Product Features
Quantity
USS1205N1D0621 is an NSK Compact FA series USS-type (high accuracy / cleanroom use) precision ball screw: 12 mm shaft diameter, 5 mm lead, 621 mm overall length, accuracy grade JIS C3, zero backlash (oversize-ball preload), stroke 500 mm nominal / 530 mm max, with basic load ratings of Ca 3.75 kN (dynamic) and C0a 5.81 kN (static). The USS type uses NSK LG2 low-dust grease (approx. 90% less dust than general lithium grease) and is designed for cleanroom environments such as semiconductor / LCD process and inspection equipment, while retaining the short lead times of a standard-stock series.
Not sure which accuracy grade you need? See our guide to ball screw accuracy grades C0–C10.
Other lengths, same specification
USS1205N1D0221, USS1205N1D0321
Other USS shaft diameters
USS1005N1D0221, USS1505N1D0261
Customization
Custom shaft-end machining to your drawing is available for this model (to match your bearing housings and couplings). Add the part number and your requirements (or attach a drawing) to the inquiry list — Nahshon works directly with NSK to confirm specifications, quotation and lead time.
| Specification | Unit | USS1205N1D0621 |
|---|---|---|
| Series | - | Compact FA / USS type (high accuracy / cleanroom) |
| Shaft diameter | mm | 12 |
| Lead | mm | 5 |
| Overall length | mm | 621 |
| Stroke (nominal / max.) | mm | 500 / 530 |
| Accuracy grade | - | JIS C3 (USS standard) |
| Axial play | mm | 0 (oversize-ball preload) |
| Dynamic load rating Ca | kN | 3.75 |
| Static load rating C0a | kN | 5.81 |
| Grease | - | NSK LG2 low-dust grease |
| Shaft-end machining | - | Custom, to drawing |
Compact FA (USS Cleanroom)・Compact FA / USS type (high accuracy / cleanroom)
