Reliable Centralized Lubrication for Large-Scale Industrial Equipment
A dual-line system is a type of centralized lubrication system that uses two supply lines running in parallel from a pump station out to metering valves at each lubrication point. A reversing (changeover) valve pressurizes one line while the other depressurizes; on each cycle, every metering valve dispenses a fixed, adjustable dose.
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![Dual Line Lubrication System]()
Dual Line Lubrication SystemEngineered for massive industrial complexes, the Dual Line Lubrication System uses alternating pressure headers and a heavy-duty pump to deliver precise grease or oil. Ideal for harsh... -
![Dual Line Lubrication System for CNC Machines]()
Dual Line Lubrication System for CNC MachinesThe Dual Line Lubrication System for CNC Machines is an industrial-grade, high-pressure centralized lubrication solution designed to deliver precisely metered grease or oil to multiple friction... -
![Dual Line Grease Lubrication System]()
Dual Line Grease Lubrication SystemThe Dual Line Grease Lubrication System is a high-pressure centralized solution for large machinery with multiple or distributed grease points. Two main lines alternate pressure through a... -
![Industrial Dual Line Lubrication System]()
Industrial Dual Line Lubrication SystemThe Industrial Dual Line Lubrication System is a high-pressure centralized system designed for heavy-duty machinery with multiple distributed lubrication points. Operating through two alternating... -
![Lincoln Dual Line Lubrication System]()
Lincoln Dual Line Lubrication SystemThe Lincoln Dual Line Lubrication System is a high-pressure centralized grease distribution unit designed for heavy-duty machinery with dispersed friction points and long piping routes.
Our Dual-Line Product Range
Dual-Line Lubrication System: Complete dual-line system — pump station, reversing valve, dual-line feeders and end-of-line monitoring. Configurable for grease or oil and sized to your point count and run length.
Dual-Line Lubrication System for CNC Machines: Compact dual-line greasing for CNC machinery where precise, repeatable lubrication of slides, ball-screws and bearings protects accuracy and avoids unplanned stoppages. Quiet, closed-loop and low-consumption.
Dual-Line Grease Lubrication System: Grease-optimized dual-line network handling high-NLGI greases across long lines and cold or remote sites. Big reduction in grease waste versus manual greasing.
Industrial Dual-Line Lubrication System: Heavy-duty configuration for the toughest service: up to ~400 bar, 1,000+ points, standby pump and a full alarm suite. Engineered for continuous operation.
Lincoln-Compatible Dual-Line Lubrication System: Drop-in compatible dual-line components and complete systems that interface with existing Lincoln-type installations — feeders, valves and pump skids. Lower-cost spares and expansion without ripping out what already works.
How a Dual-Line System Works
High-pressure pump station: A reservoir and pump (grease or oil) build the working pressure, with an optional standby pump so lubrication never stops if one fails.
Reversing / changeover valve: Alternates supply between Line A and Line B, driving each metering cycle.
Two main lines: Carry lubricant out to the field, often over tens to hundreds of metres.
Dual-line metering feeders: Each delivers an independently adjustable, fixed dose per cycle to its lubrication point(s).
End-of-line pressure switch + control panel: Confirms the line is fully charged, signals cycle completion, and raises alarms on pump failure, main-line burst/leak, or clog.
Why Plants Specify Dual-Line
Stop unplanned downtime. Automatic, verified lubrication removes the cause of bearing failure. Industry references report maintenance-cost reductions of up to ~75% versus manual greasing.
Cut lubrication labor and grease waste. No manual rounds; dose is metered per point, so over-greasing and contaminated waste drop sharply.
Scale to the whole plant. One station covers 1,000+ points at distances and pressures (up to ~400 bar) that single-line systems can't reach.
Dose you actually control. Each point's volume is independently adjustable and independent of back pressure — critical when points sit at very different elevations or distances.
Know it's working. Indicator pins show each feeder's last cycle; alarms flag pump failure, line burst, and clog before they become stoppages.
