Airtac ACE Compact Cylinder ACE25X120SB
The AirTAC Airtac ACE Compact Cylinder ACE25X120SB is a genuine double acting ISO 21287 compact air cylinder with a Ø25mm bore and 120mm 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.
- BoreØ25 mm
- Stroke120 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM6×1.0
- 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 ACE Compact Cylinder ACE25X120SB
This AirTAC ACE25X120SB is a double acting compact cylinder that extends and retracts its 10 mm rod with air pressure on both strokes. With a 25 mm bore it delivers 245.4 N of push force and 206.2 N of pull force at 0.5 MPa, so it suits light assembly and clamping tasks where space is tight.
The ISO 21287 body is about 50% shorter than an ISO 15552 profile cylinder, letting it fit inside machine guards and compact jigs. The S code means the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches can be mounted for position sensing. As a practical rule, plan for about 15 kg of safe working load at 0.5 MPa, which is roughly 0.6 times the rated push force.
Airtac ACE Compact Cylinder ACE25X120SB Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE25X120SB |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø25 mm |
| Stroke | 120 mm |
| Acting type | Double acting |
| 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 150 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 (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac ACE Compact Cylinder ACE25X120SB
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×120 | Stroke length in mm. |
| 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 ACE Compact Cylinder ACE25X120SB Is Used
Compact Jig Clamping
Clamp small parts in a CNC fixture where the short ISO 21287 body fits under the workholding plate, using the 245.4 N push force to hold components firmly during drilling.
Light Conveyor Stop
Actuate a stop pin on a packaging conveyor to divert lightweight boxes, with the 120 mm stroke providing enough reach to block or release products at speeds up to 500 mm/s.
Automated Test Probe
Drive a spring-loaded test probe in an electronics assembly line, using the 206.2 N pull force to retract the probe after contact and the magnet to confirm position with a CMSE switch.
Is the Airtac ACE Compact Cylinder ACE25X120SB the Right Cylinder?
For a lighter duty, the ACE20X120SB offers 157.1 N push at 0.5 MPa, while stepping up to the ACE32X120SB gives 402.1 N push at the same pressure. The 120 mm stroke is within the 150 mm maximum standard stroke for this bore, so no custom order is needed. The male rod thread (B code) simplifies mounting with rod clevis or knuckle accessories, and the M5x0.8 port accepts standard fittings. Since the magnet is fitted, pair it with a CMSE or DMSE switch for reliable end-of-stroke detection.
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 ACE Compact Cylinder ACE25X120SB FAQ
At 0.5 MPa, push force is 245.4 N and pull force is 206.2 N. At 0.7 MPa, push is 343.6 N and pull is 288.6 N. The theoretical maximum force at 1.0 MPa is 50.1 kgf. Operating pressure range is 0.15-1.0 MPa (22-145 psi).
Yes, the S code means the optional -S magnet is fitted, so you can mount CMSE or DMSE switches for position sensing. The ISO 21287 body is about 50% shorter than an ISO 15552 profile cylinder, making it ideal for tight spaces. It has a fixed TPU bumper at both ends to absorb impact, not an adjustable cushion.
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