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Drawing of 51103: ⌀17 × ⌀30 × 9 mm⌀30⌀17951103
Fig. 1: 51103, 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 51103

Load: no radial load; axial medium, on one sideThrust ball

Bearing Z&S 51103

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Specifications

Manufacturer number
GOST number
Equivalents
7 exact, 2 approximate
d
17 mm
Bore diameter dBearing bore = shaft diameter. Source: two supplier sources
D
30 mm
Outside diameter DOutside diameter = housing bore. Source: two supplier sources
H
9 mm
Height HMounting height: the distance between the seating faces of the washers of an assembled thrust bearing (ISO 104). Source: supplier data
m
0.025 kg
MassWeight of the product. Source: supplier data
01

Equivalents

the same size 17 × 30 × 9 from other brands

11 products
Photo: 51103
You are viewingZ&S 51103

Everything the number specifies matches: series 511, 17 × 30 × 9 mm, ordinary steel, design without special letters. The codes in the number are read against the Z&S catalogue.
02

Details

what this bearing is, questions

About the bearing

d×D×Hsize 17 × 30 × 9mm
mweight 0.025kg

Thrust ball bearing 51103. Under GOST the same bearing is designated 8103.

M: Z&S data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

Frequently asked questions

What is 8103?

It is the same bearing under GOST 3189-89: 8103 corresponds to the ISO base 51103. Size 17 × 30 × 9 mm, a full equivalent of 51103.

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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