TT (01) 2-axis butt-joint type

In the event of an overload, the drive key disengages from the groove to disconnect the input and output, thereby protecting the equipment. Once the overload is removed, the coupling automatically reengages at the same torque and indexing position. This type is used for two-shaft alignment and also functions as a flexible coupling.

[Specifications]

TT Specifications

Model	Size	Rated Torque [N·m] (at 1500 min⁻¹)									Permissible Mounting Tolerance		Maximum Rotational Speed [^rpm]	Moment of Inertia [kg·m²]	Mass [kg]
											Eccentricity	Angular Deviation
											[mm]	［°］
TT-1X-01	1X	0.2	0.5	1.0	1.5	2.0	2.5	3.0	3.5^*	4.0^*	0.2	0.5	1800	0.06 × 10^⁽⁻³⁾	0.3
TT-2-01	2	1	2	3	4	5	6	7	8^*	10^*	0.2	0.5	1800	0.26 × 10^⁽⁻³⁾	0.7
TT-2X-01	2X	2	3	5	8	10	12	15	18^*	20^*	0.2	0.5	1800	0.52 × 10^⁽⁻³⁾	1.0
TT-3-01	3	5	8	10	15	20	25	30	35^*	40^*	0.2	0.5	1800	1.23 × 10^⁽⁻³⁾	1.5
TT-3X-01	3X	10	16	20	30	40	50	60	70^*	80^*	0.2	0.5	1800	1.94 × 10^⁽⁻³⁾	2.7
TT-4X-01	4X	20	30	50	80	100	120	150	180^*	200^*	0.2	0.5	500	14.8 × 10^⁽⁻³⁾	6.3

The torque values listed in the table above are for a rotational speed of 1500 rpm.
The set torque value may vary by approximately ±20%.
* If durability is required at a specific torque level, please select a larger size.

[Dimensions]

三木プーリのTT2軸突合せ用TT01モデル過負荷保護装置寸法図外形寸法および取付寸法を示す寸法図

Unit [mm]

Size	K1	B	C	C1	D	E	F	G	H	I	J	L	N	M1	M2
1X	12.5	20	30	23	42	15	30	5	25	22	3	50	6	2-M4	2-M4
2	16.5	24.5	41.5	32.5	55	20	35	11	35	32	5	66	7	2-M5	2-M5
2X	20.5	31	45	34	65	25	40	11	40	38	5	76	8	2-M5	2-M5
3	25.5	37.5	53.5	40	75	30	50	11	45	45	5	91	10	2-M6	2-M6
3X	25.5	36	85	41	75	30	80	11	45	45	6	121	10	2-M6	2-M6
4X	28.5	46	95	60	120	35	90	16	80	80	8	141	12	2-M10	2-M10

For size 4X, if the φK is 30 mm or greater, the shape is straight, and there are no K1 or C1 dimensions.

[Torque Coefficient]

Correction factor a to be considered when the rotational speed of the mounting shaft is 1500 min⁻¹ or less

　　　　　　　　　　　　　　　　　You must select a model whose operating torque is close to the correction factor a for the operating shaft speed.

[Standard Hole Diameter φ A]

Unit [mm]

Model	Hole Specifications	Nominal Hole Diameter	Standard Hole Diameter A [mm]
Model	Hole Specifications	Nominal Hole Diameter	8	10	11	12	14	15	16	18	19	20	22	24	25	28	30	32	35	38	40	42	45	48	50
TT-1X-01	Compliant with JIS Old Standard E9	Unmarked	●	●	●	●	●
	Compliant with JIS Standard H9	H		●	●	●	●
	Compliant with motor standards	N					●
TT-2-01	Compliant with JIS Old Standard E9	Unspecified			●	●	●	●	●	●	●	●
	Compliant with JIS Standard H9	H			●	●	●	●	●	●	●	●
	Compliant with motor standards	N					●				●
TT-2X-01	Compliant with JIS Old Standard E9	Unmarked					●	●	●	●	●	●	●	●
	Compliant with JIS Standard H9	H					●	●	●	●	●	●	●	●
	Compliant with motor standards	N					●				●			●
TT-3-01	Compliant with JIS Old Standard E9	Unmarked								●	●	●	●	●	●	●	●
	Compliant with JIS Standard H9	H								●	●	●	●	●	●	●	●
	Compliant with motor standards	N									●			●		●
TT-3X-01	Compliant with JIS Old Standard E9	Unmarked									●	●	●	●	●	●	●
	Compliant with JIS Standard H9	H									●	●	●	●	●	●	●
	Compliant with motor standards	N									●			●		●
TT-4X-01	Compliant with JIS Old Standard E9	Unmarked									●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
	Compliant with JIS Standard H9	H									●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
	Compliant with motor standards	N									●			●		●				●		●		●

The 8mm-diameter hole does not have a keyway.

[Standard Hole Diameter φ K]

Unit [mm]

Model	Hole Specifications	Nominal Hole Diameter	Standard Hole Diameter K [mm]
Model	Hole Specifications	Nominal hole diameter	8	10	11	12	14	15	16	18	19	20	22	24	25	28	30	32	35	38	40	42	45	48	50
TT-1X-01	Compliant with JIS Old Standard E9	Unmarked	●	●	●	●
	Compliant with JIS Standard H9	H		●	●	●
	Compliant with motor standards	N
TT-2-01	Compliant with JIS Old Standard E9	Unspecified			●	●	●	●	●
	Compliant with JIS Standard H9	H			●	●	●	●	●
	Compliant with motor standards	N					●
TT-2X-01	Compliant with JIS Old Standard E9	Unmarked					●	●	●	●	●	●
	Compliant with JIS Standard H9	H					●	●	●	●	●
	Compliant with motor standards	N					●				●
TT-3-01	Compliant with JIS Old Standard E9	Unmarked								●	●	●	●	●	●
	Compliant with JIS Standard H9	H								●	●	●	●	●	●
	Compliant with motor standards	N									●			●
TT-3X-01	Compliant with JIS Old Standard E9	Unmarked								●	●	●	●	●	●
	Compliant with JIS Standard H9	H								●	●	●	●	●	●
	Compliant with motor standards	N									●			●
TT-4X-01	Compliant with JIS Old Standard E9	Unmarked									●	●	●	●	●	●	●	●	●	●	●	●	●
	Compliant with JIS Standard H9	H									●	●	●	●	●	●	●	●	●	●	●	●	●
	Compliant with motor standards	N									●		●		●				●		●

The 8mm-diameter hole does not have a keyway.

三木プーリのTT01モデル過負荷保護装置（TT2軸突合せ用）ご注文時の型式構成説明図