ZIBOO
ZIBOO NTN 6821 Single Row Radial Ball Bearing 105x130x13mm
Open-type radial ball bearing sized 105 by 130 by 13 millimetres for smooth rotary motion
- Precision rotation from single-row radial design
- Open construction allows easy lubrication access
- 105mm bore fits standard shaft dimensions
- 13mm width suits compact assemblies
NTN 6821 open-type radial bearing
The ZIBOO NTN 6821 is a single-row radial ball bearing built for electrician tools that require smooth rotation under moderate radial loads. Its open design allows easy lubrication access and suits assemblies where external sealing is already provided. The 105 mm bore and 130 mm outside diameter fit standard housings specified for the 6821 series. Electricians and maintenance technicians will find it a direct replacement for worn originals.
Sustained-load behaviour with open construction
Under continuous operation the open bearing runs cooler than sealed variants because fresh lubricant can be introduced and contaminants can escape. The single-row geometry distributes load evenly across the balls while the 13 mm width keeps the contact patch stable at constant speeds. Builders who need integrated seals or higher axial capacity should select a different series.
Highlights
- Precision rotation from single-row radial design
- Open construction allows easy lubrication access
- 105mm bore fits standard shaft dimensions
- 13mm width suits compact assemblies
Specifications
| Brand | ZIBOO |
|---|---|
| Model | NTN 6821 |
Questions about this item
How much heat does the NTN 6821 generate when running continuously?
As a passive mechanical bearing, the NTN 6821 produces no electrical heat; temperature rise depends on load, speed and lubrication in your application.
What shaft and housing tolerances are needed for the 105 mm bore and 130 mm outer diameter?
The NTN 6821 requires a shaft tolerance of h5 or h6 and a housing tolerance of H6 or H7 for a proper interference fit.
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