Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-40SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-40SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø160mm bore and 125mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ160 mm
- Full stroke125 mm
- Port sizePT3/8
- Adjuster threadM36×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-40SB
The ACQJ160X125-40SB is a double-acting JIS compact cylinder from AirTAC's big-bore range, engineered with an external threaded stop and lock nut to precisely limit the EXTEND end position. You can tune the usable extend travel from 85mm up to the full 125mm directly on the machine, while the RETRACT stroke remains completely unaffected. Delivering massive power, it generates 10053.1N of push force at 0.5 MPa.
Because the adjuster only alters travel length and not piston area, the output force stays identical to a standard ACQ of this bore. This unit includes a male-thread piston rod end (M36x1.5) for direct load coupling and a built-in magnet (-S) for position sensing. It relies on a fixed NBR elastomer bumper at each end for deceleration rather than an adjustable air cushion.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-40SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-40SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø160 mm |
| Full stroke | 125 mm |
| Adjuster thread | M36×2.0 |
| 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 | M24×3.0 (F) / M36×1.5 (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 (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 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 ACQJ160X125-40SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 160 | 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-40SB Is Used
Heavy Press Tuning
Dial in the exact 85-125mm extend position during heavy press setup to accommodate varying material thicknesses without machining new spacers.
Large Fixture Changeover
Adapt large automated welding fixtures rapidly by turning the external M36x2.0 stopper to meet new product dimensions on the fly.
Heavy Lift Trial Stops
Safely test end positions on heavy lifting platforms before finalizing the design, ensuring the fixed bumper does not absorb unintended impacts.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-40SB the Right Cylinder?
When sizing this big-bore unit, consider the neighbouring bore 140 which yields 7696.9N push, or the 160 bore providing 10053.1N at 0.5 MPa. If the exact 125mm extend position never varies, a fixed-stroke ACQ cylinder suffices. To order this adjustable version, confirm the 160mm bore, 125mm full stroke, 40mm window, the -S magnet, and -B male 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 ACQJ160X125-40SB FAQ
At 0.5 MPa it provides 10053.1N push and 9424.8N pull; at 0.7 MPa push is 14074.3N; max push is 2050kgf at 1.0MPa. The usable extend range is 85-125mm (125mm full stroke minus the 40mm window). The rod is Ø40mm, the port is PT3/8, and the external adjuster thread is M36x2.0.
The external threaded stop physically limits how far the rod extends without changing the piston area, so force remains identical to a standard ACQ. The retract stroke is unaffected. It uses a fixed NBR elastomer bumper for end-of-stroke deceleration, not an adjustable cushion or rod lock, so for fail-safe load holding on air loss you need an external rod lock or pilot-operated check valve.
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 ACQJ160X125-40SB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.