Clamp Levers
Product name | Clamp Levers - Threaded |
Part number | CLMS4-25-S |
Features | The most generally used Clamp Levers |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Select the clamp lever considering the operability for securing claws after setting up their position
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Available sizes
■Clamp Levers - Threaded
Screw Type | Lever | Screw | Spring |
Material | Surface Treatment | Paint Color | Material | Surface Treatment | Material |
Threaded / Tapped | Zinc Diecast | Baked Paint | Black, Orange, Silver Gray, Red, Yellow | 1215 Carbon Steel | Black Chromate | 304 Stainless Steel |
1045 Carbon Steel | Electroless Nickel Plating |
303 Stainless Steel | − |
■Sizes and Dimensions
Screw Type | Screw Dia. (coarse) | Handle Rotating Radius | Lever Height | Thread Length (depth) |
8 | 12 | 16 | 20 | 25 | 32 | 40 | 50 | 63 |
Threaded | M4 | 45 | 35 | ○ | ○ | ○ | ○ | ○ | ○ | | | |
M5 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | | |
M6 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | |
M8 | 63.5 | 45 | | | ○ | ○ | ○ | ○ | ○ | ○ | |
M10 | 78.5 | 54 | | | | ○ | ○ | ○ | ○ | ○ | ○ |
M12 | 93 | 67.5 | | | | | ○ | ○ | ○ | ○ | ○ |
Tapped | M4 | 45 | 35 | 7 |
M5 | 7 |
M6 | 7 |
M8 | 63.5 | 45 | 10 |
M10 | 78.5 | 54 | 14 |
M12 | 93 | 67.5 | 17 |
* Selectable sizes vary slightly depending on materials and paint colors
Please see the product pages for details.
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Speeds / Loads (load info.)
■Load Information of the Clamp Levers
Screw Dia. (coarse) | Max. Load Fmax. (N) | Max. Tightening Force Pmax. (kN) |
SUM24L | 303 Stainless Steel | 1045 Carbon Steel | SUM24L | 303 Stainless Steel | 1045 Carbon Steel |
M4 | 55 | 48 | 80 | 2 | 1.8 | 3 |
M5 | 74 | 65 | 108 | 3.3 | 2.9 | 4.8 |
M6 | 126 | 110 | 184 | 4.7 | 4.1 | 6.8 |
M8 | 217 | 189 | 316 | 8.6 | 7.5 | 12.5 |
M10 | 347 | 303 | 507 | 13.6 | 11.8 | 19.8 |
M12 | 511 | 446 | 746 | 19.8 | 17.2 | 28.9 |
* Max. load: Maximum load that can be applied to the lever tip when clamped
* Max. clamping force: Axial force when clamped at the max. load
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Fulcrum Pins
Product name | Fulcrum Pins - Standard |
Part number | CBD5-4 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Select the stepped screws with plus tolerance in the step length for the lever fulcrum of automated setup mechanism
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Available sizes
■Fulcrum Pins - Standard
Material | Hardness | Surface Treatment | Straight Slot | Hex Socket | Wrench Flats | Hex Head |
Standard Grade | Precision Grade | Standard Grade | Precision Grade | Standard Grade | Standard Grade |
S45C Equivalent | − | Black Oxide | ○ | - | ○ | ○ | ○ | ○ |
40〜45HRC | ○ | - | ○ | − | ○ | − |
SUS303 Equivalent | − | − | ○ | ○ | ○ | ○ | ○ | ○ |
■Sizes and Dimensions
Stepped Shaft Part | Head | Screw |
Diameter | Length | O.D. | Thickness | Wrench Flats | Hex Size | Length | Dia. x Pitch |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 12 | 13 | 15 | 20 | Straight Slot | Wrench Flats, Hex Socket, Hex Head |
φ4 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | | | | | | | φ6 | 2 | 3.5 | 5 | 7 | 4 | M2.6×0.45 |
φ5 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | | ○ | | | | | φ8 | 4 | 7 | 8 | 6 | M3×0.5 |
φ6 | | ○ | ○ | ○ | ○ | ○ | ○ | ○ | | ○ | | | | | φ10 | 2.5 | 8 | 10 | 8 | M4×0.7 |
φ8 | | | | | ○ | ○ | ○ | ○ | ○ | ○ | ○ | | | ○ | φ12 | 3 | 4.5 | 10 | 13 | 10 | M5×0.8 |
φ10 | | | | | ○ | ○ | ○ | ○ | ○ | ○ | ○ | | ○ | ○ | φ16 | 4 | 5 | 13 | 17 | 12 | M6×1.0 |
φ12 | | | | | | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ18 | 5 | 14 | 19 | M8×1.25 |
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Accuracy Info
■Accuracy of the Fulcrum Pins
Stepped Shaft Part Diameter Tolerance;
Stepped Shaft Part Dia. | O.D. Tolerance |
Standard Grade | Precision Grade |
φ4 | -0.01/-0.05 | -0.004/-0.012 |
φ5 |
φ6 |
φ8 | -0.005/-0.014 |
φ10 |
φ12 | -0.006/-0.017 |
φ13 |
φ15 |
Stepped Shaft Part Length Tolerance;
With or Without Hardening | Length Tolerance |
Without Hardening | +0.1/0 |
Hardened | +0.2/0 |
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IDEA NOTE Lever Switch
Mechanism to automatically switch the lever in use based on the workpiece shape.
IDEA NOTE Change of lever position
The structure allows the setup of the lever unit as the workpiece is changed.
IDEA NOTE Lever Position
Lever position is changed by a tension spring. The load acts in such a way the structure is self-retaining.