Features:
High precision angular contact ball bearing also named Spindle bearings ,which configured correctly refers to a combination of front and rear bearing type bearing arrangement, different configuration determines the spindle different load capacity, running speed, stiffness, temperature and service life, especially on the stiffness and temperature rise more significantly, it should be reasonably configured according to the requirements of machine tool spindle bearings operating characteristics.
Super precision angular contact ball bearings can be classified into 3 types:
■ High precision Angular contact Ball Bearings (standard series ):
Suffix meaning :
1) C:15degrees A5: 25 degrees A : 30 degrees
2) DB :Back to back arrangement DF:Face to face arrangement DT:Tandem arrangement
SU: universal arrangement (single row ) DU : universal arrangement (double row )
3) Accuracy : P2 ISO class 2 P4 ISO class 4 P5 ISO class 5
■ Ultra High-Speed Angular contact ball bearings (Robust series ) :
Suffix meaning :
1) BNR:18 degree BER:25 degree
2) DB :Back to back arrangement DF:Face to face arrangement DT:Tandem arrangement
SU: universal arrangement (single row ) DU : universal arrangement (double row )
3) Accuracy : P2 ISO class 2 P4 ISO class 4 P5 ISO class 5
4) S:bearing steel ring ,bearing steel rolling elements
H: bearing steel ring ,ceramic rolling elements
X: Heat resistant steel,ceramic rolling elements
■ Ultra High-precision Angular contact ball bearings (Robust series ) :
Suffix meaning :
1) BGR:15 degree angle
2) SU: universal arrangement (single row ) DU : universal arrangement (double row )
3) Accuracy : P2 ISO class 2 P4 ISO class 4
4) S:bearing steel ring ,bearing steel rolling elements
H: bearing steel ring ,ceramic rolling elements
X: Heat resistant steel,ceramic rolling elements
5) 10:10 series 19 : 19 series 02: 02 series
Parameter:
Super precision angular contact ball bearings basic knowledge introduction :
| Dimension series | 718 ultra light series |
|---|---|
| 719 light series | |
| 70 medium series | |
| 72 heavy series | |
| Preload | A Light |
| B Medium | |
| C Heavy | |
| Arrangement | D Set of 2 bearings |
| T Set of 3 bearings | |
| Q set of 4 bearings | |
| P set of 5 bearings | |
| B back to back arrangement | |
| F face to face arrangement | |
| T tandem | |
| BT Back to back / Tandem | |
| FT Face to face /Tandem | |
| BC two sets tandem then back to back | |
| FC two sets tandem then face to face | |
| G universal matching | |
| Contact angle | CTA 15° |
| CETA 15° high speed bearing | |
| T Textile laminated phenolic resin cage | |
| ACTA 25° | |
| ACETA 25° high speed bearing | |
| A outer ring centered | |
| B inner ring centered | |
| Accuracy | P4 Standard ISO 4degree |
| P4A Dimension ISO 4 degree Running accuracy ISO 4 degree | |
| P2 Standard ISO 2 degree | |