ECKART SOURCING
ECKART SZ SM3.170-357°/SO Rotary Actuator
The ECKART SZ SM3.170-357°/SO is a helical hydraulic rotary actuator (about 357-degree rotation) listed by Sandvik under OEM part number BG00334337 (also written BG00-334-337) in the supplier cross-reference list. HM provides sourcing and alternative-supply support for this reference. We do not assume the offered unit is an original ECKART part or a pre-verified interchangeable unit; the model, mounting dimensions and configuration are confirmed against your actuator nameplate and drawing before we quote.
Sandvik part number
BG00334337
Sourcing / alternative supply for ECKART SZ SM3.170-357°/SO. Interchangeability confirmed on inquiry.
Specifying a new program? Talk to our engineering team →
Independently sourced / alternative-supply service — not represented as an original ECKART or Sandvik part. Interchangeability is verified against your unit and drawing before ordering.
What the 357° sweep changes on this build
A non-standard sweep: 357° sits outside the usual 180° / 360° range, which means the stop tube was cut for that angle. A standard-angle unit will not reproduce it, and the stop positions have to be read off the drawing rather than assumed.
- 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
- ECKART SZ SM3.170-357°/SO
- Original brand
- ECKART
- Type
- Rotary actuator
- Rotation
- 357°
- Weight
- 255 kg
- Original part no.
- BG00334337
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 | 357° |
| Unit weight | 255 kg |
| Cross reference | ECKART is the original actuator brand; Sandvik lists this unit as BG00334337. HM offers a sourcing / alternative-supply route. Because interchangeability has not been independently verified, the drawing, mounting dimensions, shaft and ports and the exact configuration are checked against your unit 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 ECKART SM3 range
Questions
Frequently asked questions
What does the ECKART SZ SM3.170-357°/SO replace?+
It is the original ECKART model code for a helical hydraulic rotary actuator providing 357° rotation. HM provides sourcing and alternative-supply support for this reference; it is not assumed to be an original ECKART 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 Sandvik under part number BG00334337. 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 DD321. 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.
Is Sandvik BG00334337 an ECKART actuator?+
Our supplier cross-reference list maps Sandvik OEM number BG00334337 to the original ECKART actuator model SZ SM3.170-357°/SO. HM can source or arrange alternative supply; we do not represent the offered unit as an original ECKART part or guarantee interchangeability until the configuration and mounting are checked against your unit and drawing.
Can HM supply a direct, fully compatible replacement for BG00334337?+
We do not claim a verified drop-in or a guaranteed-compatible unit from the part number alone. Send the actuator nameplate and a mounting drawing; we confirm rotation, mounting interface, shaft and ports and then advise the available sourcing or alternative-supply option.
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 ECKART SZ SM3.170-357°/SO?
Send the original ECKART 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