HYDAC Equivalent Filter Cart

1. Product Overview

Our HYDAC equivalent filter carts are direct interchangeable alternatives to genuine HYDAC OF5, OFU, FCM,

 and MFU series mobile oil filtration trolleys. Designed specifically for offline kidney-loop purification, 

these filter carts work seamlessly with matched HYDAC replacement filter elements to purify hydraulic oil, 

gear lubricating oil, and other industrial fluids—extending fluid service life and reducing operating costs.

Different from low-grade superficial imitations that compromise on performance and reliability, our filter carts

 adopt fully consistent hydraulic parameters, filter housing dimensions, and sealing structures. They help

 manufacturing factories achieve on-site industrial oil recycling, extend the service life of working fluids, 

and achieve hazardous waste minimization while significantly cutting long-term fluid management expenditure.

Key applications include:

· New oil pre-filtration before system filling

· Kidney-loop offline purification during production

· System flushing after hydraulic component overhaul

· Pre-treatment of recyclable waste oil for recovery

2. Core Advantages

2.1 Full Interchangeability

Complete matching of mounting dimensions, flow parameters, and filter element interfaces ensures:

· Compatibility with genuine HYDAC filter elements

· Compatibility with our cost-effective HYDAC replacement filter cartridges

· No modification required for your existing filter system or piping connections

2.2 Multi-Stage Graded Filtration

The filter cart features a comprehensive multi-stage filtration train:

· Suction strainer – Protects the pump from large contaminants

· Primary coarse filtration – Removes larger particles (20–50μm)

· High-efficiency fine filtration – Gradient glass fiber media captures fine particles down to 3–10μm

· Optional coalescing dehydration – Removes free and emulsified water

The gradient glass fiber media effectively captures metal wear debris, rubber sludge, oxidation byproducts, 

and particulate contaminants, controlling fluid cleanliness to meet ISO 4406 standards.

2.3 Flexible Mobile Design

· Compact trolley frame – Easy to maneuver in tight workshop spaces

· Heavy-duty shock-absorbing casters – Smooth movement across uneven floors

· One filter cart serves multiple equipment – Hydraulic stations, CNC machine tools, and lubrication systems

· Improved equipment utilization – Avoids redundant fixed purification investment

2.4 Complete Safety & Monitoring Configuration

· Differential pressure indicator/alarm – Reminds operators when filter elements are saturated and need replacement

· Motor overload protection – Prevents pump damage from excessive load

· Reserved sampling ports – Enables regular oil quality testing for scientific fluid circulation management

· Overflow bypass valve – Protects the system even if element replacement is temporarily delayed

3. Technical Specifications

Parameter Specification

Compatible series HYDAC OF5, OFU, FCM, MFU

Filtration stages Suction strainer + coarse + fine (optional dehydration)

Media type Gradient glass fiber (depth-loading)

Filtration precision 3–10μm (model dependent)

Housing material Carbon steel (anti-corrosion coating)

Mobility Heavy-duty casters with shock absorption

Pressure indication Differential pressure gauge/alarm

Safety features Motor overload protection, overflow bypass valve

Sampling ports Standard (for oil analysis)

Power supply Standard industrial (customizable)

4. Main Application Scenarios

4.1 Pre-Filtration of New Oil

Before injecting barreled fresh oil into hydraulic reservoirs, the filter cart removes impurities introduced during storage 

and transportation—preventing contamination from entering new equipment.

4.2 Kidney-Loop Offline Purification

During production downtime, circulate and clean contaminated in-service oil through the filter cart. This delayed approach:

· Extends oil change intervals significantly

· Maintains system cleanliness without interrupting production

· Reduces full oil draining frequency

4.3 System Flushing After Overhaul

After hydraulic pump, valve, and cylinder overhauls, assembly residues (metal filings, seal fragments, dust) remain in pipelines.

 The filter cart removes these contaminants before system restart.

4.4 Pre-Treatment of Recyclable Waste Oil

Concentrated filtration reduces solid sludge content in waste oil, improving recycling value and reducing disposal costs for 

recoverable industrial fluids.

5. Economic & Environmental Benefits

· Extended oil service cycles – Drastically reduce waste hazardous oil output through regular purification

· Longer filter service intervals – Lower consumption of oil-contaminated spent filter cartridges

· Reduced procurement costs – Less expenditure on purchasing fresh industrial oil

· Lower disposal fees – Minimized expensive hazardous waste disposal charges

· Extended equipment life – Stabilized oil cleanliness reduces wear on pumps, bearings, and hydraulic valves

· Extended overhaul cycles – Cleaner oil means fewer component failures and longer mean time between repairs

6. Important Risk Reminder

Many low-cost copied filter carts on the market only replicate external appearance without matching critical performance 

parameters. Unmatched pump flow, poor sealing, and non-standard filter interfaces can cause:

· Rapid filter clogging and premature element saturation

· Medium rupture and oil leakage

· Accelerated fluid contamination rather than purification

· Costly equipment damage and production downtime

Our guarantee: All our HYDAC equivalent filter carts undergo strict factory testing. We support 30–60 days on-site trial 

operation. Test reports including hydraulic parameter data are available upon request.

