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  • 321381 Electromagnet 10V for Hitachi COMATROL Replacement Part Solenoid Valve
  • 321381 Electromagnet 10V for Hitachi COMATROL Replacement Part Solenoid Valve
  • 321381 Electromagnet 10V for Hitachi COMATROL Replacement Part Solenoid Valve
  • 321381 Electromagnet 10V for Hitachi COMATROL Replacement Part Solenoid Valve
  • 321381 Electromagnet 10V for Hitachi COMATROL Replacement Part Solenoid Valve
  • 321381 Electromagnet 10V for Hitachi COMATROL Replacement Part Solenoid Valve
321381 Electromagnet 10V for Hitachi COMATROL Replacement Part Solenoid Valve

321381 Electromagnet 10V for Hitachi COMATROL Replacement Part Solenoid Valve

  • 20 - 49 Pieces
    $15
  • 50 - 199 Pieces
    $13
  • >= 200 Pieces
    $10

Customization:

Customized packaging（Min.Order: 500 pieces）
Customized logo（Min.Order: 100 pieces）
Graphic customization（Min.Order: 100 pieces）
View product details

321381 Electromagnet 10V for Hitachi COMATROL Replacement Part Solenoid Valve

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Precision Control for Solenoid Valves: Designed as a 10V electromagnet replacement part for Hitachi COMATROL solenoid valves, enabling precise hydraulic system operation in construction machinery.
  • Durability & Reliability: Steel construction ensures robust performance in harsh industrial environments, while the plastic body provides lightweight yet sturdy structural support.

Key features

  • 1. Corrosion-Resistant Steel Construction

    • With a corrosion-resistant steel body and durable plastic components, ensure long-lasting performance in harsh industrial environments compared to plastic-only alternatives*.

  • 2. Integrated Structural & Electrical Design

    • With an integrated design combining structural support and electrical connection, streamline assembly and reduce downtime versus multi-part solutions*.

  • 3. 10V Power Efficiency for Diesel Systems

    • With a 10V power rating and steel core, achieve reliable operation in diesel-powered systems, ensuring consistent performance under heavy loads compared to lower-rated solenoids*.

  • 4. Direct Hitachi Compatibility for Construction Use

    • Designed for Hitachi COMATROL solenoid valve systems, this component provides direct compatibility for construction machinery maintenance, avoiding costly downtime unlike generic parts*.

  • 5. Safety-Compliant Materials

    • Constructed with materials meeting industrial safety standards, ensuring compliance and reliability in regulated environments where uncertified components pose risks*.

Product details

321381 Electromagnet 10V for Hitachi COMATROL Replacement Part Solenoid Valve

The 321381 Electromagnet 10V is a precision-engineered replacement part for Hitachi COMATROL solenoid valves, designed for industrial and automotive applications. Crafted from durable steel and featuring a compact, textured plastic body with a robust metal connector, this component ensures reliable electrical connectivity and mechanical stability. With a 1-year shelf life and diesel system compatibility, it guarantees seamless integration into heavy-duty machinery.

Technical specifications

FeatureSpecificationBenefit
MaterialSteel body, green plastic housingEnhanced durability and corrosion resistance
Voltage Compatibility10V DCDirect compatibility with Hitachi systems
Connector TypeBlack metal terminalHigh-current handling and secure locking
Shelf Life1 yearEnsures reliable storage without degradation
Mounting DesignCentral bolt holeEasy installation in tight spaces

Customization guide

  • Adjustable Connector Types: Customize terminals (screw, pin, or solder) to match specific electrical standards.
  • Material Upgrades: Reinforce with stainless steel for corrosive environments or lightweight aluminum for reduced weight.
  • Color & Aesthetic: Mold plastic in OEM colors to align with brand or equipment aesthetics.

Get inspired

This electromagnet is ideal for industrial automation systems, construction machinery, and automotive valve controls. Its integrated design reduces assembly complexity, while the textured surface ensures safe handling in wet or oily conditions.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Magnetic Force50N+15% (57.5N)+30% (65N)*
Temperature Range-20°C to 80°C-30°C to 100°C-40°C to 120°C
Durability Rating5,000 cycles8,000 cycles12,000 cycles

Supplier's note

  1. Technical Breakthroughs:

    • Steel Core: Delivers 20% higher magnetic efficiency than plastic cores, ensuring robust performance in harsh environments.
    • 10V Precision: Matches Hitachi’s voltage standards, minimizing energy loss and overheating risks.
    • 1-Year Shelf Life: Outperforms industry norms (typically 6 months), reducing downtime for OEMs.

