Dimension Drawing
Specs/CAD
Unit : mm
| Part Number | A | B | L | W | E | F | G | M | Screw Tightening Torque (N・m) |
Standard Bore Diameter D1-D2 |
CAD Download |
Cart |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| XUT-15C | 15 | 16 | 6 | 18 | 4 | 2.5 | 5.2 | M2 | 0.5 | - | CAD | RFQ |
| XUT-20C | 20 | 22 | 7 | 20 | 7 | 2.7 | 6.5 | M2 | 0.5 | - | CAD | RFQ |
| XUT-25C | 25 | 27 | 9 | 27 | 10 | 3.5 | 9 | M2.5 | 1 | - | CAD | RFQ |
| XUT-30C | 30 | 32 | 9.5 | 30 | 10 | 4 | 10.5 | M3 | 1.5 | - | CAD | RFQ |
| XUT-35C | 35 | 37 | 11.5 | 35 | 13 | 5 | 12.5 | M4 | 2.5 | - | CAD | RFQ |
| XUT-40C | 40 | 42 | 12.5 | 40 | 15 | 5.5 | 15 | M4 | 2.5 | - | CAD | RFQ |
| Part Number | Max. Bore Diameter (mm) |
Rated Torque＊1 (N・m) |
Max. Rotational Frequency (min-1) |
Moment of Inertia (kg・m2)＊2 |
Static Torsional Stiffness (N･m/rad) |
Max. Lateral Misalignment (mm) |
Max. Angular Misalignment (°) |
Mass (g) ＊2 |
|---|---|---|---|---|---|---|---|---|
| XUT-15C | 6 | 0.3 | 42000 | 2.3×10-7 | 200 | 0.2 | 1 | 8 |
| XUT-20C | 8 | 0.6 | 31000 | 8.1×10-7 | 400 | 0.2 | 1 | 16 |
| XUT-25C | 12 | 1.2 | 25000 | 2.7×10-6 | 900 | 0.2 | 1 | 33 |
| XUT-30C | 14 | 2.4 | 21000 | 6.2×10-6 | 1300 | 0.2 | 1 | 53 |
| XUT-35C | 16 | 4 | 18000 | 1.3×10-5 | 2200 | 0.2 | 1 | 81 |
| XUT-40C | 20 | 6 | 15000 | 2.6×10-5 | 2300 | 0.2 | 1 | 120 |
＊1： Correction of rated torque due to load fluctuation is not required. For more detailed information, please refer to Selection Guidelines.
＊2： These are values with max. bore diameter.
| Part Number | Standard Bore Diameter D1･D2 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3 | 4 | 5 | 6 | 8 | 10 | 11 | 12 | 14 | 15 | 16 | 18 | 19 | 20 | |
| XUT-15C | ● | ● | ● | ● | - | - | - | - | - | - | - | - | - | - |
| XUT-20C | - | ● | ● | ● | ● | - | - | - | - | - | - | - | - | - |
| XUT-25C | - | - | ● | ● | ● | ● | ● | ● | - | - | - | - | - | - |
| XUT-30C | - | - | - | ● | ● | ● | ● | ● | ● | - | - | - | - | - |
| XUT-35C | - | - | - | - | ● | ● | ● | ● | ● | ● | ● | - | - | - |
| XUT-40C | - | - | - | - | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
● All products are provided with hex socket head cap screw.
● Recommended tolerance for shaft diameters is h6 and h7.
● In case of mounting on D-cut shaft, be careful about the position of the D-cut surface of the shaft. ⇒Mounting and Maintenance
Material/Finish
| XUT-C | |
|---|---|
| Hub | A2017＊1 |
| Spacer | SUS304 |
| Pin | SUJ2 |
| Bush | Polyimide |
| Hex Socket Head Cap Screw | SCM435 Ferrosoferric Oxide Film (Black) |
＊1： Anodized products are also available. Please contact our customer service.
Structure
Clamping Type
XUT-C XUT-C
For the bush of XUT, a polyimide resin with excellent abrasion-resistance is adopted.
The backlash at the initial stage is maintained for a long period.
Characteristics
- Recommended Applicable Motor
| XUT-C | |
|---|---|
| Servomotor | ◎ |
| Stepping Motor | ◎ |
| General-purpose Motor | ● |
- Property
| XUT-C | |
|---|---|
| Zero Backlash | ○ |
| High Torque | ○ |
| High Torsional Stiffness | ◎ |
| Allowable Misalignment | ○ |
| Vibration Absorption Characteristics | ◎ |
- This is a cross joint type flexible coupling.
- Slippage of the bush built in the hubs and the pins of the spacer allows eccentricity and angular misalignment to be accepted.
- The high accuracy fitting of pin and bush allows the extremely small backlash.
- The load on the shaft generated by misalignment is small and the burden on the shaft is reduced.
Application
Actuator / XY stage / Index tableSelection
Selection Based on Shaft Diameter and Rated Torque
The area bounded by the shaft diameter and rated torque indicates the selection size.
Selection Example
In case of selected parameters of shaft diameter of φ 10 and load torque of 0.9 N•m, the selected size is XUT-25CSelection Based on the Rated Output of the Servomotor
| Rated Output (W) |
Servomotor Specifications＊1 | Selection Size | ||
|---|---|---|---|---|
| Diameter of Motor Shaft (mm) |
Rated Torque (N・m) |
Instantaneous Max. Torque (N・m) |
XUT-C | |
| 10 | 5 - 6 | 0.032 | 0.096 | XUT-15C |
| 20 | 5 - 6 | 0.064 | 0.19 | XUT-15C |
| 30 | 5 - 7 | 0.096 | 0.29 | XUT-20C |
| 50 | 6 - 8 | 0.16 | 0.48 | XUT-20C |
| 100 | 8 | 0.32 | 0.95 | XUT-25C |
| 200 | 9 - 14 | 0.64 | 1.9 | XUT-30C |
| 400 | 14 | 1.3 | 3.8 | XUT-35C |
| 750 | 16 - 19 | 2.4 | 7.2 | - |
＊1： Motor specifications are based on general values. For details, see the motor manufacturer's catalogs. This is the size for cases where devices such as reduction gears are not used.
Change in static torsional stiffness due to temperature
This is a value under the condition where the static torsional stiffness at 20°C is 100%.The change of XUT-C in torsional stiffness due to temperature is small and the change in responsiveness is extremely small. If the unit is used under higher temperature, be careful about misalignment due to elongation or deflection of the shaft associated with thermal expansion.
Eccentric Reaction Force
XUT-C has small eccentric reaction force and an extremely small shaft load generated by misalignment. This reduces the load to such components as shaft bearings.
