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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-AK-5 x 16 8 11.2 13 16 18.5 11.7 4.6 1.8 244 51 M3x12 4 1.9 18
SAPL-AK-6 x 19 9 12.3 14.3 18.3 21.5 14 10.7 2.6 256 59 M4x12 4 3.9 26
SAPL-AK-6.35 x 20 9 12.3 14.3 18.3 22.5 14.4 10.7 2.6 270 62 M4x12 4 3.9 29
SAPL-AK-7 x 21 9.3 12.6 14.6 18.6 23.5 15.5 12.5 3 257 75 M4x12 4 3.9 35
SAPL-AK-8 x 21 9.3 12.6 14.6 18.6 23.5 15.4 16.6 4.1 244 92 M4x12 4 3.9 35
SAPL-AK-10 x 23 9.5 12.8 14.8 18.8 25.5 17.5 19.6 3.9 192 77 M4x12 4 3.9 40
SAPL-AK-11 x 24 9.5 13.8 15.8 19.8 26.5 18.5 22.5 4 174 73 M4x12 4 3.9 45
SAPL-AK-12 x 26 10.5 15.5 18 22 28.5 20.2 36.2 5.9 239 91 M4x15 6 3.9 53
SAPL-AK-14 x 28 10.5 15.5 18 22 30.5 22.2 50.9 7.2 204 84 M4x15 6 3.9 61
SAPL-AK-15 x 29 11.5 16.5 19 23 31.5 23.2 54.8 7.2 205 90 M4x15 6 3.9 66
SAPL-AK-16 x 30 12 17.1 19.6 23.6 33 24.2 58.8 7.3 193 87 M4x15 6 3.9 75
SAPL-AK-17 x 31 12.5 17.6 20.1 24.1 33.5 25.4 76.4 8.9 205 97 M4x15 8 3.9 75
SAPL-AK-18 x 32 12.5 17.6 20.1 24.1 34.5 26.4 80.3 8.9 166 93 M4x15 8 3.9 80
SAPL-AK-19 x 33 12.5 17.6 20.1 24.1 35.5 27.4 85.2 8.9 184 91 M4x15 8 3.9 81
SAPL-AK-20 x 38 15.3 21.1 24.1 29.1 42 30.8 183 18.3 213 97 M5x18 8 8.8 144
SAPL-AK-22 x 40 15.3 21.1 24.1 29.1 44 32.8 201 18.3 193 92 M5x18 8 8.8 165
SAPL-AK-24 x 42 16.3 22.1 25.1 30.1 46 34.8 252 21 121 105 M5x18 8 8.8 180
SAPL-AK-25 x 43 17.3 23.1 26.1 31.1 47 35.8 264 21.1 212 102 M5x18 8 8.8 188
SAPL-AK-28 x 46 17.3 23.1 26.6 31.6 50 38.8 295 21.1 212 107 M5x18 10 8.8 195
SAPL-AK-30 x 48 17.3 23.1 26.6 31.6 52 40.8 396 26.4 198 102 M5x18 10 8.8 208
SAPL-AK-32 x 50 18.3 24.1 27.6 32.6 54 42.8 423 26 192 103 M5x18 10 8.8 219
SAPL-AK-35 x 57 19.5 26 30 36 62 48.4 548 31.3 207 105 M6x20 8 15.7 325
SAPL-AK-38 x 60 20 26.5 30.5 36.5 65 51.4 741 39 208 110 M6x20 10 15.7 362
SAPL-AK-40 x 62 20.5 27 31 37 67 53.4 779 39 202 110 M6x20 10 15.7 380
SAPL-AK-42 x 64 20.5 27 31 37 69 55.4 823 39.2 192 106 M6x20 10 15.7 405
SAPL-AK-45 x 67 21 27.5 31.5 37.5 72 58.4 882 39.2 184 104 M6x20 10 15.7 435
SAPL-AK-48 x 70 21 27.5 32 38 75 61.4 1117 46.5 206 118 M6x20 12 15.7 460
SAPL-AK-50 x 72 21.5 28 32.5 38.5 77 63.4 1362 54.4 202 119 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.