Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 25mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke25 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10B
The AirTAC ACQJ40X25-10B is a double-acting JIS compact cylinder featuring a male-thread piston rod end (M14x1.5) that couples directly to your load. An external M12x1.25 threaded stop and lock nut limits the extend end position, providing a usable extend range of 15-25 mm from the 25 mm full stroke. The retract stroke remains completely unaffected.
Because the adjuster alters stroke length only, the piston area stays the same, meaning force is identical to a standard ACQ of this bore. The cylinder body includes sensor grooves for reed or solid-state switches, though this specific configuration ships without a magnet. It relies on a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 25 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 ACQJ40X25-10B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×25 | 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 ACQJ40X25-10B Is Used
Machining Fixture Stops
Dial in the extend stroke from 15 to 25 mm on a CNC machining fixture to accommodate varying raw part widths without swapping out the cylinder body.
Sorting Diverter Arms
Adjust the extend stop on a conveyor sorting diverter to handle different package sizes during production changeovers quickly and precisely.
Carton Sealing Tamps
Fine-tune the end position of a carton sealing tamp head within the 10 mm window to prevent crushing boxes of varying heights.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10B the Right Cylinder?
This 40 mm bore delivers 628.3 N push and 527.8 N pull at 0.5 MPa. If you need less force, a 32 mm bore provides 402.1 N push, while stepping up to a 50 mm bore yields 981.8 N push. Choose this adjustable model when trial end positions or product-changeover stops require on-machine tuning; otherwise, a fixed-stroke ACQ suffices. Confirm your ordering essentials: 40 mm bore, 25 mm full stroke, 10 mm window, male rod thread (-B), and no magnet.
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 ACQJ40X25-10B FAQ
It provides 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa. The full stroke is 25 mm with a 10 mm adjustable window, giving a usable extend range of 15-25 mm. The retract stroke is unaffected, and force remains identical to a standard ACQ of the same bore.
An external M12x1.25 threaded stop with a lock nut mechanically limits the extend stroke, allowing you to shorten it without changing parts. This mechanism changes stroke length only, so output force is unchanged. The cylinder uses a fixed NBR elastomer bumper at each end for deceleration rather than an adjustable air cushion, so external shock absorbers may be needed for high-energy loads.
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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.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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