Specialized High-Efficiency Ball Screws Linear Motion
Transmission Solution
SEXGL ground ball screws deliver unparalleled accuracy and
durability in high-precision automation systems, trusted by global
leaders like BYD (EV powertrain assembly) and BOE (LCD panel
cutting robots) across North America, Europe, Southeast Asia, and
South Korea.CNC ball screws are high-precision linear motion
components primarily used in CNC machine tools and other precision
mechanical processing equipment. They consist of four main
components: a screw shaft, a nut, ball bearings, and return guides.
The screw shaft is a cylindrical shaft with helical raceways, while
the nut—fitted over the screw shaft—contains corresponding internal
helical raceways. Ball bearings roll between the raceways of the
screw shaft and nut, forming a rolling friction pair that enables
efficient motion transfer.
Characteristics
1.High-Precision Transmission
2.High-Efficiency Transmission
3.High Rigidity and High Load Capacity
4.Long Service Life and Low Maintenance Cost
5.Good Transmission Reversibility
Theory
When the screw shaft is driven to rotate by a power source such as
an electric motor, ball bearings roll between the helical raceways
of the screw shaft and nut. Due to the point or line contact
between the balls and raceways, frictional resistance is minimized,
efficiently converting the rotational motion of the screw shaft
into linear motion of the nut.
During this process, the balls roll forward along the screw shaft's
helical raceway. Upon reaching the end of the nut, they are guided
by the return guides into the reverse channel, which directs them
back to the starting end of the raceway. The balls then re-enter
the raceway to continue rolling, forming a continuous cycle of
motion.
Model no. | d | Lead |
Bead diameter | (Nut size) | Dynamic Rating Load
Ca | Static Rated Load
Coa |
| D | A | B | L | W | H | X | Y | Z | Q | n |
| SFKR0401 | 4 | 1 | 0.8 | 10 | 20 | 3 | 12 | 15 | 14 | 2.9 | - | - | - | 1×2 | 64 | 97 |
| SFKR0601 | 6 | 1 | 0.8 | 12 | 24 | 3.5 | 15 | 18 | 16 | 3.4 | - | - | - | 1×3 | 111 | 224 |
| SFKR0801 | 8 | 1 | 0.8 | 14 | 27 | 4 | 16 | 21 | 18 | 3.4 | - | - | - | 1×4 | 161 | 403 |
| SFKR0802 | 2 | 1.2 | 14 | 27 | 4 | 16 | 21 | 18 | 3.4 | - | - | - | 1×3 | 222 | 458 |
| SFKR082.5 | 2.5 | 1.2 | 16 | 29 | 4 | 26 | 23 | 20 | 3.4 | - | - | - | 1×3 | 221 | 457 |
| SFKR1002 | 10 | 2 | 1.2 | 18 | 35 | 5 | 28 | 27 | 22 | 4.5 | - | - | - | 1×3 | 243 | 569 |
| SFKR1004 | 4 | 2 | 26 | 46 | 10 | 34 | 36 | 28 | 4.5 | 8 | 4.5 | M6 | 1×3 | 468 | 905 |
| SFKR1204 | 12 | 2 | 1.2 | 20 | 37 | 5 | 28 | 29 | 24 | 4.5 | - | - | - | 1×4 | 334 | 906 |
| SFKR1205 | 4 | 2.5 | 24 | 40 | 6 | 28 | 32 | 25 | 3.5 | - | - | - | 1×3 | 454 | 722 |
| SFKR 1202 | 5 | 2.5 | 22 | 37 | 8 | 39 | 29 | 24 | 4.5 | - | - | - | 1×3 | 675 | 1316 |
| SFKR 1402 | 14 | 2 | 1.2 | 21 | 40 | 6 | 23 | 31 | 26 | 5.5 | - | - | - | 1×4 | 354 | 1053 |
| SFKR1602 | 16 | 2 | 1.2 | 25 | 43 | 10 | 40 | 35 | 29 | 5.5 |
| - | M6 | 1×4 | 373 | 1200 |
| SFKR2002 | 20 | 2 | 1.2 | 50 | 80 | 15 | 55 | 65 | 68 | 6.5 | 10.5 | 6 | M6 | 1×6 | 581 | 2284 |
| SFKR2502 | 25 | 2 | 1.2 | 50 | 80 | 13 | 43 | 65 | 68 | 6.5 | 10.5 | 6 | M6 | 1×5 | 540 | 2381 |