Grow with the plant. Add points or isolate zones without re-piping the whole system. Modular valves let you convert grease→oil later.
Survive the environment. Sealed, rugged components for dust, heat, moisture, and corrosive (e.g., port/marine) duty — including stainless options for caustic sites.
Built for Demanding Industries
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Industry / Equipment |
Why dual-line wins here |
|
Steel & rolling mills, continuous casting |
High heat and dust, continuous operation, hundreds of points on long runs. |
|
Cement plants & rotary kilns |
Kiln tyres, rollers and supports under heat, dust and heavy load. |
|
Mining & mineral processing |
Crushers, conveyors and stackers in remote, abrasive, wet conditions. |
|
Port & bulk handling |
Stacker-reclaimers, ship unloaders, quay cranes in corrosive marine duty. |
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Power plants |
Conveyors, mills and turbine auxiliaries needing reliable, low-touch lube. |
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Pulp & paper |
Wet, corrosive environments with long, spread-out lines. |
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Sugar mills & other process plants |
Seasonal, high-load operation where stoppages are expensive. |
Dual Line vs. Other Centralized Lubrication Systems
Choosing the right lubrication technology depends on machine size, lubrication-point quantity, lubricant requirements, piping layout, and monitoring needs.
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System Type |
Typical Application |
Key Consideration |
|
Single-Line System |
Smaller or moderately sized systems |
Simple centralized distribution |
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Progressive System |
Machines with sequential metering requirements |
Each metering stage depends on the previous stage |
|
Dual-Line System |
Large systems with many or widely distributed lubrication points |
Two alternating main lines provide flexible distribution |
|
Multi-Line System |
Applications requiring individual pump outlets |
Each lubrication point or circuit can have a dedicated outlet |
Engineering Support & Custom System Design
Design
Map every lubrication point, calculate volumes and intervals, size the pump and lines, and select feeders and control logic.
Commissioning
On-site or remote commissioning, plus training for your maintenance team.
Deliverables
Supply P&ID and layout drawings, bill of materials, and a commissioning plan.
Lifecycle
Spare-parts cross-reference and ongoing technical support.
Quality Control & Product Reliability
A centralized lubrication system operates continuously as part of the customer's machinery—component reliability directly impacts maintenance efficiency and equipment availability.
Our quality control process can include inspection and verification of:
Pump performance
Metering device operation
Valve function
Pressure-related components
Sealing performance
Thread and dimensional accuracy
Material and component consistency
Assembly quality
Functional testing
For project-based orders, inspection requirements and documentation can be discussed before production.
Company Strength
Zhejiang Shengxiang Machinery Co., Ltd., established in 2001, is the mainland China branch of Taiwan ISHAN Precision Machinery Industry Co., Ltd. Specializing in advanced centralized lubrication systems, we offer customized design, products, and services backed by decades of expertise.
Packaging & Shipping
We provide flexible packaging and shipping solutions for international orders, based on product type, order quantity, destination, and transportation method.
Packaging Options
• Standard Export Carton: Suitable for regular components and spare parts.
• Pallet Packaging: Available for bulk orders and easy warehouse handling.
• Customized Packaging: Packaging, labeling, and protection can be arranged according to customer requirements.
Shipping Methods
We support multiple international transportation options:
• Sea Freight: Suitable for bulk orders, heavy equipment, and cost-sensitive shipments.
• Air Freight: Suitable for urgent orders and time-sensitive deliveries.
• Rail Freight :Available for selected international routes, providing a balance between transit time and cost.
Certificates & Compliance
Our products and manufacturing processes are supported by recognized quality and compliance certifications to meet international sourcing requirements.
ISO 9001:2015
CE Certification
RoHS Compliance
REACH Compliance
FAQ
As one of the most professional dual line system manufacturers and suppliers in China, our products have good reputation in the market. Please rest assured to buy durable dual line system made in China here from our factory. For price consultation, contact us.
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