HELAC ALTERNATIVE
L10-25-E-RF-180-S1-C-H Rotary Actuator
Alternatives & cross-reference · 180° · 2,825 Nm at 207 bar
Looking for an alternative to the Helac L10-25 rotary actuator? This page covers the 180° rear-flange catalog configuration, with a rated output torque of approximately 2,825 Nm at 207 bar. HM can help review your unit tag, mounting drawings and operating requirements before proposing a suitable solution.
Independently supplied alternative — not an original Helac part. Configuration and fit are confirmed against your unit tag and drawing before ordering.
Cross-reference
Alternatives for Helac L10-25
Compare this unit with other brands at a similar performance level — then send us your tag and mounting drawing and we confirm which option actually fits.
| Brand | Model / series | Key specification |
|---|---|---|
| Helac | L10-25L10-25-E-RF-180-S1-C-H | 2,825 Nm · 180° |
| HKS | M-DA-H 100 | Similar torque class |
Alternative models are compared by published performance specifications. Mounting dimensions and compatibility must be confirmed before ordering.
What HM checks before recommending a fit
Mounting dimensions
Foot / flange pattern, bolt circle and overall envelope.
Shaft interface
Shaft type, spline / key, diameter and flange arrangement (S1/S2).
Rotation & stops
Rotation angle, end stops and cushioning for your mechanism.
Hydraulic connections
Port size/standard (SAE/UNF), position and counterbalance valve.
HM Model Reference
HMR3-280 — HM's closest model in the 2,825 Nm class
This reference sits in the 2,825 Nm class. The closest HM model is HMR3-280 — Helical, L10-style compact front flange — matched on torque class only. The left column repeats what this reference's own record states, reproduced as published; the right column is HM's own rating. The table shows what carries over and what still has to be checked on your unit.
Original
L10-25-E-RF-180-S1-C-H
HM Model Reference
HMR3-280
Rated torque
Rated pressure
Rotation
Mounting
Output shaft
Valve options
| Original L10-25-E-RF-180-S1-C-H | HM HMR3-280 | |
|---|---|---|
| Rated driving torque | 2,825 Nm | 2,825 Nm |
| Rated pressure | 3,000 psi (207 bar) | 210 bar |
| Rotation | 180° | 180° / 360°; stop at 90° available |
| Mounting | Not verified — confirm on unit | FF — Front flange (standard) |
| Output shaft | Not verified — confirm on unit | 1F — Single flange shaft (standard) |
| Valve options | Not verified — confirm on unit | NV / CB / CS |
| Ordering pattern | Not applicable | HMR3-{spec}-{angle}-FF-1F-{valve} |
Left column: this reference's own published figures, reproduced as recorded. Any field the record does not establish is marked “Not verified” and is never filled from HM data. Right column: HM's own rating at HM's stated pressure. Confirm both against the unit nameplate and mounting drawing before ordering.
What carries over
- HM torque class (2,825 Nm) at HM's 210 bar rating.
- Helical, L10-style compact front flange architecture.
- Rotation: 180/360° available on the HMR3 series. A 180/90 code is a 180° unit with the stop set at 90°, not a separate build.
What has to be verified
- Shaft / output flange interface and spline.
- Mounting bolt pattern and pilot register.
- Port size and position, plus valve arrangement (NV / CB / CS).
- Overall envelope and tie-rod clearance.
Comparable performance based on rated torque class for engineering comparison. The mounting interface must be confirmed by our engineering team before quotation.
Same base, other builds
Other configurations of this size
One base size is built in several mountings, angles and valve arrangements. If your unit carries a different code from the one on this page, start from the closest build below.
Code anatomy
What each part of this code means
Every segment below is read from the manufacturer’s published ordering key. Where a segment is not published, we say so instead of guessing — those are the ones to confirm from the tag or the drawing before ordering.
L10-25-E-RF-180-S1-C-H
L10 series
| Segment | Field | What it tells you |
|---|---|---|
| L10 | Series | L10 series — frame size and mounting family |
| 25 | Model size | Size 25 — rated drive torque is set by this number (thousand in-lb class in the L/T key) |
| E | Measurement system | English system — SAE/UNF threads, SAE ports |
| RF | Housing / mounting | Rear flange |
| 180 | Rotation | Standard 180° rotation |
| S1 | Shaft / flanges | Cantilever — shaft flange only (single) |
| C | Valve | Counterbalance valve fitted |
| H | Seals and bearings | Standard seals and bearings |
Full ordering key and how to read a tag: identifying a rotary actuator.
What the 180° sweep changes on this build
A half-turn build: the output travels 180° between two end stops. The sweep is set by the internal stop tube, so a 180° unit cannot be turned into a 360° one by changing the valve or the porting — it is a different internal assembly.
- Two positions, 180° apart — confirm the linkage does not rely on an intermediate stop.
- Hoses only travel half a turn, so a short service loop is normally enough.
- If the duty is a tilt or a quarter-turn swing, this is the sweep the linkage was designed around.
When this sweep is the right build
- Tilt and positioning linkages that only need two end positions — a bucket tilt, a boom offset, a chute flap.
- Machines where the hose run is tight: half a turn needs a much shorter service loop than a full one.
- Where a mid-position stop is not part of the function, so the two end stops are the whole travel.
Confirming the sweep on the machine
- Swing the linkage by hand to both end stops and check the travel is a clean half turn with no mid-travel detent.
- Read the stop positions off the mounting drawing rather than counting turns of the output.
