TT-□-03 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-03 type is used for wrapping. The shaft is inserted into the hub, and the pulley, gears and the like are set in the housing.

TT-□-03 Types

[Specifications]

Type Size Set torque value [N・m] Max. rotation speed [min-1 Moment of inertia [kg・m2 Mass [kg]
Spring color
Colorless Blue Red Yellow White Gray Green Brown* Colorless*
TT-1X-03 1X 0.2 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 1800 0.09×10-3 0.4
TT-2-03 2 1 2 3 4 5 6 7 8 10 1800 0.31×10-3 0.8
TT-2X-03 2X 2 3 5 8 10 12 15 18 20 1800 0.66×10-3 1.1
TT-3-03 3 5 8 10 15 20 25 30 35 40 1800 1.59×10-3 1.7
TT-3X-03 3X 10 16 20 30 40 50 60 70 80 1800 2.43×10-3 3.0
TT-4X-03 4X 20 30 50 80 100 120 150 180 200 500 15.8×10-3 6.5

*The above set torque values listed are measured at a speed of 1500 min-1.

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

[Dimensions]

Unit [mm]
Size Shaft bore dimensions in compliance with the new JIS standards K
1X 10, 11, 12
2 11, 12, 14, 15, 16
2X 14, 15, 16, 18, 19
3 18, 19, 20, 22, 24, 25
3X 18, 19, 20, 22, 24, 25
4X 19, 20, 22, 24, 25, 28, 30, 32, 35, 38, 40, 42, 45
Unit [mm]
Size Shaft bore dimensions in compliance with the old JIS standards K
1X 8, 10, 11, 12
2 11, 12, 14, 15, 16
2X 14, 15, 16, 18, 19, 20
3 18, 19, 20, 22, 24, 25
3X 18, 19, 20, 22, 24, 25
4X 19, 20, 22, 24, 25, 28, 30, 32, 35, 38, 40, 42, 45

* There is no keyway for bore diameter o8 mm.

* See below for details on bore drilling standards.

Unit [mm]
Size K1 B D E F H N L P S T U M
1X 12.5 34 42 20 35 30 25 55 16 14 2.5 4 2-M4
2 16.5 38 55 25 40 40 30 65 20 18 3 5 2-M5
2X 20.5 40 65 25 45 45 31 70 20 18 3 5 2-M5
3 25.5 52.5 75 35 55 60 45 90 30 28 4 7 2-M6
3X 25.5 75 75 35 90 60 45 125 30 28 4 7 2-M6
4X 46 100 120 50 90 85 57 140 45 40 4.5 12 2-M8

* The outer diameter key (old JIS class 2) and stop ring are included accessories.

[Standard Hole-drilling Standards]

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