ADR bearing designation: A721E
ADR bearing designation: A721E
This designation is only defining the size and shape of the ball bearing. Materials and performances have to be detailed during study and quotation.
Bearing Dimension
| d | 33.3375 mm | D | 44.45 mm | |
|---|---|---|---|---|
| d1 | 36.92 mm | D1 | 40.87 mm | |
| B* | 6.35 mm | r | 0.38 mm | |
|
* For protected bearing (ZZ, FF, -2RS) |
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Speed Limit
| Lubricant & Bearing Type 1 | |
|---|---|
| Contact us |
| Lubricant & Bearing Type 2 | |
|---|---|
| Contact us |
Basic Load Rating of Bearing
| Static radial capacity [Co] | 2,530 N |
|---|---|
| Static axial capacity [Ca] | 4,100 N |
| Dynamic radial capacity (X105CrMo17) [C] | 2,590 N |
| Dynamic radial capacity (100Cr6) [C] | - N |
| To improve Capacity and Life time Contact us | |
Bearing Version
| Serie | Thin section bearing - Inch serie |
|---|---|
| Conception | Deep groove ball bearing |
| Cage | With PTFE separator tubes |
| For Bearing Protected with Shields or Seals Contact us | |
Tolerance, Internal Clearance and Calibration
| Tolerance class selected usually | Class “T4” for Rigid ball bearing |
|---|---|
| Class “TA4” for Thin Section ball bearing | |
| For Others Tolerances Refer to catalogue Page 32 to 43 | |
Assembling Configuration
ADR proposes different bearings pair configuration in standard, for example:
- DO for Duplex ball bearings in Back-to-Back configuration
- DX for Duplex ball bearings in Face-to-Face configuration
|
To define assembling configuration and preload value: |
Mean Mass
| Ball bearing mass | 22.00 g |
|---|
Additional Informations
Recommended lubricant operating temperature:
Open ball bearing: Oil, ISOFLEX PDP38 – Minimum -65°C and +100°C maximum
Protected ball bearing: Grease, NYCOGREASE GN10 – Minimum -73°C and +121°C maximum
In standard Stainless steel ring and cage, maximum temperature to 150°C
Phenolic resin cage, maximum temperature to 120°C
PTFE separators balls, maximum temperature to 150°C
For further information on the A721E designation
Data are not contractually binding. ADR disclaims any responsibility for printing errors in this data sheet.