Sakai LAD-C Series Precision Spring Coupling

Manufacturer: Sakai Manufacturing Co., Ltd.
Model: LAD-C Series

Features

  • A unique laminated leaf spring with excellent precision and rigidity has used as the flexure material. Two sets of laminated leaf springs attached to the hub with bolts and high flexibility create a non-backlash structure, achieving high precision and high torque rotation transmission.
  • Two sets of laminated leaf springs sandwiched between spacers absorb eccentricity, angular misalignment, and axial displacement. This precision shaft coupling combines high versatility with high flexibility, easy centering, and high precision rotation transmission.

Specifications

(Dimensions: mm)

Model numberdAPLSJGM
LAD-12CSee LAD-12C dimensional drawing
LAD-15C3~5153.520107.74.6M2
LAD-20C4~8205.524128.96.2M2.5
LAD-25C6~10257.53015118M3
LAD-30C6~143011.53115.511.58M3
LAD-35C8~163512.53517.512.510M3
LAD-40C10~204016402014.610.8M3
LAD-48C10~24481852261718M4
LAD-58C12~25582160302020M5
Model numberAllowable torque N・mAllowable eccentricity mmAllowable deviation angle °Allowable axial displacement mmMaximum rotation speed
min-1
Torsional stiffnessAxial spring constant N/mmMoment of inertia kg・m2Mass g
Overall N・m/radLeaf spring only N・m/rad
LAD-12C0.250.030.5±0.0810000132200100.08×10-64
LAD-15C0.60.030.5±0.0910000196700880.25×10-68
LAD-20C1.30.091±0.25100004901200390.92×10-617
LAD-25C2.80.121±0.31100008821850252.69×10-632
LAD-30C3.60.121±0.391000014704300155.76×10-644
LAD-35C50.141±0.461000029405400251.19×10-568
LAD-40C60.151±0.551000039206300202.28×10-596
LAD-48C120.231±0.6510000600012800290.57×10-4172
LAD-58C250.271±0.79100001200025700291.48×10-4317

*Select the LAD-20LS model for a non-standard through-hole diameter or insufficient insertion depth in the LAD-20C model to a wide mounting interval.

Standard Shaft Hole Diameter

(Unit: mm)

Model numberd
344.5566.357899.525101112141516181920222425
LAD-12C
LAD-15C
LAD-20C🟤
LAD-25C
LAD-30C
LAD-35C
LAD-40C
LAD-48C
LAD-58C
  • LAD-58C is not a standard product (delivery confirmation product).
  • Permissible radial direction variation does not occur misalignment and tilt angle are zero.
  • Permissible misalignment angle limits with simultaneous misalignment and tilt angle.
  • Moment of inertia and mass apply only to the maximum shaft diameter.
  • The drive shaft should not be inserted insecurely, and the specified insertion method must be used to prevent the drive shaft from popping out in non-through hole diameters.
  • 🟤 mark indicates a non-standard hole diameter (delivery confirmation hole diameter).
  • The ● mark indicates a hole diameter through which shaft plates and spacers can pass. (The ◯ mark indicates a non-through hole diameter.)
  • The recommended tightening torque is 6 N·m.
  • The maximum rotation speed does not consider dynamic balance.
  • The ☆ mark indicates compatibility with through-hole diameters.

 

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