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Industrial Lid Balancers & Manhole Opening Solutions

Jingjiang Woken Machinery Co., Ltd. specializes in mechanical structural innovation to solve safety risks and efficiency problems in heavy container cover operations.

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Who We Are

Jingjiang Woken Machinery Co., Ltd. specializes in the research, development, and manufacturing of balancers for industrial manhole cover openings. Focusing on "mechanical structural innovation", we are dedicated to addressing safety risks and improving efficiency in heavy container cover operations.

Our products utilize a purely mechanical transmission structure and an innovative torque-adaptive system, enabling safe, one-handed operation of covers weighing 8–420 kg. This eliminates the safety risks of hydraulic or pneumatic systems and significantly reduces opening torque.

  • Over 2,000 units delivered annually
  • Patented mechanical safety technology
  • Global clients in biopharma, chemicals, and environmental industries
  • Exported to Japan, South Korea, Malaysia, Germany, and more
Wokench Manufacturing Facility

Our Products

Engineered for safety, efficiency, and durability. Our lid balancers and manhole dampers are trusted by global industrial leaders.

Lid Balancer W10

Lid Balancer W10

Ideal for lightweight covers. Mechanical torque adaptation for effortless one-hand operation.

  • Weight Range: 8–50 kg
  • Purely mechanical system
  • Direct install or with steel hoops
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Manhole Damper W50

Manhole Damper W50

Enhanced damping for medium-weight industrial covers. Reduces impact and wear.

  • Weight Range: 50–120 kg
  • Torque-adaptive mechanism
  • Stainless steel components
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Quick Opening W120

Quick Opening W120

Fast, secure opening mechanism for high-frequency access points.

  • Weight Range: 100–200 kg
  • One-handed quick release
  • Anti-slip safety lock
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Lid Balancer W200

Lid Balancer W200

Heavy-duty solution for large industrial manholes. Precision-balanced for safety.

  • Weight Range: 180–280 kg
  • Modular mounting system
  • Corrosion-resistant finish
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Lid Balancer W250

Lid Balancer W250

Advanced torque control for consistent performance across variable loads.

  • Weight Range: 220–320 kg
  • Adjustable tension system
  • Low maintenance design
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Manhole Balancer W300

Manhole Balancer W300

High-capacity balancer for extreme industrial environments.

  • Weight Range: 280–380 kg
  • Reinforced structural frame
  • Fail-safe locking mechanism
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Lid Balancer W350

Lid Balancer W350

Maximum load capacity with intelligent balance distribution.

  • Weight Range: 320–420 kg
  • Multi-point support system
  • Customizable mounting options
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Custom Manhole Solutions

Custom Solutions

Tailored designs for unique manhole configurations and special requirements.

  • Full engineering support
  • On-site measurement & analysis
  • Prototyping and validation
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Why Choose Wokench?

Our mechanical innovation delivers unmatched safety, efficiency, and reliability in industrial lid operations.

Zero Hydraulic Risk

Purely mechanical design eliminates fluid leaks, pressure failures, and fire hazards.

One-Hand Operation

Effortless opening even for 420 kg covers. Reduces operator fatigue and injury risk.

No Power Required

Operates without electricity, hydraulics, or pneumatics. Ideal for hazardous areas.

Low Maintenance

Durable construction with minimal moving parts. Long service life with routine checks.

Industry Applications

Trusted by global leaders in biopharmaceuticals, chemicals, and environmental engineering.

Biopharmaceutical

Sterile environments requiring safe, repeatable access to reactors and vessels.

Fine Chemicals

High-value production with strict safety and contamination control.

Daily Chemicals

High-volume manufacturing with frequent maintenance access needs.

Environmental Water Treatment

Corrosive environments requiring durable, low-maintenance solutions.

Battery & Energy

Advanced materials processing with strict operational safety standards.

Electronics & Semiconductors

Cleanroom-compatible designs for ultra-pure manufacturing.

Trusted by Global Leaders

ThyssenKrupp (Germany) Heraeus (Germany) Wacker Chemie (Germany) Merck Electronics (Germany) Unilever (UK) Morimatsu (Japan) Kao Corporation (Japan) LG Battery (South Korea) Chi Mei (Taiwan) Nanjing Zhengyuan (China)

Get in Touch

Contact Jingjiang Woken Machinery Co., Ltd. for product inquiries, custom solutions, or technical support.

+86 13605260410
[email protected]
No. 38, Gushan Middle Road, Gushan Town, Jingjiang City, Jiangsu Province, China
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