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Drawing of 6309 ZZ: ⌀45 × ⌀100 × 25 mm6309 ZZZZ
Fig. 1: 6309 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 6309 ZZ

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

Bearing SNR 6309 ZZ

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Specifications

Manufacturer number
ISO designation
GOST number
Equivalents
7 exact, 56 approximate
d
45 mm
Bore diameter dBearing bore = shaft diameter. Source: two supplier sources
D
100 mm
Outside diameter DOutside diameter = housing bore. Source: two supplier sources
B
25 mm
Width BRing width. Source: two supplier sources
Seal
ZZshields, both sides
Clearance
normal clearance
m
0.83 kg
MassWeight of the product. Source: supplier data
01

Equivalents

the same size 45 × 100 × 25 from other brands

63 products
Series illustration (not a photo of this item): 6309 ZZ
You are viewingNTN/SNR 6309 ZZ

Everything the number specifies matches: series 63, 45 × 100 × 25 mm, metal shields on both sides, normal clearance, ordinary steel, design without special letters. The codes in the number are read against the NTN/SNR catalogue.
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Details

what this bearing is, questions

About the bearing

D 100d 45B 25
d×D×Bsize 45 × 100 × 25mm
mweight 0.83kg

Deep groove ball bearing 6309-ZZ, design ZZ: metal shields on both sides. Under GOST the same bearing is designated 80309.

M: NTN/SNR data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

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.

What is 80309?

It is the same bearing under GOST 3189-89: 8 — metal shields on both sides, 0309 corresponds to the ISO base 6309. Size 45 × 100 × 25 mm, a full equivalent of 6309-ZZ.

Will 6309 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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