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SLEC-A-EL | TKK Corporation


SLEC-A-EL


Clamping Screws with Eccentric Head

Dimension Drawing

Dimensions/Specifications/CAD

Part Number M L D1 L1 e Key Part No. Hexalobular Socket No. t Qty per Pack Mass (g)
SLEC-M3-A-EL 3 6 6.8 2.5 0.4 SKX-10 10 1 1 0.7
SLEC-M4-A-EL 4 8 7 3 0.4 SKX-15 15 1.2 1 1.6
SLEC-M5-A-EL 5 10 8.5 4 0.4 SKX-20 20 1.5 1 2.6
SLEC-M6-A-EL 6 12 10 4 0.5 SKX-25 25 2 1 5.1
SLEC-M8-A-EL 8 16 13 5 0.8 SKX-30 30 2.5 1 11
SLEC-M10-A-EL 10 20 16 7 1 SKX-40 40 3 1 22
SLEC-M12-A-EL 12 24 18 8 1 SKX-45 45 3.5 1 32

Material/Finish

SLEC-A SLEC-A-EL
Main Body SCM435 Ferrosoferric Oxide Coating SCM435 Electroless Nickel Plating
Strength Class 10.9 10.9

*The hexalobular shape is prescribed by JIS B 1015:2008(ISO 10664:2005)“Hexalobular internal driving feature for bolts and screws”.

Application

Fixing linear guideway rails, workpieces, and tools

Characteristics

  • When the screw is tightened, the workpiece is strongly clamped by the head, which is decentered from the shaft center of the screw. The wedging effect creates a large clamping force with a low tightening torque.
  • The screws has a hexalobular socket* that can withstand a high tightening torque.
  • Install and remove by using SKX Special Key.
  • For fixing linear guideway rails.
  • SLEC-A-EL is an electroless nickel(EN)plating type.
    For applications that require corrosion resistance.
  • Also, SLEC-B Clamping Screw with Eccentric Head, which has a guide section below the neck is available.

Usage example

Fixing Linear Guideway Rails

Mounting method

Mounting method

Part Number Part Number E M Adjustment Range min./max.
SLEC-M3-A SLEC-M3-A-EL 3.10~+0.3 M3 -0.142857143
SLEC-M4-A SLEC-M4-A-EL 3.150~+0.3 M4 -0.066666667
SLEC-M5-A SLEC-M5-A-EL 3.90~+0.3 M5 -0.066666667
SLEC-M6-A SLEC-M6-A-EL 4.650~+0.3 M6 -0.176470588
SLEC-M8-A SLEC-M8-A-EL 6.050~+0.5 M8 -0.28
SLEC-M10-A SLEC-M10-A-EL 7.50~+0.5 M10 -0.333333333
SLEC-M12-A SLEC-M12-A-EL 8.50~+0.5 M12 -0.333333333

Recommended size of linear guideway rail

Nominal of Rail Rail Width W with Clamping Screws with Eccentric Head  
#9 9 SLEC-M3-A SLEC-M4-A
#12 12 SLEC-M3-A SLEC-M4-A
#15 15 SLEC-M3-A SLEC-M4-A
#20 20 SLEC-M4-A SLEC-M5-A
#25 23 SLEC-M5-A SLEC-M6-A
#30 28 SLEC-M6-A SLEC-M8-A
#35 34 SLEC-M8-A SLEC-M10-A
#45 45 SLEC-M10-A SLEC-M12-A
#55 53 SLEC-M12-A
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