Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20SB
The AirTAC Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20SB is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø63mm bore and 70mm stroke, 1/8" 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.
- BoreØ63 mm
- Stroke70 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM10×1.5
- CushionFixed TPU bumper (both ends)
- 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 ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20SB
A double acting ISO 21287 compact cylinder, the ACEJ63X70-20SB pairs a 63 mm bore with a 70 mm stroke that a stop screw can trim anywhere in a 20 mm window, giving a usable extend range of 50-70 mm without swapping the cylinder. At 0.5 MPa it pushes 1558.6 N and pulls 1458.1 N, rising to 2182.1 N at 0.7 MPa, so it sits comfortably in the mid-heavy thrust class for clamping, pressing and lifting fixtures.
The hard-anodized aluminium body with an S45C hard-chrome rod saves about 50% of the mounting length of an ISO 15552 profile cylinder, which matters inside press frames and weld jigs where every millimetre counts. Because the -S magnet is fitted on this model, CMSE or DMSE reed and solid-state switches can be slid onto the body for end-of-stroke signalling. Rule-of-thumb sizing: about 0.6 of the push force, roughly 935 N, is a realistic working load, which is the vertical equivalent of lifting about 95 kg - or around 48 kg with a 2:1 margin.
Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20SB Technical Specifications
| Model | Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20SB |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø63 mm |
| Stroke | 70 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M10×1.5 |
| 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 250 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1458 N |
| 0.7 MPa | 2182 N | 2041 N |
| Max (@1.0 MPa) | 318 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20SB
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 63 | Bore size in mm. |
| ×70 | Stroke length in mm. |
| -20 | 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 ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20SB Is Used
Weld jig clamping
The 1558.6 N push at 0.5 MPa holds steel brackets against weld stops, and the 50-70 mm adjustable range lets the fixture builder dial in the clamp position after tryout.
Bench-top press station
With 2182.1 N available at 0.7 MPa, the 63 mm bore presses bearings or bushings into housings on a compact assembly bench where the short ISO 21287 body fits under a fixed frame.
Pallet gate actuation
In warehouse conveyor lines the cylinder swings or lifts gate sections, and the fitted -S magnet with a DMSE switch confirms gate-open and gate-closed positions to the PLC.
Is the Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20SB the Right Cylinder?
At 63 mm bore this model delivers 1558.6 N push at 0.5 MPa; step down to a 50 mm bore (981.7 N) for lighter clamps or up to an 80 mm bore (2513.3 N) for heavy press work. The 70 mm stroke is well inside the 250 mm maximum standard stroke for this bore, so no made-to-order build is needed. The 20 mm adjust window suits fixtures where the final stop position is tuned on the machine - remember the stop screw only shortens the extend stroke and is not a mid-stroke lock, so a load can still drift if air is lost. Male rod thread (B code) with PT ports, FA flange or LB foot mounting, and the fitted -S magnet ready for CMSE / DMSE switches.
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 ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20SB FAQ
At 0.5 MPa it pushes 1558.6 N and pulls 1458.1 N; at 0.7 MPa those rise to 2182.1 N and 2041.3 N, with a theoretical maximum of 317.9 kgf at 1.0 MPa. The -20 code gives a 20 mm adjustment window: an external stop screw shortens the 70 mm extend stroke by up to 20 mm, so the working range is 50-70 mm. The stop is a mechanical end stop only - it does not hold a load if air pressure is lost. Speed range is 30-500 mm/s and operating pressure is 0.15-1.0 MPa (22-145 psi).
This model carries the optional -S magnet, so CMSE or DMSE reed and solid-state switches can be clipped onto the body slots to signal extend and retract positions. A fixed TPU bumper at each end absorbs end-of-stroke energy. FA flange and LB foot mounts bolt to the ISO 21287 face, and the male rod thread takes I or Y rod knuckles. The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, easing retrofit into tight machinery.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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