  2. Optimal Version Selection:

    • Base Model: Ideal for standard industrial applications (e.g., conveyor systems) requiring cost-effective reliability.
    • Advanced Model: Tailored for heavy machinery in extreme temperatures (e.g., mining equipment) with extended durability.
    • Pro Model: Designed for high-cycle applications (e.g., automated valve arrays) needing 60% longer lifespan than competitors.

With its triple-industry-standard chemical resistance (Pro Model), you can safely handle corrosive fluids in automotive workshops. Pair this with the textured plastic body to ensure grip in oil-slick environments, enhancing operator safety.

Note: Comparative values assume industry benchmarks of 50N magnetic force and 6-month shelf life.

Frequently asked questions

  • Which Hitachi solenoid valve models is the 321381 electromagnet compatible with?

  • How do I maintain the 321381 electromagnet for diesel solenoid valves?

  • Why is steel material used for the 321381 electromagnet?

  • Can the 321381 electromagnet be customized for specific machinery brands?

  • Is the 321381 electromagnet compliant with safety standards for construction equipment?

  • What is the shelf life of the 321381 electromagnet and how should it be stored?

  • Does the 321381 electromagnet work with diesel-powered construction machinery?

  • How does the 321381 compare to aluminum electromagnets in industrial settings?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Electromagnet CompatibilityHitachi solenoid valve replacements in construction machineryIndustry Standard: Generic fit (no brand-specific design)
Our Base: Hitachi-specific design (1:1 OEM match) ▲
Our Advanced: Hitachi + 3+ competitor compatibility ▲▲		Ensures precise fit, reduces downtime ▲
Universal compatibility for mixed fleets ▲▲		Limited to Hitachi systems (Base)
Higher cost for Advanced ▲▲
Material CompositionHeavy-duty machinery under harsh conditionsIndustry Standard: Low-grade steel (yield strength <300 MPa)
Our Base: High-grade steel (ASTM A36, 350 MPa) ▲
Our Advanced: SAE 1018 steel (410 MPa) ▲▲		Enhanced durability ▲
Higher tensile strength for extreme loads ▲▲		Base: Moderate corrosion resistance
Advanced: 10% weight increase ▲▲
Electromagnetic StrengthLifting/crane systems in construction sitesIndustry Standard: 1,000 Gauss (5kg lift capacity)
Our Base: 1,200 Gauss (6kg) ▲
Our Advanced: 1,500 Gauss (8kg) ▲▲		Stronger hold for heavier loads ▲
Supports oversized components ▲▲		Base: Requires 10V input
Advanced: 15% higher power draw ▲▲
Power EfficiencyDiesel-powered machinery with energy constraintsIndustry Standard: 12W power consumption
Our Base: 9W (30% savings) ▲
Our Advanced: 7W (42% savings) ▲▲		Reduces operational costs ▲
Lower heat generation ▲▲		Advanced: Requires specialized wiring ▲▲
Environmental ResistanceOutdoor construction in dusty/wet environmentsIndustry Standard: IP40 (no dust/water protection)
Our Base: IP54 (dust-resistant, splash-proof) ▲
Our Advanced: IP67 (dust/water submersion) ▲▲		Base: Protected against light exposure ▲
Advanced: Deployable in harsh terrains ▲▲		Base: 15% bulkier
Advanced: 20% heavier ▲▲
Shelf LifeInventory management for spare partsIndustry Standard: 6 months (moisture-induced corrosion)
Our Base: 12 months (ISO 11843 anti-corrosion coating) ▲
Our Advanced: 18 months (vacuum-sealed packaging) ▲▲		Reduces stock obsolescence ▲
Extended storage without degradation ▲▲		Advanced: 20% higher packaging cost ▲▲

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🔧 Industrial Maintenance Technician Reviews

⭐⭐⭐⭐⭐ James Carter - Heavy Equipment Repair Shop
"Exactly what we needed for our Hitachi excavators. The 10V compatibility ensures no voltage mismatch issues, and the steel construction has held up perfectly through months of daily use in dusty, oily conditions. Installation was a breeze thanks to the central bolt hole design."

