Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X125-10S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X125-10S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 125mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke125 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X125-10S
The AirTAC ACQJ40X125-10S is a double-acting JIS compact cylinder with an external stroke adjuster. A threaded stop and lock nut restrict the extend end position, providing a usable extend range of 115-125 mm. The retract stroke remains unaffected. This unit is a long-stroke variant, exceeding the 100 mm standard maximum for this bore.
Piston area is unchanged, so force equals a standard ACQ: 628.3 N push and 527.8 N pull at 0.5 MPa. The body includes fixed elastomer bumpers at each end and built-in magnetic-switch grooves. Operating pressure spans 0.15-1.0 MPa, and the Ø16 mm rod features an M8x1.25 female thread.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X125-10S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X125-10S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 125 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 ACQJ40X125-10S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×125 | 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 ACQJ40X125-10S Is Used
Assembly Press Stroke Setup
Dial in the exact 115-125 mm extend position during assembly press changeovers without machining new spacers or swapping cylinders.
Carton Sealing Flap Adjustment
Accommodate varying package heights on a sealing line by turning the external stop to set the precise rod extension for each format.
Long-Reach Gripper Positioning
Establish trial end positions for a long-reach robotic gripper, testing reach distances on the equipment before locking the nut.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X125-10S the Right Cylinder?
This 40 mm bore delivers 628.3 N push at 0.5 MPa. Stepping down to a 32 mm bore yields 402.1 N, while moving up to a 50 mm bore provides 981.8 N. If your machine never requires end-position tuning, a fixed-stroke ACQ cylinder is sufficient. When ordering, verify the bore, 125 mm full stroke, 10 mm window, -S magnet, and 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 ACQJ40X125-10S FAQ
The usable extend range is 115-125 mm (125 mm full stroke minus the 10 mm window). Force is identical to a standard ACQ: 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 external M12x1.25 threaded stop limits the extend stroke length only, leaving the retract stroke unaffected. Deceleration is handled by fixed NBR elastomer bumpers, not an adjustable air cushion. The -S magnet works with reed or solid-state switches.
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
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