495.200.072.003
ForceCheck Wired Chuck Force Sensor, Measuring Diameter 72 mm
Measures the holding force on turning-centers, chucks, or lathes
| Measuring Diameter | Jaws | Diameter | Force Range (per Jaw) | Part Number | ||||
|---|---|---|---|---|---|---|---|---|
| D28 | 2 / 3 | 28 mm / 1.10 in. | 0...15kN / 3,400 lb-F | 495.200.028.003 | ||||
| D28 (Low Force) | 2 / 3 | 28 mm / 1.10 in. | Contact us | 495.200.028.003.LF | ||||
| D72 | 2 / 3 | 72 mm / 2.83 in. | 0...50kN / 11,200 lb-F | 495.200.072.003 | ||||
| D72 (Low Force) | 2 / 3 | 72 mm / 2.83 in. | Contact us | 495.200.072.003.LF | ||||
| D125 | 2 / 3 / 4 | 125 mm / 4.92 in. | 0...65kN / 14,600 lb-F | 495.200.125.004 | ||||
| D125 (Low Force) | 2 / 3 / 4 | 125 mm / 4.92 in. | Contact us | 495.200.125.004.LF | ||||
| D200 | 2 / 3 / 4 / 6 | 200 mm / 7.87 in. | 0...100kN / 22,500 lb-F | 495.200.200.006 | ||||
| D200 (Low Force) | 2 / 3 / 4 / 6 | 200 mm / 7.87 in. | Contact us | 495.200.200.006.LF |
ForceCheck Force Gauge Base Set - Wired
Sets include display, connecting cable, and carrying case. Measuring bars, adapters, and other accessories are ordered separately.
| Part Number | ||||||||
|---|---|---|---|---|---|---|---|---|
| ForceCheck Base Set | 461.310.000.000 |
Chuck Force Sensor Extensions and Accessories
Accessories for the chuck force include a variety of types of rest pads and extensions to match the gripping jaws on a turning-center/chuck.
For more information regarding this item (ForceCheck Wired Chuck Force Sensor, Measuring Diameter 72 mm) or other items, fill out the form below
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Location: 304 North Main St, Suite 104, Rockford, IL 61101-1101 USA
Email: infο@ΤΑCRοckfοrd.cοm
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Accessories for the chuck force include a variety of types of rest pads and extensions to match the gripping jaws on a turning-center/chuck.
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Chuck Force Interpretation: Jaw Force vs. Total Gripping Force
The “Total Gripping Force” (F<sub>total</sub>) is defined as the arithmetic sum of the individual radial forces exerted by each jaw.
The force value shown on the ForceCheck display represents the measured radial force of a single jaw (F<sub>jaw</sub>) at the measurement diameter. This is different than the total gripping force of the chuck.
<strong>Calculating Total Gripping Force</strong>
Since the jaws move simultaneously and are driven by the same mechanism (usually a scroll plate or a hydraulic wedge), under ideal conditions the force is distributed equally among them.
F<sub>total</sub> = n × F<sub>jaw</sub>
Where:
-F<sub>total </sub>= Total gripping force
-n = Number of jaws
-F<sub>jaw</sub> = Force measured at a single jaw (value shown on ForceCheck display)
Examples:
3-jaw chuck
-Displayed Force Fjaw = 10 kN
-Total Gripping Force F<sub>total</sub> = 3 × 10 kN = 30 kN
5-jaw chuck
-Displayed force = 10 kN
-Total gripping force = 5 × 10 kN = 50 kN
<strong>Important Distinction: Force vs. Pressure</strong>
It is a common point of confusion whether the forces “cancel out” since they are opposing each other.
-<strong>Net Force on the Part:</strong> The vector sum of forces acting on a properly centered part is 0 kN. This is why the part remains stationary in the chuck.
-<strong>Gripping/Clamping Force:</strong> In terms of holding power and part deformation, we use the sum of the magnitudes. This total force determines how much friction is generated to resist cutting forces and how much the part might “crush” or distort.
<strong>Factors That May Change This Value</strong>
Your “real world” force may differ based on these conditions:
-<strong>Dynamic Loss (Centrifugal Force):</strong> If the chuck is spinning, the jaws want to fly outward due to centrifugal force. This reduces the actual gripping force. At high RPMs, the force when compared to a static condition could drop significantly.
-<strong>Friction and Lubrication:</strong> If you are measuring the force at the sensor but the other jaws are poorly lubricated, they may not actually be producing the same force.
-<strong>Part Geometry:</strong> If the part is not perfectly round or the jaws are not making full contact, the force distribution might become uneven, though the total input force from the chuck mechanism remains the same.
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