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Drawing of 6801 / 61801 ZZ: ⌀12 × ⌀21 × 5 mm6801 / 61801 ZZZZ
Fig. 1: 6801 / 61801 ZZ, end view and section; rolling element geometry per the NSK catalogue. Dimensions in mm

There is no photo of this product: the drawing shows the dimensions of 6801 / 61801 ZZ

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

Bearing 6801 / 61801 ZZ

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Specifications

Manufacturer number
ISO designation
Equivalents
5 exact, 11 approximate
d
12 mm
Bore diameter dBearing bore = shaft diameter. Source: supplier data
D
21 mm
Outside diameter DOutside diameter = housing bore. Source: supplier data
B
5 mm
Width BRing width. Source: supplier data
Seal
ZZshields, both sides
Clearance
normal clearance
01

Equivalents

the same size 12 × 21 × 5 from other brands

18 products
Series illustration (not a photo of this item): 6801 / 61801 ZZ
You are viewing6801 / 61801 ZZ

Everything the number specifies matches: series 618, 12 × 21 × 5 mm, metal shields on both sides, normal clearance, ordinary steel, design without special letters.
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Details

what this bearing is, questions

About the bearing

D 21d 12B 5
d×D×Bsize 12 × 21 × 5mm

Deep groove ball bearing 61801-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.

Will 61801 ZZ C3 fit instead?

Same size, clearance greater than normal. C3 is used where the bearing runs hot or sits on the shaft with an interference fit. If the old bearing is not marked C3, take this one.

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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