ElementRef

HYDAC · Betamicron 4 D/DN · pressure line

12.02.34 D 05 BN4 /-2.625 filter element: specifications & equivalents

The 12.02.34 D 05 BN4 /-2.625 is a HYDAC pressure-line hydraulic filter element, built with bn/hc=betamicron® low collapse media, sized 152.4 × 866.1 mm OD × length (ID 67.31 mm), rated at 5 µm absolute (β05 > 1000 (HYDAC grade convention: β7(c) ≥ 1000)). Verify against the current manufacturer data sheet before ordering.

Envelope OD × L 152.4 × 866.1 mm
Inside diameter 67.31 mm
Filtration rating 5 µm abs.
Beta rating β 05 > 1000 (HYDAC grade convention: β7(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 2026-09-28. Confidence score 0.90.

HYDAC Betterfit element — dimensions and ratings are taken from catalog.hydac.com. This is HYDAC's drop-in replacement for a Hilliard element; 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

ParameterValue
Filter type pressure line
Media BN/HC=Betamicron® Low Collapse
Filtration rating 5 µm
Rating basis absolute
Beta ratio β05 > 1000 (HYDAC grade convention: β7(c) ≥ 1000)
Outside diameter OD 152.4 mm
Inside diameter ID 67.31 mm
Length 866.1 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 verified2026-09-28

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 diameter152.4 mm (6.000 in)
Inside diameter67.31 mm (2.650 in)
Overall length866.1 mm (34.098 in)

All 152×866 mm interchange elements →

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.

How the 12.02.34 D 05 BN4 /-2.625 model number is decoded

  • 12.02.34 D 05 BN4 /-2.625HYDAC Betterfit filter element ordering code per catalog.hydac.com. Replaces Hilliard elements.
  • BN/HC=Betamicron® Low CollapseFilter media and collapse family as printed in the catalog.
  • 5 µmAbsolute filter rating per the HYDAC catalog.
  • 152.4 mmOutside diameter.
  • 866.1 mmElement length.
  • Nitrile (Buna-N)Seal compound.

Typical equipment & applications

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

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 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 12.02.34 D 05 BN4 /-2.625 filter element?
The published envelope is 152.4 mm OD × 866.1 mm length with a 67.31 mm inside diameter (6.000 × 34.098 in × 2.650 in ID). Confirm against the housing drawing before ordering.
What micron rating does 12.02.34 D 05 BN4 /-2.625 use?
This element is rated 5 µm absolute — β05 > 1000 (HYDAC grade convention: β7(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 12.02.34 D 05 BN4 /-2.625 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 12.02.34 D 05 BN4 /-2.625 part number?
See the designation decoder above: each segment of 120234D05BN42625 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 4 catalog element(s) share the 152×866 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.

12.02.34 D 01 BN4 /-2.625 HYDAC · 1 µm 12.02.34 D 03 BN4 /-2.625 HYDAC · 3 µm 12.02.34 D 10 BN4 /-2.625 HYDAC · 10 µm 12.02.34 D 20 BN4 /-2.625 HYDAC · 20 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.