MV-LC0146 Load Pin, 3 t Radial Force Measurement

METRAVON MV-LC0146 is a 3 t load pin designed to measure radial force in a pinned connection, such as a pulley support. Its double-shear sensing structure replaces a mechanical pin only when the bearing locations and loading direction match the sensor design. It does not measure axial tension in the way an in-line tension link does.

A load pin must match the bearing arrangement

The pin receives force through its contacting parts. Moving a bearing or changing a support width changes how that force reaches the sensing sections, even if the replacement pin has the same outside diameter. Send a section drawing of the pulley or joint with the enquiry, showing the loaded member, both supports, retainers and available cable space.

Drawing check	Installation consequence
Support positions	Match the bearing contact zones to the intended shear sections of the pin.
Radial load direction	Confirm sensing orientation and retention against unwanted rotation during operation.
Fits and clearances	Check the shaft fit and retention without clamping the sensing sections incorrectly.
Cable outlet	Provide clearance so movement and adjacent hardware cannot crush the cable connection.

For pulley service, the pin reaction depends on the directions and magnitudes of the rope forces. It is not automatically equal to rope tension or the suspended mass. Define the rope path and the quantity that the display or controller must report before setting the scale factor.

METRAVON MV-LC0146 radial-force load pin with cable outlet — MV-LC0146 measures the load transmitted through its designed support and bearing positions.

3 t bridge-output configuration

Parameter	Value
Rated load	3 t
Output sensitivity	1.0 ±0.05 mV/V
Excitation voltage	5-12 V
Non-linearity	±0.1 to ±0.3% FS
Hysteresis / repeatability	±0.1 / ±0.1% FS
Input / output resistance	750 ±30 / 700 ±5 ohm
Operating temperature	-20 to +70 °C
Protection / safe overload	IP66 / 150% FS
Cable	5 mm diameter, 3 m length

The 1 mV/V sensitivity matters when replacing a 2 mV/V device: the old span setting cannot be assumed correct. With 10 V excitation, the nominal full-scale bridge signal is 10 mV. A compatible signal conditioner must accept that signal and provide the output needed by the control system.

A current- or voltage-output version requires a separately confirmed transmitter configuration, supply and wiring diagram. Do not connect a raw bridge-output pin to a 4-20 mA input on the assumption that both versions use the same connections.

Overload monitoring and commissioning

Validate the reading with known loads in the assembled joint and at the operating geometry. Record zero, loaded readings and return to zero. Where a controller uses the measurement to inhibit motion, test the agreed alarm and fault responses under the machine's approved commissioning procedure. A load pin by itself is not a certified overload-protection system.

Questions before replacing an existing pin

Q1. Is matching the pin diameter enough?

No. Bearing spans, support widths, load direction and retention determine the force distribution. Compare a section through the complete joint with the sensor drawing; a diameter measurement alone cannot confirm the replacement.

Q2. Does the 3 t rating mean the machine can lift 3 t?

The rating applies to the specified load on the sensor. Pulley forces and other mechanical loads must be calculated separately, and the machine's permissible load also depends on its structure and safety system. Do not use the sensor rating as a machine-capacity declaration.

Ask METRAVON to review the MV-LC0146 pin arrangement using the joint section, maximum calculated radial reaction, operating movement and required controller signal. Include the existing pin drawing for replacement work.

Load Cells