Couplings that can be used in special environments such as clean room, vacuum, high temperature (80 ° C or higher) are available.

Type	Slit Coupling			Oldham Coupling		Disk Coupling
Shape
Part Number	XSTS	XWSS	MSXP	MOHS	MOP	XBWS＊	XBSS＊
Material	SUS316L	SUS316L	PEEK	SUS303 Vespel＊＊ SUSXM7	A2017 PEEK SUSXM7	SUS303 SUSXM7	SUS303 SUSXM7
Cleaning method	Ultrasonic cleaning	Ultrasonic cleaning	Ultrasonic cleaning	Ultrasonic cleaning	Ultrasonic cleaning	Ultrasonic cleaning＊	Ultrasonic cleaning＊
Low particle	◎	◎	◎	△	△	○	○
Vacuum-supported	○	○	○	◎	◎	○	○
Less outgas	○	○	○	○	○	○	○
Heat resistant	○	○	○	◎	◎	○	○
Chemical resistant	◎	◎	◎	○	○	○	○
Zero Backlash	◎	◎	◎			◎	◎
High torque	○	○				○	○
High torsional rigidity						◎	◎
Allowable Misalignment	○		○	◎	◎	○	○

◎:Excellent　○:Very good　△:Abrasion powder may be produced
＊XBWS XBSS are uncleaned products.Clean washing and clean packaging are available upon request.
＊＊VESPEL is a registered trademark of U.S. company DuPont.

● Low particle

The amount of attached particle is ultra low.
This is directly available in a cleanroom. This does not bring contaminated matters into a cleanroom.

● Vacuum-supported

A material with which outgas production in a vacuum environment is small is used.
If misalignment becomes larger due to vacuum pressure difference,MOHS MOP, for which larger misalignment is permitted, are recommended.

● Less outgas

Materials with which production of outgas that causes chemical contamination under atmospheric environment is small are used.

● Heat resistant

This is available even in an environment of high temperature（ 80℃ or higher）
Elongation or deflection of a shaft associated with thermal expansion may increase misalignment. If misalignment becomes larger, MOHS MOP, for which larger misalignment is permitted, is recommended.

● Chemical resistant

Materials superior in chemical resistance are used.

Analysis of outgas

Change in static torsional stiffness due to temperature

This is a value for each product under the condition where the static torsional stiffness at 20°C is 100%.