Airtac MFCJ Adjustable Mini Cylinder MFCJ20X175-30
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X175-30 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 175mm stroke, 1/8" air ports and a SUS304 stainless-steel barrel for mildly corrosive environments. For the same bore and stroke it is shorter than an ISO 6432 cylinder, saving mounting space.
- BoreØ20 mm
- Stroke175 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, 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 MFCJ Adjustable Mini Cylinder MFCJ20X175-30
Dial in your extend end-point exactly where you need it with the AirTAC MFCJ20X175-30, a JIS-standard round-body mini cylinder built from a SUS304 stainless barrel and riveted aluminium covers. An external adjuster lets you shorten the extend stroke by up to 30 mm on site (yielding a 145-175 mm usable extend window), while a needle-set variable air cushion at both ends soaks up high-speed end-of-stroke shock for smooth, quiet motion. This double-acting actuator uses a 1/8" port and an Ø8 mm rod with an M8x1.25 male thread.
Delivering 157 N of push force at 0.5 MPa, it is an ideal fit for lighter automation loads, offering a safe working load of roughly 94 N and lifting about 8 kg vertically with a 2:1 margin. For the same bore and stroke, this compact riveted body is shorter than an ISO 6432 cylinder, saving valuable mounting length. Note that this specific SKU lacks a magnet, so it cannot accept CMSG, DMSG, or EMSG position switches without upgrading to the -S variant.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X175-30 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X175-30 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 175 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 – 800 mm/s |
| Cushion | Variable air cushion, both ends |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MF/MFC (JIS-standard) datasheet. Barrel: SUS304 stainless steel; covers: aluminum alloy (round-body, riveted rolling-packed construction). Thread options: PT (blank) / G / NPT.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 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 MFCJ Adjustable Mini Cylinder MFCJ20X175-30
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×175 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MF-family variants: MF / MFC (double acting ±cushion), MSF / MTF (single acting push / pull), MFD / MFCD (double rod ±cushion), MFJ / MFCJ (adjustable stroke ±cushion). Back covers CA / U / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X175-30 Is Used
Light-Part Trial Fits
Perfect for dialing in a 145-175 mm extend on assembly stations, using the 30 mm adjuster to find the exact contact point for delicate 8 kg components without crashing.
High-Speed Diverting
Handles rapid package routing where the variable air cushion quietly absorbs end-of-stroke shock, protecting the 157 N push mechanism from high-cycle wear.
Lab Automation Jigs
Ideal for compact testing fixtures needing a shorter footprint than ISO 6432, allowing researchers to tune the extend distance on the fly during changeovers.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X175-30 the Right Cylinder?
When sizing this actuator, weigh the MFCJ20X175-30 against the next bore up: the 20 mm bore provides 157 N of push force at 0.5 MPa, whereas the MFCJ25 delivers 245.3 N at the same pressure. Choose the 20 mm bore for compact, lighter-duty high-speed changeovers where shock-sensitive trial fits demand both an adjustable end-point and tunable cushioning. Remember that the air cushion only decelerates the piston near the stroke end—it is not a lock or brake. If your application must hold a load vertically during air loss or when a valve is centred, the piston will drift, so you must add an external rod lock or a pilot-operated check valve.
Mounting options include LB foot, FA flange, and TC trunnion styles (with no SDB or back-cover mount available on this adjustable build). Because this SKU is non-magnetic, skip position sensing entirely unless you specify the -S magnet version for CMSG, DMSG, or EMSG switches.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X175-30 FAQ
This double-acting cylinder features a 1/8" air port and generates 157 N push / 131.9 N pull at 0.5 MPa, and 219.8 N push / 184.7 N pull at 0.7 MPa. The theoretical maximum force is 32 kgf at 1.0 MPa.
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG, or EMSG switches. You would need the -S variant for sensing. The 30 mm adjustable stroke window and needle air cushion function independently of the magnet.
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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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