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

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

Bearing Z&S 6309

Price on request
Available to order

Specifications

Manufacturer number
GOST number
OEM number
619.50.040
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
open, no protection
Clearance
normal clearance
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
C0
31.5 kN
Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
Limiting speed
8,200 rpm
Limiting speedMechanical limit; depends on the seal (SKF 6200: 36,000 open, 17,000 with 2RSH). Source: supplier data
m
0.86 kg
MassWeight of the product. Source: supplier data
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Equivalents

the same size 45 × 100 × 25 from other brands

63 products
Photo: 6309
You are viewingZ&S 6309

Everything the number specifies matches: series 63, 45 × 100 × 25 mm, open, no protection, normal clearance, ordinary steel, design without special letters. The codes in the number are read against the Z&S catalogue.

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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
C0static 31.5kN
mweight 0.86kg

Deep groove ball bearing 6309. Under GOST the same bearing is designated 309.

C, C₀, m and limiting speed 8,200 rpm: Z&S data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

Frequently asked questions

What is 309?

It is the same bearing under GOST 3189-89: 309 corresponds to the ISO base 6309. Size 45 × 100 × 25 mm, a full equivalent of 6309.

Will 6309 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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