HELAC ALTERNATIVE
L10-5.5-E-RF-360-S1-O-H Rotary Actuator
Alternative rotary actuator for the Helac L10-5.5-E-RF-360-S1-O-H, a continuous 360-degree helical actuator listed by Atlas under part number 3128309281, in the 21 kg class.
Atlas part number
3128309281
Alternative rotary actuator for Helac L10-5.5-E-RF-360-S1-O-H.
Independently supplied alternative — not an original Helac or Atlas, Sandvik part. Compatibility is verified before ordering.
At a glance
Quick reference
- Original model
- L10-5.5-E-RF-360-S1-O-H
- Original brand
- Helac
- Type
- Rotary actuator
- Rotation
- 360°
- Weight
- 21 kg
- Original part no.
- 3128309281
Equipment reference
Known applications
Based on equipment records, this actuator is associated with the following Atlas Boltec drill rigs. 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 | 360° |
| Unit weight | 21 kg |
| 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 L10-5.5-E-RF-360-S1-O-H replace?+
It is the model code for a Helac helical rotary actuator providing 360° rotation in the 21 kg class. It is listed by Atlas, Sandvik under part number 3128309281. Our alternative is matched to the same rotation, 21 kg class and mounting interface.
How do I know this fits my machine?+
The same actuator is recorded on the Boltec 235, Boltec 235h, Boltec Lc, Boltec Md. 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.
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 check
Looking for an alternative to this model?
Send us the original model number, part number, machine model or a drawing. We check the available option and confirm specifications and compatibility for you.
- Original model / part number
- Machine brand & model
- Quantity & annual demand
- Mounting photo or drawing (if available)
Or email directly: hm@hmhydraulics.com