Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA2025-2
Genuine AirTAC hydraulic shock absorber, order code ACA2025-2 from the ACA20 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- ModelACA2025 (25 mm stroke)
- Speed range2: medium speed, medium 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 ACA2025-2
As the 25 mm stroke, speed type 2 member of the AirTAC ACA series, the ACA2025-2 carries a plastic cap on an M20x1.5 fully threaded body. Speed type 2 is the medium band of the range: it absorbs up to 65 J per cycle and 54000 J per hour on effective masses up to 720 kg, at impact speeds up to 2 m/s.
Self-compensation means the deceleration force adjusts itself to each impact, so no manual retuning is needed as the load varies. AirTAC recommends running between 20% and 80% of the maximum energy per cycle for best life, and using the stop nut accessory so the load stops 1 mm before the rod bottoms out. The hardened stainless steel piston rod resists impact and corrosion, the unit operates from -5 to +70 C, and side load must stay within 3 degrees.
Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA2025-2 Technical Specifications
| Order code | ACA2025-2 |
|---|---|
| Product | Hydraulic Shock Absorber |
| Model | ACA2025 (25 mm stroke) |
| Speed range | 2: medium speed, medium 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
Stay with ACA2025-2 while your load sits inside 65 J per cycle and a 720 kg type 2 effective mass; step down to ACA2020-2 (60 J, 660 kg) or up to ACA2030-2 (70 J, 780 kg) or ACA2040-2 (80 J, 890 kg) as the numbers demand. If impacts run above 2 m/s, the faster ACA2025-1 is the correct speed type; below 1 m/s with heavy loads, move to ACA2025-3. On cap choice, ACA2025-2F adds a steel cap for heavier impacts and ACA2025-2N removes the cap so the rod is struck directly.
Applications
Conveyor end stops
Mounted at the end of a conveyor line, it takes medium-speed cartons and pallets arriving at up to 2 m/s, with the M20x1.5 threaded body and flange accessory simplifying alignment.
Pick-and-place deceleration
Fitted at the travel end of a pick-and-place or gantry axis, the 25 mm stroke cushions medium-speed, medium-mass slides without retuning as cycle loads change.
Sliding fixture damping
On machine fixtures, drawers and tool slides that arrive at moderate speed, the plastic-capped face protects the mating stop while absorbing up to 65 J per cycle.
FAQ
What are the key specifications of the ACA2025-2?
25 mm stroke with plastic cap; 65 J per cycle and 54000 J per hour absorption; effective mass up to 720 kg for speed type 2; impact speed up to 2 m/s; M20x1.5 body thread; 185 g weight; operating range -5 to +70 C; side load 3 degrees or less.
When should I pick the plastic cap instead of the F or N version?
The plastic cap on the ACA2025-2 suits general impacts that stay within the 65 J per cycle rating and benefit from a resilient face. Choose ACA2025-2F when the blow is heavier and needs a steel cap, or ACA2025-2N when no cap is wanted and the rod is struck directly.