Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA3625-1F
Genuine AirTAC hydraulic shock absorber, order code ACA3625-1F from the ACA36 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- ModelACA3625 (25 mm stroke)
- Speed range1: high speed, light load
- CapSteel cap (F)
- TypeSelf-compensating, speed type 1/2/3
- Body threadM36×1.5
- ACA362525 mm · 220 J/cycle · 135,000 J/h · max. mass 880 / 2400 / 3500 kg (type 1/2/3) · 702 g
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA3625-1F
Within the ACA3625 line, the F suffix specifies the steel cap option, the version offered for heavier impacts on the cap face. As a type 1 unit it is tuned for high speed, light loads: impact speeds up to 4 m/s, 220 J absorbed per cycle and 135,000 J per hour, with a maximum effective mass of 880 kg. The one-piece M36x1.5 threaded body dissipates heat well, and the hardened stainless steel piston rod stands up to repeated impact and corrosion.
Resistance self-compensates, so the 25 mm stroke absorbs varying loads with no manual setting. The 702 g absorber runs from -5 to +70 C with side loads held to 3 degrees or less, and the stop nut doubles as a positive stop positioned 1 mm before rod bottom-out. Keep absorbed energy between 20% and 80% of maximum to maximise service life.
Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA3625-1F Technical Specifications
| Order code | ACA3625-1F |
|---|---|
| Product | Hydraulic Shock Absorber |
| Model | ACA3625 (25 mm stroke) |
| Speed range | 1: high speed, light load |
| Cap | Steel cap (F) |
| Type | Self-compensating, speed type 1/2/3 |
|---|---|
| Body thread | M36×1.5 |
| ACA3625 | 25 mm · 220 J/cycle · 135,000 J/h · max. mass 880 / 2400 / 3500 kg (type 1/2/3) · 702 g |
| ACA3650 | 50 mm · 350 J/cycle · 150,000 J/h · max. mass 1400 / 2500 / 5600 kg (type 1/2/3) · 889 g |
| Max impact speed | 4 m/s (type 1), 2 m/s (2), 1 m/s (3) |
| Temperature | -5 to +70 °C |
| Side load angle | 3° or less |
| Piston rod | Hardened stainless steel |
| Accessories | Stop nut, flange |
Source: AirTAC Products Catalog 2026A (PDF01-P0779..P0783), ACA/ACJ series specifications, ordering code and usage notes.
How to choose
Choose ACA3625-1F over the plastic-cap ACA3625-1 when the cap itself takes heavier, more frequent blows; the F option swaps the cap to steel while keeping the same 220 J, 4 m/s type 1 performance. If your load is slower or heavier, move to ACA3625-2 (up to 2 m/s, 2400 kg) or ACA3625-3 (up to 1 m/s, 3500 kg). Where 220 J per cycle falls short, the 50 mm stroke ACA3650 lifts capacity to 350 J.
Applications
Clamp and die edge cushioning
The steel cap absorbs repeated blows from fast clamps, tooling plates or die slides arriving at up to 4 m/s in automated cells.
High-cycle line stop
Ends a fast conveyor run where carriers strike the cap constantly, with the steel cap suiting duty up to 135,000 J per hour.
Fixture mounting with flange
Integrates into machine fixtures using the optional flange on the M36x1.5 body, while the stop nut gives a precise mechanical end stop.
FAQ
What are the key figures for the ACA3625-1F?
Stroke 25 mm, body thread M36x1.5, speed type 1 rated to 4 m/s, 220 J per cycle, 135,000 J per hour, maximum effective mass 880 kg, steel cap (F), weight 702 g, temperature -5 to +70 C, side load 3 degrees or less, hardened stainless steel piston rod.
What does the F in ACA3625-1F change?
The F option replaces the standard plastic cap with a steel cap intended for heavier impacts; nothing else in the specification changes. Setup guidance stays the same: absorb 20% to 80% of the 220 J maximum, stop the load 1 mm before rod bottom-out with the stop nut, and keep side loads within 3 degrees.