Dimension Drawing
Specs/CAD
| Part Number | A | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| XBSS-15C2A | 15 | 7.5 | 16 | 2.3 | 5.25 | M2 | 0.5 | - | 96.61 | CAD | Cart | |
| XBSS-19C2A | 19 | 9 | 19 | 2.5 | 7.1 | M2 | 0.5 | - | 96.82 | CAD | Cart | |
| XBSS-25C2A | 25 | 11 | 23.6 | 3.5 | 9.25 | M2.5 | 1 | - | 114.88 | CAD | Cart | |
| XBSS-27C2A | 27 | 11 | 23.6 | 3.5 | 10.25 | M2.5 | 1 | - | 116.42 | CAD | Cart | |
| XBSS-34C3A | 34 | 12 | 26.2 | 4 | 13 | M3 | 1.5 | - | 151.37 | CAD | Cart | |
| XBSS-39C2A | 39 | 15 | 32.8 | 5 | 14.5 | M4 | 3.5 | - | 182.38 | CAD | Cart | |
| XBSS-44C2A | 44 | 15 | 32.8 | 5 | 17 | M4 | 3.5 | - | 217.43 | CAD | Cart | |
| XBSS-56C3A | 56 | 20 | 43.2 | 6 | 21.25 | M5 | 8 | - | 343.03 | CAD | Cart |
| Part Number | Max. Bore Diameter (mm) |
Rated Torque＊1 (N・m) | ||||||
|---|---|---|---|---|---|---|---|---|
| XBSS-15C2A | 6 | 0.42 | 42000 | 2.3×10-7 | 500 | 0.5 | ±0.1 | 15 |
| XBSS-19C2A | 8 | 0.6 | 33000 | 7.4×10-7 | 1000 | 1 | ±0.1 | 29 |
| XBSS-25C2A | 12 | 1.1 | 25000 | 2.8×10-6 | 1500 | 1 | ±0.2 | 53 |
| XBSS-27C2A | 14 | 1.3 | 23000 | 3.8×10-6 | 2100 | 1 | ±0.2 | 67 |
| XBSS-34C3A | 16 | 2.5 | 18000 | 1.1×10-5 | 3800 | 1 | ±0.3 | 115 |
| XBSS-39C2A | 20 | 4.8 | 16000 | 2.3×10-5 | 5500 | 1 | ±0.3 | 185 |
| XBSS-44C2A | 22 | 5.6 | 14000 | 3.9×10-5 | 7000 | 1 | ±0.3 | 305 |
| XBSS-56C3A | 28 | 14 | 11000 | 1.4×10-4 | 15000 | 1 | ±0.4 | 610 |
＊1： Correction of rated torque due to load fluctuation is not required. For more detailed information, please refer to Selection Guidelines.
※ The shaft's slip torque may be smaller than the coupling's rated torque depending on the shaft bore. XBS-C
＊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 | 22 | 24 | 25 | 28 | |
| XBSS-15C2A | ● | ● | ● | ● | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| XBSS-19C2A | - | ● | ● | ● | ● | - | - | - | - | - | - | - | - | - | - | - | - | - |
| XBSS-25C2A | - | - | ● | ● | ● | ● | ● | ● | - | - | - | - | - | - | - | - | - | - |
| XBSS-27C2A | - | - | - | ● | ● | ● | ● | ● | ● | - | - | - | - | - | - | - | - | - |
| XBSS-34C3A | - | - | - | ● | ● | ● | ● | ● | ● | ● | ● | - | - | - | - | - | - | - |
| XBSS-39C2A | - | - | - | - | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | - | - | - | - |
| XBSS-44C2A | - | - | - | - | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | - | - | - |
| XBSS-56C3A | - | - | - | - | - | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
● All products are provided with hex socket head cap screw.
● Recommended tolerance for shaft diameters is h6 and h7.
● 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
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 |
|---|---|---|---|---|
|
mm
in.
|
mm
in.
|
Cart |
| 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 | |||||
| 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 |
- Refer to the "Couplicon Bore Diameter Additional Modification Service" for more information.
