• Couplings
  • Cross Joint Type

XUT-C

Flexible Couplings - Cross Joint Type - Clamping Type

  • High torsional rigidity
  • Vibration absorption characteristics
  • Small Eccentric Reaction Force

Dimension Drawing

XUT-CFlexible Couplings - Cross Joint Type - Clamping Type寸法図

Specs/CAD

Part Number ALWEFGM Screw Tightening
Torque (N・m)
Standard Bore Diameter
D1-D2
Price
(USD)
CAD Add to Cart Additional Modification
XUT-15C 15 6 18 4 2.5 5.2 M2 0.5 - 82.44 CAD Cart       
XUT-20C 20 7 20 7 2.7 6.5 M2 0.5 - 90.18 CAD Cart       
XUT-25C 25 9 27 10 3.5 9 M2.5 1 - 102.77 CAD Cart       
XUT-30C 30 9.5 30 10 4 10.5 M3 1.5 - 115.14 CAD Cart       
XUT-35C 35 11.5 35 13 5 12.5 M4 2.5 - 135.06 CAD Cart       
XUT-40C 40 12.5 40 15 5.5 15 M4 2.5 - 154.04 CAD Cart       

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

XUT-C_CFlexible Couplings - Cross Joint Type

The high accuracy fitting of pin and bush allows the extremely small backlash.
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.

XUT-C_CFlexible Couplings - Cross Joint Type


Characteristics

  • Recommended Applicable Motor
XUT-C
Servomotor
Stepping Motor
General-purpose Motor

◎: Excellent ○: Very good ●: Available

  • Property
XUT-C
Zero Backlash
High Torque
High Torsional Stiffness
Allowable Misalignment
Vibration Absorption Characteristics

◎: Excellent ○: Very good

  • 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 table

Selection

Selection Based on Shaft Diameter and Rated Torque

The area bounded by the shaft diameter and rated torque indicates the selection size.

XUT-C_CFlexible Couplings - Cross Joint Type

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-25C

Selection 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.

XUT-C_TTechnical Information


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.

XUT-C_TTechnical Information


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