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Drawing of 3304-2RSR: ⌀20 × ⌀52 × 22.2 mm⌀52⌀2022.23304-2RSR2RSR
Fig. 1: 3304-2RSR, 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 3304 2RSR

Combined load at an angle (angular contact), axial on one sideAngular contact ball

Bearing NTE 3304 2RSR

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Specifications

Manufacturer number
ISO designation
Equivalents
6 exact, 17 approximate
d
20 mm
Bore diameter dBearing bore = shaft diameter. Source: supplier data
D
52 mm
Outside diameter DOutside diameter = housing bore. Source: supplier data
B
22.2 mm
Width BRing width. Source: supplier data
Seal
2RSRcontact seals on both sides
C
23.6 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 20 × 52 × 22.2 from other brands

25 products
Series illustration (not a photo of this item): 3304-2RSR
You are viewingNTE 3304 2RSR

Everything the number specifies matches: series 33, 20 × 52 × 22.2 mm, contact seals on both sides, ordinary steel, design without special letters; any contact angle. The codes in the number are read against the NTE catalogue.
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Details

what this bearing is, questions

About the bearing

D 52d 20B 22.2
d×D×Bsize 20 × 52 × 22.2mm
Cdynamic 23.6kN

Angular contact ball bearing 3304-2RS, design 2RSR: contact seals on both sides.

C: NTE 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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