HYDAC · Betamicron 4 D/DN · pressure line

0040 DN 003 BN4HC filter element: specifications & equivalents

Q: What are the dimensions of the 0040 DN 003 BN4HC filter element?

The published envelope is 45.7 mm OD × 99.1 mm length with a 22.1 mm inside diameter (1.799 × 3.902 in × 0.870 in ID). Confirm against the housing drawing before ordering.

Q: What micron rating does 0040 DN 003 BN4HC use?

This element is rated 3 µm absolute — ßx(c) ≥ 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 0040 DN 003 BN4HC is a HYDAC pressure-line hydraulic filter element, built with bn/hc=betamicron® low collapse media, sized 45.7 × 99.1 mm OD × length (ID 22.1 mm), rated at 3 µm absolute (ßx(c) ≥ 1000 (HYDAC grade convention: β5(c) ≥ 1000)). Verify against the current manufacturer data sheet before ordering.

Envelope OD × L 45.7 × 99.1 mm

Inside diameter 22.1 mm

Filtration rating 3 µm abs.

Beta rating ßx(c) ≥ 1000 (HYDAC grade convention: β5(c) ≥ 1000)

Media BN/HC=Betamicron® Low Collapse

Collapse / burst 20 bar

Line type pressure

Catalog verified. Parameters extracted from the manufacturer’s electronic catalog / official interchange document and checked 2026-09-28. Confidence score 0.92.

Dimensions, ratings and seal compound are taken directly from the HYDAC electronic catalog (catalog.hydac.com). Outside diameter and length are converted from the inch values printed on the catalog page; verify against the current HYDAC data sheet before ordering.

Specification table

Parameter	Value
Filter type	pressure line
Media	BN/HC=Betamicron® Low Collapse
Filtration rating	3 µm
Rating basis	absolute
Beta ratio	ßx(c) ≥ 1000 (HYDAC grade convention: β5(c) ≥ 1000)
Outside diameter OD	45.7 mm
Inside diameter ID	22.1 mm
Length	99.1 mm
End caps	open-ended cartridge element
Flow direction	outside-in
Collapse / burst pressure	20 bar
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	2026-09-28

Sources: HYDAC Technology Corporation — HYDAC electronic product catalog (catalog.hydac.com) — accessed 2026-09-29.

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.

Dimensions & series range

Outside diameter	45.7 mm (1.799 in)
Inside diameter	22.1 mm (0.870 in)
Overall length	99.1 mm (3.902 in)

All 46×99 mm interchange elements →

Cross references & equivalents

Equivalent model	Brand	Match level	Note
↔ 01.NL 40.3VG.30.E.P.-	Eaton / Internormen	partial	Eaton's filtration cross-reference lists 0040DN003BN4HC (Hydac) as an interchange for 01.NL 40.3VG.30.E.P.-. Envelope cross-reference; verify micron grade, delta-P rating and seal configuration before substituting.
↔ NL-040-E-03-B	STAUFF	partial	STAUFF Filter Interchange lists 0040 DN 003 BN4HC (HYDAC) as replaced by NL-040-E-03-B. 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 0040 DN 003 BN4HC model number is decoded

0040 DN 003 BN4HCHYDAC Type DN filter element ordering code per the HYDAC electronic catalog (s16).
BN/HC=Betamicron® Low CollapseFilter media and collapse family as printed in the catalog.
3 µmAbsolute filter rating per the HYDAC catalog.
ßx(c) ≥ 1000Beta ratio rating as printed in the catalog.
45.7 mmOutside diameter.
22.1 mmInner diameter.
99.1 mmElement length.
20 barElement collapse (differential pressure) rating.
Nitrile (Buna-N)Seal compound.

Typical equipment & applications

Pressure-line filtration for HYDAC DF/DFF and equivalent housings
Industrial and mobile hydraulic systems

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 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 0040 DN 003 BN4HC filter element?

The published envelope is 45.7 mm OD × 99.1 mm length with a 22.1 mm inside diameter (1.799 × 3.902 in × 0.870 in ID). Confirm against the housing drawing before ordering.

What micron rating does 0040 DN 003 BN4HC use?

This element is rated 3 µm absolute — ßx(c) ≥ 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 0040 DN 003 BN4HC filter element?

2 partial match(es) requiring parameter review

How do I read the 0040 DN 003 BN4HC part number?

See the designation decoder above: each segment of 0040DN003BN4HC 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 11 catalog element(s) share the 46×99 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.

0040 DN 003 BH4HC HYDAC · 3 µm 0040 DN 006 BH4HC HYDAC · 6 µm 0040 DN 006 BN4HC HYDAC · 6 µm 0040 DN 010 BH4HC HYDAC · 10 µm 0040 DN 010 BN4HC HYDAC · 10 µm 0040 DN 025 BN4HC HYDAC · 25 µm 0040 DN 025 W/HC HYDAC · 25 µm 0040 DN 100 W/HC HYDAC · 100 µm 3.510 D 010 BN4 HYDAC · 10 µm 3.510 D 10 BNK4 HYDAC · 10 µm

Other models in the Betamicron 4 D/DN series

All 809 →

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 2026-09-28. Read our editorial & correction policy.