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Drawing of 6309-2Z/C4: ⌀45 × ⌀100 × 25 mm6309-2Z/C42Z
Fig. 1: 6309-2Z/C4, 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 6309-2Z/C4

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

Bearing SKF 6309-2Z/C4

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Specifications

Manufacturer number
ISO designation
Equivalents
2 exact, 61 approximate
d
45 mm
Bore diameter dBearing bore = shaft diameter. Source: supplier data
D
100 mm
Outside diameter DOutside diameter = housing bore. Source: supplier data
B
25 mm
Width BRing width. Source: supplier data
Seal
2Zmetal shields on both sides
Clearance
C4
C
55.3 kN
Basic dynamic load rating CLoad for one million revolutions at 90 % reliability; the L10 life is calculated from it as (C/P)^p. ISO method, manufacturer’s figure: do not carry it over to another brand. Source: supplier data
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Equivalents

the same size 45 × 100 × 25 from other brands

63 products
Series illustration (not a photo of this item): 6309-2Z/C4
You are viewingSKF 6309-2Z/C4

Everything the number specifies matches: series 63, 45 × 100 × 25 mm, metal shields on both sides, clearance C4, ordinary steel, design without special letters. The codes in the number are read against the SKF catalogue.

  • Series illustration (not a photo of this item): 6309-2Z/C46309-2Z/C4This bearingSKF45 × 100 × 25available to orderon requestyou are here
  • Series illustration (not a photo of this item): 6309 ZZC46309 ZZC4NSK45 × 100 × 25available to orderon requestRequest a quote
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Details

what this bearing is, questions

About the bearing

D 100d 45B 25
d×D×Bsize 45 × 100 × 25mm
Cdynamic 55.3kN

Deep groove ball bearing 6309-ZZ C4, design 2Z: metal shields on both sides.

C: SKF 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.

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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