Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X40-30SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X40-30SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 40mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke40 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X40-30SB
The ACQJ125X40-30SB is a double-acting JIS compact cylinder featuring a big-bore 125mm piston and an external extend stop. A threaded rod with a lock nut lets you set the forward end position on the machine, yielding a usable extend range of 10 to 40mm from the 40mm full stroke. The return stroke is unaffected. Because the piston area is unchanged, force is identical to a standard ACQ of this bore.
This SB configuration includes a male M30x1.5 piston rod end for direct load coupling and a built-in piston magnet compatible with reed or solid-state switches. It pushes with 6135.9N and pulls with 5733.8N at 0.5MPa. Fixed NBR elastomer bumpers at each end decelerate the load, though external shock absorbers are suggested for high-energy approaches.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X40-30SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X40-30SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 40 mm |
| Adjuster thread | M27×2.0 |
| Port size | PT3/8 |
| 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 | M22×2.5 (F) / M30×1.5 (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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ125X40-30SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ125X40-30SB Is Used
Press Tooling Changeover
Dial in the extend stop from 10 to 40mm during product family changeovers on a large press line without swapping hardware.
Heavy Assembly Stations
Securely drive heavy automotive fixtures using the male M30x1.5 rod thread while tuning the final clamping position.
Pallet Positioning Stops
Set precise end stops for large pallets on a conveyor, adjusting the window on-site to test different package heights.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X40-30SB the Right Cylinder?
If you need less thrust, the 100mm bore yields 3927.0N push at 0.5MPa, while the larger 160mm bore provides 10053.1N. A fixed-stroke ACQ suffices if your end position never varies. When ordering this adjustable unit, verify the 125mm bore, 40mm full stroke, 30mm window, PT3/8 port, the S magnet, and the B male M30x1.5 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ125X40-30SB FAQ
It provides 6135.9N push and 5733.8N pull at 0.5MPa, 8590.3N push at 0.7MPa, and a maximum push of 1251kgf at 1.0MPa. The 40mm full stroke has a 30mm window, giving a usable extend range of 10-40mm.
An external M27x2.0 threaded stop with a lock nut limits the forward travel, shortening the extend stroke without changing piston area, so force remains identical to a standard ACQ. Fixed elastomer bumpers decelerate movement at both ends, and the S magnet works with reed or electronic 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
Request a Quote for Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X40-30SB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.