Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA2025-3
Genuine AirTAC hydraulic shock absorber, order code ACA2025-3 from the ACA20 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- ModelACA2025 (25 mm stroke)
- Speed range3: low speed, heavy load
- CapPlastic cap
- 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 ACA2025-3
The ACA2025-3 is AirTAC's 25 mm stroke version of the ACA20 self-compensating hydraulic shock absorber, ordered with a plastic cap and the type 3 speed range. Type 3 is the low-speed, heavy-load setting: it absorbs impacts up to 1 m/s and stops effective masses up to 1040 kg, drawing on 65 J per cycle and 54,000 J/h of capacity. The M20x1.5 fully threaded body screws into place for easy mounting and adjustment and sheds heat well.
Self-compensation means the resistance adjusts itself to each impact, so no external tuning is needed as the load varies. The hardened stainless steel piston rod resists impact and corrosion, the unit weighs 185 g and runs from -5 to +70 C with side loads kept within 3 degrees. AirTAC recommends working at 20% to 80% of maximum energy and stopping the load 1 mm before the rod bottoms out using the stop nut.
Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA2025-3 Technical Specifications
| Order code | ACA2025-3 |
|---|---|
| Product | Hydraulic Shock Absorber |
| Model | ACA2025 (25 mm stroke) |
| Speed range | 3: low speed, heavy load |
| Cap | Plastic cap |
| 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
Pick ACA2025-3 when your impact arrives below 1 m/s but the mass is heavy, up to 1040 kg at type 3 ratings. If the load moves faster, step up in speed type: ACA2025-2 handles up to 2 m/s (720 kg) and ACA2025-1 up to 4 m/s (660 kg). Within the same type 3 range, this code's plastic cap is the standard choice over the steel-capped ACA2025-3F, or choose the bare ACA2025-3N when the striking surface meets the rod directly. If 25 mm of stroke is more than you need, ACA2020-3 offers 20 mm at 60 J per cycle; if more energy is required, ACA2030-3 reaches 70 J.
Applications
Heavy conveyor end stop
Cushions slow, heavy pallets or fixtures arriving at a conveyor end stop below 1 m/s, where type 3 ratings handle masses up to 1040 kg.
Press and handling fixtures
Absorbs the coast of a heavily loaded slide or arm that creeps into position, with the stop nut turning the stroke end into a positive stop.
Vertical load damping
Takes the final sag of a slowly lowering heavy gantry or lift table, absorbing up to 65 J per cycle inside the recommended 20% to 80% working band.
FAQ
What are the key figures of the ACA2025-3?
The ACA2025-3 has a 25 mm stroke, an M20x1.5 threaded body and a plastic cap. As a type 3 (low speed, heavy load) absorber it takes impacts up to 1 m/s, absorbs up to 65 J per cycle and 54,000 J/h, and stops effective masses up to 1040 kg. It weighs 185 g, operates from -5 to +70 C, and side load must stay within 3 degrees.
How does this code differ from ACA2025-3F and ACA2025-3N?
This code carries the standard plastic cap. Ordering ACA2025-3F substitutes a steel cap suited to heavier impacts, while ACA2025-3N omits the cap entirely so the rod strikes the load directly. All three share the same 25 mm stroke and type 3 performance; confirm cap details from the datasheet.