SEXGL Ground Ball Screws: Precision-Engineered Motion Control for
Demanding Industrial Applications
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. Utilizing advanced grinding technology, these screws
achieve superior surface finish and geometric consistency, making
them ideal for mission-critical applications where precision and
reliability are non-negotiable.
Ball screw bearing specifications selection
(1) Determine the positioning accuracy;
(2) Determine the lead of the ball screw bearing by the motor and
the speed requirement;
(3) Check the nut size to determine the stroke and related data of
the shaft end of the screw bearing;
(4) Determine the average axial force and speed by load and speed
distribution (acceleration and deceleration);
(5) Determine the pre-pressure from the average axial force;
(6) Determine the dynamic load rating by life expectancy, axial
load and speed;
(7) Determine the outer diameter of the screw bearing and the nut
form by the basic dynamic load rating, lead, critical speed, and
DmN value limit;
(8) The outer diameter, nut, preload, and load determine the
rigidity (machine design);
(9) Ambient temperature, total length of the nut to determine the
thermal variation and cumulative lead;
(10)Screw bearing rigidity, thermal variation position to determine
the pre-tension;
(11)Maximum machine speed, temperature rise time, and screw bearing
specifications determine motor drive torque and specifications.
Model no. | d |
Lead |
Bead diameter | Nut size |
Ca |
Coa |
| D | A | B | L | W | H | X | Q | n |
| SFSR1205-2.8 | 12 | 5 | 2.5 | 24 | 40 | 10 | 31 | 32 | 30 | 4.5 | M6×1 | 2.8×1 | 661 | 1316 |
| SFSR1210-2.8 | 10 | 2.5 | 24 | 40 | 10 | 48.5 | 32 | 30 | 4.5 | M6×1 | 2.8×1 | 642 | 1287 |
| SFSR1605-3.8 | 15 | 5 | 2.778 | 28 | 48 | 10 | 38 | 38 | 40 | 5.5 | M6×1 | 3.8×1 | 1112 | 2507 |
| SFSR1610-2.8 | 10 | 2.778 | 28 | 48 | 10 | 47 | 38 | 40 | 5.5 | M6×1 | 2.8×1 | 839 | 1821 |
| SFSR1616-1.8 | 16 | 2.778 | 28 | 48 | 10 | 45 | 38 | 40 | 5.5 | M6×1 | 1.8×1 | 552 | 1137 |
| SFSR1616-2.8 | 16 | 2.778 | 28 | 48 | 10 | 61 | 38 | 40 | 5.5 | M6×1 | 2.8×1 | 808 | 1769 |
| SFSR1620-1.8 | 20 | 2.778 | 28 | 48 | 10 | 57 | 38 | 40 | 5.5 | M6×1 | 1.8×1 | 554 | 1170 |
| SFSR2005-3.8 | 20 | 5 | 3.175 | 36 | 58 | 10 | 40 | 47 | 44 | 6.6 | M6×1 | 3.8×1 | 1484 | 3681 |
| SFSR2010-3.8 | 10 | 3.175 | 36 | 58 | 10 | 60 | 47 | 44 | 6.6 | M6×1 | 3.8×1 | 1516 | 3833 |
| SFSR2020-1.8 | 20 | 3.175 | 36 | 58 | 10 | 57 | 47 | 44 | 6.6 | M6×1 | 1.8×1 | 764 | 1758 |
| SFSR2020-2.8 | 20 | 3.175 | 36 | 58 | 10 | 77 | 47 | 44 | 6.6 | M6×1 | 2.8×1 | 1118 | 2734 |
| SFSR2505-3.8 | 25 | 5 | 3.175 | 40 | 62 | 10 | 40 | 51 | 48 | 6.6 | M6×1 | 3.8×1 | 1650 | 4658 |
| SFSR2510-3.8 | 10 | 3.175 | 40 | 62 | 12 | 65 | 51 | 48 | 6.6 | M6×1 | 3.8×1 | 1638 | 4633 |
| SFSR2520-2.8 | 20 | 3.969 | 40 | 62 | 12 | 72 | 51 | 48 | 6.6 | M6×1 | 2.8×1 | 1206 | 2695 |
| SFSR2525-1.8 | 25 | 3.175 | 40 | 62 | 12 | 70 | 51 | 48 | 6.6 | M6×1 | 1.8×1 | 843 | 2199 |
| SFSR2525-2.8 | 25 | 3.175 | 40 | 62 | 12 | 95 | 51 | 48 | 6.6 | M6×1 | 2.8×1 | 1232 | 3421 |
| SFSR3205-3.8 | 32 | 5 | 3.175 | 50 | 80 | 12 | 42 | 65 | 62 | 9 | M6×1 | 3.8×1 | 1839 | 6026 |
| SFSR3210-3.8 | 31 | 10 | 3.969 | 50 | 80 | 13 | 62 | 65 | 62 | 9 | M6×1 | 3.8×1 | 2460 | 7255 |
| SFSR3220-2.8 | 20 | 3.969 | 50 | 80 | 12 | 80 | 65 | 62 | 9 | M6×1 | 2.8×1 | 1907 | 5482 |
| SFSR3232-1.8 | 32 | 3.969 | 50 | 80 | 13 | 84 | 65 | 62 | 9 | M6×1 | 1.8×1 | 1257 | 3426 |
| SFSR3232-2.8 | 32 | 3.969 | 50 | 80 | 13 | 116 | 65 | 62 | 9 | M6×1 | 2.8×1 | 1838 | 2329 |
| SFSR4005-3.8 | 40 | 5 | 3.175 | 63 | 93 | 15 | 45 | 78 | 70 | 9 | M8×1 | 3.8×1 | 2018 | 7589 |
| SFSR4010-3.8 | 38 | 10 | 6.35 | 63 | 93 | 14 | 63 | 78 | 70 | 9 | M8×1 | 3.8×1 | 5035 | 13943 |
| SFSR4020-2.8 | 20 | 6.35 | 63 | 93 | 14 | 82 | 78 | 70 | 9 | M8×1 | 2.8×1 | 3959 | 10715 |
| SFSR4040-1.8 | 40 | 6.35 | 63 | 93 | 15 | 105 | 78 | 70 | 9 | M8×1 | 1.8×1 | 2585 | 6648 |
| SFSR4040-2.8 | 40 | 6.35 | 63 | 93 | 15 | 145 | 78 | 70 | 9 | M8×1 | 2.8×1 | 3780 | 10341 |
| SFSR5005-3.8 | 50 | 5 | 3.175 | 75 | 110 | 15 | 45 | 93 | 85 | 11 | M8×1 | 3.8×1 | 2207 | 9542 |
| SFSR5010-3.8 | 48 | 10 | 6.35 | 75 | 110 | 18 | 68 | 93 | 85 | 11 | M8×1 | 3.8×1 | 5638 | 17852 |
| SFSR5020-3.8 | 20 | 6.35 | 75 | 110 | 18 | 108 | 93 | 85 | 11 | M8×1 | 3.8×1 | 5749 | 18485 |
| SFSR5050-1.8 | 50 | 6.35 | 75 | 110 | 18 | 125 | 93 | 85 | 11 | M8×1 | 1.8×1 | 2946 | 8749 |
| SFSR5050-2.8 | 50 | 6.35 | 75 | 110 | 18 | 175 | 93 | 85 | 11 | M8×1 | 2.8×1 | 4308 | 13610 |
