10PCS L1150ZZY04 5x11x4 Single Row Deep Groove Ball Bearings Double Shielded This pack provides ten identical deep groove ball bearings with a 5 mm bore, 11 mm outer diameter, and 4 mm width. The bearings are single row and double shielded (ZZ), designed for compact applications where space is at a and protection from dust and moisture is important. Key benefits Double shielded protection: shields on both sides help keep dirt out and retain lubricant, reducing maintenance needs in challenging environments. Compact footprint: 5x11x4 mm size fits tight spaces and small assemblies without sacrificing performance. Low friction, smooth operation: deep groove ball bearing design offers reliable, efficient rotation with minimal play and noise. Versatile radial support: designed for loads primarily in the radial direction, suitable for applications where precision and consistency are important. Easy integration: standardized dimensions and shielded construction simplify installation in hobbyist and lightindustrial projects. Key attributes Configuration: single row deep groove ball bearing Bore (inner diameter): 5 mm Outer diameter: 11 mm Width: 4 mm Shielding: double shielded (ZZ) Type: deep groove ball bearing Quantity: 10 pieces per pack Model: L1150ZZY04 Specifications at a glance Size: 5 x 11 x 4 mm Bearing type: deep groove, single row Shielding: double (ZZ) Mounting direction: radial Material: standard deep groove bearing construction (not specified by listing) Compatible use cases Small electric motors and gear assemblies that use 5 mm shafts Compact robotic joints, actuators, and lightweight motion systems 3D printer components such as hotend assemblies, extruder mechanisms, or small axis bearings Miniature precision instruments and other tightspace applications requiring reliable radial support Notes on installation and use Verify shaft and housing tolerances align with a 5 mm bore and 11 mm outer diameter Ensure proper seating and alignment to avoid uneven load or misalignment Doubleshielded design helps resist contamination but routine inspection is advised in dusty or humid environments This description preserves the product's brand, model, and features (L1150ZZY04, 5x11x4, single row deep groove ball bearings, double shielded) while presenting clear, customerfriendly details and practical application guidance.