Airtac MFCJ Adjustable Mini Cylinder MFCJ40X150-20
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X150-20 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 150mm 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
- Stroke150 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 MFCJ40X150-20
Dial in exact end positions on-site with this 40 mm bore, 150 mm stroke double-acting cylinder. An external adjuster shortens the extend stroke by up to 20 mm (usable range 130-150 mm), while a needle-set variable air cushion at both ends absorbs high-speed shock. The JIS-standard riveted SUS304 stainless round body is shorter than an ISO 6432 cylinder for the same stroke, saving valuable machine space and resisting mild washdown.
Operating at 0.15-1.0 MPa, this bore delivers 628.3 N push and 527.8 N pull at 0.5 MPa. That translates to a safe working load of roughly 377 N, or lifting about 32 kg vertically with a 2:1 margin. It uses a 1/4" port and a Ø16 mm rod with an M14x1.5 male thread. Note this SKU lacks the -S magnet, so it cannot accept CMSG/DMSG/EMSG sensors.
Airtac MFCJ Adjustable Mini Cylinder MFCJ40X150-20 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ40X150-20 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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 MFCJ40X150-20
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×150 | 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 MFCJ40X150-20 Is Used
High-Speed Diverters
Tune the 20 mm extend window to precisely strike passing packages without rebound, relying on the variable air cushion to halt the 628.3 N push force smoothly.
Trial-Fit Assembly
Perfect for prototype stations needing 130-150 mm extension adjustments; dial in the exact contact point while the cushion absorbs high-speed impacts.
Vertical Lift Stops
Lifts about 32 kg vertically; adjust the needle cushion to prevent slamming at the top of the stroke, though an external check valve is required for safety holding.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X150-20 the Right Cylinder?
Choose the MFCJ40 over the MFCJ32 when you need extra force: the 40 mm bore pushes 628.3 N at 0.5 MPa versus 402.2 N for the 32 mm. This larger bore is ideal for high-speed changeovers where both the stroke endpoint and end-of-stroke shock need on-site tuning. The variable air cushion only decelerates the piston near the end caps; it does not hold position. If air loss occurs, the piston drifts, so add an external rod lock or pilot check valve for suspended loads.
Mounting options include LB foot, FA flange, and TC trunnion (no SDB). Because this specific SKU has no -S magnet, position sensing is not possible without switching to the magnet-equipped variant. Speeds run 30-800 mm/s.
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 MFCJ40X150-20 FAQ
This 40 mm bore cylinder uses a 1/4" port. At 0.5 MPa it pushes 628.3 N and pulls 527.8 N. At 0.7 MPa it pushes 879.6 N and pulls 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
This specific SKU lacks the -S magnet, so it cannot accept CMSG/DMSG/EMSG sensors. The external adjuster shortens the extend stroke by up to 20 mm (usable range 130-150 mm). The variable air cushion at both ends decelerates the piston near stroke end but does not lock or hold the load.
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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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