Oldham Type Flexible Coupling

MOP (PEEK*)

Merits

Microscopic Levels of Outgas
Clean
High Allowable Misalignment

Can be used with heat and chemical resistant applications and clean environment such as FPD and semiconductor production equipment and devices
Oldham type flexible coupling
Introduce VESPEL for spacer
Excellent Heat Resistance and chemical resistance with microscopic level of outgas
Operational Temperature: -20℃~120℃
Slippage between hubs and spacer allows high parallel and angular misalignments
Minimized load on shaft caused by misalignments
High Torsional Stiffness and High Response
Simple configuration enables ease of assembly
Protruded spacer design enables high allowable angular misalignment
Finished products featuring two different end bore diameters available in stock

Application

Servomotor	-
Stepping Motor	B
General-purpose Motor	A
Encoder	-

Features

Zero Backlash	-
High Torsional Stiffness	B
High Torque	B
Absorption of Misalignment	A
Vibration Absorption	B
Electrical Insulation	A
Corrosion Resistant (All Stainless Steel)	A

A : Excellent B : Very Good

Eccentric Reaction Force / Changes in Static Torsional Stiffness Caused by Temperature / Natural Frequency / Analysis of Outgas / Characteristics of PEEK® / Chemical Resistance of PEEK® [PDF 149KB]

Configuration & Material

*PEEK® is a registered trademark of Victrex, PLC. Color may vary according to production lot.

Dimensions

Specifications

unit:mm
Catalog Number	A	L	W	E	F	G	M	Wrench Torque (N·m)
MOP-20C	20	7	22.1	10	3.5	6.5	M2.5	1	MOP20C.dxf	MOP20C
MOP-25C	25	8	27.2	14	4	9	M3	1.5	MOP25C.dxf	MOP25C
MOP-32C	32	10	33.3	18	5	11	M4	2.5	MOP32C.dxf	MOP32C

Catalog Number	Max. Bore (mm)	Rated Torque (N·m)	Max. Torque (N·m)	Max. Rotational Frequency (min^-1)	Moment of Inertia^* (kg·m²)	Static Torsional Stiffness (N·m/rad)	Errors of Eccentricity (mm)	Errors of Angularity (°)	Mass^* (g)
MOP-20C	8	0.7	1.4	31000	7.4x10^-7	93	1.3	2	13
MOP-25C	10	1.2	2.4	25000	2.2x10^-6	140	1.5	2	24
MOP-32C	14	2.8	5.6	19000	7.3x10^-6	350	2.0	2	48

*Adjustment of rated and maximum torque specifications for load fluctuations is not required.
For more detailed information, please refer to Selection Guidelines [PDF 171KB].
**Moment of inertia and mass figures based on maximum bore dimensions.

Stock Bores

Catalog Number	RoHS	Stock Bores D₁·D₂
MOP-20C	Compliant
MOP-25C	Compliant
MOP-32C	Compliant

●All products come with cap screws.
●Recommended tolerance for shaft diameters is h6 and h7.
●Bore and keyway modifications are available on request. Please take advantage of our bore modification services.
For more information please refer to Custom Bore Modifications [PDF 495KB].