Torque Limiters TT(01) Types

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Features of Torque Limiters TT(01) Types

Overloads are detected accurately and the drive key removed from the groove to cut off input and output. Once the overload is resolved, operation can continue automatically at the same torque from the same indexing position.Torque is set using a built-in torque spring, so there is no troublesome fine-tuning. The TT-01 type is used for two-shaft butt connection and also serves as a flexible coupling.

Torque Limiters TT(01) Types Specifications

TT (01) Types

TT (01) Types

[Specifications]

Type	Size	Set torque value ［N・m］									Misalignment		Max. rotation speed ［min^-1］	Moment of inertia ［kg・m²］	Mass ［kg］
		Spring color									Parallel	Angular
		Colorless	Blue	Red	Yellow	White	Gray	Green	Brown*	Colorless*	［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 above set torque values listed are measured at a speed of 1500 min^-1.

* Set torque values vary by ± 20%.

*Use components with larger dimensions for applications with the torque marked by [*] requiring enhanced reliability.

[Dimensions]

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 with φ K at 30 mm or more, shape is straight and there are no K1/C1 dimensions.

[Torque coefficient]

[Standard Bore Diameterφ A]

Model	Bore DrillingH Standards	Nominal bore Standards	Standard bore diameter A [mm]
Model	Bore DrillingH Standards	Nominal bore Standards	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	Old JIS standards (E9)	Blank	●	●	●	●	●
	JIS standards (H9)	H		●	●	●	●
	Motor standards	N					●
TT-2-01	Old JIS standards (E9)	Blank			●	●	●	●	●	●	●	●
	JIS standards (H9)	H			●	●	●	●	●	●	●	●
	Motor standards	N					●				●
TT-2X-01	Old JIS standards (E9)	Blank					●	●	●	●	●	●	●	●
	JIS standards (H9)	H					●	●	●	●	●	●	●	●
	Motor standards	N					●				●			●
TT-3-01	Old JIS standards (E9)	Blank								●	●	●	●	●	●	●	●
	JIS standards (H9)	H								●	●	●	●	●	●	●	●
	Motor standards	N									●			●		●
TT-3X-01	Old JIS standards (E9)	Blank									●	●	●	●	●	●	●
	JIS standards (H9)	H									●	●	●	●	●	●	●
	Motor standards	N									●			●		●
TT-4X-01	Old JIS standards (E9)	Blank									●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
	JIS standards (H9)	H									●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
	Motor standards	N									●			●		●				●		●		●

* There is no keyway for bore diameter ø8 mm.

[Standard Bore Diameterφ K]

Model	Bore Drilling Standards	Nominal bore diameter	Standard bore diameter K [mm]
Model	Bore Drilling Standards	Nominal bore 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	Old JIS standards (E9)	Blank	●	●	●	●
	JIS standards (H9)	H		●	●	●
	Motor standards	N
TT-2-01	Old JIS standards (E9)	Blank			●	●	●	●	●
	JIS standards (H9)	H			●	●	●	●	●
	Motor standards	N					●
TT-2X-01	Old JIS standards (E9)	Blank					●	●	●	●	●	●
	JIS standards (H9)	H					●	●	●	●	●
	Motor standards	N					●				●
TT-3-01	Old JIS standards (E9)	Blank								●	●	●	●	●	●
	JIS standards (H9)	H								●	●	●	●	●	●
	Motor standards	N									●			●
TT-3X-01	Old JIS standards (E9)	Blank								●	●	●	●	●	●
	JIS standards (H9)	H								●	●	●	●	●	●
	Motor standards	N									●			●
TT-4X-01	Old JIS standards (E9)	Blank									●	●	●	●	●	●	●	●	●	●	●	●	●
	JIS standards (H9)	H									●	●	●	●	●	●	●	●	●	●	●	●	●
	Motor standards	N									●		●		●				●		●

* There is no keyway for bore diameter ø8 mm.

Options of Torque Limiters TT(01) Types

Optional Signal Pin

Unattended or remotely controlled machines and equipment require equipment that detects an overload and automatically switches off the power or sounds a warning alarm.
An overload can be detected by connecting the signal pin to the torque tender.
When an overload is detected, the input side and the output side are disconnected and the cam mechanism of the torque tender hub pushes the signal pin out in the radial direction. This can be used to switch off the power or sound a warning alarm.
Be sure to use the housing as the input side.
The standard product cannot be modified to connect the signal pin. If you need to
connect the signal pin, add "-P" to the end of the model when you order the product.

Unit (mm)

Size	M	Y	R	N
1X	24	1.5	6.5	5.5
2	29	2.5	5	4.5
2X	36	2.5	5	4.5
3	43	2.5	5	4.5
3X	42	2.5	5	4.5
4X	55	2.5	5	2

Standard Hole-Drilling Standards

*Set screws are included with the product.
*For standard dimensions for bore drilling other than those given here, contact Miki Pulley.
(A bore may not be able to be drilled for some hub sizes.)

