Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10SB
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10SB is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø20mm bore and 75mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. Its short compact envelope saves about 50% of the mounting length of an ISO 15552 profile cylinder.
- BoreØ20 mm
- Stroke75 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM6×1.0
- CushionFixed TPU bumper (both ends)
About the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10SB
This ACEJ20X75-10SB is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 75 mm stroke by up to 10 mm on site, giving a usable range of 65-75 mm without changing the cylinder. The 20 mm bore delivers 157.1 N push and 117.8 N pull at 0.5 MPa, rising to 219.9 N push at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa. As a rule of thumb, plan on roughly 94 N, about 9.6 kg of real work, rather than the full rating.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs, guards and gantry frames. The hard-anodized aluminium body carries a hard-chrome plated S45C rod with a male thread (the B code), and fixed TPU bumpers absorb end-of-stroke energy. Because this model carries the -S magnet code, CMSE / DMSE reed or solid-state switches can be mounted directly in the body slots. Operating range is 0.15-1.0 MPa (22-145 psi) at 30-500 mm/s.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10SB Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10SB |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 75 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 |
| Cushion | Fixed TPU bumper (both ends) |
| Max standard stroke | Up to 100 mm |
Specifications follow the official AirTAC ACE-series (ISO 21287) datasheet. Body: hard-anodized aluminium alloy; piston rod: S45C carbon steel with hard-chrome plating. Rod type: female thread (blank) or male thread (B). Thread options: PT (blank) / G. A built-in magnet is OPTIONAL — add the -S code to fit CMSE / DMSE position sensors.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 118 N |
| 0.7 MPa | 220 N | 165 N |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10SB
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×75 | Stroke length in mm. |
| -10 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| S | Optional built-in magnet for CMSE / DMSE sensors (omit for no magnet). |
| B | Rod type: B = male thread; blank = female thread. |
ACE-family variants: ACE (double acting), ASE / ATE (single acting push / pull), ACED (double rod), ACEJ (adjustable stroke), TACE / TACED (non-rotating twin-guide yoke). Mounting accessories: FA / FB flange, LB foot, CA / CB clevis, CR, SDB pivot, FTC; plus I and Y knuckles. Thread PT (blank) / G.
Where the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10SB Is Used
Small jig clamping
The 65-75 mm adjustable extend range lets a fixture builder dial in exact clamp position on light aluminium brackets, with 157.1 N push at 0.5 MPa holding the part during a drilling or riveting cycle.
Packaging line push-off
A short-body cylinder fits under low conveyor guards where a full-length profile cylinder cannot, nudging cartons or blisters off the belt at 30-500 mm/s within the 10 mm trim window.
Gated assembly station
With the fitted -S magnet driving CMSE or DMSE switches, the stroke end positions report back to the PLC on a compact electronics assembly bench, confirming the part is fully seated before the next step.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10SB the Right Cylinder?
At 157.1 N push at 0.5 MPa, this 20 mm bore suits light clamping and positioning. Step down to the 16 mm bore (100.5 N push) for smaller loads, or up to the 25 mm bore (245.4 N push) if the duty grows. Remember the stop screw is a mechanical end stop for the extend stroke only: on air loss the piston still drifts, so it is not a mid-stroke lock. FA flange or LB foot mounts bolt to the ISO 21287 face, and the fitted -S magnet lets you add CMSE / DMSE switches for end-position sensing.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Short stroke fits the compact body
- ✓ Port/thread type (PT / G)
- ✓ Add -S if you need the magnet for sensors
- ✓ Rod type (female / male B) & mount (FA/LB/CA)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Compact body: keep the stroke short and avoid side load on the rod.
- check Do not dismantle the threaded front/back covers.
- check Keep speed within the rated range; the TPU bumper absorbs stroke-end energy.
- check Installation by qualified personnel per AirTAC docs.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10SB FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa it pushes 219.9 N and pulls 164.9 N, with a theoretical maximum of 32 kgf at 1.0 MPa. The -10 code is a 10 mm adjustment window: an external stop screw shortens the 75 mm extend stroke by up to 10 mm, so the working range is 65-75 mm. It shortens the stroke only and acts as a mechanical end stop, not a load-holding lock. Operating pressure is 0.15-1.0 MPa (22-145 psi) at 30-500 mm/s, port M5x0.8, rod 10 mm with male thread.
The ISO 21287 compact body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a hard-anodized aluminium body, hard-chrome S45C rod and fixed TPU bumpers at both ends. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches can be clipped into the body slots for end-position detection. FA flange, LB foot and I/Y rod knuckles bolt straight to the ISO 21287 mounting face.
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