High-Performance Hydraulic Oil Filter Elements – Models 020123-052 & 020123-058

Two replacement hydraulic filter elements from the same 020123 series, designed as inline or return-line cartridges for industrial hydraulic power units, compressor lube circuits, and mobile equipment. Both are built on a corrugated glass-fiber media pack qualified to ISO 16889 multi-pass testing, with gradient-density construction for high dirt-holding capacity and low initial pressure drop. The "-052" and "-058" suffixes denote different length / dirt-holding grades within the same housing family — confirming the exact dimensional envelope (OD, length, thread, or flange pattern) is required at time of order.

Key Features

• Glass-fiber composite media, micron grade selectable per application (typical 10 µm, β₁₀ ≥ 200)

  
  

• Corrugated media pack increases effective filtration area, lowering initial ΔP to < 1.0 bar at rated flow

  
  

• Gradient-density structure improves contaminant retention and extends service life

  
  

• Perforated steel center tube, collapse pressure up to 30 bar (return) / 42 MPa (pressure-grade trims)

  
  

• NBR end seals standard; FKM available for high-temperature or ester-fluid duty

  
  

• Rated for continuous operation up to 135 °C in high-temperature return loops

  
  

Technical Specifications

Exact OD, length, and mounting interface (thread / flange / cage) vary by suffix — confirm against your existing element before ordering.

Application Guidance

Both elements serve return-line and low-pressure inline duties on hydraulic power units, screw-compressor lube circuits, injection molding machines, press brakes, and mobile equipment. The corrugated media geometry is specifically engineered to maximize dirt-holding capacity in return circuits where flow is continuous but pressure is modest (typically ≤ 8 bar return-line pressure).

Selecting between 020123-052 and 020123-058 depends on:

• Available housing space (length constraint)

  
  

• Required dirt-holding capacity (longer element = longer service interval)

  
  

• Flow rate (higher flow → larger element)

  
  

📎 Per ISO 16889:2022, both elements are evaluated using the multi-pass method with continuous injection of ISO Medium Test Dust, measuring particulate removal (β-ratio), dirt-holding capacity, and differential pressure characteristics — providing a standardized, repeatable benchmark for filter performance.

Fluid Compatibility

• Mineral hydraulic oil (ISO HM, HV)

  
  

• Biodegradable esters (HEES, HETG) — use FKM seals

  
  

• HFC water-glycol — NBR acceptable; FKM recommended

  
  

• Not for phosphate ester (HFDR) without media/seal confirmation

  
  

Installation & Service

1. Depressurize the hydraulic circuit to 0 bar; drain or isolate the filter housing.

   
   

2. Open the housing, withdraw the old element by its center tube.

   
   

3. Inspect the housing interior, bypass spring, and seal grooves.

   
   

4. Seat the new element — confirm flow direction arrow (typically outside → inside for return elements).

   
   

5. Renew all O-rings / seals supplied with the element; torque housing bolts evenly.

   
   

6. Bleed air at the housing bleed port; restart and check for leaks at operating pressure.

   
   

7. Replace when the clogging indicator triggers or ΔP reaches the bypass setting (typically 2.5–3 bar).

   
   

Quality Assurance

• ISO 16889:2022 – Multi-pass filtration performance (β-ratio, dirt capacity, ΔP)

  
  

• ISO 2941 – Collapse/burst resistance

  
  

• ISO 2942 – Manufacturing integrity (bubble-point)

  
  

• ISO 2943 – Media/fluid compatibility

  
  

• ISO 3968 – Flow-fatigue and pressure-drop characterization

  
  

Ordering

Specify 020123-052 or 020123-058 together with:

• Required micron rating (5 / 10 / 20 µm)

  
  

• Seal material (NBR / FKM)

  
  

• Mounting details (OD, length, thread or flange pattern of your current element)

  
  

Provide your existing element's dimensions or the host machine model and current OEM part number for cross-reference confirmation. Custom dimensions and filtration grades are available on request within the 020123 series.

All values nominal; the precise OD, length, and interface geometry differ between -052 and -058 suffixes. Confirm against your current element or housing drawing before installation.