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MA - Standard type

MA - Standard Type
Ordering form
Carbon steel / Centering / 2D CAD / 3D CADInstallation Manual


High precision Mecha-lock : High-precision MA which has realized hub outer ring runout accuracy of 10µm or less can be custom-made!

Features

  1. Total 34 standard models for shaft iameters ranging from φ5 to φ85mm.
  2. Prevents the off-centering of outer ring due to centering function.
  3. The tapered portion is difficult to come off due to the gradual taper design.
  4. Straight through-hole bore processing is possible.
  5. Wide selection of hub due to thinness and low surface force.

Structure

Structure

Concept of frictional connection

Concept of frictional connection

Material / Surface treatment

  Material Surface
treatment
Inner ring Equivalent to S45C -
Outer ring Equivalent to S45C -
Locking screw SCM 435 Black oxidation coating

Hub axial runout accuracy

Task: Measure the hub axial runout accuracy when Mecha-lock MA series are installed on the shaft and the hub.

Hub axial runout accuracy

Hub axial runout accuracy

Mecha-lock MA series employs counter lock in inner ring and is good in centering.
MA series are suitable for excellent hub axial runout accuracy, although there are individual differences in hub process conditions and Mecha-lock process accuracy.
Note: Values stated above are not guaranteed since they may change with shaft tolerance, hub tolerance, and process methods.

Usage example

Usage example

Installation example

Installation example

Specifications / Sizes

Specifications / Sizes

Unit : mm
Type


      d    D
High
precision
response
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
MA-5-16   7 2.80 249 81 6.27×10-7 1.9 16 13.0 11.2 8.0 18.5 11.7
MA-6-19   14 4.67 318 102 1.36×10-6 3.9 18.3 14.3 12.3 9.0 21.5 14.0
MA-6.35-20   14 4.67 301 97 1.66×10-6 3.9 18.3 14.3 12.3 9.0 22.5 14.35
MA-8-21   22 5.60 239 107 2.03×10-6 3.9 18.6 14.6 12.6 9.3 23.5 15.4
MA-10-23   25 5.60 186 96 2.92×10-6 3.9 18.8 14.8 12.8 9.5 25.5 17.5
MA-11-24   30 5.60 170 92 3.45×10-6 3.9 19.8 15.8 13.8 9.5 26.5 18.4
MA-12-26 50 8.41 233 115 5.37×10-6 3.9 22 18.0 15.5 10.5 28.5 20.2
MA-14-28 65 9.46 225 120 7.07×10-6 3.9 22 18.0 15.5 10.5 30.5 22.2
MA-15-29 70 9.46 186 106 8.58×10-6 3.9 23 19.0 16.5 11.5 31.5 23.2
MA-16-30 75 9.46 166 98 1.02×10-5 3.9 23.6 19.6 17.1 12.0 33.0 24.2
MA-17-31 110 12.6 197 121 1.17×10-5 3.9 24.1 20.1 17.6 12.5 33.5 25.2
MA-18-32 115 12.6 186 118 1.31×10-5 3.9 24.1 20.1 17.6 12.5 34.5 26.2
MA-19-33 120 12.6 177 114 1.46×10-5 3.9 24.1 20.1 17.6 12.5 35.5 27.2
MA-20-38 220 21.6 234 139 3.70×10-5 8.8 29.1 24.1 21.1 15.3 42.0 30.8
MA-22-40 290 26.0 256 159 4.42×10-5 8.8 29.1 24.1 21.1 15.3 44.0 32.8
MA-24-42 320 26.0 217 142 5.45×10-5 8.8 30.1 25.1 22.1 16.3 46.0 34.8
MA-25-43 350 27.2 216 137 6.15×10-5 8.8 31.1 26.1 23.1 17.3 47.0 35.8
MA-28-46 380 27.0 192 127 8.15×10-5 8.8 31.6 26.6 23.1 17.3 50.0 38.8
MA-30-48 410 27.0 179 122 9.45×10-5 8.8 31.6 26.6 23.1 17.3 52.0 40.8
MA-32-50 440 27.0 156 110 1.14×10-4 8.8 32.6 27.6 24.1 18.3 54.0 42.8
MA-35-57   720 41.1 204 138 2.12×10-4 15.7 36 30.0 26 19.5 62.0 48.4
MA-38-60   770 40.2 178 125 2.62×10-4 15.7 36.5 30.5 26.5 20.0 65.0 51.4
MA-40-62   810 40.2 164 118 3.00×10-4 15.7 37 31.0 27 20.5 67.0 53.4
MA-42-64   850 40.2 156 114 3.32×10-4 15.7 37 31.0 27 20.5 69.0 55.4
MA-45-67   1200 52.9 186 140 3.95×10-4 15.7 37.5 31.5 27.5 21.0 72.0 58.4
MA-48-70   1200 48.2 159 123 4.75×10-4 15.7 38 32.0 27.5 21.0 75.0 61.4
MA-50-72   1500 56.3 173 136 5.35×10-4 15.7 38.5 32.5 28 21.5 77.0 63.4
MA-55-77   1600 56.3 158 127 6.80×10-4 15.7 38.5 32.5 28 21.5 83.0 68.4
MA-60-82   1900 60.3 150 125 8.61×10-4 15.7 39.5 33.5 28.5 22.0 87.0 73.4
MA-65-87   2000 60.3 139 118 1.05×10-3 15.7 39.5 33.5 28.5 22.0 92.0 78.4
MA-70-97   3400 94.8 187 152 1.86×10-3 37.3 44.1 36.1 31.1 24.0 103 86.2
MA-75-102   3900 101.5 187 155 2.22×10-3 37.3 44.1 36.1 31.1 24.0 108 91.2
MA-80-107   4100 101.5 166 142 2.67×10-3 37.3 45.1 37.1 32.1 25.0 113 96.2
MA-85-112   4400 101.5 157 135 3.10×10-3 37.3 45.1 37.1 32.1 25.0 118 101.2

