Eaton / Internormen · 01.E / 01.N / Easy-Fit · return line
01.E 320.3VG.16.E.P.- filter element: specifications & equivalents
The 01.E 320.3VG.16.E.P.- is a Eaton / Internormen return-line hydraulic filter element, built with glass fiber fleece (vg) media, sized 70 × 305 mm OD × length, rated at 5 µm absolute. Verify against the current manufacturer data sheet before ordering.
Specs come from Eaton's product data hub via its site-search API. The µm retention rating follows ISO 16889 (absolute convention), while the model-code fineness grade is nominal — match both before substituting.
Specification table
| Parameter | Value |
|---|---|
| Filter type | return line |
| Media | Glass fiber fleece (VG) |
| Filtration rating | 5 µm |
| Rating basis | absolute |
| Outside diameter OD | 70 mm |
| Length | 305 mm |
| End caps | open-ended cartridge element |
| Collapse / burst pressure | 16 bar |
| Integral bypass valve | none (housing/valve-dependent) |
| Seal material | Nitrile (Buna-N) |
| Manufacturer part no. | 305639 |
| Source catalog | Eaton: Eaton product data hub via site search API (eaton.com) |
| Last verified | 2026-09-28 |
Sources: Eaton — Eaton product data hub via site search API (eaton.com) — accessed 2026-09-29.
Eaton / Internormen® and all model designations are trademarks of their respective owners, used here for identification only — ElementRef is an independent reference site, not an authorized Eaton / Internormen distributor.
Dimensions & series range
| Outside diameter | 70 mm (2.756 in) |
| Overall length | 305 mm (12.008 in) |
All 70×305 mm interchange elements →
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
|
↔ 938166Q page in verification queue | Aftermarket | partial | Eaton's filtration cross-reference lists 938166Q (Parker) as an interchange for 01.E 320.3VG.16.E.P.-. Envelope cross-reference; verify micron grade, delta-P rating and seal configuration before substituting. |
| ↔ RN-075-E-03-B-NB | STAUFF | partial | STAUFF Filter Interchange lists 01.E320. 3VG.16.E.P (INTERNORMEN) as replaced by RN-075-E-03-B-NB. Envelope dimensions are published; media grade and performance data are not — confirm before substituting in cleanliness-critical circuits. |
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 01.E 320.3VG.16.E.P.- model number is decoded
- 01.E 320.3VG.16.E.P.-Eaton 01.E Return-Line filter element model code (Eaton 01.E Return line Filter Element).
- 305639Eaton catalog number (order code) for the same element.
- 3 VGFilter fineness grade: nominal rating and media letter.
- 5 µmISO 16889 multipass retention rating as published by Eaton.
- Glass fiber fleece (VG)Filter media execution.
- 16 barDelta-P resistance class — maximum differential pressure (collapse) rating.
- Nitrile (Buna-N)Seal compound.
- 70 mmOuter diameter.
- 305 mmElement height.
Typical equipment & applications
- Tank-mounted return-line hydraulic filters
- Hydraulic power units and lubrication systems
- Construction and agricultural machinery
- Machine tool and industrial hydraulic systems
Selection pitfalls — read before you substitute
- A return-line element is not a pressure-line element: return cartridges (low-collapse) tolerate roughly 20 bar differential, while BH4HC pressure executions are rated to 210 bar. Installing a low-collapse element in a pressure housing can rupture the media on cold-start spikes.
- This element has no integral bypass — opening pressure is set by the housing’s reusable bypass valve. Confirm the valve setting (commonly 3.4 bar) is present before fitting.
- “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 5 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 01.E 320.3VG.16.E.P.- filter element?
What micron rating does 01.E 320.3VG.16.E.P.- use?
What replaces the 01.E 320.3VG.16.E.P.- filter element?
How do I read the 01.E 320.3VG.16.E.P.- part number?
Is a same-envelope aftermarket element always a drop-in replacement?
How often should a hydraulic return-line element be replaced?
Same-envelope elements from other brands
View full interchange →These 49 catalog element(s) share the 70×305 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.
Other models in the 01.E / 01.N / Easy-Fit series
All 3329 →Reviewed & verified by the ElementRef engineering desk against Eaton on 2026-09-28. Read our editorial & correction policy.