Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-50S
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-50S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 100mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke100 mm
- Port sizeM5×0.8
- Adjuster threadM8×1.25
- 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 ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-50S
The ACQJ20X100-50S is a double-acting JIS compact cylinder with a 20mm bore and a 100mm full stroke. An external M8x1.25 threaded stop and lock nut restricts the extend end position, providing a usable extend range of 50 to 100mm. Retract travel remains fixed at the full stroke length. Because the piston area is unaltered, the output force is identical to a standard ACQ of this bore size.
This unit delivers 157.1N push and 117.8N pull force at 0.5MPa, with a 32kgf maximum push at 1.0MPa. It includes a built-in piston magnet compatible with reed or electronic solid-state switches, and utilizes fixed elastomer bumpers at both ends for end-of-stroke deceleration. The M5x0.8 port and compact riveted body design save valuable installation space.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-50S Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-50S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 100 mm |
| Adjuster thread | M8×1.25 |
| Port size | M5×0.8 |
| 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 | M5×0.8 (F) / M8×1.25 (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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 118 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 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 ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-50S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | 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 ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-50S Is Used
CNC Machining Clamps
Dial in the extend stop from 50 to 100mm to secure varying raw material widths during CNC milling changeovers without fabricating custom spacer blocks.
Conveyor Sorting Gates
Adjust the extend position on the line to route different package sizes, ensuring the diverter gate hits the exact required angle for each product run.
Lab Test Fixtures
Find the optimal end position for sensor calibration rigs by micro-adjusting the external stop nut during trial runs, locking it down once the ideal travel is found.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-50S the Right Cylinder?
Selecting this model gives you on-machine extend-end tuning without swapping parts, highly useful for prototyping or varying product changeovers. If your application requires a fixed 100mm extend stroke every cycle, a standard ACQ20X100S is sufficient. When sizing for force, stepping down to a 16mm bore yields 100.5N push at 0.5MPa, while stepping up to a 25mm bore provides 245.4N push at 0.5MPa. Confirm your ordering essentials: 20mm bore, 100mm full stroke, 50mm adjuster window, S magnet for sensors, and the default female M5x0.8 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 ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-50S FAQ
It provides 157.1N push and 117.8N pull at 0.5MPa, 219.9N push at 0.7MPa, and a maximum push of 32kgf at 1.0MPa. The usable extend range is 50-100mm (a 100mm full stroke minus a 50mm adjustable window), while the retract stroke remains unaffected at 100mm.
The M8x1.25 external threaded stop changes only the extend travel length, not the piston area, so the output force remains identical to a standard ACQ20. Deceleration is handled by fixed elastomer bumpers at each end, not adjustable air cushions. Note that this cylinder will drift and will not hold a load if air pressure is lost.
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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