Hydraulic Cylinder Load Pins, SPHC Series
Hydraulic Cylinder Load Pins, SPHC Series
The SPHC Actuator Load Pins are unique force sensors utilizing the internal strain gage transducer process developed by Strainsert and used also in our other Load Cells and Tension Link Load Cells. These load pins and load bolts offer precision force measurement and monitoring by replacing existing clevis pins in hydraulic cylinder/actuator hardware.
For installation, download Load Pin Installation Instructions.
Features
The Strain gages are sealed inside small axial holes within the load pin and are positioned at two locations at the hydraulic actuator 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.
Standard models include detailed calibration data up to 500,000 lbs. Higher capacity calibration data is available at an additional charge. Strainsert factory calibrations are intended to simulate installed conditions, however, it is recommended that an in-place calibration be performed to account for any installation, tolerance, and/or alignment influences affecting sensor measurement.
Some Features Include:
Easy Installation: By replacing pins in hydraulic cylinders with minimum alterations using keeper plates.
Precison Load Sensing: Complete strain gage bridge circuit bonded and sealed inside small hole along longitudinal axis of pin, by exclusive Strainsert process.
Durability: Due to self protecting nature of strain gage installation sealed inside small holes.
Accuracy: Strainsert force sensing actuator clevis pins have combined error due to repeatibility and non-linearity of less then 1% of rated load typically.
Applications
The load pins are durable under severe conditions and working environments. These products have a wide range of applications, have a long operational life and are currently used on many installations where force measurement in a hydraulic actuator is required.
Full Specs
| Item # / CAD | Dp - Nominal Pin Diameter | Load Capacity | Cylinder Bore Diameter | L - Overall Length of Pin |
|---|---|---|---|---|
| SPHC-.5 | 0.500 in | 3500 lb | 1-1/2 Inch | 4.63 in |
| SPHC-.75 | 0.750 in | 6000 lb | 2 Inch2-1/2 Inch | 5.19 in |
| SPHC-1 | 1.000 in | 16500 lb | 3-1/4 Inch | 5.69 in |
| SPHC-1.375 | 1.375 in | 25000 lb | 4 Inch | 6.88 in |
| SPHC-1.75 | 1.750 in | 39000 lb | 5 Inch | 7.94 in |
| SPHC-2 | 2.000 in | 56000 lb | 6 Inch | 7.94 in |
| SPHC-2.5 | 2.500 in | 77000 lb | 7 Inch | 9.00 in |
| SPHC-3 | 3.000 in | 100000 lb | 8 Inch | 9.00 in |
| SPHC-3.5 | 3.500 in | 157000 lb | 10 Inch | 11.25 in |
| SPHC-4 | 4.000 in | 226000 lb | 12 Inch | 12.50 in |
| SPHC-5 | 5.000 in | 300000 lb | 14 Inch | 15.50 in |