R1 Series Rotating Nut
R1 Series Rotating Nut
- Nut Configurations
- 2 types (R1, R2 integrated nut + bearing), 15 sizes
- Nominal Diameter
- 16 - 50 mm
- Lead
- 5 - 50 mm (R1 lead equals diameter)
- Dynamic Load
- 780 [kgf] - 6500 [kgf]
Hiwin's rotating nut utilizes a special end cap design that allows the steel balls to circulate inside the nut while featuring an integral bearing that allows the ballscrew shaft to be fixed. This unique design reduces noise generated at high speeds and offers higher axial loading and stiffness.
-
45°
Steel-ball contact angle for higher axial load
-
Zero
Backlash when rotating, from the angular-contact construction
-
6500 kgf
Dynamic load rating of the largest model (R2 50-50K4)
Applications
- Semiconductor industries
- Robots
- Wood processing machines
- Laser cutting machines
- Transporting equipment
Rotating nut models
Every R1 model is one nut configuration: a flanged single nut with integral angular-contact bearing and end-cap ball return, cut as a high-lead thread where lead equals the nominal diameter (nut code DFSH, S2 = 1.8 turns × 2 circuits). The model code reads diameter-lead: 40-40S2 is a Ø40 shaft with a 40 mm lead. The nine R2 models (T6 and K4 codes, e.g. 4R25-25K4-DFSCR2EW) add a back-to-back outer-ring bearing and a dustproof component between bearing and nut.
| Model | Shaft (Ø × lead) | Nut load, dyn / static (kgf) | Bearing load, dyn / static (kgf) | Configure |
|---|---|---|---|---|
| 16-16S2 | Ø16 × 16 mm | 780 / 1830 kgf | 798 / 1392 kgf | Configure ↗ |
| 20-20S2 | Ø20 × 20 mm | 870 / 2290 kgf | 1115 / 2005 kgf | Configure ↗ |
| 25-25S2 | Ø25 × 25 mm | 1300 / 3600 kgf | 1228 / 2486 kgf | Configure ↗ |
| 32-32S2 | Ø32 × 32 mm | 1840 / 5450 kgf | 2010 / 4134 kgf | Configure ↗ |
| 40-40S2 | Ø40 × 40 mm | 3030 / 9220 kgf | 3127 / 6906 kgf | Configure ↗ |
| 50-50S2 | Ø50 × 50 mm | 4520 / 14440 kgf | 4280 / 9623 kgf | Configure ↗ |
| 25-5T6 | Ø25 × 5 mm | 1597 / 4164 kgf | 1243 / 2567 kgf | Configure ↗ |
| 25-10T6 | Ø25 × 10 mm | 3515 / 7244 kgf | 1243 / 2567 kgf | Configure ↗ |
| 32-5T6 | Ø32 × 5 mm | 1829 / 5544 kgf | 2050 / 4277 kgf | Configure ↗ |
| 32-6T6 | Ø32 × 6 mm | 2450 / 6812 kgf | 2050 / 4277 kgf | Configure ↗ |
| 32-10T6 | Ø32 × 10 mm | 4109 / 9606 kgf | 2050 / 4277 kgf | Configure ↗ |
| 36-10T6 | Ø36 × 10 mm | 4506 / 11155 kgf | 2574 / 5594 kgf | Configure ↗ |
| 25-25K4 | Ø25 × 25 mm | 1380 / 3900 kgf | 1243 / 2567 kgf | Configure ↗ |
| 32-32K4 | Ø32 × 32 mm | 2100 / 6350 kgf | 2050 / 4277 kgf | Configure ↗ |
| 50-50K4 | Ø50 × 50 mm | 6500 / 19600 kgf | 4368 / 10264 kgf | Configure ↗ |
Part numbers & options
How a part number reads
2R40 - 40S2 - DFSHR1 - 800 - 1000 - 0.018 (spaces between decoded positions)
- 2
- Start type — 1 single to 5 five-start (R1 example: 2 double start)
- R
- Right-hand screw (left-hand on request)
- 40
- Nominal diameter (mm) — 16 to 50 for R1
- 40
- Lead (mm) — equals the nominal diameter on R1 models
- S2
- Turns per circuit — S2 1.8 × 2 circuits (all R1 models)
- D
- Nut start type — D high-lead double start
- F
- Nut shape — F nut with flange
- S
- Nut type — S single · D double
- H
- Circulation — H end cap
- R1
- Optional function — R1 rotating nut
- 800
- Thread length (mm)
- 1000
- Total length (mm)
- 0.018
- Lead deviation over random 300 mm travel (mm)
The configurator assembles this number for you, with drawings and 3D CAD. Configure ↗
Other Ballscrews & Supports
How buying works
Spec it in the configurator: drawings, 3D CAD, and a quote to follow.
HIWIN series are configured to your application, not bought off the shelf. Start from your loads and speeds if you are still choosing a size.
Rather talk it through? Request a quote from an application engineer.