ZIBOO
ZIBOO NTN 6917 ZZ Deep Groove Ball Bearings 85x120x18mm
Deep groove ball bearing sized 85x120x18mm, supplied as a single pack for electrician test equipment
- TypeTest Equipment
- Color/FinishRed
- Item Count1 pack
- Selling UnitBox
- Parts3 Years
- Labor1 Year
- Precision rotation with 85mm inner diameter
- High load capacity via 120mm outer dimension
- Compact 18mm width fits tight assemblies
- Shielded ZZ design resists contamination
- Test equipment grade reliability for electricians
NTN 6917 ZZ Deep Groove Ball Bearings
The NTN 6917 ZZ deep groove ball bearings are precision rolling-element components designed for electricians and maintenance technicians who need reliable rotational motion in motor shafts, gearboxes or conveyor rollers. Each box contains a single pack finished in red, ready for immediate workshop use.
85x120x18mm bore, outer diameter and width
The decisive specification is the 85 millimetre bore, 120 millimetre outer diameter and 18 millimetre width; these three dimensions must match the housing and shaft exactly or the bearing will not seat correctly. No other size in the 6917 series will interchange, so verify the measurements before ordering.
Press-fit installation with standard tools
Installation is a straightforward press fit onto the shaft and into the housing using a bearing driver or soft-faced mallet; the ZZ metal shields stay in place during fitting. The most common error is applying force to the outer ring when mounting on the shaft, which damages the raceways and leads to premature noise or seizure.
Highlights
- Precision rotation with 85mm inner diameter
- High load capacity via 120mm outer dimension
- Compact 18mm width fits tight assemblies
- Shielded ZZ design resists contamination
- Test equipment grade reliability for electricians
Specifications
| Brand | ZIBOO |
|---|---|
| Model | NTN 6917 ZZ |
| Type | Test Equipment |
| Color/Finish | Red |
| Item Count | 1 pack |
| Selling Unit | Box |
| Parts | 3 Years |
| Labor | 1 Year |
Questions about this item
How does the 85 mm bore size affect fitment on a motor shaft?
The 85 mm bore matches shafts machined to that exact diameter, so the bearing seats directly without adapters or shims.
What does the ZZ suffix mean for sealing and speed limits?
ZZ indicates metal shields on both sides that retain grease and exclude coarse debris while allowing higher rotational speeds than contact seals.
Will the 120 mm outside diameter and 18 mm width fit standard 6917 housing bores?
Yes, the 120 mm OD and 18 mm width conform to the 6917 series envelope, so it drops into any housing machined to that standard.
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