Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA3650-1
Genuine AirTAC hydraulic shock absorber, order code ACA3650-1 from the ACA36 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- ModelACA3650 (50 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 ACA3650-1
The AirTAC ACA3650-1 is the 50 mm stroke, speed type 1 version of the ACA36 self-compensating hydraulic shock absorber. Type 1 is set for high impact speeds and light loads, damping impacts up to 4 m/s while absorbing as much as 350 J per cycle and 150000 J per hour on a one-piece body with an M36x1.5 thread.
Because the ACA series adjusts its own resistance to each impact, there is no external setting to maintain as the load changes. AirTAC recommends working inside 20% to 80% of the maximum energy, with an effective mass of up to 1400 kg for type 1. The hardened stainless steel piston rod resists impact and corrosion, the body runs from -5 to +70 C with side loads kept to 3 degrees or less, and the plastic cap, stop nut and flange accessories round out the 889 g package.
Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA3650-1 Technical Specifications
| Order code | ACA3650-1 |
|---|---|
| Product | Hydraulic Shock Absorber |
| Model | ACA3650 (50 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
Stay on ACA3650-1 when the impact is fast but light: it is the 50 mm type rated to 4 m/s, and its 1400 kg type 1 mass limit sits below the 2500 kg of ACA3650-2 and the 5600 kg of ACA3650-3. Choose ACA3650-2 for medium speed lines and ACA3650-3 for slow, heavy loads, or move to ACA3650-1F when the plastic cap should be steel for heavier impacts. If the load rebounds at the start of the stroke, step to a faster type (lower number); if it rebounds at the end, step up. A 25 mm stroke is available as ACA3625-1.
Applications
Conveyor end-of-line stop
Catches cartons or totes arriving at up to 4 m/s at a gate or diverter, where type 1 damping suits light, fast-moving loads.
High-speed slide deceleration
Stops a pneumatic or gantry slide at the end of a fast traverse without hard metal contact, using the threaded M36x1.5 body.
Fixture and pusher cushioning
Absorbs lightweight pusher plates or indexing fixtures inside packaging and assembly machines within the 20% to 80% energy band.
FAQ
What are the key figures of the AirTAC ACA3650-1?
50 mm stroke, M36x1.5 body thread, 350 J per cycle, 150000 J per hour, type 1 damping up to 4 m/s, maximum effective mass 1400 kg, plastic cap, 889 g weight, -5 to +70 C, side load 3 degrees or less.
How should I mount and set it up?
Use the M36x1.5 threaded body for straightforward mounting and good heat dissipation, add the flange accessory if you prefer a face mount, and set the stop nut so the load stops 1 mm before the rod bottoms out. Keep the absorbed energy between 20% and 80% of maximum for long life.