Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 45mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke45 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40S
The AirTAC ACQJ40X45-40S is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You can fine-tune the usable extend range from 5 mm up to the full 45 mm directly on your machinery without swapping parts. The retract stroke remains completely unaffected by this mechanism.
Because the piston area stays the same, output force is identical to a standard ACQ bore 40 unit. This specific model delivers 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. It features a 16 mm piston rod, an M8x1.25 female rod-end thread, an M12x1.25 external adjuster thread, and fixed elastomer bumpers rather than adjustable pneumatic cushions.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 45 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 ACQJ40X45-40S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×45 | 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 ACQJ40X45-40S Is Used
Machining Fixture Clamps
Dial in the exact clamping reach on a CNC mill fixture between operations, allowing 5 to 45 mm of extend travel to accommodate varying raw stock thicknesses.
Product Changeover Diverters
Adjust the extend stop on a packaging line diverter arm during format changeovers, avoiding the need to fabricate or install custom physical spacer collars.
Assembly Press Trial Positions
Set trial end positions for pressing bearings into housings, safely limiting the extend stroke to a precise depth before committing to a final fixed mechanical stop.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40S the Right Cylinder?
If your application only requires a fixed 45 mm extend and retract, a standard ACQ40X45 cylinder will suffice without the external adjuster hardware. When sizing for force, this 40 mm bore provides 628.3 N push at 0.5 MPa; stepping down to a 32 mm bore yields 402.1 N push, while stepping up to a 50 mm bore provides 981.8 N push. To order this adjustable variant correctly, confirm the 40 mm bore, 45 mm full stroke, 40 mm adjustment window, the S magnet option, and the default female M8x1.25 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 ACQJ40X45-40S FAQ
At 0.5 MPa it provides 628.3 N push and 527.8 N pull force, and 879.6 N push at 0.7 MPa. The maximum push force is 128 kgf at 1.0 MPa. The full stroke is 45 mm with a 40 mm window, allowing an adjustable usable extend range of 5 to 45 mm. The external adjuster features an M12x1.25 thread.
No, the external stop only changes the extend length, not the piston area, so force remains identical to a standard ACQ40. Deceleration is handled by fixed NBR elastomer bumpers at each end rather than adjustable air cushions. Additionally, the S magnet option allows the use of either reed or electronic solid-state switches in the body grooves.
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 ACQJ40X45-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.