| Model no. | Ball screw Grade | Shaft Dia.(mm) | Lead (mm) | Tooth length L1(mm) | Full length L(mm) |
| BSPG-0802-FS-69-105-R-C3 | C3 | 8 | 3 | 69 | 105 |
| BSPG-0802-FS-69-105-R-C5 | C5 | 8 | 3 | 69 | 105 |
| BSUG-0802-FS-□ - □ -R-C3 | C3 | 8 | 3 | On Request | On Request Max.300 |
| BSUG-0802-FS-□ - □ -R-C5 | C5 | 8 | 3 | On Request | On Request Max.300 |
| BSCG-0802-FS-□ - □ -R-C3 | C3 | 8 | 3 | On Request | On Request Max.300 |
| BSCG-0802-FS-□ - □ -R-C5 | C5 | 8 | 3 | On Request | On Request Max.300 |
Model No. |
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Lead Accuracy |
| Lead Accuracy of the Ball Screw
|
| Code | Designation of Code | Coding Explanation |
| t | Target value of Standard Movement | The value obtained by deducting the nominal movement from standard movement within the effective screw shaft length. As the screw shaft tends to extract due to temperature change and external loading, such value will be determined after correcting the displacement. Such value will depend on experimental or empirical result. |
| ep | Typical Movement Deviation | The value obtained by deducting the standard movement from typical movement. |
| ls | Standard Movement | Corrected axial movement displacement of the nominal movement, which is occurred due to thermal and loading. It leans to physical movement Line. |
| lm | Typical Movement | Physical Movement Line. The straight line calculated by least square method or simple approximation method according to the curve indicated as physical movement. |
| la | Physical Movement | The physical movement measured. |
| The maximum variations of the physical movement between two straight lines parallel to typical movement will be determined according to the following 3 items. | ||
| Vu | Variation Value | Max. variation within effective length of the shaft section. |
| V300 | Max. variation within 300mm randomly retrieved from effective length of the shaft section. | |
International Standard |
| Ball Screw International Standard Precision Grade
Pre-load Torque Variation Scope (Source: JIS B1192)
Variation of Typical Movement Deviations
Variation Value
Comparison table of Ground Grade Ball Screw and Lead
Comparison table of Ground Grade Ball Screw and Lead
Unit Conversion
|
| Type | Precision |
| Model No. | Ground Grade – Round Flanged Ball Nut-0802 |
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