Airtac MFJ Adjustable Mini Cylinder MFJ40X200-100
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ40X200-100 is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø40mm bore and 200mm 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
- Stroke200 mm
- Port size1/4"
- Acting typeDouble acting, adjustable stroke
- Rod threadM14×1.5
- CushionFixed TPU bumper pads
- 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 MFJ Adjustable Mini Cylinder MFJ40X200-100
Trimming the extend end by up to 100 mm on site, this MFJ40X200-100 mini cylinder lets you set a usable forward stroke of 100 to 200 mm without buying a new unit. The 40 mm bore delivers 628.3 N of push force at 0.5 MPa, yielding a safe working load around 377 N or a 32 kg vertical lift with a 2:1 margin. Its JIS-standard round body uses a SUS304 stainless barrel and riveted aluminium covers, measuring shorter than an ISO 6432 cylinder for the same stroke to save mounting length.
Air enters via a 1/4" port to drive the 16 mm rod, while fixed TPU bumper pads absorb end-of-travel impacts across the 30-800 mm/s speed range. This specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG or EMSG sensors. The external adjuster fine-tunes the extend position but does not function as a mid-stroke lock; the piston drifts on air loss, so add an external rod lock or pilot check valve to hold a suspended load.
Airtac MFJ Adjustable Mini Cylinder MFJ40X200-100 Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ40X200-100 |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 200 mm |
| Acting type | Double acting, adjustable stroke |
| 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 | Fixed TPU bumper pads |
| 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 MFJ Adjustable Mini Cylinder MFJ40X200-100
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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 MFJ Adjustable Mini Cylinder MFJ40X200-100 Is Used
Changeover Stations
Dial in the 100 to 200 mm extend position during product line changeovers, using the adjuster to set new end stops without swapping hardware.
Trial Fit Rigs
Leverage the 628.3 N push force to seat components while fine-tuning the forward travel by up to 100 mm to find the exact contact point.
Variable Position Stops
Act as an adjustable physical stop for incoming parts, shortening the extend stroke on the fly to accommodate different package sizes.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ40X200-100 the Right Cylinder?
Choose the MFJ40 when your application needs the higher 628.3 N push force at 0.5 MPa, rather than the 402.2 N available from the MFJ32. The 100 mm adjustment window is ideal for trial fits and line changeovers where the exact extend position is not finalised, letting you dial in the end point within a 100 to 200 mm range.
Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover). Because this non-magnet version cannot host a sensor, select an -S variant if your control system requires CMSG, DMSG or EMSG switches. Remember that the fixed TPU bumpers only decelerate the stroke end, so never rely on them as a braking mechanism.
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 MFJ Adjustable Mini Cylinder MFJ40X200-100 FAQ
This 40 mm bore cylinder has 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 max of 128.1 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 100 mm on site, giving a usable forward range of 100 to 200 mm. Fixed TPU bumper pads decelerate the stroke end, and since this SKU lacks the -S magnet, it cannot accept position sensors.
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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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