HELAC SOURCING
L40-110-M-FT-220/185-S1-C-H Rotary Actuator
The L40-110-M-FT-220/185-S1-C-H is a heavy-duty foot-mount (FT) helical rotary actuator in the Helac L40-110 class, rated at 3000 psi (about 207 bar), built in 220-degree and 185-degree mining rotation angles and recorded on the RESEMIN Troidon 66 long-hole drill rig. The reference nameplate for that installation reads L40-110-M-FT-220-S1-C-H; the model family is documented with both 220 and 185-degree angles. It is identified by the actuator model code rather than a separate machine part number. HM provides technical selection and sourcing / alternative-supply support and confirms the rotation angle, foot mounting, ports and shaft against your nameplate and drawing before quotation; we do not promise stock or a pre-verified interchangeable unit from the code alone.
Helac L40 series helical rotary actuator
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Independently sourced / alternative-supply service — not represented as an original Helac or RESEMIN part. Interchangeability is verified against your unit and drawing before ordering.
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.
L40-110-M-FT-220/185-S1-C-H
L40 series
| Segment | Field | What it tells you |
|---|---|---|
| L40 | Series | L40 series — frame size and mounting family |
| 110 | Model size | Size 110 — rated drive torque is set by this number (thousand in-lb class in the L/T key) |
| M | Measurement system | Metric system — metric threads, BSPP ports |
| FT | Housing / mounting | Foot mount |
| 220/185 | Rotation | Special rotation — 220° base / 185° final, set by an internal stop tube in 10° steps |
| 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 220° / 185° sweep changes on this build
This reference is listed with more than one sweep. The sweep is part of the build identity, so the unit on the machine has to be identified by its own setting before anything is matched.
- Read the stop positions off the mounting drawing before ordering — do not infer them from the code alone.
- Ask why the original used this sweep; a non-standard angle usually answers a linkage constraint that a standard unit will not fit.
- Confirm the sweep on the unit tag matches the code, since special builds are sometimes re-stopped in service.
When this sweep is the right build
- Linkages whose geometry was designed around this exact sweep — the stop positions usually answer a clearance or interference constraint.
- Rebuild work where the surrounding mechanism has to stay unchanged, so the sweep cannot be normalised to 180° or 360°.
- OEM builds where the sweep was specified by the machine maker rather than chosen from a catalogue.
Confirming the sweep on the machine
- Measure the swing between the mechanical end stops on the machine, not between the positions the linkage happens to use.
- Compare the measured swing with the code on the tag; special builds are sometimes re-stopped in service.
How the sweep sits in the order code
The sweep is the fifth segment of the code, and here it carries a value outside the standard range. That value is a build instruction, not a selection from a list: it has to travel with the enquiry together with the stop positions, because the stop tube is cut for it.
Where these two builds get mixed up
- A full-turn unit is sometimes quoted where the linkage only swings half a turn, which over-travels the hose loop for no benefit.
- If a full-turn unit will not pass a quarter or half turn under load, the cause is usually hose routing or an external stop, not the actuator.
We do not publish a conversion table between sweeps. If the sweep on your unit differs from the code above, send the tag and the mounting drawing and the build is confirmed against them.
At a glance
Quick reference
- Original model
- L40-110-M-FT-220/185-S1-C-H
- Original brand
- Helac
- Type
- Rotary actuator
- Rotation
- 220° / 185°
- Rated pressure
- 3000 psi (207 bar)
- Mounting
- FT foot mount
Equipment reference
Known applications
Based on equipment records, this actuator is associated with the following machines. Confirmation against your machine build plate is recommended.
If your machine is not listed, send the full model and serial number — other builds may use the same actuator.
Confirmed data only
Technical specifications
| Product type | Hydraulic rotary actuator |
|---|---|
| Rotation angle | 220° / 185° |
| Rated operating pressure | 207 bar |
| Available mounting styles | FT foot mount |
| Cross reference | This is a model-code sourcing entry for an L40-110 class foot-mount unit offered in 220/185-degree rotations, confirmed fitted to a RESEMIN Troidon 66 rig; no machine cross-reference number is published. The 220-degree and 185-degree builds differ in end-stop geometry and are not interchangeable, and FT mounting differs from the RL/RF build; the exact angle and mount are checked against your nameplate before any alternative is recommended. |
| Further data | Torque, pressure, port and mounting dimensions are shared with the engineering drawing on request. |
HM alternative model — confirmed on inquiry. Send us your original model number, part number or machine details and we confirm the matching configuration, specifications and compatibility, then quote. The exact ordering code — rotation, output and valve arrangement — is confirmed against your unit and is not published online.
Other models in the Helac L40 range
Questions
Frequently asked questions
What does the L40-110-M-FT-220/185-S1-C-H replace?+
It is the original Helac model code for a helical hydraulic rotary actuator providing 220° / 185° rotation. HM provides sourcing and alternative-supply support for this reference; it is not assumed to be an original Helac part or a pre-verified interchangeable unit, and the configuration is confirmed against your actuator nameplate and drawing before we quote. It is listed by RESEMIN. HM can source or arrange alternative supply for this reference; mounting dimensions, shaft, ports and the exact configuration are checked against your unit and drawing before any alternative is recommended.
How do I know this fits my machine?+
The same actuator is recorded on the RESEMIN Troidon 66. Before quoting we confirm the mounting face, port position and rotation against the tag and a photo of your unit, so the replacement matches your exact build.
What do the 220 and 185 in L40-110-M-FT-220/185 mean?+
They are the two available rotation angles (220 degrees and 185 degrees) for this foot-mount L40-110 build. The angle changes the end-stop geometry, so the two units are not interchangeable; read the rotation from your actuator tag before ordering. The reference Troidon 66 nameplate carries the 220-degree code.
Which RESEMIN machine uses the L40-110-M-FT-220?+
A reference nameplate coded L40-110-M-FT-220-S1-C-H was confirmed on a RESEMIN Troidon 66 long-hole production drill rig. Machine fitment still varies with the rig serial and option build, so send your actuator nameplate and mounting drawing for confirmation before quoting.
Is there an OEM part number, and can HM supply this RESEMIN unit?+
No separate machine OEM part number is published in the available reference; the unit is identified by the model code L40-110-M-FT-220/185-S1-C-H. We offer selection and sourcing / alternative-supply support; send the nameplate and mounting drawing and we confirm the rotation, foot-mount interface, shaft and ports before quoting.
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 sourcing
Need a source for L40-110-M-FT-220/185-S1-C-H?
Send the original Helac model number, the RESEMIN / OEM part number, machine details or a mounting drawing. We confirm the configuration and advise the available sourcing or alternative-supply option before quoting.
- Original model / part number
- Machine brand & model
- Quantity & annual demand
- Mounting photo or drawing (if available)
Or email directly: hm@hmhydraulics.com