MT-LPS-WCH / CUSTOM SHEAR LOAD PINS
Winch & Sheave Load Measuring Pins
Measure the reaction at a winch sheave or pulley axle without adding an end-of-line transducer. The measured axle force depends on rope deflection, line tension and the fixed or changing direction of the resultant.
Ranges describe a custom family envelope. Diameter and capacity are not freely interchangeable; each combination requires mechanical and calibration review.
JOINT-SPECIFIC DECISION POINTS
Check the contact geometry before the capacity.
- Sheave axle dimensions, bearing races, bushing spans and grease passages.
- Rope entry/exit geometry, line tension and startup or braking peaks.
- Fixed single-axis direction or two-axis measurement for a changing rope path.
Where this pin belongs
Mooring winches · crane sheaves · cable-laying equipment · mining hoists
What the review returns
Axle fit and lubrication review, resultant-force basis and signal scaling proposal.
LOAD-PATH DETAILS
Preserve orientation. Qualify the measurement.
For equal rope-leg tensions T and deflection angle δ measured from a straight rope path, the static resultant is F = 2T sin(δ/2). At 90°, F is about 1.414T. Unequal tensions, friction, sheave weight and dynamics need separate load cases.
From the blank pin to a calibrated channel
Request material/heat-treatment identification, dimensional inspection of the bore fit and groove locations, insulation checks, and calibration over the agreed load range using representative support geometry. State proof load, combined error, temperature and traceability requirements in the RFQ.
Define acceptance before manufacture.
The quote should identify the approved drawing, rated force direction, overload limits, calibration method, environmental test scope and output scaling. Certificates or lifting approvals are supplied only when explicitly included and verified for the assembly.
Match outputs & readouts ↗THE FIVE-DIMENSION BRIEF
Your existing pin is the starting point.
Measure D / L / A / B / C or attach a sketch. We review the joint, load cases and interfaces before releasing a drawing or quotation.
- D
- Pin diameter and fit
- L
- Overall loaded length
- A
- Center loading tongue width
- B
- Each outer clevis lug width
- C
- Shear-groove center spacing
L describes the loaded span here. Include the overall end-to-end length, asymmetric lugs, spacers and retention details in your drawing or notes. Five values start the review; they do not fully define a production pin.
Download sizing sheet ↓
Compare the other load paths.
Clevis pins↗
Hydraulic cylinder eyes · agricultural equipment · automation clevis joints
Winch & sheave↗
Mooring winches · crane sheaves · cable-laying equipment · mining hoists
Marine rigging↗
Yacht rig tuning · forestay and backstay tension · marine towing measurements
Dual-axis & subsea↗
Articulating heavy joints · variable-angle sheaves · subsea machinery
Lifting shackles↗
Suspended-load monitoring · rigging test equipment · stage truss monitoring