Aluminum Alloy Linear Ball Bearing Slide Block Units Lightweight housing and chromium steel bearing balls provide good abrasion resistance, high precision, and strength. Smooth movement, low friction, high rigidity, and long service life. Suitable for various electronic equipment, guide bars, drive shafts, and pillars. SBRUU series Linear Ball Bearing Slide Block Units complement linear ball bearings. Typically feature a lightweight aluminum housing for high strength and stiffness. Compact design with high load-carrying capacity; linear motion bearing units are rolling friction support elements used in linear motion mechanical parts with low friction. Designed to coordinate with linear motion shafts; recirculating balls enable unlimited stroke with low-friction movement, operating temperature up to 80°C. Ideal for applications including 3D printers and CNC machines. Product Name: Open Linear Bearing Model: SBR25UU Shaft Diameter: 25 mm Product Dimensions: 65 x 45 x 60 x 57 mm Color: Silver Material: Aluminum alloy housing + bearing steel Package Contents: 2 x Open linear bearing Note: Lighting conditions and display settings may cause slight color variation between the image and the actual product. Measurement tolerance: ±1–3 mm.