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Red deep groove ball bearing 85x120x18mm in box

ZIBOO

ZIBOO NTN 6917 ZZ Deep Groove Ball Bearings 85x120x18mm

SKU CH-QADR-P252G

Deep groove ball bearing sized 85x120x18mm, supplied as a single pack for electrician test equipment

  • Labor warranty1 Year
  • Product typeTest Equipment
  • Color and finishRed
  • Number of items1 pack
  • Sold asBox
  • Parts warranty3 Years
  • 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.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $31.99
Cheaper than about 86% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameZIBOO
Model nameNTN 6917 ZZ
Product typeTest Equipment
Color and finishRed
In the box
Number of items1 pack

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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