AirTAC ACA12 Hydraulic Shock Absorber, M12 Thread, 10 mm or 15 mm Stroke
Every stocked AirTAC ACA12 shock absorber on one page: 12 order codes from $31.39. Pick the model, speed range and cap to see the exact order code and price.
This combination is not a stock order code. Request a quote and we will confirm availability and price.
- 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 ACA12
The AirTAC ACA12 is a self-compensating hydraulic shock absorber with a M12×1.0 fully threaded body, in 10 mm or 15 mm strokes. The resistance adjusts itself to the impact, and three speed types cover the range: 1 for high speed and light loads, 2 for medium, 3 for low speed and heavy loads. The one-piece body takes high pressure, the threaded body makes mounting and adjustment easy and sheds heat well, and the hardened stainless steel piston rod resists impact and corrosion.
Maximum energy absorption is 10 to 14 J per cycle, at impact speeds up to 4 m/s. It works from -5 to +70 °C; keep side loads within 3°. A stop nut lets the stroke end act as a positive stop, and a flange is available as an accessory.
ACA12 Technical Specifications
| Model | ACA12 |
|---|---|
| Type | Self-compensating, speed type 1/2/3 |
| Body thread | M12×1.0 |
| ACA1210 | 10 mm · 10 J/cycle · 30,000 J/h · max. mass 18 / 60 / 80 kg (type 1/2/3) · 40 g |
| ACA1215 | 15 mm · 14 J/cycle · 35,000 J/h · max. mass 25 / 90 / 115 kg (type 1/2/3) · 48 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 the ACA12 Order Code Is Built
| ACA | Self-compensating shock absorber |
|---|---|
| 12 | Body thread M12×1.0 |
| Stroke | 10 / 15 mm |
| -1 / -2 / -3 | Speed type: high / medium / low |
| blank / N | Cap: plastic cap, no cap (N) |
All AirTAC ACA12 Order Codes (12)
Each order code links to its own datasheet page. Use Select to load it into the configurator above.
| Order code | Model | Speed | Cap | Price | Select |
|---|---|---|---|---|---|
| ACA1210-1 | ACA1210 (10 mm stroke) | 1: high speed, light load | Plastic cap | $31.39 | |
| ACA1210-1N | ACA1210 (10 mm stroke) | 1: high speed, light load | No cap (N) | $31.39 | |
| ACA1210-2 | ACA1210 (10 mm stroke) | 2: medium speed, medium load | Plastic cap | $31.39 | |
| ACA1210-2N | ACA1210 (10 mm stroke) | 2: medium speed, medium load | No cap (N) | $31.39 | |
| ACA1210-3 | ACA1210 (10 mm stroke) | 3: low speed, heavy load | Plastic cap | $31.39 | |
| ACA1210-3N | ACA1210 (10 mm stroke) | 3: low speed, heavy load | No cap (N) | $31.39 | |
| ACA1215-1 | ACA1215 (15 mm stroke) | 1: high speed, light load | Plastic cap | $32.53 | |
| ACA1215-1N | ACA1215 (15 mm stroke) | 1: high speed, light load | No cap (N) | $32.53 | |
| ACA1215-2 | ACA1215 (15 mm stroke) | 2: medium speed, medium load | Plastic cap | $32.53 | |
| ACA1215-2N | ACA1215 (15 mm stroke) | 2: medium speed, medium load | No cap (N) | $32.53 | |
| ACA1215-3 | ACA1215 (15 mm stroke) | 3: low speed, heavy load | Plastic cap | $32.53 | |
| ACA1215-3N | ACA1215 (15 mm stroke) | 3: low speed, heavy load | No cap (N) | $32.53 |
Need a combination that is not listed? Request a quote.
Where the ACA12 Is Used
End-of-stroke cushioning
Stops rodless cylinders, slides and rotary tables smoothly at the end of travel.
Conveyor stops
Absorbs the impact of loads arriving at a stopper.
Higher machine speed
Controlled deceleration allows faster moves with less shock.
Choosing the Right ACA12 Configuration
Choose the model by the energy per cycle and the effective mass to be stopped (see the table): AirTAC recommends using 20% to 80% of the maximum energy. For a long life, stop the load 1 mm before the rod bottoms out, using the stop nut.
Then the speed range: 1 for fast, light loads (up to 4 m/s), 2 for medium (up to 2 m/s), 3 for slow, heavy loads (up to 1 m/s). If the load bounces back at the start of the stroke, choose a faster type (lower number); if it bounces at the end, a slower one.
Finally the cap: plastic cap, no cap (N). N versions have no cap and the rod strikes directly.
AirTAC ACA12 FAQ
Work out the energy per cycle (kinetic energy plus any driving force over the stroke) and the effective mass, then pick a model whose maximum energy is 20-80% used and whose effective mass limit is above yours.
M12×1.0: 8.0 N·m. Do not exceed it.
Plastic cap, no cap (n). Available caps depend on the thread size.
No. You can order a single piece. Orders are processed and handed to the carrier within 3-5 business days.
Buying the ACA12 from AirtacDistr
Genuine AirTAC parts
Every order code on this page is the AirTAC factory part number. Specifications follow the AirTAC Products Catalog 2026A. About us
Ready in 3-5 business days
That is our time to process the order and hand it to the carrier. No minimum order: a single piece can be ordered.
14-day returns, 1-year warranty
Return within 14 days of delivery; the buyer pays return shipping. The warranty covers defects not caused by misuse. Return policy
Engineering help
Send your application details and we will confirm the right order code, usually within 7-8 hours. Ask us
Page data checked against the live catalog on 2026-11-03.
Request a Quote for the ACA12
Send the order code, quantity and destination. We confirm price, stock and lead time, usually within 7-8 hours.