
Genuine AirTAC hydraulic shock absorber, order code ACA2030-3F from the ACA20 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
The ACA2030-3F pairs AirTAC's self-compensating ACA shock absorber with a steel cap on the striking end. The F suffix in the ordering code signals exactly this: a steel cap chosen for heavier impacts. Underneath sits a 30 mm stroke, an M20x1.5 fully threaded one-piece body, and a type 3 speed rating for low speed, heavy load duties - up to 70 J per cycle, 58000 J/h, and 1120 kg effective mass at 1 m/s or below.
Self-compensation means the resistance adjusts itself to each impact, so no external adjustment is needed as load varies. The hardened stainless steel piston rod takes the punishment, the threaded body aids mounting and heat dissipation, and operation spans -5 to +70 C with side loads within 3 degrees.
| Order code | ACA2030-3F |
|---|---|
| Product | Hydraulic Shock Absorber |
| Model | ACA2030 (30 mm stroke) |
| Speed range | 3: low speed, heavy load |
| Cap | Steel cap (F) |
| Type | Self-compensating, speed type 1/2/3 |
|---|---|
| Body thread | M20×1.5 |
| ACA2020 | 20 mm · 60 J/cycle · 50,000 J/h · max. mass 240 / 660 / 960 kg (type 1/2/3) · 175 g |
| ACA2025 | 25 mm · 65 J/cycle · 54,000 J/h · max. mass 260 / 720 / 1040 kg (type 1/2/3) · 185 g |
| ACA2030 | 30 mm · 70 J/cycle · 58,000 J/h · max. mass 280 / 780 / 1120 kg (type 1/2/3) · 210 g |
| ACA2040 | 40 mm · 80 J/cycle · 65,000 J/h · max. mass 320 / 890 / 1280 kg (type 1/2/3) · 225 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.
When the impact face will see punishing, blunt hits, the steel cap of the -3F is the reason to choose it over the plastic-capped ACA2030-3 or the uncapped ACA2030-3N. The -3 speed type is correct for impacts at or under 1 m/s with heavy masses; faster, lighter impacts belong on ACA2030-1 (up to 4 m/s) or ACA2030-2 (up to 2 m/s). If your energy per cycle sits near the 70 J ceiling, the 40 mm ACA2040-3 raises capacity to 80 J/cycle, while ACA2025-3 reduces it to 65 J/cycle.
Slow, heavy hits from pallet trucks and driven loads are the classic steel-cap case, where the striking face must survive repeated blunt contact.
A slow ram pressing a heavy part home benefits from type 3 damping to 1120 kg effective mass, with the steel cap shrugging off repeated hard seating.
Bolted through the M20x1.5 thread or with the flange accessory, the unit protects structural frames where heavy moving equipment stops at 1 m/s or less.
30 mm stroke, M20x1.5 body thread, steel cap (F option), type 3 low speed rating, up to 70 J per cycle and 58000 J/h, effective mass up to 1120 kg, impact speed up to 1 m/s, temperature -5 to +70 C, weight 210 g, stop nut and flange available as accessories.
The catalog lists the steel cap (F) as the option for heavier impacts, so choose -3F when the striking face takes hard, blunt contact. The plastic cap on ACA2030-3 suits normal duty, and the N version has no cap at all, with the rod striking directly. All three share the same 30 mm stroke and type 3 performance.