MR148 Single Row Thin Wall Miniature Deep Groove Ball Bearing Open Type 8x14x3.5mm High Speed Micro Motor Precision Equipment

1. Product Overview
The MR148 thin-wall miniature deep groove ball bearing is open-type without seals, standard metric micro size 8×14×3.5mm. It features ultra-light weight, ultra-low friction and super high limiting speed, bears radial load and slight bidirectional axial load, widely matched to drone motors, miniature stepping motors, optical precision instruments and small electronic rotary components.
👉 Get a quote within 24 hours for your project

👉 Full technical datasheet and installation drawings available upon request

• Ultra-thin wall compact design, ultra-light weight, perfect for narrow small installation space
• Open structure reduces rotation resistance, supports ultra-high speed continuous operation
• Precision superfinished raceway and tiny steel balls deliver quiet, stable low-vibration rotation
• High hardness chrome steel improves wear resistance for long-term micro device operation
• Multiple variants customizable: MR148ZZ double metal shield, MR148-2RS rubber sealed, MC3 clearance
• Small clearance tolerance, ABEC-1/ABEC-3 precision grades optional for optical equipment

👉 High-speed lightweight micro bearing solution for precision mini machinery

This thin-wall miniature bearing is widely used in:

• Drone brushless motors, micro stepping motors and model power equipment
• Optical lens adjustment mechanisms, lab testing precision instruments
• 3C electronic products, printer rollers, miniature cooling fans
• Small medical devices, miniature automation and tiny transmission assemblies

👉 Cost-effective high-speed thin wall micro bearing for precision mini equipment

• 25+ years experience in miniature thin-wall ball bearing manufacturing
• Exported to 50+ countries worldwide
• Rich OEM experience for MR series open/ZZ/2RS sealed micro bearings
• Strict dimensional, noise and high-speed durability inspection before shipment
• Fast professional technical reply within 24 hours
• Stable bulk supply for long-term drone and precision instrument factory cooperation

👉 We focus on stable micro precision quality and long‑term partnership

• Raw bearing steel incoming hardness inspection
• Ultra-precision superfinishing for micro raceway and tiny steel balls
• Standard quenching & tempering heat treatment for uniform hardness
• High-speed rotation noise, clearance grouping and load durability testing
• Full micro dimensional tolerance recheck before anti-rust packaging delivery

👉 Consistent ultra-high-speed low-noise performance guaranteed for every miniature bearing