HYDAC · Betamicron 4 D/DN · pressure line

5.03.20 D 03 BN4 filter element: specifications & equivalents

Q: What are the dimensions of the 5.03.20 D 03 BN4 filter element?

The published envelope is 152.4 mm OD × 7.6 mm length with a 96.1 mm inside diameter (6.000 × 0.299 in × 3.783 in ID). Confirm against the housing drawing before ordering.

Q: What micron rating does 5.03.20 D 03 BN4 use?

This element is rated 3 µm absolute — β3 > 1000 (HYDAC grade convention: β5(c) ≥ 1000). Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.

The 5.03.20 D 03 BN4 is a HYDAC pressure-line hydraulic filter element, built with bn/hc=betamicron® low collapse media, sized 152.4 × 7.6 mm OD × length (ID 96.1 mm), rated at 3 µm absolute (β3 > 1000 (HYDAC grade convention: β5(c) ≥ 1000)). Verify against the current manufacturer data sheet before ordering.

Envelope OD × L 152.4 × 7.6 mm

Inside diameter 96.1 mm

Filtration rating 3 µm abs.

Beta rating β 3 > 1000 (HYDAC grade convention: β5(c) ≥ 1000)

Media BN/HC=Betamicron® Low Collapse

Line type pressure

Catalog verified. Parameters extracted from the manufacturer’s electronic catalog / official interchange document and checked 2026-10-16. Confidence score 0.90.

HYDAC Betterfit element — dimensions and ratings are taken from catalog.hydac.com. HYDAC lists this as a drop-in replacement for Schroeder elements; the exact competitor part number is not published on the catalog page. Verify form/fit and micron grade against the competitor data sheet before substituting.

Specification table

Parameter	Value
Filter type	pressure line
Media	BN/HC=Betamicron® Low Collapse
Filtration rating	3 µm
Rating basis	absolute
Beta ratio	β3 > 1000 (HYDAC grade convention: β5(c) ≥ 1000)
Outside diameter OD	152.4 mm
Inside diameter ID	96.1 mm
Length	7.6 mm
End caps	open-ended cartridge element
Flow direction	inside-out
Integral bypass valve	none (housing/valve-dependent)
Seal material	Nitrile (Buna-N)
Operating temperature	-30 to 100 °C
Source catalog	HYDAC Technology Corporation: HYDAC electronic product catalog (catalog.hydac.com)
Last verified	2026-10-16

Sources: HYDAC Technology Corporation — HYDAC electronic product catalog (catalog.hydac.com) — accessed 2026-10-16.

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

Dimensional drawing

Reference drawing generated from the source values cited on this page — nominal envelope, schematic section, not a manufacturer drawing. The PDF is A3 landscape and vector; the PNG is sized for a WhatsApp preview. Confirm thread, end caps, seal compound and micron/Beta grade against the original element before ordering.

Dimensions & series range

Outside diameter	152.4 mm (6.000 in)
Inside diameter	96.1 mm (3.783 in)
Overall length	7.6 mm (0.299 in)

Cross references & equivalents

No catalog-verified cross references yet. This model is in the manual verification queue — request a verified equivalent.

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.

Full chart: HYDAC cross reference chart →

How the 5.03.20 D 03 BN4 model number is decoded

5.03.20 D 03 BN4HYDAC Betterfit filter element ordering code per catalog.hydac.com. Replaces Schroeder elements.
BN/HC=Betamicron® Low CollapseFilter media and collapse family as printed in the catalog.
3 µmAbsolute filter rating per the HYDAC catalog.
152.4 mmOutside diameter.
7.6 mmElement length.
Nitrile (Buna-N)Seal compound.

Typical equipment & applications

HYDAC Betterfit drop-in replacement for Schroeder hydraulic filter elements
Pressure-line filtration for equivalent housings

Selection pitfalls — read before you substitute

Line type is not interchangeable: return-line cartridges are low-collapse executions that typically tolerate roughly 10–20 bar differential, while pressure-line elements are commonly rated 100–210 bar. Installing a low-collapse element in a pressure housing can rupture the media on cold-start spikes.
“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.
This execution uses nitrile (buna-n) seals — verify the compound against the fluid data sheet: standard nitrile (NBR) can fail early in phosphate-ester fluids and at sustained high temperature, where fluorocarbon/Viton executions may be required.
Fine 3 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 5.03.20 D 03 BN4 filter element?

The published envelope is 152.4 mm OD × 7.6 mm length with a 96.1 mm inside diameter (6.000 × 0.299 in × 3.783 in ID). Confirm against the housing drawing before ordering.

What micron rating does 5.03.20 D 03 BN4 use?

This element is rated 3 µm absolute — β3 > 1000 (HYDAC grade convention: β5(c) ≥ 1000). Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.

What replaces the 5.03.20 D 03 BN4 filter element?

Cross references are being verified for this model — use the inquiry form and the engineering desk will confirm equivalents.

How do I read the 5.03.20 D 03 BN4 part number?

See the designation decoder above: each segment of 50320D03BN4 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 filter 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.

Other models in the Betamicron 4 D/DN series

All 897 (list page 2/2) →

0015 D 010 BN4HC 35×42 mm · 10 µm 0030 D 003 BH4HC 36×94 mm · 3 µm 0030 D 003 BH4HC /-V 36×94 mm · 3 µm 0030 D 003 BN4HC 36×94 mm · 3 µm 0030 D 003 BN4HC /-V 36×94 mm · 3 µm 0030 D 005 BH4HC 36×94 mm · 5 µm 0030 D 005 BH4HC /-V 36×94 mm · 5 µm 0030 D 005 BN4HC 36×94 mm · 5 µm 0030 D 010 BH4HC 36×94 mm · 10 µm 0030 D 010 BN4HC 36×94 mm · 10 µm

Reviewed & verified by the ElementRef engineering desk against HYDAC Technology Corporation on 2026-10-16. Read our editorial & correction policy.