Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-10S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-10S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 70mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke70 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-10S
The AirTAC ACQJ40X70-10S is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. You can fine-tune the usable extend range from 60 to 70 mm directly on your machinery without swapping parts, while the retract stroke remains completely unaffected. Driven by a 40 mm bore, it delivers a push force of 628.3 N and a pull force of 527.8 N at 0.5 MPa.
Because the adjuster alters stroke length only, the piston area stays the same, meaning output force is identical to a standard ACQ of this bore. This unit includes a built-in piston magnet (-S) compatible with reed or electronic solid-state switches. It utilizes a 16 mm rod with an M8x1.25 female rod-end thread, a PT1/8 port, and fixed elastomer NBR bumpers at both ends for end-of-stroke deceleration.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-10S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-10S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 70 mm |
| Adjuster thread | M12×1.25 |
| Port size | PT1/8 |
| 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 | M8×1.25 (F) / M14×1.5 (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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-10S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | 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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-10S Is Used
Machining Fixture Stops
Dial in the exact 60 to 70 mm extend position on a CNC machining fixture to accommodate varying raw casting lengths without fabricating new mechanical stops.
Packaging Changeover
Rapidly adjust the end-of-stroke position during packaging line product changeovers, utilizing the M12x1.25 external adjuster to set precise carton forming limits.
Assembly Press Trials
Establish optimal trial end positions for pressing bearings on an assembly line, safely testing different extend depths before locking down the final stroke.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-10S the Right Cylinder?
Selecting this 40 mm bore actuator provides a 628.3 N push force at 0.5 MPa, sitting between the smaller 32 mm bore (402.1 N push) and the larger 50 mm bore (981.8 N push). If your application never requires end-position adjustments, a fixed-stroke ACQ cylinder will achieve the same holding force. When ordering this adjustable variant, confirm the 70 mm full stroke, the 10 mm adjustment window, the required -S magnet for sensing, and the M8x1.25 female 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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-10S FAQ
At 0.5 MPa, the push force is 628.3 N and the pull force is 527.8 N. At 0.7 MPa, the push force is 879.6 N, with a maximum push of 128 kgf at 1.0 MPa. The full stroke is 70 mm with a 10 mm adjustment window, yielding a usable extend range of 60 to 70 mm.
The external M12x1.25 threaded stop and lock nut physically limit how far the rod extends, shortening the stroke without changing the piston area, so force remains identical to a standard ACQ. The cylinder relies on fixed elastomer NBR bumpers at each end for deceleration rather than adjustable air cushions.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
Request a Quote for Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-10S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.