Intrduction of Linear Motion Guide
Features of The BR Series
- Built-in long life lubrication.
- Equal load capacities in four directions.
- Smooth running due to new ball re-circulation.
- High rigidity-4-row angular contact.
- International standard dimension.
- High accuracy Low friction Low maintenance.
- High speed, low noise.
- Integral all-round sealing.
- Interchangeability.
- Environment protection green production.
Length of Rail
| Type |
BR 15 |
BR 20 |
BR 25 |
BR 30 |
BR 35 |
BR 45 |
BR 55 |
| Standard Length of Rail |
160(3) |
220(4) |
280(5) |
280(5) |
280(5) |
570(6) |
780(7) |
| 220(4) |
280(5) |
340(6) |
440(6) |
440(6) |
885(9) |
1020(9) |
| 280(5) |
340(6) |
460(8) |
600(8) |
600(8) |
1200(12) |
1260(11) |
| 340(6) |
460(8) |
640(11) |
760(10) |
760(10) |
1620(16) |
1500(13) |
| 460(8) |
640(11) |
820(14) |
1000(13) |
1000(13) |
2040(20) |
1980(17) |
| 640(11) |
820(14) |
1000(17) |
1640(21) |
1640(21) |
2460(24) |
2580(22) |
| 820(14) |
1000(17) |
1240(21) |
2040(26) |
2040(26) |
2985(29) |
2940(25) |
| 1000(17) |
1240()21 |
1600(27) |
2520(32) |
2520(32) |
- |
- |
| 1240(21) |
1600(27) |
1840(30) |
3000(38) |
3000(38) |
- |
- |
| F |
60 |
60 |
80 |
80 |
80 |
105 |
120 |
| G |
20 |
20 |
20 |
20 |
20 |
22.5 |
30 |
| Max Length |
4000 |
4000 |
4000 |
4000 |
4000 |
4000 |
4000 |
Standard
 |
Normal |
High |
Precision |
Super Precision |
Top |
| Dimension Tolerance Of Height H |
±0.1 |
±0.04 |
0 - 0.04 |
0 - 0.02 |
0 - 0.01 |
| Dimension Tolerance Of Width W |
±0.1 |
±0.04 |
0 - 0.04 |
0 - 0.02 |
0 - 0.01 |
| Pair Variation Of Height H |
0.03 |
0.02 |
0.01 |
0.005 |
0.003 |
| Pair Variation Of Width W (Master Rail) |
0.03 |
0.02 |
0.01 |
0.005 |
0.003 |
| Running Parallelism Of Block Surface C To Surface A |
See Fig.1 |
| Running Parallelism Of Block Surface D To Surface B |
Model-Number Coding: BRH 25A 2 UU + 460L
BRH (Specification Number)
25 (Model Size)
A (Block Type)
2 (Number Of Block)
UU (Seal)
460L (Length (mm))
H (Precision Grade(H)) | 
