Airtac MFCJ Adjustable Mini Cylinder MFCJ40X100-50
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X100-50 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 100mm stroke, 1/4" 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.
- BoreØ40 mm
- Stroke100 mm
- Port size1/4"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM14×1.5
- 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 MFCJ40X100-50
Trim the extend stroke by up to 50 mm on site with the AirTAC MFCJ40X100-50, a JIS-standard round-body mini cylinder built for high-speed automation. The riveted SUS304 stainless barrel and aluminium covers form a compact body that is physically shorter than an equivalent ISO 6432 unit, saving valuable mounting length while resisting mild washdown. A needle variable air cushion at both ends soaks up end-of-stroke shock for smooth deceleration.
This double-acting 40 mm bore cylinder uses a 1/4" port and a 16 mm rod with an M14x1.5 male thread. It delivers a robust 628.3 N push force at 0.5 MPa, yielding a safe working load around 377 N or a vertical lift of about 32 kg with a 2:1 margin. Note this SKU lacks the -S magnet, so it cannot accept CMSG, DMSG or EMSG sensors.
Airtac MFCJ Adjustable Mini Cylinder MFCJ40X100-50 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ40X100-50 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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 – 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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 MFCJ40X100-50
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | 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 MFCJ40X100-50 Is Used
Package Diverting
Tune the 50 mm extend window to strike cartons precisely at varying belt speeds, using the variable air cushion to halt the 628.3 N push force without slamming.
Press Fit Trial
Dial in the exact insertion depth during changeovers and let the needle cushion absorb the high-speed end shock when seating bearings on the assembly line.
Pallet Stopper
Adjust the stop position on the fly for mixed pallet sizes while the cushion softens the impact of heavy loads arriving at up to 800 mm/s.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X100-50 the Right Cylinder?
Choose the MFCJ40 over the MFCJ32 when you need extra muscle: the 40 mm bore pushes 628.3 N at 0.5 MPa compared to 402.2 N for the 32 mm version. The external adjuster lets you dial in the exact extend end position within the 50 mm window, ideal for trial fits and high-speed changeovers where the stroke length and end shock both need tuning. Mount via LB foot, FA flange or TC trunnion (no SDB).
Remember the air cushion only decelerates the piston near the end of stroke; it is not a brake. If the machine loses air, the piston will drift, so fit an external rod lock or pilot check valve to hold a suspended load. Because this specific SKU has no magnet, position sensing is impossible without upgrading to the -S variant.
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 MFCJ40X100-50 FAQ
This 40 mm bore cylinder features a 1/4" port and a 16 mm rod. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum of 128.1 kgf at 1.0 MPa.
No, this specific SKU does not include a magnet. To use CMSG, DMSG or EMSG switches you must purchase the -S variant. The 50 mm adjustable window only shortens the extend stroke and the air cushion decelerates the piston; neither function locks the rod in place.
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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.
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Most inquiries answered within 7-8 hours.
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