SUN HYDRAULICS
DMDAXBN728
$148.23 USD
- SUN HYDRAULICS
- Material:DMDAXBN728
- Model:DMDA-XBN@728
- Summary:Cartridge
Quantity in stock: 0
***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Sun Hydraulics directly.***
The Sun Hydraulics DMDAXBN728 (DMDAXBN728) is a high-performance solenoid-operated 3-way, 2-position cartridge valve, designed for direct-acting and balanced spool directional control. This valve boasts a maximum operating pressure of 5000 psi (350 bar) and a flow capacity of 12 gpm (45 L/min), making it suitable for robust hydraulic applications. The DMDAXBN728 features closed transitions between spool positions B and R, enhancing performance by providing faster and more consistent response times, particularly useful in pilot control applications where capacity is less critical. The unit's manual override options include D, L, and T controls with a mechanical life expectancy of about 7,000 cycles. It incorporates EPDM seals specifically for use with phosphate ester fluids; however, these seals are susceptible to damage when exposed to petroleum-based fluids. Its wet armature design allows the working fluid to surround the armature, which could influence fluid integrity under prolonged energization. Interchangeable coils from Sun\u2019s Series 1 solenoid products can be mounted in either direction on the solenoid tube assembly which is fatigue rated for extended service. The valve also benefits from Sun's floating style construction that minimizes internal binding due to installation torque or machining variations in the cavity/cartridge setup. This model uses a T11A cavity and features rapid response times typically around 50 ms. It has detailed specifications for installation including a hex size of 7/8 in (22.2 mm) and an installation torque between 30 - 35 lbf ft (41 - 47 Nm). Weighing only about .60 lb (0.30 kg), the DMDAXBN728 is compact yet durable enough for demanding hydraulic systems requiring precise directional control and reliability.
The Sun Hydraulics DMDAXBN728 (DMDAXBN728) is a high-performance solenoid-operated 3-way, 2-position cartridge valve, designed for direct-acting and balanced spool directional control. This valve boasts a maximum operating pressure of 5000 psi (350 bar) and a flow capacity of 12 gpm (45 L/min), making it suitable for robust hydraulic applications. The DMDAXBN728 features closed transitions between spool positions B and R, enhancing performance by providing faster and more consistent response times, particularly useful in pilot control applications where capacity is less critical. The unit's manual override options include D, L, and T controls with a mechanical life expectancy of about 7,000 cycles. It incorporates EPDM seals specifically for use with phosphate ester fluids; however, these seals are susceptible to damage when exposed to petroleum-based fluids. Its wet armature design allows the working fluid to surround the armature, which could influence fluid integrity under prolonged energization. Interchangeable coils from Sun\u2019s Series 1 solenoid products can be mounted in either direction on the solenoid tube assembly which is fatigue rated for extended service. The valve also benefits from Sun's floating style construction that minimizes internal binding due to installation torque or machining variations in the cavity/cartridge setup. This model uses a T11A cavity and features rapid response times typically around 50 ms. It has detailed specifications for installation including a hex size of 7/8 in (22.2 mm) and an installation torque between 30 - 35 lbf ft (41 - 47 Nm). Weighing only about .60 lb (0.30 kg), the DMDAXBN728 is compact yet durable enough for demanding hydraulic systems requiring precise directional control and reliability.
This solenoid-operated 3-way, 2-position cartridge is a direct-acting, balanced spool directional valve.
- The solenoid tube assembly is fatigue rated for 5000 psi (350 bar) service.
- Spools B and R are closed in the transition between their two positions. This results in a higher performance limit at the expense of lower capacity. When used as pilot controls, where capacity is not a factor, the closed transition will provide faster and more consistent response times.
- This valve is direct actuated and requires no minimum hydraulic pressure for operation.
- On models equipped with the D or L control, the detent mechanism in the manual override is meant for temporary actuation. The D, L and T manual control assembly has a mechanical life expectancy of approximately 7,000 cycles.
- Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
- This valve utilizes a wet armature design. This means that the working fluid surrounds the armature and is exposed to the heat generated by the coil. This can be a factor if the coil is energized for long periods of time. Some fluids, notably water/glycol mixtures, break down at these temperatures over time and form varnishes that will affect the function of the cartridge.
- Coils are interchangeable with other Sun Series 1 solenoid products and can be mounted on the tube in either direction.
- Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.
| Cavity | T-11A |
| Series | 1 |
| Capacity | 12 gpm45 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Response Time - Typical | 50 ms50 ms |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 5 in³/min.@3000 psi80 cc/min.@210 bar |
| Switching Frequency | 15000 cycles/hr15000 cycles/hr |
| Manual Override Force Requirement | 5 lbs/1000 psi @ Port 133 N/100 bar @ Port 1 |
| Manual Override Stroke | .10 in.2,5 mm |
| Solenoid Tube Diameter | .75 in.19 mm |
| Valve Hex Size | 7/8 in.22,2 mm |
| Valve Installation Torque | 30 - 35 lbf ft41 - 47 Nm |
| Model Weight | .60 lb0,30 kg |
| Seal kit - Cartridge | Viton: 990-411-006 |
| Seal and nut kit - Coil | Viton: 990-770-006Viton: 990-770-006 |
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