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Drawing of 51128: ⌀140 × ⌀180 × 31 mm⌀180⌀1403151128
Fig. 1: 51128, 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 51128

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

Bearing CT 51128

€12.89per piece
In stock: 132 pcs

Specifications

Manufacturer number
GOST number
d
140 mm
Bore diameter dBearing bore = shaft diameter. Source: two supplier sources
D
180 mm
Outside diameter DOutside diameter = housing bore. Source: two supplier sources
H
31 mm
Height HMounting height: the distance between the seating faces of the washers of an assembled thrust bearing (ISO 104). Source: two supplier sources
T
31 mm
Total width TOverall width of an assembled tapered roller bearing. Source: supplier data
C
111 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
440 kN
Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
m
2.05 kg
MassWeight of the product. Source: supplier data
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Details

what this bearing is, questions

About the bearing

d×D×Tsize 140 × 180 × 31mm
Cdynamic 111kN
C0static 440kN
mweight 2.05kg

Thrust ball bearing 51128. Under GOST the same bearing is designated 8128.

C, C₀, m: CT data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

Frequently asked questions

What is 8128?

It is the same bearing under GOST 3189-89: 8128 corresponds to the ISO base 51128. Size 140 × 180 × 31 mm, a full equivalent of 51128.

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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