Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA2020-1F
Genuine AirTAC hydraulic shock absorber, order code ACA2020-1F from the ACA20 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- ModelACA2020 (20 mm stroke)
- Speed range1: high speed, light load
- CapSteel cap (F)
- TypeSelf-compensating, speed type 1/2/3
- Body threadM20×1.5
- ACA202020 mm · 60 J/cycle · 50,000 J/h · max. mass 240 / 660 / 960 kg (type 1/2/3) · 175 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 ACA2020-1F
The F at the end of ACA2020-1F orders a steel cap instead of the standard plastic one, giving the 20 mm stroke and type 1 speed range a strike face suited to heavier impacts. The damping envelope stays at type 1: self-compensating adjustment for fast, light loads up to 4 m/s, 60 J per cycle, 50,000 J/h and a 240 kg effective mass ceiling at this speed type.
Mounting uses the M20x1.5 fully threaded one-piece body, and the stop nut accessory sets the stroke end as a positive stop 1 mm before the rod bottoms out for a long life; a flange is also available. The hardened stainless steel piston rod resists impact and corrosion, the unit runs from -5 to +70 C, and side load must stay within 3 degrees.
Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA2020-1F Technical Specifications
| Order code | ACA2020-1F |
|---|---|
| Product | Hydraulic Shock Absorber |
| Model | ACA2020 (20 mm stroke) |
| Speed range | 1: high speed, light load |
| Cap | Steel cap (F) |
| Type | Self-compensating, speed type 1/2/3 |
|---|---|
| Body thread | M20×1.5 |
| ACA2020 | 20 mm · 60 J/cycle · 50,000 J/h · max. mass 240 / 660 / 960 kg (type 1/2/3) · 175 g |
| ACA2025 | 25 mm · 65 J/cycle · 54,000 J/h · max. mass 260 / 720 / 1040 kg (type 1/2/3) · 185 g |
| ACA2030 | 30 mm · 70 J/cycle · 58,000 J/h · max. mass 280 / 780 / 1120 kg (type 1/2/3) · 210 g |
| ACA2040 | 40 mm · 80 J/cycle · 65,000 J/h · max. mass 320 / 890 / 1280 kg (type 1/2/3) · 225 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
ACA2020-1F is the type 1, 20 mm version ordered with the F cap code, so choose it over the plastic-capped ACA2020-1 when the strike face takes rougher treatment. It keeps the same 60 J per cycle at up to 4 m/s; heavier energy calls for the 25 mm ACA2025-1F or 30 mm ACA2030-1F, while slower loads belong on ACA2020-2 or ACA2020-3. The bare-rod alternative is ACA2020-1N.
Applications
Packaging machine stops
End-of-stroke stops on packaging and wrapping machines, where repeated metal-to-metal strikes justify the steel cap over the plastic one.
Automated line end stops
Production line sliders and fixtures hitting at up to 4 m/s; the self-compensating type 1 damping needs no adjustment as cycle rates change.
Slide and shuttle stops
Horizontal shuttles on M20x1.5 threaded mounting, with the stop nut giving a positive stop 1 mm before the rod bottoms out.
FAQ
What defines the ACA2020-1F specification?
20 mm stroke, speed type 1 for high speed and light loads (up to 4 m/s, 240 kg max effective mass), 60 J per cycle, 50,000 J/h, M20x1.5 fully threaded body, steel cap per the F suffix, 175 g weight, -5 to +70 C, side load 3 degrees or less, hardened stainless steel piston rod.
Can the stop nut really act as a machine stop?
Yes. AirTAC recommends using the stop nut so the stroke end works as a positive stop, holding the load 1 mm before the rod bottoms out for a long life. AirTAC also suggests running 20% to 80% of the 60 J maximum per cycle, and a flange is available as an additional accessory.