7. Operation & Maintenance Tips

1. Differential Pressure Monitoring – Replace filter elements according to differential pressure alarm signals rather than 

fixed time cycles. This optimizes element life and prevents premature disposal.

2. Pre-Use Inspection – Inspect hoses and sealing gaskets before each use to avoid oil leakage. Replace any worn or 

cracked components immediately.

3. Regular Filtration Schedules – Formulate regular offline filtration schedules based on equipment operating hours and

 oil contamination levels to maximize oil recycling efficiency.

4. Oil Sampling – Utilize the reserved sampling ports for regular oil quality testing. Establish cleanliness baseline data and 

track trends to optimize filtration intervals.

5. Caster Maintenance – Keep casters clean and free of debris. Lubricate bearings periodically to ensure smooth movement.

8. FAQ (Frequently Asked Questions)

Q1: Can this filter cart use original HYDAC filter elements?

A: Yes. The filter housing and mounting dimensions are fully consistent with HYDAC standards, supporting both genuine 

HYDAC elements and our cost-effective HYDAC replacement filter cartridges. No modification is required.

Q2: What HYDAC filter cart series can this product directly replace?

A: It serves as the direct interchangeable substitute for HYDAC OF5, OFU, FCM, and MFU series portable filter trolleys.

 Please confirm your existing series model for exact matching.

Q3: What filtration precision can the multi-stage system achieve?

A: Depending on the selected fine filter element, the system achieves precision from 3μm to 10μm (absolute), effectively

 controlling fluid cleanliness to meet ISO 4406 standards.

Q4: Can the filter cart remove water from hydraulic oil?

A: Yes. Optional coalescing dehydration modules are available to remove free and emulsified water from hydraulic 

and lubricating oils. Please specify your water removal requirements when ordering.

Q5: What is the typical flow rate of these filter carts?

A: Flow rates vary by model. Standard configurations range from 25 L/min to 100 L/min, matching HYDAC OF5/OFU/FCM/MFU 

series specifications. Custom flow rates are available upon request.

Q6: Is this filter cart suitable for continuous operation?

A: Yes. The filter cart is designed for intermittent and continuous operation. Built-in motor overload protection and overflow 

bypass valve ensure safe long-term operation.

Q7: How do I know when to replace the filter elements?

A: Monitor the differential pressure indicator on the control panel. When the pressure reaches the alarm threshold 

(typically 2–3× initial clean pressure drop), replace the elements. Do not operate beyond the maximum allowable differential

 pressure.

Q8: What is the difference between your filter cart and low-cost imitations?

A: Our carts feature consistent hydraulic parameters, standard sealing structures, and proper pump-flow matching. 

Low-cost imitations often have unmatched flow rates, poor sealing, and non-standard filter interfaces—leading to rapid 

clogging, leakage, and fluid contamination.

Q9: Can I use this filter cart for lubricating oil as well?

A: Yes. The filter cart is suitable for hydraulic oil, gear lubricating oil, turbine oil, and other industrial fluids with similar 

viscosity ranges. Please confirm specific oil type with our technical team for optimal element selection.

Q10: Does the filter cart include a bypass valve?

A: Yes. An integrated overflow bypass valve protects the system if the filter element becomes fully clogged and replacement

 is delayed. However, continuous bypass operation should be avoided.

Q11: What documentation is provided with each filter cart?

A: Each unit is supplied with a certificate of conformance, factory test report (including hydraulic parameters), dimensional 

inspection record, and operation manual. Additional certifications are available upon request.

Q12: Do you offer trial orders or on-site testing?

A: Yes. We support 30–60 days on-site trial operation. Sample testing and performance verification are available. 

Please contact our team to arrange a trial program.

Q13: What power supply options are available?

A: Standard configuration is 380V/50Hz industrial power. Custom voltage and frequency configurations 

(e.g., 220V, 415V, 460V, 60Hz) are available upon request.

Q14: Do you offer explosion-proof versions?

A: Yes. Explosion-proof versions with EX-rated motors and electrical components are available for hazardous environments 

such as oil fields, chemical plants, and offshore platforms. Please specify your requirement when ordering.