ElementRef

Schroeder Industries · BestFit Elements · inline line

CZ1 filter element: specifications & equivalents

The CZ1 is a Schroeder Industries inline-line hydraulic filter element, built with excellement® z-media® (synthetic) media, sized 74 × 119 mm OD × length (ID 28 mm), rated at 1 µm class (4.2 µm at β(c) ≥ 1000 (99.9% efficiency)). Verify against the current manufacturer data sheet before ordering.

Envelope OD × L 74 × 119 mm
Inside diameter 28 mm
Filtration rating 1 µm nom.
Beta rating 4.2 µm at β(c) ≥ 1000 (99.9% efficiency)
Media Excellement® Z-Media® (Synthetic)
Collapse / burst 10.3 bar
Line type inline
Catalog verified. Parameters extracted from the manufacturer’s electronic catalog / official interchange document and checked 2026-09-28. Confidence score 0.90.

Dimensions, ratings and seal compound are taken from the Schroeder Industries online catalog. The nominal µm rating and the β200 absolute rating use different conventions — match the existing media grade before substituting; verify against the current Schroeder data sheet before ordering.

Specification table

ParameterValue
Filter type inline line
Media Excellement® Z-Media® (Synthetic)
Filtration rating 1 µm
Rating basis nominal
Beta ratio 4.2 µm at β(c) ≥ 1000 (99.9% efficiency)
Outside diameter OD 74 mm
Inside diameter ID 28 mm
Length 119 mm
End caps open-ended cartridge element
Collapse / burst pressure 10.3 bar
Integral bypass valve none (housing/valve-dependent)
Seal material Nitrile (Buna-N)
Operating temperature -29 to 107 °C
Mass 320 g
Source catalog Schroeder Industries: Schroeder Industries online catalog (catalog.schroederindustries.com)
Last verified2026-09-28

Sources: Schroeder Industries — Schroeder Industries online catalog (catalog.schroederindustries.com) — accessed 2026-09-28.

Schroeder Industries® and all model designations are trademarks of their respective owners, used here for identification only — ElementRef is an independent reference site, not an authorized Schroeder Industries distributor.

Dimensions & series range

Outside diameter74 mm (2.913 in)
Inside diameter28 mm (1.102 in)
Overall length119 mm (4.685 in)

All 74×119 mm interchange elements →

Cross references & equivalents

Equivalent modelBrandMatch levelNote
↔ 50405R03B
page in verification queue
AftermarketpartialSchroeder online cross-reference (HYDAC); envelope match — verify grade and seals.
↔ 50405R03BN
page in verification queue
AftermarketpartialSchroeder online cross-reference (HYDAC); envelope match — verify grade and seals.
↔ HC9725FCP5H
page in verification queue
PallpartialSchroeder online cross-reference (PALL); envelope match — verify grade and seals.
↔ HC9725FCZ5H
page in verification queue
PallpartialSchroeder online cross-reference (PALL); envelope match — verify grade and seals.
↔ HC9725FDP5H
page in verification queue
PallpartialSchroeder online cross-reference (PALL); envelope match — verify grade and seals.
↔ HC9725FDZ5H
page in verification queue
PallpartialSchroeder online cross-reference (PALL); envelope match — verify grade and seals.
↔ HC9725FKZ5H
page in verification queue
PallpartialSchroeder online cross-reference (PALL); envelope match — verify grade and seals.
↔ HC9725FMZ5H
page in verification queue
PallpartialSchroeder online cross-reference (PALL); envelope match — verify grade and seals.
↔ HC9725FUP5H
page in verification queue
PallpartialSchroeder online cross-reference (PALL); envelope match — verify grade and seals.
↔ HC9725FUZ5H
page in verification queue
PallpartialSchroeder online cross-reference (PALL); envelope match — verify grade and seals.
↔ MP2035
page in verification queue
MP FiltripartialSchroeder online cross-reference (MP FILTRI); envelope match — verify grade and seals.

