ElementRef

HYDAC · Betamicron 4 D/DN · pressure line

0660 D 010 ON/-SFREE filter element: specifications & equivalents

The 0660 D 010 ON/-SFREE is a HYDAC pressure-line hydraulic filter element, built with on=optimicron low-press. media, sized 91.4 × 330.2 mm OD × length (ID 48 mm), rated at 10 µm absolute (ßx(c) ≥ 1000 (HYDAC grade convention: β12(c) ≥ 1000)). Verify against the current manufacturer data sheet before ordering.

Envelope OD × L 91.4 × 330.2 mm
Inside diameter 48 mm
Filtration rating 10 µm abs.
Beta rating ßx(c) ≥ 1000 (HYDAC grade convention: β12(c) ≥ 1000)
Media ON=Optimicron low-press.
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

ParameterValue
Filter type pressure line
Media ON=Optimicron low-press.
Filtration rating 10 µm
Rating basis absolute
Beta ratio ßx(c) ≥ 1000 (HYDAC grade convention: β12(c) ≥ 1000)
Outside diameter OD 91.4 mm
Inside diameter ID 48 mm
Length 330.2 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 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 diameter91.4 mm (3.598 in)
Inside diameter48 mm (1.890 in)
Overall length330.2 mm (13.000 in)

All 91×330 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 0660 D 010 ON/-SFREE model number is decoded

  • 0660 D 010 ON/-SFREEHYDAC Type D filter element ordering code per the HYDAC electronic catalog (s16).
  • ON=Optimicron low-press.Filter media and collapse family as printed in the catalog.
  • 10 µmAbsolute filter rating per the HYDAC catalog.
  • ßx(c) ≥ 1000Beta ratio rating as printed in the catalog.
  • 91.4 mmOutside diameter.
  • 48 mmInner diameter.
  • 330.2 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).
  • 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 0660 D 010 ON/-SFREE filter element?
The published envelope is 91.4 mm OD × 330.2 mm length with a 48 mm inside diameter (3.598 × 13.000 in × 1.890 in ID). Confirm against the housing drawing before ordering.
What micron rating does 0660 D 010 ON/-SFREE use?
This element is rated 10 µm absolute — ßx(c) ≥ 1000 (HYDAC grade convention: β12(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 0660 D 010 ON/-SFREE 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 0660 D 010 ON/-SFREE part number?
See the designation decoder above: each segment of 0660D010ONSFREE 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 41 catalog element(s) share the 91×330 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.

HF30100 Fleetguard HF30279 Fleetguard HF30505 Fleetguard 0660 D 001 BH4HC /-SFREE HYDAC · 1 µm 0660 D 001 ON HYDAC · 1 µm 0660 D 003 BH4HC HYDAC · 3 µm 0660 D 003 BH4HC /-V HYDAC · 3 µm 0660 D 003 OH/PS HYDAC · 3 µm 0660 D 003 ON HYDAC · 3 µm 0660 D 003 ON/PS HYDAC · 3 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.