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ZEN
Drawing of 684 ZZ: ⌀4 × ⌀9 × 4 mm684 ZZZZ
Fig. 1: 684 ZZ, end view and section; internal parts simplified per ISO 8826-1. Dimensions in mm

There is no photo of this product: the drawing shows the dimensions of 684 ZZ

Load: radial medium; axial low, on both sidesDeep groove ball

Bearing ZEN 684 ZZ

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Specifications

Manufacturer number
ISO designation
Equivalents
3 exact, 0 approximate
d
4 mm
Bore diameter dBearing bore = shaft diameter. Source: supplier data
D
9 mm
Outside diameter DOutside diameter = housing bore. Source: supplier data
B
4 mm
Width BRing width. Source: supplier data
Seal
ZZshields, both sides
Clearance
normal clearance
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Equivalents

the same size 4 × 9 × 4 from other brands

3 products
Series illustration (not a photo of this item): 684 ZZ
You are viewingZEN 684 ZZ

Everything the number specifies matches: ordinary steel, design without special letters. The codes in the number are read against the ZEN catalogue.

  • Series illustration (not a photo of this item): 684 ZZ684 ZZThis bearingZEN4 × 9 × 4available to orderon requestyou are here
  • Series illustration (not a photo of this item): 684 ZZ684 ZZCT4 × 9 × 4available to order€0.20Request a quote
  • Series illustration (not a photo of this item): 684 ZZ684 ZZIBB4 × 9 × 4available to orderon requestRequest a quote
02

Details

what this bearing is, questions

About the bearing

D 9d 4B 4
d×D×Bsize 4 × 9 × 4mm

Deep groove ball bearing 684-ZZ, design ZZ: metal shields on both sides.

Frequently asked questions

How does 2RS differ from ZZ?

2RS has rubber seals that touch the inner ring and keep out dust and water better, which is the usual choice for field machinery. ZZ has metal shields that do not touch, allow higher speeds, and protect against dirt less well.

Can I fit another brand instead of this bearing?

Without checking, only an exact equivalent: the size, seal, clearance and design match according to the brand’s catalogue. Positions with the same geometry differ in seal, clearance or design, and each one says so in the equivalents block. Load ratings differ between manufacturers, so for a heavily loaded unit compare C.

How do I get a price and a lead time?

Press “Request a quote” and send the part number and quantity. We reply with the price, availability and delivery terms for your country.

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