- BT： Additional modification of bore
- KT： Metric Keyway Modification (JIS Standard)
- KA： Inch Keyway Modification (AGMA Standard)
Slip torque
As in the table below, the clamping types XBS-C and XBSS-C have different slip torque according to the bore diameter. Take care during selection.Unit : N・m
| Part Number | Bore Diameter (mm) | |||||||
|---|---|---|---|---|---|---|---|---|
| 3 | 4 | 6 | 8 | 10 | 11 | 14 | 15 | |
| XBS-15C2 | 1 | |||||||
| XBS-19C2 | 1.6 | |||||||
| XBS-34C3 | 5.2 | 6 | ||||||
| XBS-44C2 | 15 | |||||||
| XBS-56C3 | 25 | 32 | ||||||
| XBS-68C5 | 80 | 100 | ||||||
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 XBS-CXBSS-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.
Unit : N・m
| Part Number | Bore Diameter (mm) | |||||||
|---|---|---|---|---|---|---|---|---|
| 4 | 6 | 8 | 10 | 11 | 12 | 14 | 15 | |
| XBSS-19C2A | 1 | |||||||
| XBSS-34C3A | 5 | |||||||
| XBSS-39C2A | 5.5 | 8 | ||||||
| XBSS-44C2A | 4.5 | 6 | 10 | |||||
| XBSS-56C3A | 9 | 13 | 18 | 25 | 28 | |||
Material/Finish
| XBSS-C | |
|---|---|
| Hub | SUS303 |
| Disk Fixing Bolts | SUSXM7 |
| Disk | SUS304 |
| Collar | SUS304 |
| Hex Socket Head Cap Screw | SUSXM7 |
Characteristics
- Applicable motors
| XBS-C | XBSS-C | |
|---|---|---|
| Servomotor | ◎ | ◎ |
| Stepping Motor | ◎ | ◎ |
| General-purpose Motor | ● | ● |
- Property
| XBS-C | XBSS-C | |
|---|---|---|
| Zero Backlash | ◎ | ◎ |
| High Torque | ○ | ○ |
| High Torsional Stiffness | ◎ | ◎ |
| Allowable Misalignment | ○ | ○ |
| Corrosion Resistance (All S.S.) | - | ◎ |
- This is a disk type flexible coupling.
- It has compact design with short entire length.
- The stainless steel disk allows eccentricity, and angular misalignment, and end-play.
- Wide variation of outside diameter φ 15 - φ 104 and bore diameter φ 3 - φ 50.
- Extra super duralumin (A7075) featuring the highest strength among aluminum alloy is adopted for XBS-C hubs.
- XBSS-Cis the all stainless steel type with stainless steel hubs.
Application
Actuator / Surface-mount machine / High precision XY stage / Index tableSelection
Selection Example
In case of selected parameters of shaft diameter of φ30 and load torque of 40 N•m, the selected size is XBS-68C5.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) |
XBW-C | XBWS-C | |
| Aluminum Alloy Hub | Made of All Stainless Steel | ||||
| 10 | 5 - 6 | 0.032 | 0.096 | XBS-15C | XBSS-15C |
| 20 | 5 - 6 | 0.064 | 0.19 | XBS-15C | XBSS-15C |
| 30 | 5 - 7 | 0.096 | 0.29 | XBS-19C | XBSS-19C |
| 50 | 6 - 8 | 0.16 | 0.48 | XBS-19C | XBSS-19C |
| 100 | 8 | 0.32 | 0.95 | XBS-19C | XBSS-25C |
| 200 | 9 - 14 | 0.64 | 1.9 | XBS-27C | XBSS-34C |
| 400 | 14 | 1.3 | 3.8 | XBS-34C | XBSS-39C |
| 750 | 16 - 19 | 2.4 | 7.2 | XBS-39C | XBSS-56C |
＊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
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 XBS-C and XBSS-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.
Static torsional stiffness comparison (single disc-type)
Related Products
The Single-Disk type Flexible Coupling XHS-C is compatible with the servomotor with 350% instantaneous max. torque is available.XHS-C
