CF-H [OP] Type | Miki Pulley

Power is transmitted using a polyester resin with elastic properties comparable to those of rubber. This coupling excels in absorbing vibrations and shocks, and offers superior environmental resistance—including heat, cold, and oil resistance—that cannot be achieved with natural rubber. The OP type features a resin element, an aluminum insert, and a spring pin.

[Specifications]

CF-H-OP Specifications

Model	Torque		Tolerance			Maximum Rotational Speed [min⁻¹]	Dynamic torsional spring constant [N·m/rad]	Moment of inertia [kg·m²]	Mass [kg]
Model	Rated [N·m]	Maximum [N·m]	Eccentricity [mm]	Angular offset [°]	Axial [mm]	Maximum Rotational Speed [min⁻¹]	Dynamic torsional spring constant [N·m/rad]	Moment of inertia [kg·m²]	Mass [kg]
CF-H-016-OP	200	400	0.3	0.5	±3	5500	2.46×10⁴	3.0×10⁻³	0.8
CF-H-030-OP	400	800	0.4			4000	5.91×10⁴	9.2×10⁻³	1.5
CF-H-040-OP	600	1200				4000	1.87×10⁵	6.9×10⁻³	1.4
CF-H-050-OP	800	1600				4000	1.91×10⁵	1.2×10⁻²	1.8
CF-H-090-OP	950	1900				4000	2.69×10⁵	1.5×10⁻²	2.3
CF-H-110-OP	1100	2200				4000	2.79×10⁵	2.3×10⁻²	2.8
CF-H-160-OP	1600	3200				3600	5.11×10⁵	3.6×10⁻²	3.4
CF-H-240-OP	2500	5000				3000	5.10×10⁵	0.1	5.8

The maximum rotational speed does not take dynamic balance into account.
Since the dynamic torsional spring characteristics are nonlinear, the dynamic torsional spring constant applies at approximately 20% or more of the rated torque.
As a general rule, the dynamic torsional spring constant is approximately 1.3 times the static torsional spring constant.
The values for moment of inertia and mass apply to cylindrical hubs and flanged hubs with a through-bore.

[Dimensions]

三木プーリのセンタフレックスCF-Hモデル CF-H-OPタイプゴム・樹脂カップリング寸法図（防振・衝撃緩和・柔軟軸継手）

CF-H Dimension Chart

Unit [mm]

Model	d1			d2			D1	D2	N1	N2	L1	L2	L3	A	B	B1	C	E	F	S	TK	M1	M2
Model	Pilot hole	Minimum	Max	Pilot hole	Minimum	Max	D1	D2	N1	N2	L1	L2	L3	A	B	B1	C	E	F	S	TK	M1	M2
CF-H-016	15	16	48	19	20	56	155	150	70	85	52	50	110	41	12	12	60	34	26	8	125	3-M12	3-M12
CF-H-030	20	22	65	28	30	80	205	200	100	120	68	66	144	56	16	15	78	46	35	10	165	3-M16	3-M16
CF-H-040	22	24	50	22	24	65	175	180	85	100	58	56	124	50	16	16	68	42	31	10	140	4-M16	4-M16
CF-H-050	20	22	65	28	30	80	205	200	100	120	68	66	144	56	16	15	78	46	35	10	165	4-M16	4-M16
CF-H-090	20	22	65	28	30	80	215	200	100	120	68	66	144	56	16	15	78	46	35	10	165	4-M16	4-M16
CF-H-110	25	28	63	28	30	80	225	230	100	120	68	66	144	56	18	18	78	46	35	10	180	4-M18	4-M18
CF-H-160	30	32	85	30	32	95	270	260	125	140	84	80	177	59	19	20	97	48	37	13	215	4-M20	4-M20
CF-H-240	40	42	115	40	42	120	330	320	160	180	100	100	213	65	19	20	113	54	40	13	260	4-M20	4-M20

The pilot hole is a drill hole. The minimum values for d1 and d2 indicate the minimum hole diameters specified in our standard hole machining specifications, while the maximum values indicate the largest hole diameters that can be machined.
The TK dimension refers to the bolt mounting pitch diameter of the flange hub or mating mounting surface.

三木プーリのセンタフレックスCF-HモデルOPタイプゴム・樹脂カップリング寸法図外形寸法および主要部寸法を示す寸法図