• Couplings
  • Disk Type

Flexible Couplings - Single-Disk Type

XHS-C

Safety PrecautionsGlossaryMounting/maintenance

RoHS Compliant

  • Zero Backlash
  • High torsional rigidity
  • High Torque
XHS-C_CFlexible Couplings - Single-Disk Type

Dimension Drawing

XHS-CFlexible Couplings - Single-Disk Type寸法図

XHS-CFlexible Couplings - Single-Disk Type寸法図

Specs/CAD

Part Number ALWFGM Screw Tightening
Torque (N・m)		Standard Bore Diameter
D1-D2		 Price
(USD)		 CAD
Download		 Add to Cart Additional Modification
XHS-15C 15 7.8 16.5 2.3 5 M2 0.45 - 58.33 CAD Cart       
XHS-19C 19 9.2 19.3 2.6 7 M2 0.5 - 45.97 CAD Cart       
XHS-25C 25 11 23.1 3.3 9.25 M2.5 1 - 48.78 CAD Cart       
XHS-27C 27 11 23.1 3.3 10.25 M2.5 1 - 49.12 CAD Cart       
XHS-34C 34 12.5 26.4 3.75 13 M3 1.5 - 55.91 CAD Cart       
XHS-39C 39 15.5 32.8 4.5 14.5 M4 3.5 - 63.61 CAD Cart       
XHS-44C 44 15.5 32.8 4.5 17 M4 3.5 - 78.94 CAD Cart       
XHS-56C 56 20.5 43.5 6 21 M5 8 - 98.59 CAD Cart       
XHS-64C 64 24 51.2 7 24 M6 13 - 125.47 CAD Cart       
XHS-79C 79 30 63.6 8.75 29 M8 28 - 208.31 CAD Cart       
XHS-98C 98 32 69 8.7 38 M8 28 - 323.99 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
(°)		 Max. Axial
Misalignment
(mm)		Mass
(g) ＊2
XHS-15C 6 0.6 42000 2.2×10-7 110 0.01 0.7 ±0.1 6.8
XHS-19C 8 1.5 33000 6.3×10-7 330 0.02 1 ±0.1 13
XHS-25C 12 3 25000 2.3×10-6 1200 0.02 1 ±0.15 25
XHS-27C 14 3.3 23000 3.1×10-6 1800 0.02 1 ±0.2 27
XHS-34C 16 6.3 18000 9.2×10-6 3900 0.02 1 ±0.25 52
XHS-39C 20 12 16000 2.0×10-5 6000 0.02 1 ±0.25 84
XHS-44C 22 15 14000 3.3×10-5 7900 0.02 1 ±0.3 107
XHS-56C 28 37.5 11000 1.1×10-4 14000 0.02 1 ±0.35 233
XHS-64C 35 50 9800 2.2×10-4 16000 0.02 1 ±0.45 328
XHS-79C 42 100 7900 6.7×10-4 23000 0.02 1 ±0.55 748
XHS-98C 50 280 6400 1.7×10-3 52000 0.02 1 ±0.65 1120

＊1：　Correction of rated torque due to load fluctuation is not required.

※ The shaft's slip torque may be smaller than the coupling's rated torque depending on the shaft bore.

＊2：　These are values with max. bore diameter.

Part Number Standard Bore Diameter D1･D2
3 4 5 6 6.35 8 9.525 10 11 12 14 15 16 17 18 19 20 22 24 25 28 30 32 35 38 40 42 45 50
XHS-15C ● ● ● ● - - - - - - - - - - - - - - - - - - - - - - - - -
XHS-19C ● ● ● ● ● ● - - - - - - - - - - - - - - - - - - - - - - -
XHS-25C - ● ● ● ● ● ● ● ● ● - - - - - - - - - - - - - - - - - - -
XHS-27C - ● ● ● ● ● ● ● ● ● ● - - - - - - - - - - - - - - - - - -
XHS-34C - - ● ● ● ● ● ● ● ● ● ● ● - - - - - - - - - - - - - - - -
XHS-39C - - - ● ● ● ● ● ● ● ● ● ● ● ● ● ● - - - - - - - - - - - -
XHS-44C - - - - - ● ● ● ● ● ● ● ● ● ● ● ● ● - - - - - - - - - - -
XHS-56C - - - - - ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● - - - - - - - -
XHS-64C - - - - - - - ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● - - - - -
XHS-79C - - - - - - - - - - ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● - -
XHS-98C - - - - - - - - - - - - - - - - - - - ● ● ● ● ● ● ● ● ● ●

