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Drawing of 6203 ZZC3: ⌀17 × ⌀40 × 12 mm6203 ZZC3ZZ
Fig. 1: 6203 ZZC3, 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 6203 ZZC3

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

Bearing Koyo 6203 ZZC3

€2.13per piece
In stock: 60 pcs
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Specifications

Manufacturer number
ISO designation
Equivalents
4 exact, 75 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
12 mm
Width BRing width. Source: supplier data
Seal
ZZshields, both sides
Clearance
C3
C0
4.8 kN
Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
m
0.065 kg
MassWeight of the product. Source: supplier data
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Equivalents

the same size 17 × 40 × 12 from other brands

79 products
Series illustration (not a photo of this item): 6203 ZZC3
You are viewingKoyo 6203 ZZC3
€2.13baseline for the price comparison

Everything the number specifies matches: series 62, 17 × 40 × 12 mm, metal shields on both sides, clearance C3, 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 (€2.13).
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Details

what this bearing is, questions

About the bearing

D 40d 17B 12
d×D×Bsize 17 × 40 × 12mm
C0static 4.8kN
mweight 0.065kg

Deep groove ball bearing 6203-ZZ C3, design ZZ: metal shields on both sides.

C₀, m: Koyo 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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