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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)

SAPA Series

  • SAPA-2D (.dwg)
  • SAPA-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)
L L2 L3 L4 D1 P.C.D Shaft
(Pi)		 Hub
(Po)		 Size The no.
of
screws		 Fastening
Torque
(N·m)
SAPA-5-16 16 13 11.2 8 18.5 11.7 6 2.24 197 64 M3 4 2.3 7
SAPA-6-19 18.3 14.3 12.3 9 21.5 14 11 3.74 285 92 M4 4 5.1 10
SAPA-8-21 18.6 14.6 12.6 9.3 23.5 15.4 18 4.48 214 96 M4 4 5.1 13
SAPA-10-23 18.8 14.8 12.8 9.5 25.5 17.5 20 4.48 167 86 M4 4 5.1 15
SAPA-11-24 19.8 15.8 13.8 10.5 26.5 18.4 24 4.48 153 83 M4 4 5.1 17
SAPA-12-26 22 18 15.5 10.5 28.5 20.2 40 6.73 209 103 M4 6 5.1 20
SAPA-14-28 22 18 15.5 10.5 30.5 22.2 52 7.57 202 108 M4 6 5.1 23
SAPA-15-29 23 19 16.5 11.5 31.5 23.2 56 7.57 167 95 M4 6 5.1 25
SAPA-16-30 23.6 19.6 17.1 12 33 24.2 60 7.57 149 88 M4 6 5.1 28
SAPA-17-31 24.1 20.1 17.6 12.5 33.5 25.4 88 10.08 177 109 M4 8 5.1 28
SAPA-18-32 24.1 20.1 17.6 12.5 34.5 26.4 92 10.08 167 106 M4 8 5.1 30
SAPA-19-33 24.1 20.1 17.6 12.5 35.5 27.4 96 10.08 159 102 M4 8 5.1 31
SAPA-20-38 29.1 24.1 21.1 15.3 42 30.8 176 17.28 186 111 M5 8 10 53
SAPA-22-40 29.1 24.1 21.1 15.3 44 32.8 232 20.8 204 126 M5 8 10 60
SAPA-24-42 30.1 25.1 22.1 16.3 46 34.8 256 20.8 173 113 M5 8 10 65
SAPA-25-43 31.1 26.1 23.1 17.3 47 35.8 270 21.76 172 109 M5 8 10 68
SAPA-28-46 31.6 26.6 23.1 17.3 50 38.8 290 21.6 153 101 M5 10 10 71
SAPA-30-48 31.6 26.6 23.1 17.3 52 40.8 320 21.6 142 97 M5 10 10 76
SAPA-32-50 32.6 27.6 24.1 18.3 54 42.8 352 21.6 124 88 M5 10 10 80
SAPA-35-57 36 30 26 19.5 62 48.4 576 32.88 195 132 M6 8 18 117
  • 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.