HKS SOURCING
DA-H 125 / I-DA-H 125 Rotary Actuator
The HKS DA-H 125 and I-DA-H 125 are helical hydraulic rotary actuators in HKS's large-bore programme, rated at about 5,100 Nm output torque at 210 bar. The number 125 is an HKS bore/housing size designation, not a torque figure and not another maker's size number. In HM's controlled cross-reference this reference sits in the 5,100 Nm class, matched to HM's own HMR1-500 build. HM Hydraulics supplies an alternative unit from that HM build and supports the selection work around it; we do not hold the HKS unit as a stocked SKU and do not promise stock, lead time or confirmed availability. Rotation, mounting interface, shaft and port arrangement are checked against your nameplate and drawing before any quotation.
HKS DA-H / I-DA-H (5,100 Nm class) series helical rotary actuator
Specifying a new program? Talk to our engineering team →
Independently sourced / alternative-supply service — not represented as an original HKS part. Interchangeability is verified against your unit and drawing before ordering.
HM equivalent
HMR1-500 — the same 5,100 Nm torque class
This reference sits in the 5,100 Nm class. The closest HM model is HMR1-500 — Helical, HKS-style flanged — in the same torque class. The table shows what carries over and what still has to be checked on your unit.
Original
DA-H 125 / I-DA-H 125
HM equivalent
HMR1-500
Rated torque
Rated pressure
Rotation
Mounting
Output shaft
Valve options
| Original DA-H 125 / I-DA-H 125 | HM HMR1-500 | |
|---|---|---|
| Rated driving torque | 5,100 Nm * | 5,100 Nm |
| Rated pressure | 210 bar * | 210 bar |
| Rotation | 90° / 180° / 270° / 360° | 90° / 180° / 270° / 360° |
| Mounting | Per original build — confirm on unit | FL — Flange (standard) |
| Output shaft | Per original build — confirm on unit | KS — Keyed solid shaft / SS — Splined solid shaft / KB — Keyed hollow shaft / BS — Bolted flange shaft |
| Valve options | Per original build — confirm on unit | NV / CB / CS |
| Ordering pattern | — | HMR1-{spec}-{angle}-{output}-{valve} |
* Original-side figures are the manufacturer's catalogue values for this torque class. Confirm against the unit nameplate before ordering.
What carries over
- Torque class and rated pressure (210 bar).
- Helical, HKS-style flanged architecture.
- Rotation: 90/180/270/360° available on the HMR1 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.
At a glance
Quick reference
- Original model
- DA-H 125 / I-DA-H 125
- Original brand
- HKS
- Type
- Rotary actuator
- Rotation
- 90° / 180° / 270° / 360°
- Rated torque
- 5100 Nm
- Weight
- Per original build
Confirmed data only
Technical specifications
| Product type | Hydraulic rotary actuator |
|---|---|
| Rotation angle | 90° / 180° / 270° / 360° |
| Rated torque | 5100 Nm |
| Unit weight | Per original build |
| Cross reference | References below are engineering cross-references by torque class from HM's controlled multi-brand database; they are not validated substitutions. Same torque class (comparable rated output; independent housing and mounting designs - do not assume matching dimensions): HM HMR1-500 (5,100 Nm). HM has no supply-verified interchange record for this pairing, so the highest claim we make is 'same torque class / comparable'; nothing is presented as a verified interchangeable unit. |
| 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 HM model is not published online.
Questions
Frequently asked questions
What does the DA-H 125 / I-DA-H 125 replace?+
It is the original HKS model code for a helical hydraulic rotary actuator providing 90° / 180° / 270° / 360° rotation. HM provides sourcing and alternative-supply support for this reference; it is not assumed to be an original HKS part or a pre-verified interchangeable unit, and the configuration is confirmed against your actuator nameplate and drawing before we quote. 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.
Can HM supply the HKS DA-H 125 or I-DA-H 125?+
HM supplies an alternative unit from its own HMR1-500 build, which sits in the same 5,100 Nm torque class at 210 bar. We do not keep the HKS unit in stock and do not promise availability or lead time. The exact HKS configuration — rotation, mounting, shaft and port arrangement — is confirmed against your nameplate and, where needed, a mounting drawing before we quote.
What is the difference between the DA-H and I-DA-H prefixes?+
Both are the same bore size in HKS's large-bore programme, offered as two housing/interface variants. The torque class is the same. Which one you have on the machine is read from the nameplate, and it matters for the mounting and shaft interface rather than for the torque rating.
Is the HMR1-500 a drop-in replacement for the HKS DA-H 125?+
No. They sit in the same torque class in our cross-reference, but the housing, mounting bolt pattern, shaft and port arrangement are designed independently. We confirm each of those against your unit before quoting, and we do not claim a verified drop-in fit from the model number alone.
What information does HM need before quoting this actuator?+
Send the nameplate (brand, full model code, rotation, mounting, shaft and port details) and a mounting drawing or photo if you have one. We then confirm the configuration and advise the alternative-supply option, including what has to be adapted on the interface.
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 DA-H 125 / I-DA-H 125?
Send the original HKS model number, the Sandvik / 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