Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-30SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-30SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 40mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke40 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-30SB
The AirTAC ACQJ40X40-30SB 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 10-40 mm (the 40 mm full stroke minus up to a 30 mm window), while the RETRACT stroke remains unaffected. Because the piston area stays constant, force is identical to a standard ACQ of this bore.
This unit includes the -S magnet for reed or electronic solid-state switches and the -B male piston rod end (M14x1.5) for direct load coupling. It uses a PT1/8 port, features a fixed NBR elastomer bumper at each end for deceleration, and has a 16 mm rod. Operating pressure spans 0.15-1.0 MPa with speeds of 30-500 mm/s.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-30SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-30SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 40 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 ACQJ40X40-30SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 ACQJ40X40-30SB Is Used
Product Changeover Stops
Dial in the extend position from 10 to 40 mm on packaging lines when switching carton sizes, avoiding physical part swaps.
Trial End Positions
Fine-tune the clamping reach on a CNC fixture to find the exact holding point without machining custom spacers.
Setup-Varying Fixtures
Accommodate varying material thicknesses in an assembly press by backing off the extend stroke via the M12x1.25 adjuster.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-30SB the Right Cylinder?
If sizing around this 40 mm bore, stepping down to a 32 mm bore yields 402.1 N push @0.5 MPa, while stepping up to a 50 mm bore provides 981.8 N push @0.5 MPa. A fixed-stroke ACQ suffices if your end position never varies. Confirm ordering essentials: 40 mm bore, 40 mm full stroke, 30 mm window, magnet (-S), and male rod thread (-B).
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 ACQJ40X40-30SB FAQ
It delivers 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 usable extend range is 10-40 mm (a 30 mm window off the 40 mm full stroke). The port is PT1/8, and the adjuster thread is M12x1.25.
The external threaded stop with lock nut limits only the extend length, leaving retract unchanged. Force remains identical to a standard ACQ because the piston area is unaltered. Fixed elastomer bumpers decelerate the rod near stroke ends; a plain ACQ does not hold loads on air loss, so use an external rod lock for fail-safe holding.
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 ACQJ40X40-30SB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.