● All products are provided with hex socket head cap screw.
● Recommended tolerance for shaft diameters is h6 and h7. (Recommended tolerance for shaft diameter φ35 only is -0.025 to +0.010.)
● Bore and keyway modifications are available on request. Please take advantage of our modification services.
● For the shaft insertion amount to the coupling, see Mounting/maintenance. ⇒Mounting and Maintenance


Part Number
Amount
Price（＄）

Check other products Cart

　　　　　　

Additional Modification Service

Modified Part Number

Enter the desired bore diameter and then click [Check Modified Part Number].

Standard bore diameter(D1) Standard bore diameter(D2) Modified Part Number Price Add to cart

unit:mm
Applicable Bore Diameter
D1D2		 keyway Key
b t Nominal Dimension
b×h
Standard Dimension Allowance
(JS9)		 Standard Dimension Allowance
6 7       2 ±0.0125 1.0 +0.1
0 		2×2
8 9 10     3 ±0.0125 1.4 3×3
11 12       4 ±0.0150 1.8 4×4
13 14 15 16 17 5 ±0.0150 2.3 5×5
18 19 20 22   6 ±0.0150 2.8 6×6
24 25 28 30   8 ±0.0180 3.3 +0.2
0 		8×7
32 35 36 38   10 ±0.0180 3.3 10×8
40 42 44     12 ±0.0215 3.3 12×8
45 48 50     14 ±0.0215 3.8 14×9
55 16 ±0.0215 4.3 16×10

unit:inch
Standard Inch Bore Diameter
D1D2		 Keyway
Wk T
Standard Dimension Allowance Standard Dimension Allowance
1/2 1/8 +0.002
  0		 0.560 +0.01
  0
9/16 1/8 +0.002
  0		 0.623 +0.01
  0
5/8 3/16 +0.002
  0		 0.709 +0.01
  0
11/16 3/16 +0.002
  0		 0.773 +0.01
  0
3/4 3/16 +0.002
  0		 0.837 +0.01
  0
13/16 3/16 +0.002
  0		 0.900 +0.01
  0
7/8 3/16 +0.002
  0		 0.964 +0.01
  0
15/16 1/4 +0.002
  0		 1.051 +0.01
  0
1 1/4 +0.002
  0		 1.114 +0.01
  0
1-1/8 1/4 +0.002
  0		 1.241 +0.01
  0
1-1/4 1/4 +0.002
  0		 1.367 +0.01
  0
1-3/8 5/16 +0.002
  0		 1.518 +0.01
  0
1-1/2 3/8 +0.002
  0		 1.669 +0.01
  0
1-5/8 3/8 +0.002
  0		 1.796 +0.01
  0
1-3/4 3/8 +0.002
  0		 1.922 +0.01
  0

Slip torque

As in the table below, the clamping type XHS-C has different slip torque according to the bore diameter. Take care during selection.

Unit : N・m

Outside Diameter Bore Diameter (mm)
3 4 5 6 6.35 8 9.525 10 11 12 14 15 16 25 28 30 32 35 38 40 42 45
15 0.7
19 0.7 1.7 3
25 2.5 3.6 4.7 5
27 2 2.9 4 4.2 5.8
34 3.5 4.9 5.5 7.9 10 11 12
39 6 8 13 18 19 23
44 8 13 15 20 26
56 22 34 37 45 55 66
64 23 42 60 88
79 140 150 180
98 120 140 150 170 190 210 220 240 260

These are test values based on the conditions of shaft dimensional allowance: h7, hardness: 34-40 HRC, and screw tightening torque of the values described in XHS-C dimension tables. They are not guaranteed values.
Slip torque changes with usage conditions. Carry out tests under conditions similar to actual conditions in advance.


