626ZZ Deep Groove Ball Bearing

The 626ZZ Deep Groove Ball Bearing is a high-carbon steel rotary ball bearing with 6mm inner diameter, 19mm outer diameter, and 6mm thickness, fitted with double metal ZZ shields on both faces, suited for light mechanical loads in 3D printers, CNC machines, and robotics. This ball bearing is a rotary bearing — fundamentally different from the LM6UU linear ball bushing covered separately — it supports a rotating shaft radially, allowing the shaft to spin freely with minimal friction while the bearing outer race is fixed in a housing or bracket.

The 626ZZ deep groove ball bearing’s ZZ designation indicates double metal shields on both sides of the bearing race — these shields prevent dust, swarf, and debris from entering the ball race without adding the rotational friction of rubber seals (designated 2RS). The ZZ metal shield design allows higher maximum RPM than rubber-sealed equivalents, making it preferred for 3D printer idler pulleys, CNC router spindle support, and other higher-speed rotary applications. The deep groove profile of this 626zz bearing allows it to handle both radial loads and moderate axial (thrust) loads in the same bearing, unlike shallow groove bearings that handle radial loads only.

One practical trade-off: ZZ metal shields provide less contamination protection than 2RS rubber seals in dusty environments — builders using this ball bearing for 3d printer in enclosed clean environments benefit from the lower drag, but exposed CNC or workshop builds may prefer rubber-sealed equivalents. Available from StemVolt, offering quality robotics parts and DIY kits at competitive prices. This 626ZZ deep groove ball bearing is ideal for DIY projects, robotics applications and STEM models.

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• Checkout Metal Robotic Arm Gripper

Features:

• 626ZZ standard — 6mm bore, 19mm OD, 6mm thick rotary bearing
• Double ZZ metal shield — lower friction than rubber seals at speed
• Deep groove handles both radial and light axial thrust loads
• High-carbon steel for wear resistance in light mechanical builds
• Suits 3D printer idler pulleys, CNC spindle, robot shaft support

Technical Specifications:

Applications:

• Ball Bearing used for 3D printer idler pulley rotary shaft build
• College project uses deep groove ball bearing for radial load demo
• India CNC uses 626zz bearing for spindle shaft support build
• Robot uses ball bearing for 3d printer compatible wheel shaft
• Maker uses bearing for cnc machine for light load axis support

Package Includes:

• 1 × 626ZZ deep groove ball bearing