Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-50S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-50S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø20mm bore and 90mm 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
- Stroke90 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 ACEJ20X90-50S
The ACEJ20X90-50S is a double acting ISO 21287 compact cylinder with an adjustable extend stroke. Its 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 peak of 32 kgf at 1.0 MPa. The -50 code gives a 50 mm adjustment window, so an external stop screw trims the 90 mm stroke anywhere down to 40 mm on site - no cylinder swap needed.
The short hard-anodized aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into tight pick-and-place gantries and guarding where a full-length body cannot. Because roughly 0.6 of the push force is a sensible working figure, plan on about 94 N of real work at 0.5 MPa - enough to lift about 9 kg vertically, or about 5 kg with a 2:1 margin. This -S model carries the optional magnet, so CMSE / DMSE reed or solid-state switches can be fitted for end-of-stroke sensing, and a fixed TPU bumper absorbs energy at both ends.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-50S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-50S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 90 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 ACEJ20X90-50S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×90 | Stroke length in mm. |
| -50 | 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 ACEJ20X90-50S Is Used
Jig clamping on CNC fixtures
The 40-90 mm trim range lets one cylinder serve several fixture sizes; 157.1 N push at 0.5 MPa clamps small aluminium or plastic workpieces without over-crushing them.
Pick-and-place of connector housings
With a 2:1 margin the rod lifts about 5 kg vertically, ideal for short-stroke Z-axis drops in electronics assembly cells where the compact body fits under the gantry frame.
Position-verified ejection on packaging lines
The fitted -S magnet works with CMSE / DMSE switches to confirm extend and retract on a carton pusher running at 30-500 mm/s, with the stop screw set to a shorter throw for narrow packs.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-50S the Right Cylinder?
Size check: a 16 mm bore gives 100.5 N push at 0.5 MPa, while stepping up to 25 mm raises it to 245.4 N - choose 25 mm if your part weight or friction load sits near the 94 N working band of this 20 mm unit. The stop screw only shortens the extend stroke and is not a mid-stroke lock, so on air loss the piston still drifts; add a valve or external stop if holding matters. FA flange, LB foot and I/Y rod knuckles bolt to the ISO 21287 face, and the fitted -S magnet pairs with CMSE / DMSE switches. Female M6x1.0 rod thread, M5x0.8 ports, PT.
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 ACEJ20X90-50S FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa that rises to 219.9 N push and 164.9 N pull, with a theoretical maximum of 32 kgf at 1.0 MPa. The -50 code sets a 50 mm adjustment window, so the external stop screw trims the 90 mm extend stroke down to 40 mm. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, and the bore 20 port is M5x0.8.
It is an ISO 21287 compact cylinder: hard-anodized aluminium body, S45C hard-chrome plated 10 mm rod, threaded aluminium covers and a fixed TPU bumper at each end that only decelerates at the ends of travel - it never locks or holds a load. The body is about 50% shorter in mounting length than an ISO 15552 profile cylinder. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches mount in the body slots; FA flange and LB foot mountings plus I/Y rod knuckles bolt straight to the standard face.
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.
Request a Quote for Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-50S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.