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三木プーリのセンタフレックスCMモデル CMタイプゴム・樹脂カップリング製品画像（防振・衝撃吸収・柔軟軸継手）

This engine coupling uses highly elastic rubber to transmit power and excels at absorbing vibrations and shocks. It is extremely flexible in the torsional direction, allowing it to avoid resonance points caused by torsional vibrations at engine speeds below idle. Its short axial length enables easy connection and disconnection of the input and output shafts with just a small axial movement.

[Specifications]

CM-S1 Specifications

Model	Rubber hardness 50SH				Rubber Hardness 60SH				Tolerance		Maximum Rotational Speed [min-1]	Compatible Flange Size SAE J620
	Torque			Dynamic torsional spring constant [N·m/rad]	Torque			Dynamic torsional spring constant [N·m/rad]	Eccentricity [mm]	Eccentric angle [°]
	Rated [N·m]	Maximum [N·m]	Permissible fluctuation [N·m/10 Hz]	Dynamic torsional spring constant [N·m/rad]	Rated [N·m]	Maximum [N·m]	Permissible fluctuation [N·m/10 Hz]	Dynamic torsional spring constant [N·m/rad]	Eccentricity [mm]	Eccentric angle [°]
CM-800-S1	700	1400	280	2.80×10³	850	1,700	340	4.20×10³	0.5	0.5	3600	10, 11 1/2, 14
CM-1200-S1	1000	2000	400	4.50×10³	1200	2400	480	7.00×10³	0.5	0.5	3500	11 1/2・14
CM-2400-S1	2000	4000	800	1.00×10⁴	2500	5000	1000	1.50×10⁴	0.5	0.5	3000	14
CM-2800-S1	2800	6000	1120	2.50×10⁴	3000	7,500	1200	3.75×10⁴	0.5	0.5	3000	14
CM-3000-S1	3000	6000	1200	1.00×10⁴	3300	7000	1,300	1.51×10⁴	0.5	0.5	3,000	14・18
CM-3500-S1	3200	6500	1280	1.60×10⁴	3500	8000	1,400	2.40×10⁴	0.5	0.5	3000	14–18
CM-4000-S1	－	－	－	－	4500	11,000	1800	5.00×10⁴	0.5	0.5	3,000	14・18
CM-5000-S1	4500	9000	1800	1.70×10⁴	5000	10,000	2,000	2.70×10⁴	0.5	0.5	3,000	14・18
CM-7000-S1	6300	12,600	2520	2.85×10⁴	7000	14,000	2,800	4.50×10⁴	0.5	0.5	2,500	18
CM-8000-S1	－	－	－	－	9000	22,000	3,600	8.00×10⁴	0.5	0.5	2,500	18・21
CM-18000-S1	16,000	32,000	6400	1.15×10⁵	18,000	36,000	7,200	1.70×10⁵	0.5	0.5	2,300	21

The maximum rotational speed is based on the smallest flange size. Additionally, dynamic balance has not been taken into account.

[Dimensions]

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

CM Dimension Chart

Unit [mm]

Model	Compatible Flange Size SAE J620	A		C	d1	D1	E	L	L1	N	M
Model	Compatible Flange Size SAE J620	Pilot hole	Max	C	d1	D1	E	L	L1	N	M
CM-800	10	50	82±2	18	70	316	18	84	66	107	8-M10
	111/2	39	71±3	18	70	318	18	84	66	107	8-M10
	14	46	74±6	18	70	318	18	84	66	107	8-M10
CM-1200	111/2	39	65±4	18	70	318	18	84	66	107	8-M10
	14	46	74±1	18	70	318	18	84	66	107	8-M10
CM-2400	14	61	85+8-2	28	105	417	16	96	75	150	8-M12
CM-2800	14	61	130±4	33	110	417	71	126	100	162	8-M16
CM-3000	14/18	70	135±8	19	65	465	53	135	105	100	12-M12
CM-3500	14･18	70	135±6	33	110	465	59	139	100	162	8-M16
CM-4000	14·18	70	161±6	48	140	465	94	159	125	218	12-M16
CM-5000	14･18	70	147±2	35	110	465	64	159	105	162	12-M16
CM-7000	18	80	159±9	48	140	570	76	161	125	218	12-M16
CM-8000	18	90	197±5	68	175	600	110	195	150	248	12-M20
	21		197±5	68		584	110	195	150	248	12-M20
CM-18000	21	141	310±9	70	175	680	176	306	200	248	24-M20

Compatible Flange Size Chart

Unit [mm]
Compatible Flange Nominal Size	10	11	14	18	21
Compatible Flange Size SAE J620	10	11 1/2	14	18	21
Tue	314.3	352.4	466.7	571.5	673.1
DT	295.3	333.4	438.2	542.9	641.4
Z	8×45°	8×45°	8×45°	6×60°	12×30°
S	11	11	13	17	17

The drive-side outer ring is dimensioned to mount directly onto an SAE J620 flywheel.

三木プーリのセンタフレックスCMモデルゴム・樹脂カップリングご注文時の型式構成説明図