XBWS-C

Specs/CAD

Unit : mm

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

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
XBWS-15C2A	6	0.42	42000	5.0×10-7	300	0.05	1	±0.2	20
XBWS-19C2A	8	0.6	33000	1.6×10-6	550	0.15	2	±0.2	38
XBWS-25C2A	12	1.1	25000	6.1×10-6	1100	0.2	2	±0.4	71
XBWS-27C2A	14	1.3	23000	8.2×10-6	1300	0.2	2	±0.4	88
XBWS-34C3A	16	2.5	18000	2.5×10-5	1800	0.25	2	±0.6	160
XBWS-39C2A	20	4.8	16000	5.1×10-5	3500	0.3	2	±0.6	260
XBWS-44C2A	22	5.6	14000	8.9×10-5	5500	0.3	2	±0.6	400
XBWS-56C3A	28	14	11000	2.9×10-4	10000	0.3	2	±0.8	800

＊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. XBW-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
XBWS-15C2A	●	●	●	●	-	-	-	-	-	-	-	-	-	-	-	-	-	-
XBWS-19C2A	-	●	●	●	●	-	-	-	-	-	-	-	-	-	-	-	-	-
XBWS-25C2A	-	-	●	●	●	●	●	●	-	-	-	-	-	-	-	-	-	-
XBWS-27C2A	-	-	-	●	●	●	●	●	●	-	-	-	-	-	-	-	-	-
XBWS-34C3A	-	-	-	●	●	●	●	●	●	●	●	-	-	-	-	-	-	-
XBWS-39C2A	-	-	-	-	●	●	●	●	●	●	●	●	●	●	-	-	-	-
XBWS-44C2A	-	-	-	-	●	●	●	●	●	●	●	●	●	●	●	-	-	-
XBWS-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.

Slip Torque

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

Structure

Clamping TypeXBWS-C

XBWS-C Made of All Stainless Steel

Material/Finish

Characteristics

• Recommended Applicable Motor

• Property

• This is a disk type flexible coupling.
• The stainless steel disk allows eccentricity, and angular misalignment, and end-play.
• Wide variation of outside diameter φ 15 - φ 56 and bore diameter φ 3 - φ 28.
• All stainless steel type with stainless steel hubs.

Application

Actuator / Surface-mount machine / High precision 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.

Selection Example

In case of selected parameters of shaft diameter of φ15 and load torque of 2 N・m, the selected size is XBWS-34C3A.

Selection Based on the Rated Output of the Servomotor

Eccentric Reaction Force

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 XBWS-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.