121 (10G) Type (Dual Clutch)

三木プーリのダブルクラッチユニット 121[10G]タイプ 製品画像（電磁ダブルクラッチ構成・動力切替制御・産業用駆動機器）
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This double-clutch unit features the same through-shaft design as the Type 121 (20) electromagnetic clutch and brake unit, with electromagnetic clutches mounted on both sides of the drum. It can be used with the hub as the input for two-speed transmission or forward/reverse operation, or with the shaft as the input for power distribution and other applications.

[Specifications]

Model Size Dynamic friction torque Td [N·m] Static friction torque Ts [N·m] Coil (at 20°C) Temperature Class Maximum rotational speed [min⁻¹] Rotating mass moment of inertia J [kg·m²] Total work until air gap readjustment ET [J] Armature attraction time ta [s] Torque rise time tp [s] Torque decay time td [s] Mass [kg]
Voltage [V] Power [W] Current [A] Resistance [Ω] When hub input Shaft input
121-06-10G 06 5 5.5 DC24 11 0.46 52 B 3000 1.55×10⁻⁴ 1.05×10⁻⁴ 36×10⁶ C: 0.020 / B: 0.015 C: 0.041 / B: 0.033 C:0.020 / B:0.015 1.7
121-08-10G 08 10 11 DC24 15 0.63 38 B 3000 4.75×10⁻⁴ 3.00×10⁻⁴ 60×10⁶ C: 0.023 / B: 0.016 C:0.051 / B:0.042 C:0.030 / B:0.025 3.1
121-10-10G 10 20 22 DC24 20 0.83 29 B 3000 1.44×10⁻³ 9.45×10⁻⁴ 130×10⁶ C: 0.025 / B: 0.018 C: 0.063 / B: 0.056 C:0.050 / B:0.030 6.5
121-12-10G 12 40 45 DC24 25 1.04 23 B 3000 4.50×10⁻³ 2.75×10⁻³ 250×10⁶ C: 0.040 / B: 0.027 C:0.115 / B:0.090 C:0.065 / B:0.050 10.5
121-16-10G 16 80 90 DC24 35 1.46 16 B 3000 1.34×10⁻² 9.05×10⁻³ 470×10⁶ C: 0.050 / B: 0.035 C:0.160 / B:0.127 C:0.085 / B:0.055 21
121-20-10G 20 160 175 DC24 45 1.88 13 B 2500 4.18×10⁻² 2.65×10⁻² 10×10⁸ C: 0.090 / B: 0.065 C:0.250 / B:0.200 C:0.130 / B:0.070 38.5
121-25-10G 25 320 350 DC24 60 2.50 9.6 B 2000 9.80×10⁻² 7.45×10⁻² 20×10⁸ C: 0.115 / B: 0.085 C:0.335 / B:0.275 C:0.210 / B:0.125 70
  • The dynamic friction torque Td is the value at a relative speed of 100 min⁻¹. Additionally, depending on the initial torque characteristics, a break-in period may be required.
  • The moment of inertia of the rotating assembly during shaft input is equal to the value for a single Type 5 armature.

[Dimensions]

三木プーリのダブルクラッチユニット121モデル10タイプ寸法図 外形寸法および取付寸法を示す寸法図
Size Unit Dimensions
A1 A2 B1 B2 C D E F G H J1 J2 K L M N Z1 Z2
06 52.5 75 80 90 55 80 27.5 53 2.6 95 65.5 40.5 111.5 181 47 33 13.5 6.5
08 65 90 90 105 65 100 27.5 61 2.6 115 78.5 48.5 133 217 57 37 13.5 6.5
10 80 110 110 130 80 125 32.5 72 3.2 142.5 98 58 162 266 72 47 15.5 9
12 105 135 140 160 90 150 35 81 3.2 165 121 71 193 327 92 52 20 11.5
16 135 160 175 185 112 190 42.5 97 4.5 207 149 87.5 232 397 113 62 24.5 11.5
20 155 200 200 230 132 230 45 109 6 247 187 105 290 492 142 74.5 28 14
25 195 240 240 270 160 290 47.5 124 20 305 238 125 350 603 183 101.5 28 14
Size Shaft Dimensions CAD File No.
Q1 Q2 S1 S2 U1 U2 V1 V2 X1 X2 W1,2
06 25 20 11 38 12.5 39.5 M4×0.7, depth 8 3-M4×0.7 depth 4 3-120° 60° 4 121-101
08 30 25 14 45 16 47 M4×0.7, depth 8 3-M4×0.7 depth 6 3-120° 60° 5 121-102
10 40 30 19 55 21 57 M6×1, depth 11 4-M4×0.7, depth 8 4-90° 45° 5 121-103
12 50 40 24 64 27 67 M6×1, depth 11 4-M4×0.7 depth 8 4-90° 45° 7 121-104
16 60 50 28 75 31 78 M6×1, depth 11 6-M5×0.8 depth 8 6-60° 30° 7 121-105
20 80 60 38 90 41.5 93.5 M10×1.5, depth 17 4-M6×1, depth 12 4-90° 45° 10 12 1-106
25 110 70 42 115 45.5 118.5 M10×1.5, depth 17 8-M6×1, depth 12 8-45° 22.5° 12 121-107
  • The input/output keyways comply with the old JIS Type 2 standard, while the keys comply with the old JIS Type 1 standard. Please note that the dimensions of the keyways on the unit hub do not conform to JIS standards. Please refer to the dimension table above.
  • When inserting pulleys or similar components into the input or output, please use the included insertion set.
  • The base of the 121-25-10G is made of cast metal.
三木プーリの121モデル 10タイプ ダブルクラッチユニット ご注文時の型式構成説明図