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
SS490
S20C

S30C

S35C

S45C

S55C
MA-5-16 M3×10 4 5,300 18 5 16 5 13 25 24 23 22 22 21 20
MA-6-19 M4×12 4 5,300 26 6 19 6 14 33 31 30 29 28 26 25
MA-6.35-20 M4×12 4 5,300 29 6.35 20 6.35 14 34 32 31 29 29 27 26
MA-8-21 M4×12 4 5,300 35 8 21 8 15 38 36 34 32 31 29 28
MA-10-23 M4×12 4 5,500 40 10 23 10 16 39 37 35 34 33 31 30
MA-11-24 M4×12 4 5,800 45 11 24 11 16 39 38 36 35 34 32 31
MA-12-26 M4×15 6 5,900 53 12 26 12 17 49 46 44 41 40 37 36
MA-14-28 M4×15 6 6,000 61 14 28 14 17 55 51 48 45 44 41 39
MA-15-29 M4×15 6 6,400 66 15 29 15 18 52 49 47 44 43 40 39
MA-16-30 M4×15 6 6,500 75 16 30 16 18 51 48 46 44 43 41 39
MA-17-31 M4×15 8 6,500 75 17 31 17 19 61 57 54 50 49 45 43
MA-18-32 M4×15 8 6,700 80 18 32 18 19 62 58 55 51 49 46 44
MA-19-33 M4×15 8 6,700 81 19 33 19 19 62 58 55 52 50 47 45
MA-20-38 M5×18 8 7,000 144 20 38 20 23 87 79 73 67 64 59 56
MA-22-40 M5×18 8 7,200 165 22 40 22 23 112 97 87 78 74 67 62
MA-24-42 M5×18 8 7,300 180 24 42 24 24 98 89 82 75 72 66 62
MA-25-43 M5×18 8 7,600 188 25 43 25 25 96 88 81 75 72 66 62
MA-28-46 M5×18 10 7,900 195 28 46 28 25 95 88 82 76 74 68 65
MA-30-48 M5×18 10 8,200 208 30 48 30 25 95 89 83 78 75 70 67
MA-32-50 M5×18 10 8,400 219 32 50 32 26 91 86 82 77 75 70 67
MA-35-57 M6×20 8 8,500 325 35 57 35 28 129 117 108 100 95 88 83
MA-38-60 M6×20 10 8,600 362 38 60 38 28 122 113 106 99 95 88 84
MA-40-62 M6×20 10 8,900 380 40 62 40 29 119 112 105 99 95 89 85
MA-42-64 M6×20 10 9,100 405 42 64 42 29 120 112 106 100 97 91 87
MA-45-67 M6×20 10 9,500 435 45 67 45 30 154 139 129 118 113 104 98
MA-48-70 M6×20 12 9,800 460 48 70 48 30 140 130 122 114 110 102 97
MA-50-72 M6×20 14 10,600 485 50 72 50 30 160 146 135 125 119 110 104
MA-55-77 M6×20 14 11,200 520 55 77 55 31 159 146 137 128 123 114 108
MA-60-82 M6×20 15 11,900 560 60 82 60 31 166 154 144 135 130 121 115
MA-65-87 M6×20 15 13,200 610 65 87 65 31 167 156 148 138 134 125 119
MA-70-97 M8×25 14 15,800 845 70 97 70 34 250 221 201 182 172 157 147
MA-75-102 M8×25 15 17,200 932 75 102 75 34 272 238 216 194 184 167 155
MA-80-107 M8×25 15 18,500 1100 80 107 80 35 250 225 208 190 182 167 157
MA-85-112 M8×25 15 19,800 1270 85 112 85 35 246 224 209 193 184 170 161
  • 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 : MA-20-38(m6)]
  • MA-35-57 is applicable to motor shaft tolerance +0.01.