Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-75S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-75S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 100mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke100 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-75S
The AirTAC ACQJ125X100-75S is a double-acting JIS compact cylinder from the big-bore range, featuring an external threaded stop and lock nut that limits the EXTEND end position. You can fine-tune the usable extend stroke from 25 mm up to the full 100 mm directly on the machine, while the RETRACT stroke remains completely unaffected. The piston rod measures Ø32 mm, and the standard port size is PT3/8.
Because the adjuster only alters travel length and not the piston area, the output force is identical to a standard ACQ of this bore. It generates 6135.9 N push and 5733.8 N pull at 0.5 MPa, reaching 8590.3 N push at 0.7 MPa, with a maximum push of 1251 kgf at 1.0 MPa. The cylinder uses a fixed NBR elastomer bumper at each end for deceleration, and the included -S magnet works seamlessly with reed or solid-state switches.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-75S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-75S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 100 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 ACQJ125X100-75S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×100 | 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 ACQJ125X100-75S Is Used
Press Tooling Changeover
Dial in the exact extend stop from 25 to 100 mm when swapping press dies of varying heights, avoiding the need to fabricate custom spacer rings.
Heavy Material Forming
Set precise end positions for large metal bending operations, utilizing the 1251 kgf max push force to form thick stock reliably.
Automated Assembly Trials
Test multiple extend endpoints during new product line commissioning to find the optimal contact pressure before locking down the adjuster nut.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-75S the Right Cylinder?
When sizing this big-bore unit, stepping down to an ACQJ100 bore yields 3927.0 N push at 0.5 MPa, whereas stepping up to an ACQJ140 bore provides 7696.9 N push at 0.5 MPa. If your equipment always operates at a fixed 100 mm extend distance without needing end-position tuning, a standard ACQ125X100 cylinder is sufficient. To order this adjustable unit correctly, confirm the 125 mm bore, 100 mm full stroke, 75 mm window, the -S magnet option, and the default female M22x2.5 rod-end 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 ACQJ125X100-75S FAQ
At 0.5 MPa, the push force is 6135.9 N and the pull force is 5733.8 N. At 0.7 MPa, the push force is 8590.3 N, with a maximum push of 1251 kgf at 1.0 MPa. The usable extend range is 25 mm to 100 mm, meaning the 75 mm window allows you to shorten the full 100 mm stroke by up to 75 mm.
An external M27x2.0 threaded stop with a lock nut mechanically limits how far the rod extends, meaning the force remains identical to a standard ACQ because the piston area is unchanged. The cylinder relies on a fixed NBR elastomer bumper at each end for deceleration rather than an adjustable air cushion. Note that a plain compact cylinder does not hold its load on air loss; use an external rod lock or pilot-operated check valve 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.