SLEC-A
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 | 3 | 6 | 6.8 | 2.5 | 0.4 | SKX-10 | 10 | 1 | 1 | 0.7 |
| SLEC-M4-A | 4 | 8 | 7 | 3 | 0.4 | SKX-15 | 15 | 1.2 | 1 | 1.6 |
| SLEC-M5-A | 5 | 10 | 8.5 | 4 | 0.4 | SKX-20 | 20 | 1.5 | 1 | 2.6 |
| SLEC-M6-A | 6 | 12 | 10 | 4 | 0.5 | SKX-25 | 25 | 2 | 1 | 5.1 |
| SLEC-M8-A | 8 | 16 | 13 | 5 | 0.8 | SKX-30 | 30 | 2.5 | 1 | 11 |
| SLEC-M10-A | 10 | 20 | 16 | 7 | 1 | SKX-40 | 40 | 3 | 1 | 22 |
| SLEC-M12-A | 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 |
