Replacement model guide
ACE Controls MA3325M replacement option: EK33x25 comparison
Compare published ACE Controls MA3325M ratings with the EKD EK33x25 candidate and confirm the actual application conditions.
Browse ACE Controls MA / MA-M modelsCandidate requires mounting changes or dimensional review Final selection requires operating data and a drawing review.
Metric-model source reconciled
The earlier record used 214.7 J. The current ACE Controls US page reports 1500 in-lbf/cycle, approximately 169.477 J/cycle. The 2018 catalog summary (printed page 15) and detailed table (page 77) disagree. This comparison now uses the current exact metric-suffix model page. A higher candidate energy rating does not establish equivalent damping, mounting compatibility or an approved replacement.
Checked 2026-10-05. Current model webpage; revision date not supplied. Conversion: 1 in-lbf = 0.112984829 J.
Published parameter comparison
The table compares published catalog values. A higher rating can identify a performance candidate, but it does not remove mounting, force, reset, environment or application checks.
| Parameter | ACE Controls MA3325M | EKD EK33x25 | Assessment |
|---|---|---|---|
| Energy per cycle | 1500 in-lbf/cycle ≈ 169.477 J/cycle | 215 Nm/C | Different — confirm Exact metric-suffix source reconciled 2026-10-05. The 2018 catalog summary (printed p. 15) differs from its detailed table (p. 77). Compare the current reported rating; a higher candidate rating does not establish equivalent damping or interchangeability. |
| Energy per hour | 75,700 J/h | 75,700 Nm/h | Matched reported value Confirm the actual cycle rate and thermal conditions. |
| Stroke | 23.2 mm | 25 mm | Different — confirm Confirm usable travel, stop position and reset clearance. |
| Body thread | M33 x 1.5 | M33 x 1.5 | Matched reported value Nominal body-thread designation matches; verify thread tolerance, mounting geometry and available envelope before ordering. |
| Nominal total length | 138 mm | 150 mm | Different — confirm Check the drawing reference points, installed envelope and rod-end geometry. |
| Impact velocity | MA range: 0.15–5.03 m/s | 0.3–3.3 m/s | Inquiry confirmation required Compare the real operating point, not only the published maximum. |
What must be matched and confirmed
- Actual moving mass, impact velocity and drive force
- Mounting thread, stop geometry and available envelope
- Cycle rate, return time and permissible deceleration
- Temperature, corrosion, alignment and side loading
Continue with EKD review
Open the EKD candidate, then use the matching tool or send the original nameplate, drawing and application data. EKD will confirm the remaining differences before ordering.
Sources and boundary
Original product source: https://www.acecontrols.com/us/products/automation-control/industrial-shock-absorbers/ma-ml33-to-ma-ml64/ma-ml33m/ma3325m.html
EKD candidate source: https://www.vibroabsorber.com/products/shock-absorbers/ek-adjustable-shock-absorbers/ek33x25
Brand names and model numbers identify the user's existing product for comparison. EKD does not claim the original brand's certification, design ownership or guaranteed interchangeability. Final selection requires application confirmation.