Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA3650-1F
Genuine AirTAC hydraulic shock absorber, order code ACA3650-1F 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
- 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 ACA3650-1F
The AirTAC ACA3650-1F is the steel cap variant of the ACA36 shock absorber in the 50 mm stroke, speed type 1 setting. The F suffix in the order code swaps the standard plastic cap for a steel cap intended for heavier impacts, while the damping stays tuned for high speed work at up to 4 m/s.
The cap choice does not change the performance figures: up to 350 J per cycle and 150000 J per hour, an effective mass limit of 1400 kg for type 1, and a hardened stainless steel piston rod inside a one-piece M36x1.5 body that mounts easily and sheds heat well. It operates from -5 to +70 C, tolerates side loads up to 3 degrees, weighs 889 g, and the stop nut and flange are available as accessories.
Airtac ACA Standard Automatic Compensation Hydraulic Shock Absorber ACA3650-1F Technical Specifications
| Order code | ACA3650-1F |
|---|---|
| Product | Hydraulic Shock Absorber |
| Model | ACA3650 (50 mm stroke) |
| Speed range | 1: high speed, light 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
Decide between ACA3650-1 (plastic cap) and ACA3650-1F (steel cap) purely by the striking face: order the F code when impacts are heavier or more punishing on the cap. Against its speed-type siblings, this code covers fast, light loads, while ACA3650-2 takes up to 2 m/s and 2500 kg and ACA3650-3 takes up to 1 m/s and 5600 kg. Rebound at the start of the stroke calls for a lower type number; rebound at the end, a higher one. The 25 mm stroke equivalent is ACA3625-1.
Applications
Machine stations with heavy strikes
Suits stations where the cap sees heavier or repeated impacts and a steel cap is preferred over the plastic cap of ACA3650-1.
Fast conveyor catch
Decelerates products or carriers at line speeds up to 4 m/s at a transfer gate, keeping energy per cycle within 350 J.
Machine rebuilds and retrofits
Replaces worn high-speed absorbers on existing M36x1.5 threaded mounts, with the stop nut providing a positive stop 1 mm before bottom-out.
FAQ
What are the key figures of the AirTAC ACA3650-1F?
50 mm stroke, M36x1.5 body, steel cap (F), 350 J per cycle, 150000 J per hour, type 1 damping up to 4 m/s, maximum effective mass 1400 kg, 889 g, -5 to +70 C, side load 3 degrees or less.
When is the F steel cap worth ordering?
Order ACA3650-1F instead of ACA3650-1 when the impact face is heavier or harsher on the cap; the energy and speed figures are the same for both caps. Either way, size the application inside 20% to 80% of the maximum energy and use the stop nut to halt the load 1 mm before the rod bottoms out.