Interchange levels: full catalog-confirmed drop-in · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.

How the CZ1 model number is decoded

  • CZ1Schroeder BestFit filter element part number of the C housing-size family.
  • Excellement® Z-Media® (Synthetic)Filter media execution.
  • 1 µmNominal filter rating as printed in the Schroeder catalog.
  • β≥1000Absolute rating: 4.2 µm particle size at β(c) ≥ 1000, 99.9% efficiency.
  • 74 mmOuter diameter.
  • 28 mmInner diameter.
  • 119 mmElement height.
  • 10.3 barElement collapse pressure rating.
  • Nitrile (Buna-N)Seal compound.

Typical equipment & applications

  • Replacement element for Schroeder hydraulic and lube filter housings
  • Industrial and mobile hydraulic filtration

Selection pitfalls — read before you substitute

  • “10 µm nominal” and “12 µm at β1000” can describe the very same media — one is reported at β≥200, the other at β≥1000 per ISO 16889. Compare ratings at the same Beta test point, not just the printed micron number.
  • Nitrile (NBR) seals are standard for mineral hydraulic oil but fail early in some phosphate-ester fluids and at sustained high temperature; verify seal compound against the fluid data sheet (fluorocarbon/Viton executions may be required).
  • Fine 1 µm media loads faster and runs at a higher cold Δp than coarser grades — only downgrade cleanliness targets if the system ISO 4406 code allows it.
  • End-cap geometry and the number/position of O-rings block interchange even when OD and length match — visually compare end caps before fitting, especially with aftermarket cartridges.

Frequently asked questions

What are the dimensions of the CZ1 filter element?
The published envelope is 74 mm OD × 119 mm length with a 28 mm inside diameter (2.913 × 4.685 in × 1.102 in ID). Confirm against the housing drawing before ordering.
What micron rating does CZ1 use?
This element is rated 1 µm (nominal class) — 4.2 µm at β(c) ≥ 1000 (99.9% efficiency). Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.
What replaces the CZ1 filter element?
11 partial match(es) requiring parameter review
How do I read the CZ1 part number?
See the designation decoder above: each segment of CZ1 encodes size, line type, filtration grade and media/collapse execution.
Is a same-envelope aftermarket element always a drop-in replacement?
No. Matching OD and length only proves the cartridge fits the bowl. End-cap style, seal compound, micron/Beta rating, collapse pressure and bypass configuration must also match; the table above tags every equivalent as full, partial or verify for exactly this reason.
How often should a hydraulic return-line element be replaced?
Replace at the housing manufacturer’s recommended differential-pressure setting (commonly signalled by a clogging indicator), or on a time-based service interval when no indicator is fitted — never wait for bypass to open continuously, because unfiltered oil then reaches the valves.

Same-envelope elements from other brands

View full interchange →

These 23 catalog element(s) share the 74×119 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.

C10 Schroeder Industries · 10 µm C25 Schroeder Industries · 25 µm C3 Schroeder Industries · 3 µm C3C Schroeder Industries · 3 µm CAS10 Schroeder Industries · 10 µm CAS3 Schroeder Industries · 3 µm CAS5 Schroeder Industries · 5 µm CZ10 Schroeder Industries · 10 µm CZ10H Schroeder Industries · 10 µm CZ10V Schroeder Industries · 10 µm

Other models in the BestFit Elements series

All 1082 →
10DVZ1 74×249 mm · 1 µm 10DVZ10 74×249 mm · 10 µm 10DVZ10V 74×249 mm · 10 µm 10DVZ25 74×249 mm · 25 µm 10DVZ3 74×249 mm · 3 µm 10DVZ5 74×249 mm · 5 µm 13HAS10 91×328 mm · 10 µm 13HASX10 91×328 mm · 10 µm 13HZ10 91×328 mm · 10 µm 13HZ10V 91×328 mm · 10 µm

Reviewed & verified by the ElementRef engineering desk against Schroeder Industries on 2026-09-28. Read our editorial & correction policy.