Airtac MFCJ Adjustable Mini Cylinder MFCJ25X100-20
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X100-20 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 100mm 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.
- BoreØ25 mm
- Stroke100 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM10×1.25
- 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 MFCJ25X100-20
Trimming the extend stroke by up to 20 mm on site is the core advantage of this double-acting mini cylinder, letting you set an exact 80-100 mm end position without mechanical shims. A needle-variable air cushion at both ends soaks up high-speed end-of-stroke shock for smooth, quiet motion.
Built as a JIS-standard round-body unit with a SUS304 stainless barrel and riveted aluminium covers, the body is deliberately shorter than an ISO 6432 cylinder for the same 25 mm bore and 100 mm stroke, saving valuable mounting length. It pushes with 245.3 N and pulls with 206.1 N at 0.5 MPa, yielding a safe working load of about 147 N or a 12.5 kg vertical lift with a 2:1 margin. The 1/8" air port and M10x1.25 male rod thread simplify integration. Note this SKU lacks the -S magnet, so it cannot accept CMSG, DMSG or EMSG sensors.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X100-20 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X100-20 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 100 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 (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 MFCJ Adjustable Mini Cylinder MFCJ25X100-20
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×100 | 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 MFCJ25X100-20 Is Used
High-Speed Changeover Dials
Perfect for packaging changeovers where the 20 mm extend window lets operators fine-tune the 245.3 N push stroke on the fly while the air cushion absorbs rapid cycling shock.
Light Part Insertion
Ideal for inserting delicate electronic components, using the adjustable 80-100 mm stroke to trial-fit depths without crushing parts during high-speed automated assembly.
Sorter Deflector Arms
Suited for conveyor routing gates that need precise extend positioning and the variable cushion to prevent banging when deflecting lightweight goods at 800 mm/s.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X100-20 the Right Cylinder?
When sizing this adjustable family, compare the real thrust: an MFCJ20 delivers 157 N at 0.5 MPa, this MFCJ25 hits 245.3 N, and the larger MFCJ32 provides 402.2 N. Choose the 25 mm bore when your changeover mechanism needs moderate force plus on-site stroke tuning to dial in the exact 80-100 mm extend. The variable air cushion is essential for high-speed trial fits where end-of-stroke shock would otherwise damage the tooling.
Mounting options include LB foot, FA flange and TC trunnion (there is no SDB or back-cover option on this build). Remember the adjuster and cushion only decelerate the piston; they do not lock or hold the load. If gravity or air loss could cause drift, fit an external rod lock or pilot check valve. Because this specific code has no -S magnet, position sensing is not possible here.
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 MFCJ25X100-20 FAQ
This 25 mm bore cylinder uses a 1/8" air port and an M10x1.25 male rod thread. It generates a push force of 245.3 N and a pull force of 206.1 N at 0.5 MPa; at 0.7 MPa it pushes 343.4 N and pulls 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa. It features a variable air cushion at both ends and operates at speeds of 30-800 mm/s.
No. The external adjuster only shortens the extend stroke by up to 20 mm (usable range 80-100 mm), and the air cushion merely decelerates the piston near the end caps; neither acts as a brake or lock. For position holding you need an external rod lock or pilot check valve. Additionally, this specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG or EMSG sensors.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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