Prices are in euros. The final price and delivery cost are confirmed in the quote.
Drawing of 6306: ⌀30 × ⌀72 × 19 mm6306
Fig. 1: 6306, 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 6306

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

Bearing Koyo 6306

€5.39per piece
In stock: 40 pcs

Specifications

Manufacturer number
GOST number
d
30 mm
Bore diameter dBearing bore = shaft diameter. Source: supplier data
D
72 mm
Outside diameter DOutside diameter = housing bore. Source: supplier data
B
19 mm
Width BRing width. Source: supplier data
Seal
open, no protection
Clearance
normal clearance
C
33.3 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
15 kN
Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
m
0.346 kg
MassWeight of the product. Source: supplier data
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Equivalents

the same size 30 × 72 × 19 from other brands

82 products
Series illustration (not a photo of this item): 6306
You are viewingKoyo 6306
€5.39baseline for the price comparison

Everything the number specifies matches: series 63, 30 × 72 × 19 mm, open, no protection, normal clearance, ordinary steel, design without special letters. The codes in the number are read against the Koyo catalogue.

Under the price: the difference from the price of this bearing (€5.39).

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Details

what this bearing is, questions

About the bearing

D 72d 30B 19
d×D×Bsize 30 × 72 × 19mm
Cdynamic 33.3kN
C0static 15kN
mweight 0.346kg

Deep groove ball bearing 6306. Under GOST the same bearing is designated 306.

C, C₀, m: Koyo data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

Frequently asked questions

What is 306?

It is the same bearing under GOST 3189-89: 306 corresponds to the ISO base 6306. Size 30 × 72 × 19 mm, a full equivalent of 6306.

Will 6306 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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