Airtac MFCJ Adjustable Mini Cylinder MFCJ20X175-40
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X175-40 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 MFCJ20X175-40
Dial in exact extend lengths on-site with the AirTAC MFCJ20X175-40, a JIS-standard round-body mini cylinder featuring a 40mm adjustable stroke window. The external adjuster shortens the extend end from 175mm down to 135mm, while the retract stroke remains full length. A needle variable air cushion at both ends soaks up high-speed end-of-stroke shock for smooth deceleration.
Built with a SUS304 stainless steel barrel and riveted aluminium covers, this double-acting unit delivers 157N of push force at 0.5MPa through a 1/8" port. It yields a safe working load of roughly 94N, lifting about 8kg vertically with a 2:1 margin. For the same bore and stroke, this compact MF body is shorter than an ISO 6432 cylinder, saving valuable mounting length. Note this SKU lacks a magnet and cannot take a sensor.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X175-40 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X175-40 |
|---|---|
| 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 MFCJ20X175-40
| 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 MFCJ20X175-40 Is Used
Adjustable Pusher Stroke
Fine-tune the extend distance up to 40mm on packaging pushers to accommodate carton size changes without swapping hardware.
High-Speed Dampening
Leverage the variable air cushion to absorb shock during rapid 157N actuation on light transfer lines, ensuring smooth stops.
Trial Fit Positioning
Dial in the exact 135 to 175mm extend point during lab equipment prototyping, finding the optimal reach before locking the adjuster.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X175-40 the Right Cylinder?
Weigh the MFCJ20X175-40 against the larger MFCJ25, which steps up to 245.3N of push force at 0.5MPa compared to 157N here. Choose this 20mm bore for lighter, high-speed changeovers where exact positioning and end-of-stroke shock both need tuning. The 40mm adjust window is ideal for trial fits where the final extend point is unknown.
Remember the cushion only decelerates the piston near stroke end; it is not a lock or brake. The piston will drift on air loss, so add an external rod lock or pilot check valve for held loads. Mount via LB foot, FA flange, or TC trunnion. Because this specific SKU has no -S magnet, it cannot accept 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 MFCJ20X175-40 FAQ
This 20mm bore cylinder uses a 1/8" port. It generates 157N push and 131.9N pull at 0.5MPa, 219.8N push and 184.7N pull at 0.7MPa, with a theoretical max of 32kgf at 1.0MPa.
No, this specific SKU lacks the -S magnet option and cannot accept CMSG, DMSG, or EMSG switches. The external adjuster shortens the extend stroke by up to 40mm but does not lock mid-stroke.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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