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STONE

STONE is a manufacturer of hydraulic power units and related components, with a product line that includes compact AC and DC power units, single- and double-acting configurations, reservoirs, cartridge valves, and hydraulic plugs. The brand's power units are typically built around gear pumps and are specified for pressures up to 2,500 psi, with flow rates commonly in the 0.6 to 1.2 gpm range. Motor options include 115V AC and 12V DC, making the line suitable for both stationary industrial equipment and mobile applications where battery power is available. Valve configurations include 1-way/2-position, 4-way/2-position, and 4-way/3-position, which allows the units to drive single- or double-acting cylinders. Port sizes are often 3/8" NPT, and reservoirs are available in capacities such as 3 quarts or 2 gallons, with round steel construction. These power units are used in applications such as lifts, presses, and other hydraulic actuation systems where a self-contained hydraulic power source is required. 3G Electric supplies the STONE line as part of its hydraulic equipment catalog, offering 42 SKUs that include complete power units, replacement parts, and accessories. The catalog covers both AC and DC models, with options for different valve types and reservoir sizes. For plant engineers and maintenance managers, this means access to a range of standard hydraulic power units that can be matched to specific flow, pressure, and voltage requirements. The replacement parts, such as cartridge valves and plugs, support maintenance and repair of existing STONE units. 3G Electric provides global logistics and support for these products, allowing customers to source STONE hydraulic components alongside other industrial equipment. The product data includes manufacturer part numbers, specifications, and descriptions to aid in selection and cross-referencing. This helps procurement specialists verify compatibility and reduce downtime. The STONE line is positioned as a practical choice for hydraulic power needs in industrial and mobile equipment, with a focus on standard configurations and readily available replacement components. 3G Electric's role is to make these products accessible worldwide, with the ability to quote and ship orders to various locations. The catalog includes detailed specifications for each SKU, such as maximum pressure, flow rate, voltage, valve type, and port size, enabling informed decision-making. For maintenance teams, having access to replacement parts like the VF-4028 cartridge valve or the 1456-AA plug means that STONE power units can be kept in service with minimal disruption. The reservoirs, such as the KR42, are also available for custom builds or repairs. Overall, the STONE brand represents a range of hydraulic power units and components that are straightforward to specify and maintain, and 3G Electric supports this line with global availability and technical data.

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About STONE

STONE is a manufacturer of hydraulic power units and related components, with a product line that includes compact AC and DC power units, single- and double-acting configurations, reservoirs, cartridge valves, and hydraulic plugs. The brand's power units are typically built around gear pumps and are specified for pressures up to 2,500 psi, with flow rates commonly in the 0.6 to 1.2 gpm range. Motor options include 115V AC and 12V DC, making the line suitable for both stationary industrial equipment and mobile applications where battery power is available. Valve configurations include 1-way/2-position, 4-way/2-position, and 4-way/3-position, which allows the units to drive single- or double-acting cylinders. Port sizes are often 3/8" NPT, and reservoirs are available in capacities such as 3 quarts or 2 gallons, with round steel construction. These power units are used in applications such as lifts, presses, and other hydraulic actuation systems where a self-contained hydraulic power source is required. 3G Electric supplies the STONE line as part of its hydraulic equipment catalog, offering 42 SKUs that include complete power units, replacement parts, and accessories. The catalog covers both AC and DC models, with options for different valve types and reservoir sizes. For plant engineers and maintenance managers, this means access to a range of standard hydraulic power units that can be matched to specific flow, pressure, and voltage requirements. The replacement parts, such as cartridge valves and plugs, support maintenance and repair of existing STONE units. 3G Electric provides global logistics and support for these products, allowing customers to source STONE hydraulic components alongside other industrial equipment. The product data includes manufacturer part numbers, specifications, and descriptions to aid in selection and cross-referencing. This helps procurement specialists verify compatibility and reduce downtime. The STONE line is positioned as a practical choice for hydraulic power needs in industrial and mobile equipment, with a focus on standard configurations and readily available replacement components. 3G Electric's role is to make these products accessible worldwide, with the ability to quote and ship orders to various locations. The catalog includes detailed specifications for each SKU, such as maximum pressure, flow rate, voltage, valve type, and port size, enabling informed decision-making. For maintenance teams, having access to replacement parts like the VF-4028 cartridge valve or the 1456-AA plug means that STONE power units can be kept in service with minimal disruption. The reservoirs, such as the KR42, are also available for custom builds or repairs. Overall, the STONE brand represents a range of hydraulic power units and components that are straightforward to specify and maintain, and 3G Electric supports this line with global availability and technical data.

