Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA2040-1F
Genuine AirTAC hydraulic shock absorber, order code ACA2040-1F from the ACA20 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- ModelACA2040 (40 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 ACA2040-1F
ACA2040-1F pairs the 40 mm stroke of the AirTAC ACA20 series with a steel cap (option F) on a speed type 1 body, the setting meant for high speed, light load impacts up to 4 m/s. The steel cap gives the rod a tougher strike face for heavier impacts than the standard plastic cap, while the absorber still delivers up to 80 J per cycle and 65000 J/h with masses up to 320 kg in type 1 service.
The self-compensating hydraulic design adapts its resistance to each impact, so no manual adjustment is needed between cycles. The one-piece M20x1.5 fully threaded body handles high pressure and dissipates heat through its threads, and the hardened stainless steel piston rod stands up to repeated strikes and corrosion. Keep the side load angle at 3 degrees or less, and the unit operates from -5 to +70 C.
Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA2040-1F Technical Specifications
| Order code | ACA2040-1F |
|---|---|
| Product | Hydraulic Shock Absorber |
| Model | ACA2040 (40 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
Choose ACA2040-1F rather than the plastic-capped ACA2040-1 when the strike face takes a beating and you want the steel cap of option F, or rather than ACA2040-1N, which ships with no cap and lets the rod strike directly. Compared on stroke, it sits above ACA2030 (30 mm, 70 J per cycle) and ACA2025 (25 mm, 65 J per cycle); compared on speed type, it suits fast loads up to 4 m/s, where -2 tops out at 2 m/s and -3 at 1 m/s.
Applications
Pallet truck and AGV bumpers
The steel cap stands up to repeated hits from fast material-handling vehicles, absorbing up to 80 J per cycle over the 40 mm stroke on light, quick-moving units.
End-of-station machine stops
Stops fast, light fixtures arriving at up to 4 m/s at line stations; the M20x1.5 body plus the available flange accessory fixes the absorber rigidly in place.
Carton pusher cushioning
Absorbs the slam of high-cycle packaging pushers and clamps, with 65000 J/h capacity supporting continuous shifts, and the stop nut providing a positive stroke end.
FAQ
What does the F at the end of ACA2040-1F change?
It replaces the standard plastic cap with a steel cap, the catalog option for heavier impacts on the strike face. Everything else stays type 1: 40 mm stroke, up to 4 m/s, 80 J per cycle, 65000 J/h, 320 kg maximum mass in type 1 service, M20x1.5 body thread and 225 g weight.
How should I size and mount this unit?
Match the energy per cycle and effective mass to the table, staying within 20 to 80 percent of the 80 J maximum, then set the stop nut so the load stops 1 mm before the rod bottoms out for long life. Keep side load within 3 degrees; a stop nut and flange are the listed accessories.