Unit [mm]

Models compliant with the old JIS standard (class 2) JIS B 1301 1959				Models compliant with the new JIS standard (H9) JIS B 1301 1996				Models compliant with the motor standard JIS C 4210 2001
Nominal bore diameter	Bore diameter [oA/oK]	Keyway width [W]	Keyway height [T]	Nominal bore diameter	Bore diameter [oA/oK]	Keyway width [W]	Keyway height [T]	Nominal bore diameter	Bore diameter [oA/oK]	Keyway width [W]	Keyway height [T]
	Tolerance H7	Tolerance E9	-		Tolerance H7	Tolerance H9	-		Tolerance G7		-
8	8^+0.015₀	-	-	-	-	-	-	-	-	-	-
10	10^+0.015₀	4^+0.050_+0.020	11.5^+0.5₀	10H	10^+0.015₀	4^+0.030₀	11.8^+0.5₀	-	-	-	-
11	11^+0.018₀	4^+0.050_+0.020	12.5^+0.5₀	11H	11^+0.018₀	4^+0.030₀	12.8^+0.5₀	-	-	-	-
12	12^+0.018₀	4^+0.050_+0.020	13.5^+0.5₀	12H	12^+0.018₀	4^+0.030₀	13.8^+0.5₀	-	-	-	-
14	14^+0.018₀	5^+0.050_+0.020	16.0^+0.5₀	14H	14^+0.018₀	5^+0.030₀	16.3^+0.5₀	14N	14^+0.024_+0.006	5^+0.030₀	16.0^+0.5₀
15	15^+0.018₀	5^+0.050_+0.020	17.0^+0.5₀	15H	15^+0.018₀	5^+0.030₀	17.3^+0.5₀	-	-	-	-
16	16^+0.018₀	5^+0.050_+0.020	18.0^+0.5₀	16H	16^+0.018₀	5^+0.030₀	18.3^+0.5₀	-	-	-	-
18	18^+0.018₀	5^+0.050_+0.020	20.0^+0.5₀	18H	18^+0.018₀	6^+0.030₀	20.8^+0.5₀	-	-	-	-
19	19^+0.021₀	5^+0.050_+0.020	21.0^+0.5₀	19H	19^+0.021₀	6^+0.030₀	21.8^+0.5₀	19N	19^+0.028_+0.007	6^+0.030₀	21.5^+0.5₀
20	20^+0.021₀	5^+0.050_+0.020	22.0^+0.5₀	20H	20^+0.021₀	6^+0.030₀	22.8^+0.5₀	-	-	-	-
22	22^+0.021₀	7^+0.061_+0.025	25.0^+0.5₀	22H	22^+0.021₀	6^+0.030₀	24.8^+0.5₀	-	-	-	-
24	24^+0.021₀	7^+0.061_+0.025	27.0^+0.5₀	24H	24^+0.021₀	8^+0.036₀	27.3^+0.5₀	24N	24^+0.028_+0.007	8^+0.036₀	27.0^+0.5₀
25	25^+0.021₀	7^+0.061_+0.025	28.0^+0.5₀	25H	25^+0.021₀	8^+0.036₀	28.3^+0.5₀	-	-	-	-
28	28^+0.021₀	7^+0.061_+0.025	31.0^+0.5₀	28H	28^+0.021₀	8^+0.036₀	31.3^+0.5₀	28N	28^+0.028_+0.007	8^+0.036₀	31.0^+0.5₀
30	30^+0.021₀	7^+0.061_+0.025	33.0^+0.5₀	30H	30^+0.021₀	8^+0.036₀	33.3^+0.5₀	-	-	-	-
32	32^+0.025₀	10^+0.061_+0.025	35.5^+0.5₀	32H	32^+0.025₀	10^+0.036₀	35.3^+0.5₀	-	-	-	-
35	35^+0.025₀	10^+0.061_+0.025	38.5^+0.5₀	35H	35^+0.025₀	10^+0.036₀	38.3^+0.5₀	-	-	-	-
38	38^+0.025₀	10^+0.061_+0.025	41.5^+0.5₀	38H	38^+0.025₀	10^+0.036₀	41.3^+0.5₀	38N	38^+0.034_+0.009	10^+0.036₀	41.0^+0.5₀
40	40^+0.025₀	10^+0.061_+0.025	43.5^+0.5₀	40H	40^+0.025₀	12^+0.043₀	43.3^+0.5₀	-	-	-	-
42	42^+0.025₀	10^+0.061_+0.025	45.5^+0.5₀	42H	42^+0.025₀	12^+0.043₀	45.3^+0.5₀	42N	42^+0.034_+0.009	12^+0.043₀	45.0^+0.5₀
45	45^+0.025₀	12^+0.075_+0.032	48.5^+0.5₀	45H	45^+0.025₀	14^+0.043₀	48.8^+0.5₀	-	-	-	-
48	48^+0.025₀	12^+0.075_+0.032	51.5^+0.5₀	48H	48^+0.025₀	14^+0.043₀	51.8^+0.5₀	48N	48^+0.034_+0.009	14^+0.043₀	51.5^+0.5₀
50	50^+0.025₀	12^+0.075_+0.032	53.5^+0.5₀	50H	50^+0.025₀	14^+0.043₀	53.8^+0.5₀	-	-	-	-

Related Product

Basic Specifications

Set torque 0.2 N･m to 200 N･m

Max. speed 1800 min^-1 (Depends on size)

Outer diameter 42 mm to 120 mm

Size	M	Y	R	N
1X	24	1.5	6.5	5.5
2	29	2.5	5	4.5
2X	36	2.5	5	4.5
3	43	2.5	5	4.5
3X	42	2.5	5	4.5
4X	55	2.5	5	2

Size	M	Y	R	N
1X	24	1.5	6.5	5.5
2	29	2.5	5	4.5
2X	36	2.5	5	4.5
3	43	2.5	5	4.5
3X	42	2.5	5	4.5
4X	55	2.5	5	2

Size	M	Y	R	N
1X	24	1.5	6.5	5.5
2	29	2.5	5	4.5
2X	36	2.5	5	4.5
3	43	2.5	5	4.5
3X	42	2.5	5	4.5
4X	55	2.5	5	2