ISO 104 52400 Series Double Direction Thrust Ball Bearings Specification
What ISO 104 fixes, what it deliberately leaves to another document, its equivalents, and the dimensional table.
ISO 104 fixes the boundary dimensions of thrust bearings: the shaft washer bore d, the housing washer outside diameter D and the assembled height H — the dimension the shoulder spacing has to be machined to. Double-direction bearings add the second bore d2 for the centre washer.
Standard
ISO 104
Covers
Boundary dimensions of thrust bearings
Does not fix
It does not rate the bearing (ISO 281 for the dynamic rating, ISO 76 for the static one), and it says nothing about the minimum axial load a thrust bearing needs in order to keep its rolling elements running rather than sliding.
Equivalents
DIN 711 and DIN 715 cover single and double direction thrust ball bearings, DIN 722 and DIN 728 the roller types; GB/T 301 is the Chinese equivalent for thrust ball bearings.
Product
52400 Series Double Direction Thrust Ball Bearings
Governing standards
ISO 104 / DIN 715 / GB/T 301
Equivalence between the ISO, DIN and GB/T documents is dimensional: a bearing made to either mounts in the same seat. It is not an equivalence of load rating, tolerance class or internal clearance, each of which is fixed by a separate standard and declared separately.
ISO 104 covers boundary dimensions of thrust bearings. This page sets out what the standard fixes for 52400 series double direction thrust ball bearings, what it deliberately leaves to other documents, its national equivalents, and the dimensional table supplied against it.
ISO 104 — Scope
ISO 104 fixes the boundary dimensions of thrust bearings: the shaft washer bore d, the housing washer outside diameter D and the assembled height H — the dimension the shoulder spacing has to be machined to. Double-direction bearings add the second bore d2 for the centre washer.
What ISO 104 Does Not Fix
It does not rate the bearing (ISO 281 for the dynamic rating, ISO 76 for the static one), and it says nothing about the minimum axial load a thrust bearing needs in order to keep its rolling elements running rather than sliding.
This division of labour is the thing to carry away from any bearing standard. A boundary dimension standard makes bearings interchangeable; it does not make them equivalent. Two bearings of the same designation from different makers mount in the same seat and are not required to have the same load rating, the same internal design, the same cage or the same speed limit.
Dimensions Supplied to ISO 104
Designation
Bore d (mm)
Bore d2 (mm)
Outer diameter D (mm)
Height H (mm)
Chamfer r min (mm)
52405
15
25
60
45
1
52406
20
30
70
52
1
52407
25
35
80
59
1.1
52408
30
40
90
65
1.1
52409
35
45
100
72
1.1
52410
40
50
110
78
1.5
52411
45
55
120
87
1.5
52412
50
60
130
93
1.5
52413
50
65
140
101
2
52414
55
70
150
107
2
52415
60
75
160
115
2
52416
65
80
170
120
2.1
52417
65
85
180
128
2.1
52418
70
90
190
135
2.1
52420
80
100
210
150
3
Catalog Products Governed by ISO 104
ISO 104 governs more than this one series. In this catalog it applies to:
ISO 104 is the international reference and the right one to cite on a new drawing or a purchase specification. Adding the national equivalents alongside it costs nothing and makes the requirement legible to a supplier working to DIN or to GB/T.
Other ways to specify the 52400 Series Double Direction Thrust Ball Bearings
The same part is also governed by GB/T 301, and where two standards cover one dimension they agree — the numbers are the same, the document is not.
Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the designation snaps the other fields to that size's standard values; you can then override any individual value.
Sends the selected values to the quote form below.
Our facility
Held in production, not just on paper
The tolerances above are decided on the grinding and superfinishing lines in our own plant, and gauged on every ring rather than on a sample. A dimension is only worth quoting if it survives the process that produces it.
Request a Quote
The form below follows the current technical drawing configuration. Change the drawing values above and the request details update automatically.
Dimensions & Specifications (ISO 104 / DIN 715 / GB/T 301)
Designation
Bore d (mm)
Bore d2 (mm)
Outer diameter D (mm)
Height H (mm)
Chamfer r min (mm)
52405
15
25
60
45
1
52406
20
30
70
52
1
52407
25
35
80
59
1.1
52408
30
40
90
65
1.1
52409
35
45
100
72
1.1
52410
40
50
110
78
1.5
52411
45
55
120
87
1.5
52412
50
60
130
93
1.5
52413
50
65
140
101
2
52414
55
70
150
107
2
52415
60
75
160
115
2
52416
65
80
170
120
2.1
52417
65
85
180
128
2.1
52418
70
90
190
135
2.1
52420
80
100
210
150
3
Video: ISO 104 52400 Series Double Direction Thrust Ball Bearings Specification
Third-party video, selected automatically for this topic. It is not produced by Bushing Bearings and is not a specification source — use the tables on this page for dimensional data.
Frequently Asked Questions
What does ISO 104 specify?
ISO 104 fixes the boundary dimensions of thrust bearings: the shaft washer bore d, the housing washer outside diameter D and the assembled height H — the dimension the shoulder spacing has to be machined to. Double-direction bearings add the second bore d2 for the centre washer.
What does ISO 104 not cover?
It does not rate the bearing (ISO 281 for the dynamic rating, ISO 76 for the static one), and it says nothing about the minimum axial load a thrust bearing needs in order to keep its rolling elements running rather than sliding.
What is the equivalent of ISO 104?
DIN 711 and DIN 715 cover single and double direction thrust ball bearings, DIN 722 and DIN 728 the roller types; GB/T 301 is the Chinese equivalent for thrust ball bearings.
Does ISO 104 mean two bearings are interchangeable?
Dimensionally, yes — that is what a boundary dimension standard is for, and a bearing of the same designation from any maker mounts in the same shaft and housing seat. Functionally, not necessarily: the load rating, the internal design, the cage, the clearance group and the speed limit are decided by the manufacturer and by other standards, and two bearings with the same number are not required to match on any of them.
How do I request a quotation?
Use the technical drawing on this page to pick the exact configuration, then submit it with the quote form. We respond within one business day.
Need a bearing quote or a spec sheet?Message our engineers on WhatsApp — send a drawing or DIN number and get pricing back fast.Start WhatsApp Chat →
This website uses only necessary and functional cookies to operate, secure, and improve basic website performance.
We do not use advertising cookies, Google Analytics, or cross-site tracking technologies.
