Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-50SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-50SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 175mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke175 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-50SB
The AirTAC ACQJ140X175-50SB is a double-acting JIS compact cylinder from the big-bore range, featuring an external threaded stop with a lock nut to limit the extend stroke. You can fine-tune the extension end-position on the machine, yielding a usable extend range of 125 to 175 mm. The retract movement remains completely unaffected by this adjustment.
Because the adjuster only alters travel length and not the piston area, the output force is identical to a standard ACQ of the same bore, providing 7696.9 N push and 7294.8 N pull at 0.5 MPa. This model includes a male M30x1.5 rod end for direct load coupling, a PT3/8 port, and a built-in magnet (-S) compatible with reed or solid-state switches. Deceleration relies on a fixed NBR elastomer bumper at each end.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-50SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-50SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 175 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 (Ø140mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 7697 N | 7295 N |
| 0.7 MPa | 10776 N | — |
| Max (@1.0 MPa) | 1570 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 ACQJ140X175-50SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×175 | 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 ACQJ140X175-50SB Is Used
Heavy Press Tooling Changeover
Adjusts the extend stop during die-set changeovers in metal fabrication, allowing operators to dial in new end positions from 125 to 175 mm without swapping cylinders.
Large Assembly Fixture Tuning
Provides trial end positions for clamping large automotive components, fine-tuning the stroke on the machine to achieve precise mating without adding spacer plates.
Woodworking Machinery Setup
Sets varying cut depths or stop limits on heavy woodworking lines, using the external M27x2.0 adjuster to modify the extend endpoint for different material profiles.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-50SB the Right Cylinder?
When sizing this big-bore 140 mm unit, dropping down to a 125 mm bore yields 6135.9 N push at 0.5 MPa, while stepping up to a 160 mm bore provides 10053.1 N push at 0.5 MPa. If your application never requires altering the end-point, a fixed-stroke ACQ cylinder is sufficient and simpler. To order this adjustable version correctly, confirm the 140 mm bore, 175 mm full stroke, 50 mm window, the -S magnet for sensors, and the -B male M30x1.5 piston 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 ACQJ140X175-50SB FAQ
It delivers 7696.9 N push and 7294.8 N pull at 0.5 MPa, 10775.7 N push at 0.7 MPa, and a maximum push of 1570 kgf at 1.0 MPa. The full stroke is 175 mm with a 50 mm window, giving a usable extend range of 125 to 175 mm. It features a 32 mm rod, a male M30x1.5 rod thread, a PT3/8 port, and an M27x2.0 adjuster thread.
An external threaded stop with a lock nut limits the extension travel, allowing on-machine tuning without changing parts. The force remains identical to a standard ACQ because the piston area is unchanged. The cylinder uses fixed elastomer bumpers for deceleration rather than adjustable air cushions. Note that a plain compact cylinder does not hold its load on air loss; for a fail-safe hold, use 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 ACQJ140X175-50SB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.