HYDAC · Betamicron 4 R · return line
9.05.14MA50BN filter element: specifications & equivalents
The 9.05.14MA50BN is a HYDAC return-line hydraulic filter element, built with bn/hc=betamicron® low capacity media, sized 119.4 × 360.7 mm OD × length (ID 44.5 mm). Verify against the current manufacturer data sheet before ordering.
HYDAC Betterfit element — dimensions and ratings are taken from catalog.hydac.com. This is HYDAC's drop-in replacement for a Donaldson 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
| Parameter | Value |
|---|---|
| Filter type | return line |
| Media | BN/HC=Betamicron® Low Capacity |
| Beta ratio | ßx(c) ≥ 1000 |
| Outside diameter OD | 119.4 mm |
| Inside diameter ID | 44.5 mm |
| Length | 360.7 mm |
| End caps | open-ended cartridge element |
| 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 | 119.4 mm (4.701 in) |
| Inside diameter | 44.5 mm (1.752 in) |
| Overall length | 360.7 mm (14.201 in) |
All 119×361 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 9.05.14MA50BN model number is decoded
- 9.05.14MA50BNHYDAC Betterfit filter element ordering code per catalog.hydac.com. Replaces Donaldson elements.
- BN/HC=Betamicron® Low CapacityFilter media and collapse family as printed in the catalog.
- 119.4 mmOutside diameter.
- 360.7 mmElement length.
- 20 barElement collapse (differential pressure) rating.
- Nitrile (Buna-N)Seal compound.
Typical equipment & applications
- HYDAC Betterfit drop-in replacement for Donaldson hydraulic filter elements
- Return-line filtration for equivalent housings
Selection pitfalls — read before you substitute
- A return-line element is not a pressure-line element: return cartridges (BN4HC low-collapse) tolerate roughly 20 bar differential, while BH4HC pressure executions are rated to 210 bar. Installing a low-collapse element in a pressure housing can rupture the media on cold-start spikes.
- This element has no integral bypass — opening pressure is set by the housing’s reusable bypass valve. Confirm the valve setting (commonly 3.4 bar) is present before fitting.
- “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 9.05.14MA50BN filter element?
What replaces the 9.05.14MA50BN filter element?
How do I read the 9.05.14MA50BN part number?
Is a same-envelope aftermarket element always a drop-in replacement?
How often should a hydraulic return-line element be replaced?
Same-envelope elements from other brands
View full interchange →These 1 catalog element(s) share the 119×361 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.
Other models in the Betamicron 4 R series
All 929 →Reviewed & verified by the ElementRef engineering desk against HYDAC Technology Corporation on 2026-09-28. Read our editorial & correction policy.