+380 50 364 66 46 Mon–Fri 8:00–17:00 Kyiv time Wishlist0 Compare0
Prices are in euros. The final price and delivery cost are confirmed in the quote.
Drawing of 6203 ZZ: ⌀17 × ⌀40 × 12 mm6203 ZZZZ
Fig. 1: 6203 ZZ, 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 ZZ

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

Bearing Koyo 6203 ZZ

€2.13per piece
In stock: 65 pcs
Request a quote

Specifications

Manufacturer number
ISO designation
GOST number
Equivalents
10 exact, 67 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
normal clearance
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
01

Equivalents

the same size 17 × 40 × 12 from other brands

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

Everything the number specifies matches: series 62, 17 × 40 × 12 mm, metal shields on both sides, normal clearance, 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).
02

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, design ZZ: metal shields on both sides. Under GOST the same bearing is designated 80203.

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.

What is 80203?

It is the same bearing under GOST 3189-89: 8 — metal shields on both sides, 0203 corresponds to the ISO base 6203. Size 17 × 40 × 12 mm, a full equivalent of 6203-ZZ.

Will 6203 ZZ 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.

03

Reviews

No reviews yet