Purchase Date: February 2025 | Usage Period: 4 months

🚜 Construction Machinery Operator Reviews

⭐⭐⭐⭐⭐ Elena Rodriguez - Mining Equipment Operator
"We replaced several failed generic solenoids with the 321381 electromagnets on our diesel-powered drills. After 6 months of continuous operation in extreme temperatures, all units are still performing flawlessly. The IP54 rating really makes a difference in dusty mine environments."

Purchase Date: October 2024 | Usage Period: 7 months

🛠️ Automotive Workshop Mechanic Reviews

⭐⭐⭐⭐☆ Darren Wu - Diesel Systems Specialist
"Solid replacement part for Hitachi COMATROL valves. The black metal terminal provides a secure connection, and I appreciate the textured plastic housing—it doesn’t slip when greasy. Only reason I’m not giving 5 stars is that it’s not compatible with non-Hitachi systems, but that’s expected for an OEM-specific part."

Purchase Date: May 2024 | Usage Period: 8 months

🏭 Factory Automation Engineer Reviews

⭐⭐⭐⭐⭐ Lisa Tran - Industrial Automation Engineer
"We integrated the Advanced Model into our automated valve array. After 5,000+ cycles, zero failures. The +15% magnetic force and extended temperature range (-30°C to 100°C) make it ideal for our high-demand production line. Also love that it draws 30% less power than our previous model—less heat buildup means longer component life."

Purchase Date: January 2025 | Usage Period: 5 months

🏗️ Field Service Technician Reviews

⭐⭐⭐⭐⭐ Marcus Bell - Mobile Repair Technician
"I carry these in my service van for on-site repairs. The 1-year shelf life gives me peace of mind—no worrying about degradation during storage. It’s become my go-to replacement for Hitachi solenoid valves in backhoes and loaders. Works every time, no guesswork."

Purchase Date: November 2024 | Usage Period: 6 months

📊 Rating Statistics

Average Rating: 4.9/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 78 reviews (87.6%)
  • ⭐⭐⭐⭐☆ (4-star): 10 reviews (11.2%)
  • ⭐⭐⭐☆☆ (3-star): 1 review (1.1%)
  • ⭐⭐☆☆☆ (2-star): 0 reviews (0%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Hydraulic Systems Engineer Recommendation

David Kim - Certified Hydraulic Systems Engineer
"In my 15 years of industrial maintenance consulting, I’ve seen countless solenoid failures due to poor materials and mismatched voltage. The 321381 stands out with its ASTM A36 steel body and precise 10V DC alignment—a rare combination of durability and electrical accuracy. I now specify this part for all Hitachi-compatible system upgrades."

OEM Integration Specialist Recommendation

Anita Patel - Industrial Component Integration Expert
"For OEMs looking to reduce assembly complexity and improve field reliability, the integrated electromechanical design of this unit is a game-changer. The ability to customize connectors and colors is a huge plus for branded equipment integration. It’s not just a replacement—it’s an upgrade."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Reliable & Durable – No More Downtime" - Tom Reynolds (Construction Foreman)

Posted: 2 days ago

"We’ve been using these on our Hitachi Zaxis excavators for months. Zero failures. The steel body resists impact and heat better than the aluminum ones we tried before. Worth every penny in reduced downtime."

⭐⭐⭐⭐⭐ "Perfect Fit, No Adjustments Needed" - Sofia Nguyen (Equipment Manager)

Posted: 1 week ago

"Ordered the Base Model for our workshop. Installed in under 10 minutes—no wiring mods, no fit issues. Exactly like the original. Already reordering for our spare parts inventory."

⭐⭐⭐⭐☆ "Great Performance, Slight Weight Increase" - Derek Foster (Mechanic)

Posted: 3 weeks ago

"Stronger than the old solenoid and more efficient. Only note: the steel body adds a bit of weight, but that’s a fair trade for the durability. Works flawlessly with diesel systems."

🎯 Reviews by Use Case Category

🏗️ Construction Machinery Maintenance (41 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
  • Direct Hitachi compatibility (95% mentioned)
  • Durability in harsh conditions (90% mentioned)
  • Easy installation (88% mentioned)

⚙️ Industrial Equipment Repair (29 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • 10V precision and power efficiency (93% mentioned)
  • Steel construction and corrosion resistance (86% mentioned)
  • Long shelf life for spare inventory (82% mentioned)

🚛 Automotive & Diesel Systems (19 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
  • Diesel system compatibility (100% mentioned)
  • Secure metal connector (89% mentioned)
  • Safety compliance and reliability (94% mentioned)

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