GB/T 276 6900 Series Thin Section Ball Bearings Specification
What GB/T 276 fixes, what it deliberately leaves to another document, its equivalents, and the dimensional table.
GB/T 276 is the Chinese national standard for the boundary dimensions of single row deep groove ball bearings, identical in the dimensions it fixes to ISO 15 for this bearing type. A 6204 supplied to GB/T 276 mounts in the same seat as one supplied to ISO 15 or DIN 625-1.
Standard
GB/T 276
Covers
Deep groove ball bearings, boundary dimensions
Does not fix
It fixes dimensions. Load ratings follow GB/T 6391 (equivalent to ISO 281), tolerances GB/T 307.1 (ISO 492) and internal clearance GB/T 4604.1 (ISO 5753-1).
Equivalents
ISO 15 and DIN 625-1 cover the same bearings with the same dimensions.
Product
6900 Series Thin Section Ball Bearings
Governing standards
ISO 15 / DIN 625-1 / GB/T 276
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.
For 6900 series thin section ball bearings, GB/T 276 is one of the controlling documents. The sections below describe its scope, the properties it does NOT decide and which standard does decide them, the equivalent designations, and the full size range.
GB/T 276 — Scope
GB/T 276 is the Chinese national standard for the boundary dimensions of single row deep groove ball bearings, identical in the dimensions it fixes to ISO 15 for this bearing type. A 6204 supplied to GB/T 276 mounts in the same seat as one supplied to ISO 15 or DIN 625-1.
What GB/T 276 Does Not Fix
It fixes dimensions. Load ratings follow GB/T 6391 (equivalent to ISO 281), tolerances GB/T 307.1 (ISO 492) and internal clearance GB/T 4604.1 (ISO 5753-1).
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 GB/T 276
Designation
Bore d (mm)
Outer diameter D (mm)
Width B (mm)
Chamfer r min (mm)
Basic dynamic load rating Cr (kN)
Basic static load rating C0r (kN)
Limiting speed grease (rpm)
Mass (kg)
6900
10
22
6
0.3
2.70
1.27
20000
0.0090
6901
12
24
6
0.3
2.90
1.46
19000
0.011
6902
15
28
7
0.3
4.30
2.24
17000
0.018
6903
17
30
7
0.3
4.62
2.55
15000
0.020
6904
20
37
9
0.3
6.37
3.65
13000
0.040
6905
25
42
9
0.3
7.02
4.30
11000
0.045
6906
30
47
9
0.3
7.28
4.90
9500
0.052
6907
35
55
10
0.6
9.56
6.80
8500
0.083
6908
40
62
12
0.6
13.8
10.0
7500
0.140
6909
45
68
12
0.6
14.1
10.8
6700
0.150
6910
50
72
12
0.6
14.6
11.8
6300
0.160
6911
55
80
13
1
16.5
14.0
5600
0.210
6912
60
85
13
1
16.8
14.9
5300
0.225
6913
65
90
13
1
17.4
16.0
5000
0.240
6914
70
100
16
1
23.8
21.6
4500
0.410
6915
75
105
16
1
24.2
22.8
4300
0.430
6916
80
110
16
1
24.6
23.6
4000
0.450
6917
85
120
18
1.1
31.9
31.0
3800
0.640
6918
90
125
18
1.1
32.5
32.5
3600
0.670
6919
95
130
18
1.1
33.2
34.0
3400
0.700
6920
100
140
20
1.1
42.3
44.0
3200
0.980
National Equivalents
ISO 15 and DIN 625-1 cover the same bearings with the same dimensions.
This product is supplied against ISO 15 / DIN 625-1 / GB/T 276, which names the documents it is made to.
Catalog Products Governed by GB/T 276
GB/T 276 governs more than this one series. In this catalog it applies to:
Other ways to specify the 6900 Series Thin Section Ball Bearings
The same part is also governed by ISO 15 and DIN 625, 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 15 / DIN 625-1 / GB/T 276)
Designation
Bore d (mm)
Outer diameter D (mm)
Width B (mm)
Chamfer r min (mm)
Basic dynamic load rating Cr (kN)
Basic static load rating C0r (kN)
Limiting speed grease (rpm)
Mass (kg)
6900
10
22
6
0.3
2.70
1.27
20000
0.0090
6901
12
24
6
0.3
2.90
1.46
19000
0.011
6902
15
28
7
0.3
4.30
2.24
17000
0.018
6903
17
30
7
0.3
4.62
2.55
15000
0.020
6904
20
37
9
0.3
6.37
3.65
13000
0.040
6905
25
42
9
0.3
7.02
4.30
11000
0.045
6906
30
47
9
0.3
7.28
4.90
9500
0.052
6907
35
55
10
0.6
9.56
6.80
8500
0.083
6908
40
62
12
0.6
13.8
10.0
7500
0.140
6909
45
68
12
0.6
14.1
10.8
6700
0.150
6910
50
72
12
0.6
14.6
11.8
6300
0.160
6911
55
80
13
1
16.5
14.0
5600
0.210
6912
60
85
13
1
16.8
14.9
5300
0.225
6913
65
90
13
1
17.4
16.0
5000
0.240
6914
70
100
16
1
23.8
21.6
4500
0.410
6915
75
105
16
1
24.2
22.8
4300
0.430
6916
80
110
16
1
24.6
23.6
4000
0.450
6917
85
120
18
1.1
31.9
31.0
3800
0.640
6918
90
125
18
1.1
32.5
32.5
3600
0.670
6919
95
130
18
1.1
33.2
34.0
3400
0.700
6920
100
140
20
1.1
42.3
44.0
3200
0.980
Video: GB/T 276 6900 Series Thin Section 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 GB/T 276 specify?
GB/T 276 is the Chinese national standard for the boundary dimensions of single row deep groove ball bearings, identical in the dimensions it fixes to ISO 15 for this bearing type. A 6204 supplied to GB/T 276 mounts in the same seat as one supplied to ISO 15 or DIN 625-1.
What does GB/T 276 not cover?
It fixes dimensions. Load ratings follow GB/T 6391 (equivalent to ISO 281), tolerances GB/T 307.1 (ISO 492) and internal clearance GB/T 4604.1 (ISO 5753-1).
What is the equivalent of GB/T 276?
ISO 15 and DIN 625-1 cover the same bearings with the same dimensions.
Does GB/T 276 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.
