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Economy Couplings

Anodized aluminum material
Various specifications available
High torsional elasticity and durability

Product Features

Difference between MISUMI economic type and MISUMI standard products
(based on the same specification of disc type)

	MISUMI Standard Product	MISUMI Economy Type	Market distribution product*
Maximum rotation speed range	500-45000r/min	Below 10000 r/min	Below 10000 r/min
Allowable torque range	0.9-16N-m	1-8N-m	1-8N-m
Body material	A7075 (aviation aluminum)	A7075 (aviation aluminum)	Chinese A6061
Aluminum alloy hardness	150HB	150HB	90HB
Tensile strength	590MPa	570MPa	213MPa

MISUMI Economy Coupling Specifications

MISUMI economy couplings are available in various specifications and shipped within 3 days at the earliest.


	Disc type		Slit type		Jaw type		Oldham type
	MISUMI Economy type	Market Distribution Product*	MISUMI Economy type	Market Distribution Product*	MISUMI Economy type	Market Distribution Product*	MISUMI Economy type	Market Distribution Product*
Shaft hole diameter(φ)	4~25	6~20	2~14	4~14	4~16	8~16	3~14	6~20
Outer diameter(φ)	16~55	20~40	8~40	16~32	14~40	14~40	16~32	20~32
Allowable torque(N-m)	1.0~25	1.0~20	0.1~8	1.0~8	0.7~17	0.7~17	0.7~45	1~4.5

* Market distribution products are similar products purchased randomly by our company in online and offline markets.

Torsional Rigidity

Test standard: GB/T10128-2007.

One side of the coupling is attached to the drive shaft, and the other side is attached to a stationary intermediate shaft, showing a linear connection of 10% -100% of the rated torque per unit plane angle.

MISUMI uses A7075 ultra-high-strength aluminum, which has 1.6 times higher material strength than common A6061 aluminum in the market, twice the product rigidity of market products, and better motor responsiveness.

Market Distribution Product*

Static torque rigidity 227.32N·m/rad

MISUMI Economy Type

Static torque rigidity 496.472N·m/rad

Static torque rigidity: Refers to the magnitude of rigidity against the initial torsion of the coupling.

The higher the rigidity, the better the product's responsiveness.

Dynamic Torque Durability Test

We confirm durability by applying rated torque in the maximum misalignment state.

MISUMI's economic core components use Japanese stainless steel discs and fine screws, and ensure accurate assembly of all parts through thorough internal assembly management, significantly improving product life.

Test Conditions

Load torque: Allowable torque

Misalignment: Maximum eccentricity angle

Eccentricity: Maximum eccentricity

Test cycle: Forward and reverse rotation every 15 minutes (total 10 million rotations)

Test Details	Market Distribution Product	MISUMI Economy Type
1 million rotations	06 hole idle	no change
1.5 million rotations	06 hole idle	no change
2.5 million rotations	06 hole & 08 hole shaft displacement	06 hole shaft displacement
9 million rotations	Disc release	no change
10 million rotations	Screw loose 06 hole missing	no change

※ Market distribution products are similar products purchased randomly by our company in online and offline markets.

※ Experimental data is obtained through our company's inspection and measurement and is provided for reference only.

Design Example

Linear drive mechanism where motor drives ball screw

It is a linear drive mechanism driven by a stepper motor, widely applied in industrial automation production fields such as automotive parts manufacturing, packaging, and medical.