Schroeder Industries · BestFit Elements · inline line

DD3 filter element: specifications & equivalents

Q: What are the dimensions of the DD3 filter element?

The published envelope is 66 mm OD × 246 mm length with a 28 mm inside diameter (2.598 × 9.685 in × 1.102 in ID). Confirm against the housing drawing before ordering.

Q: What micron rating does DD3 use?

This element is rated 3 µm (nominal class) — 10 µm at β(c) ≥ 200 (99.5% efficiency). Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.

The DD3 is a Schroeder Industries inline-line hydraulic filter element, built with e media (cellulose) media, sized 66 × 246 mm OD × length (ID 28 mm), rated at 3 µm class (10 µm at β(c) ≥ 200 (99.5% efficiency)). Verify against the current manufacturer data sheet before ordering.

Envelope OD × L 66 × 246 mm

Inside diameter 28 mm

Filtration rating 3 µm nom.

Beta rating 10 µm at β(c) ≥ 200 (99.5% efficiency)

Media E Media (Cellulose)

Collapse / burst 10.3 bar

Line type inline

Catalog verified. Parameters extracted from the manufacturer’s electronic catalog / official interchange document and checked 2026-09-28. Confidence score 0.90.

Dimensions, ratings and seal compound are taken from the Schroeder Industries online catalog. The nominal µm rating and the β200 absolute rating use different conventions — match the existing media grade before substituting; verify against the current Schroeder data sheet before ordering.

Specification table

Parameter	Value
Filter type	inline line
Media	E Media (Cellulose)
Filtration rating	3 µm
Rating basis	nominal
Beta ratio	10 µm at β(c) ≥ 200 (99.5% efficiency)
Outside diameter OD	66 mm
Inside diameter ID	28 mm
Length	246 mm
End caps	open-ended cartridge element
Collapse / burst pressure	10.3 bar
Integral bypass valve	none (housing/valve-dependent)
Seal material	Nitrile (Buna-N)
Operating temperature	-29 to 107 °C
Mass	230 g
Source catalog	Schroeder Industries: Schroeder Industries online catalog (catalog.schroederindustries.com)
Last verified	2026-09-28

Sources: Schroeder Industries — Schroeder Industries online catalog (catalog.schroederindustries.com) — accessed 2026-09-28.

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

Dimensions & series range

Outside diameter	66 mm (2.598 in)
Inside diameter	28 mm (1.102 in)
Overall length	246 mm (9.685 in)

All 66×246 mm interchange elements →

Cross references & equivalents

Equivalent model	Brand	Match level	Note
↔ 50610R05BN page in verification queue	Aftermarket	partial	Schroeder online cross-reference (HYDAC); envelope match — verify grade and seals.
↔ 935133	Parker	partial	Schroeder online cross-reference (PARKER); envelope match — verify grade and seals.
↔ BED1003N page in verification queue	Aftermarket	partial	Schroeder online cross-reference (BEHRINGER); envelope match — verify grade and seals.
↔ HF7313	Fleetguard	partial	Fleetguard's online catalog lists DD3 as an interchange for HF7313. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HF7317	Fleetguard	partial	Fleetguard's online catalog lists DD3 as an interchange for HF7317. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HPDL103MB page in verification queue	Aftermarket	partial	Schroeder online cross-reference (HY-PRO); envelope match — verify grade and seals.
↔ MF0201627 page in verification queue	Aftermarket	partial	Schroeder online cross-reference (MAIN FILTER INC); envelope match — verify grade and seals.
↔ MP2063 page in verification queue	MP Filtri	partial	Schroeder online cross-reference (MP FILTRI); envelope match — verify grade and seals.
↔ PT8329	Baldwin Filters	partial	Baldwin's Form 561 Number-Finder cross-reference lists DD3 (SCHROEDER) as replaced by Baldwin PT8329. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting.
↔ SCU1654 page in verification queue	Aftermarket	partial	Schroeder online cross-reference (NORMAN); envelope match — verify grade and seals.

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 DD3 model number is decoded

DD3Schroeder BestFit filter element part number of the DD housing-size family.
E Media (Cellulose)Filter media execution.
3 µmNominal filter rating as printed in the Schroeder catalog.
β≥200Absolute rating: 10 µm particle size at β(c) ≥ 200, 99.5% efficiency.
66 mmOuter diameter.
28 mmInner diameter.
246 mmElement height.
10.3 barElement collapse pressure rating.
Nitrile (Buna-N)Seal compound.

Typical equipment & applications

Replacement element for Schroeder hydraulic and lube filter housings
Industrial and mobile hydraulic filtration

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 DD3 filter element?

The published envelope is 66 mm OD × 246 mm length with a 28 mm inside diameter (2.598 × 9.685 in × 1.102 in ID). Confirm against the housing drawing before ordering.

What micron rating does DD3 use?

This element is rated 3 µm (nominal class) — 10 µm at β(c) ≥ 200 (99.5% efficiency). Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.

What replaces the DD3 filter element?

10 partial match(es) requiring parameter review

How do I read the DD3 part number?

See the designation decoder above: each segment of DD3 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 6 catalog element(s) share the 66×246 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.

4.08.10 D 05 BN4 /-V HYDAC · 5 µm DD10 Schroeder Industries · 10 µm DD25 Schroeder Industries · 25 µm DDM10 Schroeder Industries · 10 µm DDM10V Schroeder Industries · 10 µm DDM60 Schroeder Industries · 60 µm

Other models in the BestFit Elements series

All 1082 →

10DVZ1 74×249 mm · 1 µm 10DVZ10 74×249 mm · 10 µm 10DVZ10V 74×249 mm · 10 µm 10DVZ25 74×249 mm · 25 µm 10DVZ3 74×249 mm · 3 µm 10DVZ5 74×249 mm · 5 µm 13HAS10 91×328 mm · 10 µm 13HASX10 91×328 mm · 10 µm 13HZ10 91×328 mm · 10 µm 13HZ10V 91×328 mm · 10 µm

Reviewed & verified by the ElementRef engineering desk against Schroeder Industries on 2026-09-28. Read our editorial & correction policy.