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Product
A.P. LOCK
(Keyless Bushing)

A.P. Lock (Keyless Bushing) is a power transmission component that
enables to clamp shaft and hubs (i.e. pulley, gear etc.) simultaneously
through its surface pressure. S.I.M provides diverse options in regards
to size, body material and surface treatment.

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  • INDEX (A.P.LOCK)
  • Selection and Design Guide
  • HOW TO INSTALL
    (SAPL-A, B,C, D1, D2, D3, D4, T Series)
  • HOW TO INSTALL (SAPL-R)
  • HOW TO INSTALL (SAPC, SAPA)

SAPL-A Series

  • SAPL-A-2D (.dwg)
  • SAPL-A-3D (.step)
Dimensions / Performance
Model
d X D
CAD Size (mm) Max.
Permissible
Torque
(Tc) (N·m)
Max.
Permissible
Thrust Load
(Pt) (kN)
Surface Pressure (Mpa) Screw (locking bolt) Mass
(g)
L1 L2 L3 L D1 P.C.D Shaft
(Pi)
Hub
(Po)
Size The no.
of
screws
Fastening
Torque
(N·m)
SAPL-A-5 x 16 8 11.2 13 16 18.5 11.7 7 2.8 249 81 M3x10 4 1.9 18
SAPL-A-6 x 19 9 12.3 14.3 18.3 21.5 14 14 4.7 318 102 M4x12 4 3.9 26
SAPL-A-6.35 x 20 9 12.3 14.3 18.3 22.5 14.4 14 4.7 301 97 M4x12 4 3.9 29
SAPL-A-7 x 21 9.3 12.6 14.6 18.6 23.5 15.5 16 5 250 100 M4x12 4 3.9 35
SAPL-A-8 x 21 9.3 12.6 14.6 18.6 23.5 15.4 22 5.6 239 107 M4x12 4 3.9 35
SAPL-A-10 x 23 9.5 12.8 14.8 18.8 25.5 17.5 25 5.6 186 96 M4x12 4 3.9 40
SAPL-A-11 x 24 9.5 13.8 15.8 19.8 26.5 18.5 30 5.6 170 92 M4x12 4 3.9 45
SAPL-A-12 x 26 10.5 15.5 18 22 28.5 20.2 50 8.4 233 115 M4x15 6 3.9 53
SAPL-A-14 x 28 10.5 15.5 18 22 30.5 22.2 65 9.5 225 120 M4x15 6 3.9 61
SAPL-A-15 x 29 11.5 16.5 19 23 31.5 23.2 70 9.5 186 106 M4x15 6 3.9 66
SAPL-A-16 x 30 12 17.1 19.6 23.6 33 24.2 75 9.5 166 98 M4x15 6 3.9 75
SAPL-A-17 x 31 12.5 17.6 20.1 24.1 33.5 25.4 110 12.6 197 121 M4x15 8 3.9 75
SAPL-A-18 x 32 12.5 17.6 20.1 24.1 34.5 26.4 115 12.6 186 118 M4x15 8 3.9 80
SAPL-A-19 x 33 12.5 17.6 20.1 24.1 35.5 27.4 120 12.6 177 114 M4x15 8 3.9 81
SAPL-A-20 x 38 15.3 21.1 24.1 29.1 42 30.8 220 21.6 234 139 M5x18 8 8.8 144
SAPL-A-22 x 40 15.3 21.1 24.1 29.1 44 32.8 290 26 256 159 M5x18 8 8.8 165
SAPL-A-24 x 42 16.3 22.1 25.1 30.1 46 34.8 320 26 217 142 M5x18 8 8.8 180
SAPL-A-25 x 43 17.3 23.1 26.1 31.1 47 35.8 350 27.2 216 137 M5x18 8 8.8 188
SAPL-A-28 x 46 17.3 23.1 26.6 31.6 50 38.8 380 27 192 127 M5x18 10 8.8 195
SAPL-A-30 x 48 17.3 23.1 26.6 31.6 52 40.8 410 27 179 122 M5x18 10 8.8 208
SAPL-A-32 x 50 18.3 24.1 27.6 32.6 54 42.8 440 27 156 110 M5x18 10 8.8 219
SAPL-A-35 x 57 19.5 26 30 36 62 48.4 720 41.1 204 138 M6x20 8 15.7 325
SAPL-A-38 x 60 20 26.5 30.5 36.5 65 51.4 770 40.2 178 125 M6x20 10 15.7 362
SAPL-A-40 x 62 20.5 27 31 37 67 53.4 810 40.2 164 118 M6x20 10 15.7 380
SAPL-A-42 x 64 20.5 27 31 37 69 55.4 850 50.2 156 114 M6x20 10 15.7 405
SAPL-A-45 x 67 21 27.5 31.5 37.5 72 58.4 1200 52.9 186 140 M6x20 10 15.7 435
SAPL-A-48 x 70 21 27.5 32 38 75 61.4 1200 48.2 159 123 M6x20 12 15.7 460
SAPL-A-50 x 72 21.5 28 32.5 38.5 77 63.4 1500 56.3 173 136 M6x20 14 15.7 485
  • Pt(Max. Permissible Thrust Load) indicates values at the zero(0) torque, and Tc(Max. Permissible Torque) at the zero(0) thrust load respectively. In case torque and thrust load occur simultaneously, please refer to the formula in the [Selection guide] page for combined load calculation.
  • For the best performance, make sure all foreign substances e.g. corrosion, dust etc. are removed from each surface of shaft, hub, and A.P. Lock’s inner and outer ring.