Ball Screw
The FFB ball screw is a single nut ball screw in preloaded type and it comes in a variety of specifications. It is available in nominal diameters from 20 to 50mm and basic leads from 4 to 10mm. With small nut installation size, the ball screw can meet the requirements for small, medium leads, and low, medium speeds. Typical applications for this ball screw include various industrial equipment, precision instruments and precision CNC machine tools.
Technical Specifications of the FFB Ball Screw| Code and Spec. | Nominal Dia. da | Basic Lead PhD | Outer Dia. of Ball Screw d1 | Ball Dia. DW | Bottom Dia. of Ball Screw d2 | Number of Circles n | Basic Rated Load | Rigidity KC N/um | |
| Dynamic Load Ca KN | Static Load CDN KN | ||||||||
| FFB2004L-2 | 20 | 4 | 19.3 | 2.381 | 17.3 | 2 | 5.2 | 10.2 | 356 |
| FFB2004-2 | 20 | 4 | 19.1 | 3 | 16.9 | 2 | 5.2 | 10.2 | 356 |
| FFB2005-2 | 20 | 5 | 19.5 | 3.5 | 16.9 | 2 | 6.4 | 12.2 | 364 |
| FFB2504-2 | 25 | 4 | 24.1 | 3 | 21.9 | 2 | 5.9 | 13.5 | 445 |
| FFB2505-2 | 25 | 5 | 24.5 | 3.5 | 21.9 | 2 | 7.3 | 15.7 | 446 |
| FFB2506-2 | 25 | 6 | 23.9 | 3.969 | 20.9 | 2 | 7.9 | 15.9 | 432 |
| FFB3204-2 | 32 | 4 | 31.1 | 3 | 28.9 | 2 | 6.8 | 18.6 | 447 |
| FFB3205-2 | 32 | 5 | 3.1.5 | 3.5 | 28.9 | 2 | 8.2 | 21 | 560 |
| FFB3206-2 | 32 | 6 | 30.9 | 3.969 | 27.9 | 2 | 9.2 | 21.4 | 569 |
| FFB3210-2 | 32 | 10 | 31 | 5.953 | 26.5 | 2 | 14.5 | 29.2 | 537 |
| FFB4005-2 | 40 | 5 | 39.5 | 3.5 | 36.9 | 2 | 9.2 | 27 | 695 |
| FFB4006-2 | 40 | 6 | 38.9 | 3.969 | 35.9 | 2 | 10.6 | 29.2 | 690 |
| FFB4008-2 | 40 | 8 | 38.6 | 5 | 34.9 | 2 | 14 | 34 | 705 |
| FFB4010-2 | 40 | 10 | 39.5 | 7.144 | 34.3 | 2 | 21.1 | 44.2 | 660 |
| FFB5005-2 | 50 | 5 | 49 | 3.5 | 46.5 | 2 | 10 | 34 | 822 |
| FFB5006-2 | 50 | 6 | 48.9 | 3.969 | 45.9 | 2 | 12 | 38.1 | 830 |
| FFB5008-2 | 50 | 8 | 48.6 | 5 | 44.9 | 2 | 15.8 | 44.6 | 861 |
| FFB5010-2 | 50 | 10 | 49.5 | 7.144 | 44.3 | 2 | 25.3 | 62.1 | 864 |
| D1 | D2 | L2 | D3 | B | D4 | D5 | D6 | h | D7 | M | D5 | L1 | Code and spec. |
| 36 | 36 | 10 | 62 | 11 | 48 | 5.8 | 10 | 6 | 40 | M6 | 25 | 49 | FFB2004L-2 |
| 36 | 36 | 10 | 62 | 11 | 48 | 5.8 | 10 | 6 | 40 | M6 | 25 | 49 | FFB2004-2 |
| 36 | 36 | 10 | 62 | 11 | 48 | 5.8 | 10 | 6 | 42 | M6 | 25 | 55 | FFB2005-2 |
| 40 | 40 | 10 | 66 | 11 | 53 | 5.8 | 10 | 6 | 46 | M6 | 30 | 49 | FFB2504-2 |
| 40 | 40 | 10 | 66 | 11 | 53 | 5.8 | 10 | 6 | 46 | M6 | 30 | 55 | FFB2505-2 |
| 40 | 40 | 10 | 66 | 11 | 53 | 5.8 | 10 | 6 | 46 | M6 | 30 | 65 | FFB2506-2 |
| 50 | 50 | 10 | 76 | 11 | 63 | 5.8 | 10 | 6 | 56 | M6 | 38 | 47 | FFB3204-2 |
| 50 | 50 | 10 | 82 | 13 | 67 | 7 | 12 | 7 | 62 | M6 | 38 | 57 | FFB3205-2 |
| 50 | 50 | 10 | 82 | 13 | 67 | 7 | 12 | 7 | 62 | M6 | 38 | 65 | FFB3206-2 |
| 53 | 53 | 15 | 90 | 15 | 71 | 9 | 15 | 9 | 70 | M6 | 44 | 96 | FFB3210-2 |
| 60 | 60 | 10 | 94 | 15 | 75 | 9 | 15 | 9 | 75 | M6 | 48 | 48 | FFB4005-2 |
| 60 | 60 | 10 | 94 | 15 | 75 | 9 | 15 | 9 | 75 | M6 | 48 | 68 | FFB4006-2 |
| 63 | 63 | 15 | 108 | 18 | 85 | 11 | 18 | 11 | 85 | M6 | 50 | 84 | FFB4008-2 |
| 63 | 63 | 20 | 108 | 18 | 85 | 11 | 18 | 11 | 80 | M8*1 | 50 | 101 | FFB4010-2 |
| 71 | 71 | 15 | 110 | 15 | 90 | 9 | 15 | 9 | 84 | M8*1 | 60 | 58 | FFB5005-2 |
| 71 | 71 | 15 | 110 | 15 | 90 | 9 | 15 | 9 | 84 | M8*1 | 60 | 68 | FFB5006-2 |
| 75 | 75 | 15 | 118 | 18 | 95 | 11 | 18 | 11 | 90 | M8*1 | 60 | 87 | FFB5008-2 |
| 75 | 75 | 15 | 118 | 18 | 95 | 11 | 18 | 11 | 90 | 90 | M8*1 | 62 | 102 |
NOTE
1. KC is the theoretical calculation value when preload Fp is 0.1Ca and axial load F is 0.3Ca.
2. When axial load F is not equal to 0.3Ca.
KC=K(F/0.3Ca)1/3
In formula, K is rigidity value shown in Table.
3. The normal working environment temperature for FFB type ball screw is ±60℃.
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