Ball Screw Assembly - Cylindrical Nut BSR08025T7R-0250-CNS-NNN-NNN-N 8mmx2.5mmx250mm
- Max Static Load: 1,700 N
- Max Dynamic Load: 1,320 N
- Accuracy Grade: Grade 7
- Backlash: Standard, 0.05 mm max
- Screw Length: 250 mm
Miniature Ball Screw Assembly with a Cylindrical Nut offers a 250mm rail with an 8mm screw diameter and a 2.5mm lead, designed for applications requiring quick movement over longer distances within a minimal footprint.
Miniature Ball Screw Assembly with a Cylindrical Nut offers a 250mm rail with an 8mm screw diameter and a 2.5mm lead, designed for applications requiring quick movement over longer distances within a minimal footprint.
- Extended 250mm length accommodates more extensive linear movements.
- The 2.5mm lead increases travel efficiency, ideal for dynamic applications.
- Robust design with an 8 mm diameter supports higher axial loads.
- Fitted with polymer wipers for protection against contaminants.
- Compatible with custom and standard machined journals and end blocks.
- Standard fit nut (0.05 mm max backlash)
- For a transitional fit nut (0.008 mm to ≤3% preload), visit the configurator
Lengths:
Resources
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| Ød1 | Ød2 | Ph | Dw | ØD | L |
|---|---|---|---|---|---|
| 7.95 mm | 7.07 mm | 2.5 mm | 1.2 mm | 16 mm | 26 mm |
| L1 | L2 | M x R | Screw Length | Approx. Weight |
|---|---|---|---|---|
| 10 mm | 4.8 mm | 3 x 2.0 mm | 250 mm | 0.3 lbs |
*For complete dimensions see tab
| Dia. x Lead mm |
ØD mm |
L mm |
L1 mm |
L2 mm |
M x R (P9) mm |
|---|---|---|---|---|---|
| 6 x 1 | 12 | 15 | 8 | 2.4 | 2 x 1.2 |
| 6 x 2 | 12 | 17 | 8 | 2.4 | 2 x 1.2 |
| 8 x 1 | 14 | 16 | 8 | 3.4 | 2 x 1.2 |
| 8 x 2 | 14 | 16 | 8 | 2.1 | 2 x 1.2 |
| 8 x 2.5 | 16 | 26 | 10 | 4.8 | 3 x 2 |
| 10 x 2 | 18 | 28 | 10 | 5.3 | 3 x 1.2 |
| Dia. x Lead mm |
Static Coa(kN) |
Dynamic Ca(kN) |
|---|---|---|
| 6 x 1 | 0.97 | 0.74 |
| 6 x 2 | 1.14 | 1.05 |
| 8 x 1 | 1.34 | 0.90 |
| 8 x 2 | 1.70 | 1.32 |
| 8 x 2.5 | 1.70 | 1.32 |
| 10 x 2 | 2.18 | 1.49 |
| Dia. x Lead mm |
Screw OD d1 (mm) |
Screw Root Ø d2 (mm) |
Lead Ph (mm) |
Ball Diameter Dw (mm) |
Starts x Circuits |
|---|---|---|---|---|---|
| 6 x 1 | 5.95 | 5.37 | 1 | 0.8 | 1 x 3 |
| 6 x 2 | 5.95 | 5.13 | 2 | 1.2 | 1 x 3 |
| 8 x 1 | 7.95 | 7.29 | 1 | 0.8 | 1 x 4 |
| 8 x 2 | 7.95 | 7.08 | 2 | 1.2 | 1 x 3 |
| 8 x 2.5 | 7.95 | 7.07 | 2.5 | 1.2 | 1 x 3 |
| 10 x 2 | 9.95 | 9.09 | 2 | 1.2 | 1 x 3 |
The static and dynamic load ratings of PBC Linear ball screws were determined by the ISO 3408 standard calculations.
The dynamic load rating, Ca, is the load at which 90% of properly lubricated identical ball screws will reach 1 x 106 revolutions.
The static load rating, Coa, is an axial static load which will produce a permanent deformation at contact points of the steel balls to ball grooves equal to 0.01% of the ball diameter.
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