The F693ZZ Flanged Miniature Deep Groove Ball Bearing (3x8x4mm) is a compact and high-precision bearing designed for applications requiring space efficiency and reliable performance. Manufactured from high-quality chrome steel (GCr15), it ensures durability and resistance to wear. Its flanged design simplifies axial positioning and mounting, making it ideal for use in tight spaces. The bearing is pre-lubricated and features double metal shields (ZZ) to protect against contaminants, ensuring smooth and low-friction operation.

The F688ZZ Deep Groove Ball Bearing (8x16x5mm) is a compact, high-precision bearing designed for applications where space is limited but performance is paramount. Crafted from durable chrome steel (GCr15), this bearing offers excellent resistance to wear and corrosion. Its flanged design simplifies mounting, making it ideal for 3D printers, CNC machines, robotics, and various DIY electronics projects.

The 623ZZ Deep Groove Ball Bearing (3x10x4mm) is a miniature bearing designed for compact mechanical systems requiring smooth and reliable operation. It's commonly used in applications such as 3D printers, CNC machines, robotics, and small motors.

The 624ZZ is a small sealed ball bearing ideal for 3D printers, CNC machines, robotics, and other applications where compact, reliable rotation is needed. It has metal shields on both sides (“ZZ”) to protect against dust and to help retain the lubricant inside. Because of its small size and good balance between strength and speed, it works great on moving parts like pulleys, fans, idlers, or anywhere you need smooth, quiet rotation.

The 625-2RS is a compact, high-quality deep groove ball bearing with rubber seals on both sides. The double sealing helps keep lubrication inside while blocking out dust, dirt, and moisture. Because of its reliability and small size, this bearing is commonly used in 3D printers, CNC machines, robotics, electric motors, and other precision mechanical applications. It provides smooth operation, low friction, and long service life even under demanding conditions.

The F624ZZ is a single-row deep groove ball bearing designed for high-speed operations and low friction. Its "ZZ" designation indicates metal shields on both sides, providing protection against dust and retaining lubrication. This makes it suitable for applications requiring durability and minimal maintenance.

If you're building or upgrading a machine with linear rails or tracks, the V623ZZ is a strong candidate for smooth guidance. It's a compact, metal V-groove bearing/pulley that runs on rails or tracks instead of flat surfaces. What makes it useful is its small size, strong construction, and the V-groove that helps it ride reliably without slipping off. The bearings are double-shielded (“ZZ”), which keeps grease in and dirt/dust out — that means less maintenance and longer service life. It’s especially suited for cable‐guides, sliding motion, or where you need a lightweight, low-profile wheel turning on a rail. A great pick for hobbyist CNC, light automation, or any project needing guided movement in tight spaces.

The U604ZZ is a small, metal U-groove guide wheel / pulley that incorporates a sealed deep-groove ball bearing. It’s designed for situations where you need smooth, guided rolling along a rail or track—not a typical V-wheel system, but similar in concept. Because the bearing is sealed, it’s more resistant to dust and debris, which helps with lifespan and consistent movement.

The POM Delrin V-Wheel is designed for use with 20-series V-Slot aluminium profiles, such as 2020, 2040, 2060, and 2080. It features an integrated MR105ZZ ball bearing with a 5mm inner diameter, ensuring smooth and precise linear motion. The POM (Delrin) material offers low friction, high wear resistance, and excellent dimensional stability, making it ideal for high-precision applications.

If you’ve been using Delrin V-wheels for your CNC or 3D printer’s V-Slot rail, you might have noticed they flex/deform under load, especially in the gantry or router where there’s a lot of weight or force. The XTREME Solid V-Wheel is meant to solve that. It’s made of hard polycarbonate material (clear plastic), which is much stiffer and more resistant to compression than the typical Delrin wheels. BDTronics describes it as “heavy duty,” and they tested it with an 11 kg load with no noticeable deflection. It’s a wheel + bearing kit: the wheel + sealed 625-2RS bearings, etc.

The LM10UU Linear Rail Ball Bearing is engineered for precision linear motion, making it ideal for applications in 3D printers, CNC machines, and various automation systems. Designed to deliver smooth and accurate motion, it’s perfect for projects that require dependable and low-friction linear guidance.

