Airtac MFCJ Adjustable Mini Cylinder MFCJ40X100-100S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X100-100S 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 MFCJ40X100-100S
Dial in your extend end-point on the fly with the AirTAC MFCJ40X100-100S, a JIS-standard round-body mini cylinder built from a SUS304 stainless barrel and riveted aluminium covers. An external adjuster lets you shorten the forward stroke by up to 100 mm on-site, while the needle-set variable air cushion at both ends soaks up high-speed end-of-travel shock for smooth, quiet motion.
Driven by a 16 mm rod through a 1/4" port, this double-acting 40 mm bore generates 628.3 N of push force at 0.5 MPa (879.6 N at 0.7 MPa). That translates to a safe working load of roughly 377 N, allowing you to lift about 32 kg vertically with a 2:1 safety margin. The included -S magnet enables CMSG, DMSG, and EMSG position sensing, and the compact JIS body is shorter than a comparable ISO 6432 unit, saving valuable mounting length.
Airtac MFCJ Adjustable Mini Cylinder MFCJ40X100-100S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ40X100-100S |
|---|---|
| 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 MFCJ40X100-100S
| 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 MFCJ40X100-100S Is Used
High-Speed Forming Press
Handles the 628.3 N push force needed to drive small stamping dies, using the 100 mm adjuster to fine-tune the crash position and the air cushion to absorb rapid deceleration.
Heavy Diverter Gate
Moves heavier product flow on a packaging line, relying on the M14x1.5 male rod thread for secure linkage and the needle cushion to prevent end-stroke slamming at high speeds.
Vertical Lift Fixture
Lifts roughly 32 kg loads with a 2:1 safety margin, using the -S magnet for DMSG sensors to confirm upper position while the SUS304 barrel resists washdown moisture.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X100-100S the Right Cylinder?
When sizing between the two available bores, weigh the 40 mm MFCJ40 against the 32 mm MFCJ32. This MFCJ40 delivers a robust 628.3 N push at 0.5 MPa, easily out-muscling the 402.2 N of the MFCJ32 for heavier tooling or high-speed changeovers where shock tuning is critical. Both share the 1/4" port and 30-800 mm/s speed range.
Remember that the adjustable stroke mechanism and air cushion only decelerate the piston near the end of travel—they do not function as a lock or brake. If your application must hold a load vertically during air loss or valve centering, add an external rod lock or pilot-operated check valve. For mounting, choose LB foot, FA flange, or TC trunnion brackets (SDB and back-cover mounts are unavailable on this build).
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 MFCJ40X100-100S FAQ
This 40 mm bore double-acting cylinder uses 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. The variable air cushion only decelerates the piston near the end of its stroke, and the external adjuster merely shortens the extend end-point by up to 100 mm. Neither acts as a brake; use an external rod lock or pilot check valve to hold loads. The -S magnet enables CMSG, DMSG, and EMSG sensors for position feedback.
Authorized Export Seller
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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