Specifications CLIN 0002 Actuator 02052026.pdf
PDF 392 KB Posted
- Solicitation number
- N6660426Q0256
About this file
Summary of Hydraulic Actuator Solicitation
This is a Product Description and Requirements document for a government procurement of a specialized hydraulic actuator for subsea applications. The actuator will be integrated into an undersea "Dump Truck" type system designed to pivot a load from horizontal to a 20-degree angle. The system operates at 3000 PSI hydraulic pressure with a flow rate of 1-2 GPM and must function at depths up to 500 meters. Critical performance requirements include: capable of actuating loads up to 100,000 lbs, minimum stroke length of 65 inches, ability to remain fully operational after 12 months of submersion in seawater in a non-operating (retracted/static) condition, and capacity to hold the extended load without active hydraulic pressure for up to 6 months. The government preferentially seeks a mechanical locking device to minimize hydraulic seep risk and load creep over time. The actuator must automatically arrest the load in the event of hydraulic pressure loss and be supplied with a robust bracket capable of being bolted to the dump truck structure.
Evaluation of proposed solutions will prioritize: longevity in the submerged environment, endurance of load-holding capability without hydraulic pressure, provision of an integrated bracket with the piston, minimized initial load cases through shallow actuator angles off-vertical (not exceeding 45 degrees), reduced lead time, supplier experience working with the Department of Defense, and history of on-schedule delivery. The government acknowledges that performance characteristics such as maximum load, retracted length, extended length, and maximum stroke may vary based on system geometry and will consider solutions meeting values close to those specified.
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Other files
| File | Type | Posted |
|---|---|---|
| Specifications CLIN 0001 HPU 0004.pdf | ||
| Specifications CLIN 0002 HPU 0004.pdf | ||
| N6660426Q01160004.pdf | ||
| N6660426Q02560003.pdf | ||
| N6660426Q0256.pdf | ||
| N6660426Q0116.pdf | ||
| Specifications CLIN 0001 HPU.pdf | ||
| Specifications CLIN 0002 Actuator.pdf |
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Text version
Description of Product Requested
The government is seeking a hydraulic actuator for use in an undersea “Dump Truck” type system. The provided actuator will be used to pivot a load from horizontal to a 20-degree angle (see figures below). It is anticipated that the actuator may remain submerged in seawater in a non-operating condition (e.g. retracted/static) for up to 12 months without service. It is required that the actuator still be fully operational at the end of this 12-month period. It is also required that the actuator can be “locked” in an extended position, while holding the load, for up to 6 months without hydraulic pressure being actively supplied. Additionally, the actuator must be able to gently lower the load from the 20-degree angle back to horizontal. The piston should be supplied with a bracket than can be bolted to the dump truck and is robust enough to handle the required loads.
Below is a list of generalized requirements that, if met by the supplied product, shall provide an acceptable solution for integration into the system. The government understands that performance characteristics such as maximum load, retracted length, extended length, maximum stroke, may be dependent on system geometry and thus the government will consider solutions that are close to meeting the desired values. The angle of the actuator in its initial position shall not be more than 45 degrees from vertical. The closer to vertical the actuator is in its initial position, the lower the loads that will be subjected to other system components. Hydraulic oil will be supplied at 3000PSI, with a flow rate of 1-2 GPM to the actuator.
Requirements:
Product shall be operable in a subsea environment, up to 500 meters
Product shall be fully operable after 1 year of submersion in seawater in a non-operating condition
Product shall be capable of actuating loads up to 100,000lbs when operated at
3000PSI
Product shall be capable of holding the load at an extended position without hydraulic pressure supplied. The Government’s desirement is that this is achieved via a mechanical locking device in order to minimizing the risk of hydraulic seep over time that may result in load creep
Product shall have a stroke length of at least 65 inches The product shall automatically arrest the load in the event of hydraulic pressure loss
Product and Supplier Evaluation Factors (and importance compared to price):
Longevity in submerged environment
Endurance holding load without hydraulic pressure applied
Integrated bracket delivered with the piston
Actuator designed such that initial load cases are minimized (e.g. shallow angle off-vertical)
Reduced lead time
Supplier experience working with the DoD
History of excellence and delivering products on schedule
Figure 1: System Characteristics at Horizontal
Figure 2: Load Pivoted 20 Degrees
99.625”
MAX
Top of bracket from ground
File details come from the government source that posted it. Updated .