Common Applications

  • Industrial lifts and presses — STONE AC-10TC compact AC hydraulic power unit (0.6 gpm, 2,300 psi, 115V)
  • Mobile equipment — STONE DC-20SF single-acting DC hydraulic power unit (12V, 1.2 gpm, 2,500 psi)
  • Double-acting cylinder actuation — STONE DC-70BS double-acting DC hydraulic power unit (12V, 3 qt reservoir, 4-way/2-position)
  • Hydraulic system maintenance — STONE VF-4028 cartridge valve for flow and pressure control
  • Custom hydraulic builds — STONE KR42 2-gallon round steel reservoir for fluid storage and heat dissipation
  • Port sealing in hydraulic systems — STONE 1456-AA hydraulic plug to prevent leaks and maintain pressure

Guides & Resources

Frequently asked questions

Common questions about STONE from 3G Electric.

What are the typical specifications of STONE hydraulic power units?

STONE hydraulic power units are available in AC and DC configurations. AC models, such as the AC-10TC, use a 115V motor and a 1-stage gear pump to deliver 0.6 gpm at up to 2,300 psi. DC models, such as the DC-20SF, operate on 12V and deliver 1.2 gpm at up to 2,500 psi. Valve options include 1-way/2-position, 4-way/2-position, and 4-way/3-position. Ports are commonly 3/8" NPT. Reservoir capacities include 3 quarts and 2 gallons. These units are used in mobile and industrial applications to power hydraulic cylinders and actuators.

What is the difference between single-acting and double-acting STONE hydraulic power units?

Single-acting STONE power units, such as the DC-10SF, use a 1-way/2-position valve to pressurize one side of a cylinder, allowing the load or a spring to return the cylinder. Double-acting units, such as the DC-70BS, use a 4-way/2-position or 4-way/3-position valve to pressurize both sides of a cylinder, enabling powered extension and retraction. Double-acting units are typically used in applications requiring controlled movement in both directions, while single-acting units are simpler and often used for lifting or clamping where return is by gravity or spring.

What replacement parts are available for STONE hydraulic power units?

3G Electric stocks replacement parts for STONE hydraulic power units, including cartridge valves and hydraulic plugs. The VF-4028 cartridge valve controls fluid flow direction and pressure, and is used in hydraulic systems for industrial machinery, mobile equipment, and material handling. The 1456-AA hydraulic plug seals ports or openings to prevent leaks and maintain system pressure. These parts support maintenance and repair of STONE power units, helping to extend service life and reduce downtime. Availability is subject to stock, and 3G Electric can provide quotes for specific part numbers.

What reservoir options does STONE offer for hydraulic power units?

STONE offers reservoirs such as the KR42, a 2-gallon round steel tank with overall dimensions of 170 mm by 170 mm. Reservoirs store hydraulic fluid, aid heat dissipation, and allow contaminants to settle. They are available as replacement components or for custom builds. The 3-quart reservoir is also used in some STONE power units, such as the DC-70BS. When selecting a reservoir, consider fluid capacity, mounting requirements, and compatibility with the power unit's pump and motor. 3G Electric can supply these reservoirs as standalone items or as part of a complete power unit.

How do I select the right STONE hydraulic power unit for my application?

Selection depends on required flow rate, maximum pressure, power source, and valve type. Determine the flow needed by the hydraulic cylinder or actuator, and the maximum pressure required by the system. Choose AC or DC based on available power. Select single- or double-acting valve configuration based on cylinder type. Verify port sizes and reservoir capacity. STONE offers models like the AC-10TC (0.6 gpm, 2,300 psi, 115V AC) and DC-60SFC (1.2 gpm, 2,500 psi, 12V DC, 4-way/3-position). 3G Electric provides detailed specifications to assist in matching a unit to your requirements.

Are STONE hydraulic power units suitable for mobile equipment?

Yes, STONE offers DC-powered hydraulic power units designed for mobile applications where battery power is available. Models such as the DC-20SF and DC-70BS operate on 12V DC and deliver 1.2 gpm at up to 2,500 psi. They are used in mobile equipment, material handling, and other applications requiring a compact, self-contained hydraulic power source. The DC units feature valve configurations for single- or double-acting cylinders and are constructed with steel reservoirs. These units are suitable for integration into mobile hydraulic systems, subject to proper sizing and installation.