Airtac MFCJ Adjustable Mini Cylinder MFCJ20X45-10S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X45-10S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 45mm 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.
- BoreØ20 mm
- Stroke45 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM8×1.25
- 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 MFCJ20X45-10S
Dial in exact end positions and absorb high-speed shock with the AirTAC MFCJ20X45-10S, a JIS-standard round-body mini cylinder. The external adjuster shortens the extend stroke by up to 10 mm, giving a usable 35-45 mm window, while needle-set variable air cushions at both ends soak up end-of-stroke impact. An integrated magnet (-S) enables position sensing.
Built with a SUS304 stainless barrel and riveted aluminium covers, this double-acting unit runs at 30-800 mm/s on a 1/8" port. It delivers 157 N push at 0.5 MPa, offering a safe working load of roughly 94 N. The compact riveted body is shorter than an ISO 6432 cylinder for the same stroke, saving valuable machine space.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X45-10S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X45-10S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 45 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MFCJ20X45-10S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×45 | 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 MFCJ20X45-10S Is Used
Light Part Ejection
Tune the 10 mm extend window to strike plastic parts precisely, using the variable cushion to halt the 157 N push force smoothly without bounce.
High-Speed Diverting
Divert small packages at speed; the needle air cushion absorbs end-of-stroke shock while the -S magnet confirms divert position to the controller.
Lab Test Actuators
Perfect for trial fits where a 94 N safe working load is needed; shorten the stroke on-site during changeovers without swapping hardware.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X45-10S the Right Cylinder?
When sizing this 20 mm bore against the MFCJ25, compare real outputs: this model pushes 157 N at 0.5 MPa, while the MFCJ25 yields 245.3 N. Choose the 20 mm bore for lighter, high-speed changeovers where exact stroke tuning and end-deceleration are critical. Both feature variable air cushions to tame shock.
The adjuster sets the extend end position but does not lock mid-stroke; the piston drifts on air loss, so add an external rod lock for suspended loads. Mount via LB foot, FA flange, or TC trunnion (no SDB). The -S magnet supports CMSG, DMSG, and EMSG switches for precise end-of-stroke feedback.
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 MFCJ20X45-10S FAQ
This 20 mm bore cylinder uses a 1/8" port. It generates 157 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, with a theoretical max of 32 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 10 mm (usable 35-45 mm). Variable air cushions at both ends decelerate the piston near stroke end for quiet motion. The -S magnet allows CMSG/DMSG/EMSG sensors to be fitted.
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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