How the sweep sits in the order code
The sweep is the fifth segment of the code. Ordering the same size in the other sweep changes that segment and the internal stop tube behind it; the flange pattern, the shaft end and the valve selection do not change with it. That is why a half-turn build and a full-turn build of one size are quoted as two builds rather than one with an option.
Where these two builds get mixed up
- A half-turn unit is sometimes quoted against a full-turn drawing because the size and mounting match — the sweep is the field that gets dropped in the enquiry.
- A half-turn unit cannot be re-stopped to a full turn in service; if the machine needs more travel, it needs the other build.
Same torque class
Other references our customers compare with this one
These builds sit in the same torque class as the unit on this page. Same class does not mean interchangeable — the mounting interface, shaft and port arrangement are confirmed against your tag or drawing before quoting.
At a glance
Quick reference
- Catalog configuration
- L10-25-E-RF-180-S1-C-H
- Original brand
- Helac
- Type
- Rotary actuator
- Rotation
- 180°
- Output torque @207 bar
- 2,825 Nm
- Unit weight
- 56.7 kg
- Mounting styles
- RF rear flange
Reference only · original manufacturer data
What the original catalogue lists for L10-25 (2,500 in-lb class)
The figures below are the original manufacturer's published catalogue values, kept here so you can compare them with the HM model reference above. They are not HM performance data and they are not a statement of interchangeability.
+Show original catalogue figures (Helac L10 catalog, p. 8)
| Product type | Hydraulic helical rotary actuator |
|---|---|
| Series / size | L10 series · L10-25 (2,500 in-lb class) |
| Catalog configuration | L10-25-E-RF-180-S1-C-H |
| Rotation angle | 180° |
| Rated operating pressure | 207 bar |
| Output (drive) torque @ rated pressure | 2,825 Nm |
| Holding torque | 9,379 Nm |
| Moment capacity — cantilever (S1) | 11,300 Nm |
| Axial load capacity | 6,804 kg |
| Radial load capacity | 6,804 kg |
| Displacement per cycle | 914.4 cm³ (180°) |
| Unit weight | 56.7 kg (180°) |
| Available mounting styles | RF rear flange |
| This build | E = English/SAE threads & ports · RF rear flange · 180° rotation · S1 single (cantilever) flange · C counterbalance valve · H standard seals & bearings |
180° vs 360° on the same L10-25 base
| Parameter | 360° build | 180° build (this page) |
|---|---|---|
| Catalog code | L10-25-E-RF-360-S1-C-H | L10-25-E-RF-180-S1-C-H |
| Displacement per cycle | 1,828.8 cm³ | 914.4 cm³ (180°) |
| Unit weight | 83 kg | 56.7 kg (180°) |
Same frame and output torque, different displacement, weight, body length and straddle moment — they match different cycle-time, hydraulic-flow and mounting-geometry requirements. Select by the angle your mechanism needs, not by the model number alone.
Send us your nameplate and mounting drawing. HM reviews the configuration and cross-brand options, confirms the fit, then quotes the matching unit and price.
Other models in the Helac L10 range
Showing 8 of 10 other models in this range.
Questions
Frequently asked questions
What does the L10-25-E-RF-180-S1-C-H replace?+
L10-25-E-RF-180-S1-C-H is a 180° Helac L-series helical rotary actuator configuration derived from the Parker/Helac HY34-1001 ordering key and Helac L10 catalog, p. 8. It is assembled per the catalog ordering rules rather than read from a specific nameplate, so the exact configuration and compatibility are confirmed against the original unit tag and mounting drawings; our alternative is matched only after that review. Send your tag code or a drawing and we confirm the exact build before quoting.
Is L10-25-E-RF-180-S1-C-H a confirmed factory order code?+
This configuration is derived from the Parker/Helac HY34-1001 ordering key (L10-25 frame, L10 series, E English/SAE, RF mount, 180° rotation, S1 single/cantilever flange, C counterbalance valve, H standard seals & bearings) and the published L10 performance data. It is a configuration assembled per the catalog rules, not an independently verified factory order code read from a nameplate. The exact configuration and compatibility are confirmed against the original unit tag and mounting drawings before we quote.
What is the difference between the 180° and 360° L10-25 builds?+
They share the same L10 frame and output torque (~2,825 Nm at 207 bar) but are different effective builds: the 360° unit displaces about 1,828.8 cm³ and weighs 83 kg, while the 180° unit displaces about 914.4 cm³ and weighs 56.7 kg. They suit different travel, cycle-time and mounting-geometry requirements, so choose by the required rotation and confirm against the drawing rather than treating them as interchangeable.
Can I use the HKS M-DA-H 100 as a direct replacement?+
The listed alternatives are at a similar published torque level, but each is built to its own frame and mounting dimensions, so a similar rating does not guarantee a fit. Send us your unit tag and mounting drawing — we overlay the flange, shaft, ports and rotation and confirm whether one is a suitable option for your machine.
Which mounting styles are available for the L10-25?+
This page covers the E-RF-180-S1-C-H build. Send your tag code or a mounting drawing and we confirm the matching housing, flange and port arrangement against the available L10 mounting options.
Why is the exact HM model and price not shown?+
We confirm the HM model per inquiry after verifying the interface and operating parameters with you. This avoids shipping a part that looks right by model name but differs in mounting or rotation. Price is provided with that confirmed quote.
Request a replacement review
Need a replacement for L10-25?
Send your existing unit's nameplate and a mounting drawing. HM reviews the configuration and possible alternatives, confirms mounting and compatibility, and recommends the best available sourcing option for your machine.
- Original model / part number
- Machine brand & model
- Quantity & annual demand
- Mounting photo or drawing (if available)
Or email directly: hm@hmhydraulics.com