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Drawing of 1203 ETN9: ⌀17 × ⌀40 × 12 mm⌀40⌀17121203 ETN9
Fig. 1: 1203 ETN9, 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 1203 ETN9

Load: radial medium; axial low, on both sidesSelf-aligning ball

Bearing SKF 1203 ETN9

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Specifications

Manufacturer number
ISO designation
GOST number
Equivalents
1 exact, 6 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
Clearance
normal clearance
C
8.84 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
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Equivalents

the same size 17 × 40 × 12 from other brands

8 products
Series illustration (not a photo of this item): 1203 ETN9
You are viewingSKF 1203 ETN9

Same size, different design: the difference is written in the row.

  • Series illustration (not a photo of this item): 12031203standard designCT17 × 40 × 12254 pcs€0.43Request a quote
  • Series illustration (not a photo of this item): 12031203standard designKG17 × 40 × 12130 pcs€0.86Request a quote
  • Series illustration (not a photo of this item): 12031203standard designKoyo17 × 40 × 12available to orderon requestRequest a quote
  • Series illustration (not a photo of this item): 12031203standard designNACHI17 × 40 × 12available to orderon requestRequest a quote
  • Cross-section drawing to size: Self-aligning ball, 17 × 40 × 12 mm1203TNG N 55, TNG, groove for a snap ringNSK17 × 40 × 12available to orderon requestRequest a quote
  • Series illustration (not a photo of this item): 12031203standard designNTE17 × 40 × 12available to orderon requestRequest a quote
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Details

what this bearing is, questions

About the bearing

d×D×Bsize 17 × 40 × 12mm
Cdynamic 8.84kN

Self-aligning ball bearing 1203. Under GOST the same bearing is designated 1203.

C: SKF data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

Frequently asked questions

What is 1203?

It is the same bearing under GOST 3189-89: 1203 corresponds to the ISO base 1203. Size 17 × 40 × 12 mm, a full equivalent of 1203.

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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