Prices are in euros. The final price and delivery cost are confirmed in the quote.
Drawing of 30308: ⌀40 × ⌀90 × 25.25 mm⌀90⌀40B 23T 25.25C 20α30308
Fig. 1: 30308, end view and section; internal parts simplified per ISO 8826-1. Dimensions in mm

There is no photo of this product: the drawing shows the dimensions of 30308

Combined load at an angle (tapered, high), axial on one sideTapered roller

Bearing CT 30308

€3.28per piece
In stock: 1,172 pcs

Specifications

Manufacturer number
GOST number
d
40 mm
Bore diameter dBearing bore = shaft diameter. Source: two supplier sources
D
90 mm
Outside diameter DOutside diameter = housing bore. Source: two supplier sources
B
23 mm
Width BRing width. Source: supplier data
T
25.25 mm
Total width TOverall width of an assembled tapered roller bearing. Source: two supplier sources
Cup width C
20 mm
Cup width CWidth of the outer ring of a tapered roller bearing. Source: supplier data
C
85.8 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
95 kN
Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
m
0.72 kg
MassWeight of the product. Source: supplier data
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Equivalents

the same size 40 × 90 × 25.25 from other brands

22 products
Series illustration (not a photo of this item): 30308
You are viewingCT 30308
€3.28baseline for the price comparison

Everything the number specifies matches: series 303, 40 × 90 × 23 mm, ordinary steel, design without special letters. The codes in the number are read against the CT catalogue.

Under the price: the difference from the price of this bearing (€3.28).

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Details

what this bearing is, questions

About the bearing

d×D×Tsize 40 × 90 × 25.25mm
Cdynamic 85.8kN
C0static 95kN
mweight 0.72kg

Tapered roller bearing 30308. Under GOST the same bearing is designated 7308.

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

Frequently asked questions

What is 7308?

It is the same bearing under GOST 3189-89: 7308 corresponds to the ISO base 30308. Size 40 × 90 × 25.25 mm, a full equivalent of 30308.

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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