Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA3625-2F
Genuine AirTAC hydraulic shock absorber, order code ACA3625-2F from the ACA36 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- ModelACA3625 (25 mm stroke)
- Speed range2: medium speed, medium load
- CapSteel cap (F)
- TypeSelf-compensating, speed type 1/2/3
- Body threadM36×1.5
- ACA362525 mm · 220 J/cycle · 135,000 J/h · max. mass 880 / 2400 / 3500 kg (type 1/2/3) · 702 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 ACA3625-2F
The ACA3625-2F is the medium-speed, steel-cap version of the AirTAC ACA3625 self-compensating hydraulic shock absorber. Its 25 mm stroke in a fully threaded M36x1.5 body absorbs up to 220 J per cycle and 135,000 J per hour, and the speed type 2 setting accepts impact velocities up to 2 m/s with effective masses up to 2400 kg. Because the resistance self-adjusts to each impact, no external tuning is needed when load conditions vary between cycles.
The F option swaps the standard plastic cap for a steel cap, so the contact face stands up to heavier repeated impacts than the plain ACA3625-2. Inside, a hardened stainless steel piston rod resists both impact wear and corrosion, the one-piece body sheds heat well, and the unit weighs 702 g. It operates from -5 to +70 C with side loads kept to 3 degrees or less, and a stop nut plus flange are available as accessories.
Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA3625-2F Technical Specifications
| Order code | ACA3625-2F |
|---|---|
| Product | Hydraulic Shock Absorber |
| Model | ACA3625 (25 mm stroke) |
| Speed range | 2: medium speed, medium load |
| Cap | Steel cap (F) |
| Type | Self-compensating, speed type 1/2/3 |
|---|---|
| Body thread | M36×1.5 |
| ACA3625 | 25 mm · 220 J/cycle · 135,000 J/h · max. mass 880 / 2400 / 3500 kg (type 1/2/3) · 702 g |
| ACA3650 | 50 mm · 350 J/cycle · 150,000 J/h · max. mass 1400 / 2500 / 5600 kg (type 1/2/3) · 889 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 the -2F suffix when your impacts arrive at medium speed: type 2 covers up to 2 m/s and masses up to 2400 kg, between type 1 (fast, light loads to 4 m/s and 880 kg) and type 3 (slow, heavy loads to 1 m/s and 3500 kg). If the load bounces back at the start of the stroke, step down to a faster type such as ACA3625-1; if it bounces near the end, step up to ACA3625-3. The F steel cap is the right call over the plastic cap when the striking surface hits hard every cycle. If your energy per cycle rises toward 350 J, move to the 50 mm stroke ACA3650 series instead.
Applications
Conveyor end-of-line stops
A stop nut lets the ACA3625-2F double as a positive stop, and type 2 damping suits cartons or pallets arriving at moderate conveyor speeds up to 2 m/s, with AirTAC recommending 20% to 80% of the 220 J maximum for long life.
AGV and forklift docking buffers
Medium-speed vehicles docking at variable approach velocities suit the self-compensating type 2 characteristic, with effective masses up to 2400 kg and the steel cap taking the repeated dock impact.
Machine slide deceleration
The threaded M36x1.5 body mounts and adjusts easily on machine frames, absorbing slide energy per cycle within the 20% to 80% window of 220 J while stopping the load 1 mm before bottom-out via the stop nut.
FAQ
What are the key specifications of the ACA3625-2F?
ACA3625 model with 25 mm stroke, speed type 2 (medium, up to 2 m/s), steel cap (F). Maximum energy absorption is 220 J per cycle and 135,000 J per hour, maximum effective mass 2400 kg for type 2, body thread M36x1.5, weight 702 g, temperature range -5 to +70 C, side load angle 3 degrees or less.
How should I position and maintain the ACA3625-2F for long service life?
Choose the model so your energy per cycle sits between 20% and 80% of the 220 J maximum, set the stop nut so the load stops 1 mm before the rod bottoms out, keep side loads within 3 degrees, and mount via the M36x1.5 thread or the optional flange accessory.