Prices are in euros. The final price and delivery cost are confirmed in the quote.
Drawing of 6203: ⌀17 × ⌀40 × 12 mm6203
Fig. 1: 6203, 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

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

Bearing Z&S 6203

€0.43per piece
Available to orderThe manager confirms the lead time

Specifications

Manufacturer number
GOST number
d
17 mm
Bore diameter dBearing bore = shaft diameter. Source: two supplier sources
D
40 mm
Outside diameter DOutside diameter = housing bore. Source: two supplier sources
B
12 mm
Width BRing width. Source: two supplier sources
Seal
open, no protection
Clearance
normal clearance
C
9.95 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
4.75 kN
Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
Limiting speed
21,000 rpm
Limiting speedMechanical limit; depends on the seal (SKF 6200: 36,000 open, 17,000 with 2RSH). Source: supplier data
m
0.07 kg
MassWeight of the product. Source: supplier data
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Equivalents

the same size 17 × 40 × 12 from other brands

79 products
Photo: 6203
You are viewingZ&S 6203
€0.43baseline for the price comparison

Everything the number specifies matches: series 62, 17 × 40 × 12 mm, open, no protection, normal clearance, ordinary steel, design without special letters. The codes in the number are read against the Z&S catalogue.

Under the price: the difference from the price of this bearing (€0.43).

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Details

what this bearing is, questions

About the bearing

D 40d 17B 12
d×D×Bsize 17 × 40 × 12mm
Cdynamic 9.95kN
C0static 4.75kN
mweight 0.07kg

Deep groove ball bearing 6203. Under GOST the same bearing is designated 203.

C, C₀, m and limiting speed 21,000 rpm: Z&S data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

Frequently asked questions

What is 203?

It is the same bearing under GOST 3189-89: 203 corresponds to the ISO base 6203. Size 17 × 40 × 12 mm, a full equivalent of 6203.

Will 6203 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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