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MB - High torque transmission type

MB - High torque transmission type
Ordering form

 

SCM / Centering / 2D CAD / 3D CADInstallation Manual


Features

  1. Total 21 standard models for shaft diameters ranging from φ25 to φ150mm.
  2. High torque transmission.
  3. Centering function.
  4. The tapered portion is difficult to come off due to the gradual taper design.
  5. Straight through-hole bore processing is possible.
  6. Wide design range.

Structure

Structure

Concept of frictional connection

Concept of frictional connection

Material / Surface treatment

  Material Surface treatment
Inner ring SCM -
Outer ring SCM -
Locking screw SCM 435 Black oxidation coating

Comparison of allowable

transmission torque

Comparison of allowable transmission torque

The reason Mecha-lock MB series have higher allowable transmission torque is because they use larger screws than the Mecha-lock MA series.
Larger screw results in higher contact surface pressure, so we employ high yield stress material to prevent Mecha-lock deformation through high contact surface pressure.
MB series are suitable for high transmission structures.

Usage example

Usage example

Installation example

Installation example


Specifications / Sizes

Specifications / Sizes

Unit : mm
Type


      d    D
Maximum
torque
capacity
N·m
Thrust
capacity

kN
Surface
pressure
Moment
of
inertia
kg·m2
Tightening
torque

N·m
Sizes
Shaft
N/mm2
Hub
N/mm2
L L2 L3 L4 A P·C·D
MB-25-47 490 39.2 233 143 1.00×10-4 15.7 34.1 28.1 24.6 18.8 51 38.2
MB-28-50 540 39.2 195 128 1.30×10-4 15.7 35.1 29.1 25.6 19.8 54 41.2
MB-30-52 590 39.2 182 123 1.52×10-4 15.7 35.6 29.6 25.6 19.8 56 43.2
MB-32-54 765 47.1 207 144 1.80×10-4 15.7 36.1 30.1 26.1 20.3 58 45.2
MB-35-57 970 55.0 184 133 2.25×10-4 15.7 37.1 31.1 26.6 20.8 61 48.2
MB-40-68 1460 72.6 278 193 5.12×10-4 39.2 41.6 33.6 29.1 22.5 73 56.8
MB-45-73 1860 82.4 293 173 6.73×10-4 39.2 42.6 34.6 30.1 23.5 78 61.8
MB-50-78 2430 93.2 247 190 9.02×10-4 39.2 43.6 35.6 30.6 24.0 83 66.8
MB-55-83 2570 93.2 214 171 1.12×10-3 39.2 44.6 36.6 31.6 25.0 88 71.8
MB-60-88 2960 99.0 216 181 1.42×10-3 39.2 45.6 37.6 32.6 26.0 93 76.8
MB-65-93 3620 112 197 168 1.74×10-3 39.2 46.1 38.1 33.1 26.5 98 81.8
MB-70-103 5690 159 249 201 2.95×10-3 78.5 50.0 40.0 34.5 27.5 108 89.4
MB-75-108 5980 160 223 185 3.55×10-3 78.5 51.0 41.0 35.5 28.5 113 94.4
MB-80-113 6720 168 238 202 4.30×10-3 78.5 52.0 42.0 36.0 29.0 118 99.4
MB-90-123 8580 190 203 180 5.80×10-3 78.5 53.0 43.0 37.0 30.0 128 110
MB-100-133 10790 216 196 178 7.75×10-3 78.5 54.0 44.0 37.0 30.0 138 120
(*)MB-110-143 12650 230 183 171 1.08×10-2 78.5 55.0 45.0 38.0 31.0 148 130
(*)MB-120-160 21380 312 205 189 1.93×10-2 137.3 64.5 52.5 44.5 36.5 168 144
(*)MB-130-170 22065 323 183 173 2.40×10-2 137.3 65.5 53.5 45.5 37.5 178 154
(*)MB-140-180 25790 329 186 179 3.05×10-2 137.3 67.5 55.5 46.5 38.5 188 164
(*)MB-150-190 27460 366 168 166 3.70×10-2 137.3 68.5 56.5 47.5 39.5 198 174
(*)Order

Shaft / Hub

Unit : mm
Type

      d    D
Locking
screw
Price

¥
Weight

g
Processing
sizes
Yield point stress for each smallest
outer diameter of hub material. HD
Size pcs D2 d2 d3 HL 206 225 245 274 294 343 392
SS400
S10C

S15C

S20C

S30C

S35C

S45C

S55C
MB-25-47 M6×20 8 9,800 250 25 47 25 25 85 83 78 74 71 67 64
MB-28-50 M6×20 8 10,400 265 28 50 28 26 87 85 81 76 76 73 69
MB-30-52 M6×20 8 10,800 295 30 52 30 27 93 90 88 82 80 76 72
MB-32-54 M6×20 10 11,200 336 32 54 32 27 102 98 95 89 87 81 77
MB-35-57 M6×20 10 11,500 392 35 57 35 28 117 112 106 102 98 90 84
MB-40-68 M8×25 10 12,000 488 40 68 40 31 141 133 127 119 115 106 99
MB-45-73 M8×25 10 12,500 605 45 73 45 32 153 146 137 130 127 115 108
MB-50-78 M8×25 12 13,800 705 50 78 50 33 161 158 147 136 134 123 114
MB-55-83 M8×25 12 15,500 735 55 83 55 33 166 164 153 148 141 129 119
MB-60-88 M8×25 14 16,900 792 60 88 60 34 169 165 155 144 142 132 123
MB-65-93 M8×25 14 18,500 851 65 93 65 36 172 166 157 148 147 136 128
MB-70-103 M10×30 12 19,800 1308 70 103 70 39 214 208 203 200 192 173 165
MB-75-108 M10×30 12 21,100 1450 75 108 75 40 233 227 223 216 211 188 171
MB-80-113 M10×30 14 22,400 1620 80 113 80 40 237 233 227 223 221 196 174
MB-90-123 M10×30 14 26,400 1700 90 123 90 41 244 237 231 227 223 202 177
MB-100-133 M10×30 15 29,000 1990 100 133 100 42 258 248 238 235 232 211 200
(*)MB-110-143 M10×30 16 31,700 2300 110 143 110 43 268 259 251 248 246 225 208
(*)MB-120-160 M12×35 16 36,200 3010 120 160 120 46 324 307 293 289 276 252 236
(*)MB-130-170 M12×35 16 40,900 3010 130 170 130 47 344 325 314 298 291 266 248
(*)MB-140-180 M12×35 18 43,600 3660 140 180 140 49 366 346 327 303 298 274 255
(*)MB-150-190 M12×35 18 48,800 4150 150 190 150 50 373 354 333 312 307 284 264
(*)Order
  • Mecha-lock can be manufactured for other motor shaft tolerances (j6.k6.m6). Shaft tolerance should be specified after selecting the type when ordering. [example : MB-30-52(m6)]
  • MB-35-57 is applicable to motor shaft tolerance +0.01.