Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-40S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-40S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø20mm bore and 60mm 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
- Stroke60 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 ACEJ20X60-40S
A double acting ISO 21287 compact cylinder with an adjustable extend stroke, the ACEJ20X60-40S pairs a 20 mm bore with a 60 mm stroke and a 40 mm adjustment window. An external stop screw trims the extend stroke on site anywhere from 20 mm to the full 60 mm, so one cylinder covers several jig positions. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa those rise to 219.9 N and 164.9 N, with a theoretical 32 kgf at 1.0 MPa. In practice, plan on roughly 94 N (about 9.6 kg of force) of usable work at 0.5 MPa, or expect it to lift about 8 kg vertically with a 2:1 margin.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures and guarding. A hard-anodized aluminium body carries a hard-chrome plated S45C rod, with a fixed TPU bumper at each end to absorb end-of-stroke impact. This model carries the optional -S magnet, so CMSE or DMSE reed and solid-state switches can be clamped straight onto the body for end-of-stroke signalling. Ports are M5x0.8, the rod end is female M6x1.0, and speed runs 30-500 mm/s.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-40S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-40S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 60 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 ACEJ20X60-40S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×60 | Stroke length in mm. |
| -40 | 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 ACEJ20X60-40S Is Used
Small-part clamping on CNC fixtures
The 94 N usable push at 0.5 MPa is enough to hold aluminium or plastic workpieces during light machining, and the 20-60 mm stroke range lets one fixture handle several part heights.
Reject pusher on packaging lines
A 60 mm stroke with on-site trimming to 20 mm matches narrow conveyor lanes, while the fitted magnet and CMSE switches confirm the pusher has fully retracted before the next carton arrives.
Sample lift in lab automation
With about 8 kg of vertical lift capacity at a 2:1 margin, the cylinder raises microplate stacks or sample trays inside compact analyser frames where a full-length profile cylinder will not fit.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-40S the Right Cylinder?
At 157.1 N push at 0.5 MPa, this 20 mm bore suits light clamping, positioning and small part ejection. Step down to a 16 mm bore (100.5 N push) for lighter loads, or up to a 25 mm bore (245.4 N push) if you need more headroom without changing the envelope much. Remember the stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock: on air loss the piston still drifts, so do not rely on it to hold a load. FA flange and LB foot mountings bolt to the standard ISO 21287 face, and the fitted -S magnet lets CMSE / DMSE switches report stroke position.
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 ACEJ20X60-40S 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; theoretical maximum is 32 kgf at 1.0 MPa. The -40 code is a 40 mm adjustment window: an external stop screw shortens the 60 mm extend stroke by up to 40 mm, giving a usable range of 20-60 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 port is M5x0.8 with a female M6x1.0 rod thread.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits shallow jigs, guards and gantries. This model carries the optional -S magnet, so CMSE or DMSE reed and solid-state switches mount directly in the body slots for end-of-stroke detection. A fixed TPU bumper at each end absorbs end-of-stroke impact, FA flange and LB foot mountings bolt to the standard face, and the hard-anodized aluminium body runs on a hard-chrome plated S45C rod.
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 ACEJ20X60-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.