardized production: Smooth moving, low friction, high rigidity and long life characteristics make it suitable for bearing various parts of various sizes, which are standardized and interchangeable.
- Double sealed design: Our Slide Bearing are carefully designed to be double sealed to prevent foreign particles from entering and preserve the quality of lubricant.
- Applications: It is generally used on 3D printers and CNC machines. As a design tool for linear motion products, it collaborates with linear bearing to guarantee superior sports performance under high load or long stroke environments.
- They are good abrasion resistance, not easy to rust, high precision and good strength. But if you have any question about the item, please feel free to contact the CNBTR Service, we will try our best to give you a satisfactory answer.
- Widely used for digital 3D coordinate measuring equipment such as precision equipment or special machinery industry
- Suitable for kinds of electronic equipment/guide bar, drive shaft.
- Bearing Pillow Block have a certain bearing capacity, can hold in ordinary precision rack, strong adaptability.
- Precision Engineering: Features an 8mm bore diameter, 15mm outer diameter, and 24mm length, ensuring smooth and accurate linear motion for high-performance applications
- Double Rubber Seals: Equipped with dual-side rubber seals to protect against dust, debris, and contaminants, extending bearing life and maintaining optimal performance
- Versatile Compatibility: Perfectly suited for CNC machines, 3D printers, and other linear motion systems requiring reliable and low-friction movement
- Durable Construction: Made from high-quality materials, these bearings offer excellent wear resistance and durability, even under heavy loads and continuous use
- 20mm 0.79inch SBR20 UU ball bearings sliding blocks, made of aluminum alloy and bearing steel, heavy duty and sturdy
- High Quality - With excellent motion ball, it moves smoothly with low friction. You can use it for a long time.
- Size - Shaft diameter: 20mm. Overall size: 1.9” x 2” x 1.5”
- Model: LMK12UU (Nominal Shaft Diamter (dr): 12mm, Outer Diameter (D): 21mm, Total Length (L): 30mm)
- Square Flange Linear Motion Ball Bearing Bushing Sealed on Both Side
- Chromium Steel shell and bearing ball, good abrasion resistance, high precision and good strength
- Smooth moving, low friction, high rigidity and long working life
- [SIZE] - Model: LM25UU, 25x40x59mm Metric Double Seal Linear Bearing
- [USAGE] - Linear bearings are part of linear motion systems, often used in conjunction with cylindrical shafts or guideways.
- [FEATURES] - These ball bearing with two rubber dust sealed to prevent ingress of dirt, water and foreign matter
- [CAPABILITY] - Static Load Capacity (Cor): 980N, Dynamic Load Capacity (Cr): 1570N (Recommended load is 80% of rated load, not to exceed rated load.)
- Specifications: LM12UU, Bore Diamter (dr): 12mm, Outer Diameter (D): 21mm, Total Length (L): 30mm.
- Standardized production: Smooth moving, low friction, high rigidity and long life characteristics make it suitable for bearing various parts of various sizes, which are standardized and interchangeable.
- Double sealed design: Our Slide Bearing are carefully designed to be double sealed to prevent foreign particles from entering and preserve the quality of lubricant.
- Applications: It is generally used on 3D printers and CNC machines. As a design tool for linear motion products, it collaborates with linear bearing to guarantee superior sports performance under high load or long stroke environments.
- Model: SCS8UU (Bearing No.: LMF8UU, Nominal Shaft Diamter (dr): 8mm)
- Aluminium Alloy Linear Ball Bearing Slide Block Units
- Light-weight housing and Chromium Steel bearing ball, good abrasion resistance, high precision and good strength
- Smooth moving, low friction, high rigidity and long working life
- Model: SCS20UU, Inner Diameter: 20mm/ 0.79",(For Linear Bearing Slide Bush: LM20UU) Slide Block Size: 54mm x 50mm x 41mm / 2.13" x 1.97" x 1.61" (L*W*H); Mounted Hole Size: M6.
- Dynamic Load Rating (C): 882 N, Static Load Rating (Co): 1370 N.Package:4 x Linear Bearing Sliding Blocks
- [Precision Manufacturing]: The high-density aluminum alloy structure makes the slider a strong load-bearing capacity, and surface oxidation treatment, durable and corrosion-resistant.
- [High Performance]: Smooth movement, low friction, high rigidity, easy to maintain and replace.
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Last update on 2026-10-09 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Linear Ball Bearings
Understanding Linear Ball Bearing Types
Linear ball bearings are primarily categorized by their housing design and mounting style. Open type bearings are adjustable and often used in applications where the shaft is supported by external structures. Closed type bearings offer a more contained unit and are suitable for applications with limited space. Flanged bearings provide a mounting surface directly on the bearing body, simplifying installation in certain setups. Consider the specific demands of your project, such as load capacity, operating environment, and space constraints, when choosing a type.
Key Specifications to Consider
When evaluating linear ball bearings, several specifications are critical. Load capacity (dynamic and static) dictates how much weight the bearing can support. Accuracy and precision are vital for applications requiring tight tolerances. Shaft diameter compatibility is non-negotiable; ensure the bearing bore matches your shaft size precisely. Operating temperature range and lubrication requirements are also important factors, especially for industrial or high-performance uses. Pay attention to the number of ball circuits, as more circuits generally translate to higher load capacity and smoother motion.
Materials and Durability
The materials used in linear ball bearings significantly impact their durability and performance. Standard bearings often feature hardened steel races and balls for excellent wear resistance. Stainless steel options are available for corrosive environments or applications requiring higher hygiene standards. Some high-performance bearings may incorporate special coatings or advanced materials to reduce friction and extend lifespan. Inspecting the quality of the seals, if present, is also important, as they protect the internal components from contaminants.
Mounting and Installation
Proper mounting is essential for the longevity and performance of linear ball bearings. Ensure the mounting surface is flat and rigid to prevent deformation, which can bind the bearing. For open type bearings, shaft support is critical to prevent sagging under load. Follow manufacturer guidelines for tightening fasteners to avoid over- or under-compression, which can affect performance. Proper alignment of the shaft and bearing is paramount to achieving smooth, unimpeded motion.
