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Simplified drawing of the bearing per ISO 8826-1, dimensions of 5203 2RS: ⌀17 × ⌀40 × 17.5 mm⌀40⌀1717.55203 2RS2RS
Fig. 1: 5203 2RS, simplified drawing per ISO 8826-1. Dimensions in mm

There is no photo of this product: the drawing shows the dimensions of 5203 2RS

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

Bearing CT 5203 2RS

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Specifications

Manufacturer number
ISO designation
Equivalents
2 exact, 30 approximate
d
17 mm
Bore diameter dBearing bore = shaft diameter. Source: supplier data
D
40 mm
Outside diameter DOutside diameter = housing bore. Source: supplier data
B
17.5 mm
Width BRing width. Source: supplier data
Seal
2RSrubber, both sides
Clearance
normal clearance
C
14.3 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
8.8 kN
Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
m
0.096 kg
MassWeight of the product. Source: supplier data
01

Equivalents

the same size 17 × 40 × 17.5 from other brands

36 products
Cross-section drawing to size: Deep groove ball, 17 × 40 × 17.5 mm
You are viewingCT 5203 2RS

Everything the number specifies matches: series 52, 17 × 40 × 17.5 mm, contact seals on both sides, ordinary steel, design without special letters; any contact angle. The codes in the number are read against the CT catalogue.

  • Cross-section drawing to size: Deep groove ball, 17 × 40 × 17.5 mm5203 2RSThis bearingCT17 × 40 × 17.5available to orderon requestyou are here
  • Cross-section drawing to size: Deep groove ball, 17 × 40 × 17.5 mm5203 2RSKG17 × 40 × 17.5available to orderon requestRequest a quote
02

Details

what this bearing is, questions

About the bearing

D 40d 17B 17.5
d×D×Bsize 17 × 40 × 17.5mm
Cdynamic 14.3kN
C0static 8.8kN
mweight 0.096kg

Deep groove ball bearing 5203-2RS, design 2RS: contact seals on both sides.

C, C₀, m: CT 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.

Will 5203 2RS 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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