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-D4 Series download

Structure and Material for SAPL-D4 Series
Model Body (Inner-ring / Outer-ring) Screw(locking bolt)
Material Surface
Treatment
Material Surface
Treatment
SAPL-D4 STEEL - SCM435 Black Oxide

※ Please contact Sung-il Customer Service team for eletroless nickel plating surface treatment option for SAPL-D4 Series.

Product Features
  • Excellent for high-torque transmission capacity
  • Equivalents to SAPL-D1 series with the same dimensions (which is the most standard clamping structure between shaft and hub) in particular to the double-row SAPL-D1 version
  • Self-centering function (prevention of slight off-center matters)
  • Recommended tolerance (Shaft’s OD: h8, Hub’s ID: H8)
Principles
How to Order