Page 226 - MiSUMi FA Mechanical Components Economy Series

Economy Series
Couplings Quality Assurance

2Torsional Rigidity
· Test Benchmark: GB/T10128-2007
· Torsion spring coefficient (N ɾ m / rad):It is the force required to twist the coupling by a unit angle in the direction of rotation, and means
the phase difference between the input shaft and the output shaft in the direction of rotation when torque is applied to the coupling.
· Economy series products have higher torsional rigidity than commercial products. MISUMI uses A7075 hard aluminum, which is more than 1.6
times harder than ordinary A6061 aluminum in the market. As a result, the rigidity of our products is more than 2 times higher than those in the
market. This indicates that high responsiveness and highly accurate rotation control are possible, and torque can be transmitted accurately

Generic products in the market * MISUMI Economy series
Static torsional rigidity 227.32N·m/rad Static torsional rigidity 496.472N·m/rad

4

Motors / Couplings · Static torsional rigidity: refers to the rigidity of a coupling against torsional action, and the greater rigidity

shows higher responsiveness.

Stepper Motors 2Dynamic Torque Fatigue Test

· Performance torque is loaded at maximum angular misalignment to confirm its durability
P.213 · MISUMI Economy series core components use Japanese stainless steel discs and assembly screws,
ensuring precise combination of all components through strict internal assembly management, which
Couplings 2Test Conditions
greatly improves the service life of the product.

P.222 · Load torque: Allowable load
· Lateral misalignment: Maximum lateral misalignment
· Angular misalignment: Maximum angular misalignment
· Test cycle: Forward and reverse rotations every 15 minutes (10 million revolutions in total)

2Test Result
Test
Generic products in the market * MISUMI Economy series Details Generic products MISUMI
in the market * Economy series
Screw loosening and fall-off No changes 1 million
rotations 06 hole slipping No changes
1.5 million 06 hole slipping No changes
rotations
2.5 million 06 & 08 hole / 06 hole /
rotations shaft hole shifting shaft hole shifting
9 million
rotations Disc loosening No changes
10 million Screw loosening
rotations 06 hole edge fall-off No changes
* Generic products in the market are similar products randomly purchased by our company from online or offline markets. The test data are obtained through
testing by our company, which are for reference only.
223