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LOAD CELLS
INSTRUMENTS
BOLTS & STUDS
TENSION LINKS
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Standard Wire Rope Clevis Pins, SPA Series
The Force Sensing Clevis Pin or Clevis Bolt, otherwise known as load pins, are unique strain
gage transducers utilizing the internal strain gage transducer
process developed by Strainsert and used also in their Flat Load
CellsŪ and Tension Links. These clevis pins and clevis bolts
offer precision force measurement and monitoring by replacing existing
clevis pins in standard wire rope socket hardware.
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The Strain gages are sealed inside small axial holes within the load pin
and are positioned at two locations at the Clevis to Clevis Eye interfaces.
In order to sense only those strains which are induced by the shear forces at
these two sections, the strain gages are positioned and oriented with
great precision, at a neutral plane relative to one specific direction
of pin loading.
The four strain gages (two at each location) are electrically
connected to form a full bridge, the signal from each strain gage being
additive so that the bridge output is proportional to the sum of the loads
transmitted by the shear planes of the pin. The circuit typically includes
temperature compensating, signal trim (optional) and balance resistors
terminating in suitable connector socket or integral cable, and potted
with a sealing compound inside the gage hole for enhanced environmental protection.
Standard models include detailed calibration data up to 500,000 lbs.
Higher capacity calibration data is available at an additional charge. In-place
calibration check is recommended.
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| Some Features Include: |
Easy Installation: By replacing pins in Crosby
(or equivalent) wire
rope sockets, with minimum machining alterations (2-tapped holes), and
hardware (2 bolts, keeper plate). |
Durability: Due to self protecting nature of
strain gage installation sealed inside small holes. |
| Precison Load Sensing: Complete strain gage
bridge circuit bonded and sealed inside small hole along longitudinal axis of pin,
by exclusive Strainsert process. |
Accuracy: Strainsert force sensing load pins
have combined error due to repeatibility and non-linearity of less
then 1% of rated load typically. |
 SPA Series
Online Catalog |
 Clevis Pins/Bolts
CAD Library |
 Specification
Drawings |
 Specification
Table and Order Information |
| Some Applications Include: |
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· End of Whip Line Winch |
· Mooring Lines |
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· Clam Shell |
· Bridge Support Cables |
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· Boom Pendant Cable Support |
· Cable Dead End |
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· Crane Hoist Cables |
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Strainsert - for superior internally gaged force transducers.
Strainsert stands for:
- Product Quality
- Knowledgeable Technical Staff
- Custom and Standard Designs
- Customer Service
- Comprehensive Testing
Contact Strainsert
For information on load pins, force sensing bolts, load cells, tension links or our high quality custom products, Contact Us for further assistance.
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