Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-20SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-20SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 125mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke125 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-20SB
The ACQJ125X125-20SB is a double-acting JIS compact cylinder featuring an external threaded stop and lock nut that limits the extend end position. You can fine-tune the usable extend range from 105 mm up to the full 125 mm directly on your machinery, while the retract stroke remains completely unaffected. As a big-bore variant, it handles heavy-duty tasks within a space-saving riveted body design.
Because the internal piston area is unchanged, the output force is identical to a standard ACQ of this bore, yielding 6135.9 N of push force at 0.5 MPa. This unit includes the male M30x1.5 rod-end thread for direct load coupling, a piston magnet for position sensing, and fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-20SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-20SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 125 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 ACQJ125X125-20SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | 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 ACQJ125X125-20SB Is Used
Heavy Press Tonnage Setup
Dial in the exact 105-125 mm extend position during heavy press changeovers without machining new stop collars.
Large Assembly Fixture Tuning
Adapt end-of-stroke positions on the fly for large automotive sub-assembly fixtures handling varying product dimensions.
Palletizer End-Stop Trials
Test and set precise final end positions for large palletizing arms before locking down the external stop nut.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-20SB the Right Cylinder?
When sizing this big-bore unit, stepping down to a 100 mm bore drops the 0.5 MPa push force to 3927.0 N, whereas stepping up to a 140 mm bore increases it to 7696.9 N. If your application requires a fixed extend length and never needs on-the-fly adjustments, a standard ACQ cylinder will suffice. To order this adjustable model correctly, confirm the 125 mm bore, 125 mm full stroke, 20 mm window, the S magnet option, and the 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 ACQJ125X125-20SB FAQ
The usable extend range is 105-125 mm (a 20 mm window off the 125 mm full stroke). Force is identical to a standard ACQ: push is 6135.9 N and pull is 5733.8 N at 0.5 MPa, push is 8590.3 N at 0.7 MPa, and maximum push is 1251 kgf at 1.0 MPa.
An external M27x2.0 threaded stop with a lock nut limits the extend stroke only; retract is unaffected and force stays the same. The cylinder uses fixed NBR elastomer bumpers, not adjustable air cushions. The built-in -S magnet works with both reed and solid-state 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 are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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