Prices are in euros. The final price and delivery cost are confirmed in the quote.
Drawing of 30304 A: ⌀20 × ⌀52 × 16.25 mm⌀52⌀20T 16.25C 13α30304 A
Fig. 1: 30304 A, end view and section; internal parts simplified per ISO 8826-1. Dimensions in mm
Bearing Z&S 30304 A — photo 1
Bearing Z&S 30304 A — photo 2
Bearing Z&S 30304 A — photo 3
Combined load at an angle (tapered, high), axial on one sideTapered roller

Bearing Z&S 30304 A

€2.48per piece
Available to orderThe manager confirms the lead time

Specifications

Manufacturer number
ISO designation
GOST number
OEM number
20 KB 03, 555.17.230
d
20 mm
Bore diameter dBearing bore = shaft diameter. Source: two supplier sources
D
52 mm
Outside diameter DOutside diameter = housing bore. Source: two supplier sources
B
16 mm
Width BRing width. Source: supplier data
T
16.25 mm
Total width TOverall width of an assembled tapered roller bearing. Source: two supplier sources
Cup width C
13 mm
Cup width CWidth of the outer ring of a tapered roller bearing. Source: supplier data
C
34.1 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
32.5 kN
Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
Limiting speed
11,000 rpm
Limiting speedMechanical limit; depends on the seal (SKF 6200: 36,000 open, 17,000 with 2RSH). Source: supplier data
m
0.17 kg
MassWeight of the product. Source: supplier data
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Equivalents

the same size 20 × 52 × 16.25 from other brands

11 products
Photo: 30304 A
You are viewingZ&S 30304 A
€2.48baseline for the price comparison

Everything the number specifies matches: series 303, 20 × 52 mm, special design. The codes in the number are read against the Z&S catalogue.

  • Photo: 30304 A30304 AThis bearingZ&S20 × 52 × ?available to order€2.48you are here
  • Photo: 30304 A30304 AKLT20 × 52 × ?available to order€1.30−€1.18Request a quote
  • Series illustration (not a photo of this item): 30304 A30304 AFAG20 × 52 × 16available to orderon requestRequest a quote

Under the price: the difference from the price of this bearing (€2.48).

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Details

what this bearing is, questions

About the bearing

d×D×Tsize 20 × 52 × 16.25mm
Cdynamic 34.1kN
C0static 32.5kN
mweight 0.17kg

Tapered roller bearing 30304. Under GOST the same bearing is designated 7304.

C, C₀, m and limiting speed 11,000 rpm: Z&S data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

Frequently asked questions

What is 7304?

It is the same bearing under GOST 3189-89: 7304 corresponds to the ISO base 30304. Size 20 × 52 × 16.25 mm, a full equivalent of 30304.

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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