Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA3625-1
Genuine AirTAC hydraulic shock absorber, order code ACA3625-1 from the ACA36 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- ModelACA3625 (25 mm stroke)
- Speed range1: high speed, light load
- CapPlastic cap
- 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 ACA3625-1
As speed type 1 in the AirTAC ACA3625 range, the -1 suffix tunes this absorber for high speed, light loads: impacts up to 4 m/s, an effective mass up to 880 kg, and 220 J absorbed per cycle at up to 135,000 J per hour. Resistance self-compensates inside the one-piece M36x1.5 threaded body, which mounts and adjusts easily and sheds heat well, while the hardened stainless steel piston rod resists both impact and corrosion.
The plastic cap keeps the unit at 702 g, and the 25 mm stroke suits compact machine frames. Operation spans -5 to +70 C with side loads kept to 3 degrees or less. AirTAC recommends absorbing 20% to 80% of the 220 J maximum, and using the stop nut so the load is stopped 1 mm before the rod bottoms out for a long service life.
Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA3625-1 Technical Specifications
| Order code | ACA3625-1 |
|---|---|
| Product | Hydraulic Shock Absorber |
| Model | ACA3625 (25 mm stroke) |
| Speed range | 1: high speed, light load |
| Cap | Plastic cap |
| 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 ACA3625-1 when your load arrives fast and light: up to 4 m/s and roughly 880 kg effective mass. If the impact is slower or heavier, step to ACA3625-2 (medium speed, up to 2 m/s, 2400 kg) or ACA3625-3 (low speed, up to 1 m/s, 3500 kg). Within type 1 itself, choose this plastic-cap version for normal duty or ACA3625-1F when the cap face must survive heavier repeated blows. If 220 J per cycle is not enough, the 50 mm stroke ACA3650 raises capacity to 350 J.
Applications
Conveyor end stop
Damps fast product carriers or pusher plates arriving at up to 4 m/s at a line end, absorbing up to 220 J per cycle without manual rebound tuning.
Pick-and-place deceleration
Cushions the quick return strokes of light pneumatic arms and slides where the type 1 profile and 880 kg mass ceiling match the duty.
Linear slide cushioning
Adds a self-compensating stop to belt-driven linear units, with the stop nut providing a positive end position 1 mm before rod bottom-out.
FAQ
What are the key figures for the ACA3625-1?
Stroke 25 mm, body thread M36x1.5, speed type 1 rated to 4 m/s, 220 J per cycle, 135,000 J per hour, maximum effective mass 880 kg, weight 702 g, temperature -5 to +70 C, side load 3 degrees or less, plastic cap, hardened stainless steel piston rod.
How do I set it up for the longest life?
Absorb 20% to 80% of the 220 J maximum, and stop the load 1 mm before the rod bottoms out using the stop nut. If the load bounces at the start of the stroke, choose a faster type (lower number); if it bounces at the end, a slower one. A flange is available as an accessory for the M36x1.5 body.