Simplified drawing of the bearing per ISO 8826-1, dimensions of 1780/1729: ⌀25.4 × ⌀56.896 × 19.837 mm⌀56.896⌀25.419.8371780/1729
Fig. 1: 1780/1729, simplified drawing per ISO 8826-1. Dimensions in mm

There is no photo of this product: the drawing shows the dimensions of 1780/1729

Combined load at an angle (tapered, high), axial on one sideTapered roller

Bearing Z&S 1780/1729

Price on request
Available to order

Specifications

Manufacturer number
ISO designation
d
25.4 mm
Bore diameter dBearing bore = shaft diameter. Source: two supplier sources
D
56.896 mm
Outside diameter DOutside diameter = housing bore. Source: two supplier sources
B
19.837 mm
Width BRing width. Source: supplier data
Cup width C
15.875 mm
Cup width CWidth of the outer ring of a tapered roller bearing. Source: supplier data
C
44.9 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
52.9 kN
Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
Limiting speed
9,600 rpm
Limiting speedMechanical limit; depends on the seal (SKF 6200: 36,000 open, 17,000 with 2RSH). Source: supplier data
m
0.4 kg
MassWeight of the product. Source: supplier data
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Details

what this bearing is, questions

About the bearing

d×D×Bsize 25.4 × 56.896 × 19.837mm
Cdynamic 44.9kN
C0static 52.9kN
mweight 0.4kg

Tapered roller bearing 1780.

C, C₀, m and limiting speed 9,600 rpm: Z&S data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

Frequently asked questions

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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