L Model

三木プーリのLK/LA/LB/LCタイプ 中間車製品画像（ベルト式無段変速機用・伝動補助機構）
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In belt-driven power transmission systems, this device is positioned between the drive shaft and the driven shaft; by adjusting its position, it allows for gear shifting without changing the distance between the drive and driven shafts. It is an intermediate variable-pitch pulley that shifts gears via lever operation.

[Specifications]

Model LA-100 LB-140 LB-160 LC-210 LC-260
Belt used Single A-belt Single B-belt Single C-belt
Gear Ratio 1:2 1:4 1:2 1:4 1:2
Transmission capacity [kW] 0.2 0.2–0.4 0.4–0.75 0.75 1.5–2.2
Driven shaft speed Maximum Intermediate Minimum Max Medium Lowest Highest Median Lowest Highest Median Lowest Highest Median Lowest Highest Median Lowest Highest Median Lowest
Transmission Capacity [kW] Motor Pulley Outer Diameter (inches) 2 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18
Motor Pulley Outer Diameter (inches) 2 1/2 0.3 0.3 0.26 0.3 0.3 0.18 0.3 0.3 0.18
Motor Pulley Outer Diameter (inches) 3 0.38 0.38 0.3 0.37 0.37 0.22 0.37 0.37 0.22
Motor Pulley Outer Diameter (inches) 3 1/2 0.45 0.67 0.26 0.52 0.67 0.26 0.52 0.52 0.52 0.52 0.52 0.45 0.52 0.52 0.52
Motor Pulley Outer Diameter (inches) 4 0.52 0.9 0.3 0.6 0.9 0.3 0.9 0.9 0.67 0.67 0.67 0.45 0.67 0.67 0.67
Motor Pulley Outer Diameter (inches) 4 1/2 0.6 1.05 0.33 0.67 1.12 0.33 1.05 1.05 0.75 0.97 1.05 0.45 1.05 1.05 0.75
Motor Pulley Outer Diameter (inches) 5 0.75 1.27 0.37 1.12 1.42 0.75 1.12 1.42 0.52 1.42 1.42 0.82 1.35 1.35 1.35
Motor Pulley Outer Diameter (inches) 5 1/2 0.82 1.35 0.41 1.27 1.57 0.9 1.2 1.8 0.6 1.8 1.8 0.9
Motor Pulley Outer Diameter (inches) 6 0.9 1.42 0.45 1.35 1.65 0.9 1.27 2.25 0.67 1.95 2.25 0.97 2.25 2.25 2.25
Motor Pulley Outer Diameter (inches) 6 1/2 1.35 2.4 0.67 2.1 2.62 1.05
Motor Pulley Outer Diameter (inches) 7 1.5 2.47 0.75 2.25 3.0 1.12 3.37 3.37 2.4
Motor Pulley Outer Diameter (inches) 8 3.52 3.52 2.47
Weight [kg] 3.9 7.6 15 21 37
  • LK-110 (weight: 4 kg) Power transmission capacity: 0.1 kW. When using Belt M, the gear ratio is 1:5.

[Dimensions]

三木プーリの中間車LK／LA／LB／LCモデルベルト式無段変速機寸法図 外形寸法および軸径寸法を示す寸法図
Unit [mm]
Model A B C E F G H N P Q R S T U M K θ[°] CAD File No.
LK - 110 116 105 58 165 125 24 105 29 23 25 18 11×30 200 327 80 24 32 L2
LA - 100 103 105 58 165 120 24 104 23 19 25 18 11×30 200 327 79 - 16 L3
^*1 lb - 140 140 120 75 185 140 27 118 19 25 42 20 11×28 235 356 98.5 - 33 L5
^*1LB - 160 170 140 87 222 153 33 138 25 29 54 21 11×40 260 440 116 - 35 L6
*1 lb - 160 170 140 87 222 153 33 138 25 29 54 21 11×40 260 440 127 - 19
^*1LC - 210 212 155 104 262 191 42 162 20 37 67 28 14×56 290 472 142 - 39 L7
^*1LC - 260 260 218 121 320 236 42 197 27 43 84 28 19×67 380 531 174 - 37 L8
260 218 121 320 236 42 197 27 43 84 28 19×67 380 531 188 - 21
  • * Models marked with an asterisk (*) include a tension pulley (J=φ70).
  • *Please calculate C1 and C2 (marked with *2) after referring to the design verification items.
  • M: Intermediate pitch diameter
三木プーリのLK/LA/LB/LCモデル 中間車（ベルト式無段変速機）ご注文時の型式構成説明図