Ball Screw Assembly 8mmx2.5mmx250mm Flanged Nut BSR08025T7R-0250-FRS-NNN-NNN-N
- 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 an 8mm diameter Grade 10 Ball Screw. Combining speed with extended length, the 250mm version offers the benefits of a 2.5mm lead, suitable for applications requiring quick positioning over longer distances.
Miniature Ball Screw Assembly with an 8mm diameter Grade 10 Ball Screw. Combining speed with extended length, the 250mm version offers the benefits of a 2.5mm lead, suitable for applications requiring quick positioning over longer distances.
- Flanged nut to the right
- Extended travel capabilities with enhanced lead for rapid positioning.
- Durable construction supports high loads while ensuring precise movement.
- Easy to mount and maintain, ideal for automated systems and precision machinery.
- 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 |
|---|---|---|---|---|
| 7.95 mm | 7.07 mm | 2.5 mm | 1.2 mm | 16 mm |
| ØA | B | L | L2 | ØH |
|---|---|---|---|---|
| 29 mm | 4 mm | 26 mm | 4.8 mm | 23 mm |
| W | 4-ØX | Screw Length | Approx. Weight |
|---|---|---|---|
| 20 mm | 3.4 mm | 250 mm | 0.3 lbs |
*For complete dimensions see tab
| Dia. x Lead mm |
ØD mm |
ØA mm |
B mm |
L mm |
L2 mm |
ØH mm |
W mm |
ØX mm |
|---|---|---|---|---|---|---|---|---|
| 6 x 1 | 12 | 24 | 3.5 | 15 | 2.4 | 18 | 16 | 3.4 |
| 6 x 2 | 12 | 24 | 4.0 | 17 | 2.4 | 18 | 16 | 3.4 |
| 8 x 1 | 14 | 27 | 4.0 | 16 | 3.2 | 21 | 18 | 3.4 |
| 8 x 2 | 14 | 27 | 4.0 | 16 | 2.1 | 21 | 18 | 3.4 |
| 8 x 2.5 | 16 | 29 | 4.0 | 26 | 4.8 | 23 | 20 | 3.4 |
| 10 x 2 | 18 | 35 | 5.0 | 28 | 5.3 | 27 | 22 | 4.5 |
| 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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