Structure

Clamping TypeXHS-C

XHS-CShort Type

XHS-C_CFlexible Couplings - Single-Disk Type


Material/Finish

XHS-C
Hub A2017
Anodized
Disk Fixing Bolts SCM435
Ferrosoferric Oxide Film (Black)
Disk SUS304
Collar SUS304
Hex Socket Head Cap Screw SCM435
Ferrosoferric Oxide Film (Black)

Characteristics

  • Recommended Applicable Motor
XHS-C
Servomotor ◎
Stepping Motor ◎
General-purpose Motor ●

◎: Excellent ○: Very good ●: Available

  • Property
XHS-C
Zero Backlash ◎
High-gain Supported ○
High Torque ◎
High Torsional Stiffness ◎
Allowable Misalignment ○

◎: Excellent ○: Very good

  • This is a single disk type flexible coupling.
  • High-torque specification with rated torque 1.5 times higher than conventional products.
  • This is the most appropriate for a servomotor with instantaneous max. torque of 350%.
  • The stainless steel disk allows eccentricity, and angular misalignment, and end-play.

Application

Actuator / Surface-mount machine / High precision XY stage / Index table

Precautions for Use

In case of mounting on D-cut shaft, be careful about the position of the D-cut surface of the shaft. ⇒Mounting and Maintenance
There are sizes where the hex socket head bolt exceeds the outer diameter of the coupling and the rotating diameter is larger than the outer diameter. Please be careful of the interference of coupling.　Rotation Diameter


Selection

Selection Based on Shaft Diameter and Rated Torque

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

XHS-C_CFlexible Couplings - Single-Disk Type

Selection Example

In case of selected parameters of shaft diameter of φ25 and load torque of 30 N•m, the selected size is XHS-56C.

Selection Based on the Rated Output of the Servomotor

XHS-C supports the servomotor with instantaneous max. torque increased to 350% of the rated torque and the size can be more reduced than the size of conventional product XBS-C.
Rated Output
(W)		 Servomotor Type Servomotor Specifications＊1 Selection Size
Mitsubishi Electric Corporation YASKAWA Electric Corporation SANYO DENKI Co., Ltd. KEYENCE CORPORATION Diameter of Motor Shaft
(mm)		 Rated Torque
(N・m)		 Instantaneous Max. Torque
(N・m)		 XHS-C XBS-C
100 HG-KR SGMJV R2 SV 8 0.32 1.1 XHS-19C XBS-25C
200 14 0.64 2.2 XHS-27C XBS-34C
400 14 1.3 4.5 XHS-34C XBS-39C
750 16 - 19 2.4 8.4 XHS-39C XBS-44C

＊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.


Thrust reaction force

XHS-C_TTechnical Information


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 XHS-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.

XHS-C_TTechnical Information


Static torsional stiffness comparison (single disc-type)

XHS-C has high static torsional stiffness and responsiveness.
Optimal for high-speed and precision positioning for servomotors, etc.

XHS-C_TTechnical Information


Related Services

Product List

XHS-15C

XHS-19C

XHS-25C

XHS-27C

XHS-34C

XHS-39C

XHS-44C

XHS-56C

XHS-64C

XHS-79C

XHS-98C

XGT2

Part Name

Flexible Couplings - High-gain Rubber Type - Standard Type

Part Number

XGT2

Feature

Zero Backlash
For High Gain
High Torque
High Torsional Stiffness
High Vibration Absorption

MSH

Part Name

Flexible Couplings - Spiral Slit Type

Part Number

MSH

Feature

Single-Piece Construction
Zero Backlash
Low reaction force

XGS2

Part Name

Flexible Couplings - High-gain Rubber Type - Short Type

Part Number

XGS2

Feature

Zero Backlash
For High Gain
High Torque
High Torsional Stiffness
High Vibration Absorption

LEMS

Part Name

Plastic Clamp Lever, Male Screw

Part Number

LEMS

Feature

Lightweight
Screw is made from Stainless Steel
Good Design Award

Click here to see Disk Type

XHW-C

Part Name

Flexible Couplings - Disk Type - Clamping Type

Part Number

XHW-C

Feature

Zero Backlash
High Torque
High Torsional Stiffness

XHW-C-L

Part Name

Flexible Couplings - Disk Type - Clamping Type

Part Number

XHW-C-L

Feature

Zero Backlash
High Torque
High Torsional Stiffness

XBW-C

Part Name

Flexible Couplings - Disk Type - Clamping Type

Part Number

XBW-C

Feature

Zero Backlash
High Torque
High Torsional Stiffness

XBWS-C

Part Name

Flexible Couplings - Disk Type - Clamping Type

Part Number

XBWS-C

Feature

Zero Backlash
High Torque
High Torsional Stiffness

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Bellows Type

Bellows Type

High Gain Rubber Type

High Gain Rubber Type

Oldham Type

Oldham Type

Cross Joint Type

Cross Joint Type

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