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Drawing of 7203 B: ⌀17 × ⌀40 × 12 mm⌀40⌀17127203 B
Fig. 1: 7203 B, 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 7203 B

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

Bearing 7203 B

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Specifications

Manufacturer number
GOST number
Equivalents
2 exact, 10 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
open, no protection
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Equivalents

the same size 17 × 40 × 12 from other brands

14 products
Series illustration (not a photo of this item): 7203 B
You are viewing7203 B

Everything the number specifies matches: series 72, 17 × 40 × 12 mm, open, no protection, B, special design.

  • Series illustration (not a photo of this item): 7203 B7203 BThis bearingno brand17 × 40 × 12available to orderon requestyou are here
  • Series illustration (not a photo of this item): 7203 B7203 BNACHI17 × 40 × 12available to orderon requestRequest a quote
02

Details

what this bearing is, questions

About the bearing

D 40d 17B 12
d×D×Bsize 17 × 40 × 12mm

Angular contact ball bearing 7203 B. Under GOST the same bearing is designated 66203.

Frequently asked questions

What is 66203?

It is the same bearing under GOST 3189-89: 66203 corresponds to the ISO base 7203 B. Size 17 × 40 × 12 mm, a full equivalent of 7203 B.

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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