Machined Brass Cage 51200 Series Thrust Ball Bearings
Temperature and speed limits, lubricant compatibility, and the bore range this cage is offered across.
Machined Brass Cage 51200 Series Thrust Ball Bearings are made from machined cast or wrought brass, rolling-element or ring guided (suffix M, MA, MB or MP by maker). Corrosion behavior: good in most industrial environments; brass is attacked by ammonia, so it is not used in ammonia refrigeration plant. The material is non-magnetic, and the usable service range is the cage itself is good well past the temperature at which the lubricant and the ring stabilization give out. In practice this material is specified for large bearings, high speed, heavy shock and vibration, and wherever temperature or lubricant rules out polyamide.
Material
machined cast or wrought brass, rolling-element or ring guided (suffix M, MA, MB or MP by maker)
Corrosion resistance
Good in most industrial environments; brass is attacked by ammonia, so it is not used in ammonia refrigeration plant
Magnetic response
Non-magnetic
Service temperature
the cage itself is good well past the temperature at which the lubricant and the ring stabilization give out
Property figures are typical for the material. In an assembled bearing the lubricant, the seals and the cage frequently reach their limits before the material does, so check all four against the duty. Material certification is available on request for production orders.
Machined Brass Cage 51200 Series Thrust Ball Bearings are dimensioned to ISO 104 / DIN 711 / GB/T 301 exactly as the standard version is: the material changes the properties, never the envelope. What it does change — good in most industrial environments; brass is attacked by ammonia, so it is not used in ammonia refrigeration plant, non-magnetic and the service range the cage itself is good well past the temperature at which the lubricant and the ring stabilization give out — is set out below with the full size chart.
Why Machined Brass Cage for 51200 Series Thrust Ball Bearings
Specified for large bearings, high speed, heavy shock and vibration, and wherever temperature or lubricant rules out polyamide. In a 51200 series thrust ball bearings it is the cage, which spaces the rolling elements and keeps them from touching each other.
A machined brass cage is strong, stable at temperature, and unaffected by the oils and additives that age a polymer cage. It is what large bearings, high-speed bearings and heavily shocked bearings are supplied with.
Material Properties
Grade designation
machined cast or wrought brass, rolling-element or ring guided (suffix M, MA, MB or MP by maker)
Magnetic response
Non-magnetic
Service temperature
The cage itself is good well past the temperature at which the lubricant and the ring stabilization give out
Corrosion characteristic
Good in most industrial environments; brass is attacked by ammonia, so it is not used in ammonia refrigeration plant
Alternatives and When to Switch
Polyamide is lighter, quieter and cheaper for ordinary speeds and temperatures; pressed steel is the volume standard. Brass earns its cost where the cage forces or the temperature are genuinely beyond both.
What the Material Changes About the Bearing
The cage carries no load, so it changes no rating. What it changes is the operating envelope: the maximum temperature, the maximum speed, the tolerance of shock and vibration, the noise, and the compatibility with the lubricant. A bearing is very often limited by its cage long before its rings are in any danger, which is why the cage suffix in a designation is not a detail.
Sizes of 51200 Series Thrust Ball Bearings Available in Machined Brass Cage
Designation
Bore d (mm)
Outer diameter D (mm)
Height H (mm)
Chamfer r min (mm)
51200
10
26
11
0.6
51201
12
28
11
0.6
51202
15
32
12
0.6
51203
17
35
12
0.6
51204
20
40
14
0.6
51205
25
47
15
0.6
51206
30
52
16
0.6
51207
35
62
18
1
51208
40
68
19
1
51209
45
73
20
1
51210
50
78
22
1
51211
55
90
25
1
51212
60
95
26
1
51213
65
100
27
1
51214
70
105
27
1
51215
75
110
27
1
51216
80
115
28
1
51217
85
125
31
1
51218
90
135
35
1.1
51220
100
150
38
1.1
Other ways to specify the 51200 Series Thrust Ball Bearings
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
Where these dimensions are actually made
Ring forging, heat treatment, raceway grinding and superfinishing all happen under one roof, so a bore tolerance and a clearance group are set by processes we control and can evidence, not by whichever supplier had stock.
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 711 / GB/T 301)
Designation
Bore d (mm)
Outer diameter D (mm)
Height H (mm)
Chamfer r min (mm)
51200
10
26
11
0.6
51201
12
28
11
0.6
51202
15
32
12
0.6
51203
17
35
12
0.6
51204
20
40
14
0.6
51205
25
47
15
0.6
51206
30
52
16
0.6
51207
35
62
18
1
51208
40
68
19
1
51209
45
73
20
1
51210
50
78
22
1
51211
55
90
25
1
51212
60
95
26
1
51213
65
100
27
1
51214
70
105
27
1
51215
75
110
27
1
51216
80
115
28
1
51217
85
125
31
1
51218
90
135
35
1.1
51220
100
150
38
1.1
Video: Machined Brass Cage 51200 Series Thrust Ball Bearings
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
Does Machined Brass Cage change the dimensions or the rating?
The cage carries no load, so it changes no rating. What it changes is the operating envelope: the maximum temperature, the maximum speed, the tolerance of shock and vibration, the noise, and the compatibility with the lubricant. A bearing is very often limited by its cage long before its rings are in any danger, which is why the cage suffix in a designation is not a detail.
Does the cage affect the load rating?
No. The cage carries no load — it spaces the rolling elements and guides them. What it decides is the operating envelope: the temperature limit, the speed limit, the tolerance of shock and vibration, the noise, and the compatibility with the lubricant.
How do I know which cage a bearing has?
From the suffix in the designation. The conventions differ between makers, but a bearing without a cage suffix normally has the standard pressed steel cage, and the polyamide and machined brass alternatives are always marked. Where the cage matters to the duty, state it on the order rather than assuming.
Are Machined Brass Cage 51200 Series Thrust Ball Bearings magnetic?
Machined Brass Cage is non-magnetic.
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 →
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