CPU Models

These are pin-bushing type couplings whose body is made of aluminum alloy. Backlash is kept extremely low by combining high-precision pins with dry metal.They allow an angle of deflection of 4°. A universal system is used for hub coupling, which makes shaft reaction force due to mounting misalignment extremely small. There is also a damping effect from sliding at the friction surface between the pin and dry metal. A clamp system employing friction is used to mount the coupling on the shaft, making mounting easy.

Features

Specifications

Structure and Materials

Downloads

Friction damping effect

There is a damping effect from sliding at the frictional surface of the pin and metal bush.

Extremely small shaft reaction force

The reaction force caused by mounting error is extremely small thanks to the pin/metal bushing construction.

[Specifications]

Model	Rated torque ［N・m］	Misalignment		Max. rotation speed ［min^-1］	Torsional stiffness ［N・m/rad］	Moment of inertia ［kg・m²］	Mass ［kg］
Model	Rated torque ［N・m］	Parallel ［mm］	Angular ［°］	Max. rotation speed ［min^-1］	Torsional stiffness ［N・m/rad］	Moment of inertia ［kg・m²］	Mass ［kg］
CPU-26-A	2.2	0.3	4	4000	600	3.57×10^-6	0.04
CPU-36-A	10	0.4	4	3500	1350	1.64×10^-5	0.09
CPU-46-A	25	0.5	4	3000	1650	5.33×10^-5	0.19

*Max. rotation speed does not take into account dynamic balance.

*The moment of Inertia and mass are measured for the maximum bore diameter.

[Dimensions]

Model	d1, d2		D	E	L	L1	L2	M	A
Model	Min.	Max.	D	E	L	L1	L2	M	A
CPU-26-A	6	12	26	0.3	36	12	4	M3	9
CPU-36-A	8	18	36	0.3	44	15	4.75	M4	13
CPU-46-A	10	22	46	0.3	54	18	6.5	M5	16

*Insert the shaft to at least the dimension L1. (Note that the shaft cannot go all the way through.)

*The recommended processing tolerance for paired mounting shafts is the h7 class.

[Standard bore diameter]

Model	Standard bore diameters d1, d2 ［mm］
Model	6	6.35	7	8	9	9.525	10	11	12	14	15	16	18	19	20	22
CPU-26-A	●	●	●	●	●	●	●	●	●
CPU-36-A				●	●	●	●	●	●	●	●	●	●
CPU-46-A							●	●	●	●	●	●	●	●	●	●

*Bore diameters between the minimum and maximums shown in the dimensions table are compatible, but bore diameters other than those shown in the above table require a separate bore drilling charge.