The NSK PSS1220N1D0471 ball screw has an outer diameter of 12mm, a lead of 20mm, and N1D is NSK's management code. The overall length of the ball screw shaft is 471mm, with C5 precision and a flange-type nut.
Features of the compact FA series PSS type ball screw PSS1220N1D0471:
Quiet operation. Hearing noise is reduced by 50%, with a 6dB reduction in noise level.
Compact design. The nut outer diameter can be reduced by up to 30% (compared to other NSK products), exemplified by the thinner XY table, allowing for miniaturization designs in various machine devices.
High speed. The maximum limiting speed reaches 5000 min⁻¹, significantly increasing the usable range.
Standard grease nipple included. A grease nipple (M5X0.8) is standard equipment, featuring two grease ports for easy use and connection to centralized piping.
The contact-type sealing ring and the nut's appearance achieve a compact design compared to the pipe-circulation type.
Low-profile design. A dedicated low-profile support unit is used in conjunction with the small FA system PSS type, resulting in a unique and innovative design.

Item |
Specification |
Model No. |
PSS1220N1D0471 |
Series |
Compact FA Series |
Type |
PSS |
Screw Shaft Diameter [mm] |
12 |
Lead [mm] |
20 |
Accuracy Grade |
C5 |
Ball Diameter [mm] |
2 |
Nut Length [mm] |
50 |
Maximum travel [mm] |
353 |
Screw Length (Lt) [mm] |
408 |
Screw Length (La) [mm] |
425 |
Screw Length (L) [mm] |
471 |
Weight [kg] |
0.6 |
Rated Dynamic Load [N] |
2330 |
Rated Static Load [N] |
3600 |
Maximum Speed (min-1) |
5000 |
Preload Torque [N·cm] |
0.9~4.9 |
Drive Side Support Unit |
WBK08-01B (Low square) WBK08-11B (Round high load) |
Counter Drive Side Support Unit |
WBK08S-01B(Low square) |

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