The SBR12UU Linear Motion Adjustable Ball Bearing Sliding Block is designed for precise linear motion applications, offering smooth, low-friction movement with high rigidity and durability. Made from aluminum alloy, this bearing is ideal for use in various industries, including electronic equipment, CNC machinery, printing machines, food processing, packaging, medical machinery, and more.

The SC12UU Linear Motion Ball Bearing Slide is designed for precision linear motion applications requiring smooth and low-friction movement. With an inner diameter of 12mm, it's compatible with 12mm rods, making it ideal for use in 3D printers, CNC machines, and other automation systems.

The SC10UU Linear Motion Ball Bearing Slide is designed for smooth and precise linear motion along a 10mm diameter shaft. Encased in a durable aluminum housing, this bearing is ideal for applications requiring low friction and high rigidity, such as 3D printers, CNC machines, and automation systems.

The LM20UU Linear Rail Ball Bearing is a high-precision component designed for smooth and low-friction linear motion. With a 20mm inner diameter, 32mm outer diameter, and 42mm length, it's ideal for applications requiring precise movement along a 20mm shaft, such as 3D printers, CNC machines, and robotics.

The LM25UU Linear Rail Ball Bearing is a high-precision component designed for smooth and low-friction linear motion. With a 25mm inner diameter, 40mm outer diameter, and 59mm length, it's ideal for applications requiring precise movement along a 25mm shaft, such as 3D printers, CNC machines, and robotics.

The LM16UU Linear Rail Ball Bearing is a high-precision component designed for smooth and low-friction linear motion. With a 16mm inner diameter, 28mm outer diameter, and 37mm length, it's ideal for applications requiring precise movement along a 16mm shaft, such as 3D printers, CNC machines, and robotics.

The LM12UU Linear Rail Ball Bearing is a high-precision component designed for smooth and low-friction linear motion. With a 12mm inner diameter, 21mm outer diameter, and 30mm length, it's ideal for applications requiring precise movement along a 12mm shaft, such as 3D printers, CNC machines, and robotics.

The SC12LUU Extra Long Linear Motion Block is a precision component designed for smooth, stable linear motion on 12 mm shaft/rod systems. With its long-type build, it offers enhanced rigidity and less wobble, making it ideal for applications demanding high precision—like CNC machines, 3D printers, robotics, and automated tools. It’s engineered to handle continuous motion with minimal friction and wear, while being fairly easy to install and maintain.

The SC10LUU Linear Bearing Pillow Block Long is a rugged, precision part designed mainly for use in 3D printers, CNC machines, robotics, and other projects where controlled, straight-line motion is required. It consists of an aluminum housing fitted with two LM10UU linear bearings, allowing a 10 mm shaft to slide smoothly. The extra-length (“long”) design gives more support and stability compared to shorter blocks. It’s especially useful when you need reduced play, better rigidity, and smoother motion over longer spans.

The SC16LUU Linear Motion Ball Bearing Slide Unit is a high-precision component designed for smooth and efficient linear motion along 16mm shafts. With its durable aluminum housing and recirculating ball design, it ensures low friction, high rigidity, and long service life. This bearing is ideal for applications in CNC machines, 3D printers, and other precision equipment requiring stable and accurate movement.

The KFL08 Pillow Block Ball Bearing is a compact and durable component designed to support 8mm shafts in various mechanical applications. Its zinc alloy housing ensures strength and corrosion resistance, making it suitable for environments where durability is essential. The bearing features a self-aligning design, allowing for easy installation and maintenance.

The KP08 Pillow Block Mounted Ball Bearing is a compact and durable component designed to support 8mm shafts in various mechanical applications. Its zinc alloy housing ensures strength and corrosion resistance, making it suitable for environments where durability is essential. The bearing features a self-aligning design, allowing for easy installation and maintenance.

The LM8UU Linear Rail Ball Bearing is a high-precision, durable component designed for smooth and efficient linear motion in various applications. With an 8mm inner diameter, 15mm outer diameter, and 24mm length, it offers enhanced stability and load distribution compared to standard bearings. This bearing is ideal for use in 3D printers, CNC machines, and other linear motion systems requiring greater rigidity and smoother movement.