Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X70-40S
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X70-40S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø80mm bore and 70mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ80 mm
- Full stroke70 mm
- Port sizePT3/8
- Adjuster threadM20×1.5
About the Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X70-40S
The AirTAC ACQJ80X70-40S is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You get a usable extend range of 30 to 70 mm, set by subtracting the 40 mm window from the 70 mm full stroke. The retract stroke remains completely unaffected. Because the piston area stays constant, force output is identical to a standard ACQ of the same bore.
This bore 80 unit features a 25 mm piston rod, a PT3/8 port, and a female M16x2.0 rod-end thread. It includes a fixed NBR elastomer bumper at each end for end-of-stroke deceleration instead of an adjustable air cushion. The -S suffix means a built-in piston magnet is present, allowing you to mount AirTAC reed or electronic solid-state switches directly into the body grooves for position sensing.
Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X70-40S Technical Specifications
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X70-40S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Full stroke | 70 mm |
| Adjuster thread | M20×1.5 |
| Port size | PT3/8 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Rod thread | M16×2.0 (F) / M22×1.5 (B) |
Specifications follow the official AirTAC ACQJ datasheet. The adjustable stop shortens the EXTEND stroke only; the piston area — and therefore the force — is the same as a standard ACQ of this bore. Adjustable window options: 10/20/30/40/50/75/100 mm.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Force equals a standard ACQ of the same bore — the adjuster changes stroke length, not piston area. Actual usable force is lower due to friction; size with a safety margin.
Model Code: Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X70-40S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×70 | Full stroke length in mm. |
| -0 | Adjustable window in mm (extend stroke can be shortened by up to this). |
| S / B | Magnet (S) / male-thread rod (B); omit for none / female thread. |
Thread: PT standard (G / NPT available). Related: ACQ (fixed stroke), ACQD (double rod), TACQ (guided / non-rotating).
Where the Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X70-40S Is Used
CNC Vise Clamping
Dial in the exact clamping reach on a CNC machining center during new fixture setup, using the external stop to test different jaw positions without machining new spacers.
Carton Flap Folding
Adjust the folding arm end position on a packaging line for varying box heights, ensuring crisp folds on different product sizes during quick changeover.
Press Tonnage Trial
Set trial end stops on a light assembly press to find the perfect engagement depth for new components before locking the adjuster nut down for production runs.
Is the Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X70-40S the Right Cylinder?
Selecting this 80 mm bore gives a push force of 2513.2 N and pull of 2267.8 N at 0.5 MPa. If you need less force, the 63 mm bore provides 1558.6 N push, while the larger 100 mm bore yields 3927.0 N push at the same pressure. Choose this adjustable model when you need on-the-fly end-position tuning without swapping parts; if your machine only needs a fixed 70 mm reach, a standard ACQ series cylinder will suffice. Confirm your ordering essentials: 80 mm bore, 70 mm full stroke, 40 mm window, the -S magnet, and your required rod thread.
Quick checklist
- ✓ Need on-machine end-position tuning?
- ✓ Full stroke and adjust window (mm)
- ✓ Force at your working pressure
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Lock the adjuster nut after setting the stop.
- check The stop limits the EXTEND stroke only.
- check Avoid side load on the short piston rod.
- check Installation by qualified personnel per AirTAC docs.
Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X70-40S FAQ
At 0.5 MPa the push force is 2513.2 N and pull is 2267.8 N; at 0.7 MPa push is 3518.5 N. Maximum push is 513 kgf at 1.0 MPa. The usable extend range is 30 to 70 mm (70 mm full stroke minus the 40 mm window). The adjuster thread is M20x1.5, the port is PT3/8, and the female rod-end thread is M16x2.0.
No, the external threaded stop changes only the extend stroke length, not the piston area, so force remains identical to a standard ACQ. It is not a load-holding brake; a plain cylinder drifts on air loss. End-of-stroke deceleration is handled by a fixed elastomer bumper, so for high energy loads you should add an external shock absorber.
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