Airtac MFJ Adjustable Mini Cylinder MFJ40X160-50S
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ40X160-50S is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø40mm bore and 160mm 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
- Stroke160 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 MFJ40X160-50S
Trimming the extend stroke by up to 50 mm on site, this double-acting JIS-standard round-body mini cylinder lets you dial in the exact end position without buying a new unit. The 160 mm base stroke yields a usable extend window of 110 to 160 mm, while the SUS304 stainless steel barrel and riveted aluminium covers keep the overall body shorter than an ISO 6432 unit of the same bore. The integrated -S piston magnet supports CMSG, DMSG, and EMSG switches for precise end-of-stroke confirmation.
Driven by a 40 mm bore and a 1/4 inch port, it delivers 628.3 N of push force at 0.5 MPa, translating to a safe working load of roughly 377 N or a vertical lift of about 32 kg with a 2:1 margin. Fixed TPU bumper pads absorb impact at the stroke ends across a 30-800 mm/s speed range. Note that the external adjuster sets the end position but does not function as a mid-stroke lock; the piston will drift if air pressure is lost.
Airtac MFJ Adjustable Mini Cylinder MFJ40X160-50S Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ40X160-50S |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 160 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 MFJ40X160-50S
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×160 | 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 MFJ40X160-50S Is Used
Changeover Stations
Fine-tune the extend position up to 50 mm during product format changes, utilizing the 628.3 N push force to shift medium-weight tooling without requiring custom spacers.
Prototype Set-up Rigs
Dial in the exact 110 to 160 mm extend distance during initial commissioning, safely lifting about 32 kg vertically while confirming travel with CMSG sensors.
Variable-Position Stops
Act as an adjustable physical stop for incoming parts on a conveyor, using the on-site adjuster to alter the blocking distance as production runs dictate.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ40X160-50S the Right Cylinder?
When sizing this series, compare the two available bores directly: the MFJ40 provides 628.3 N of push force at 0.5 MPa, whereas the smaller MFJ32 offers 402.2 N. Choose the 40 mm bore when moving heavier fixtures or overcoming significant friction. The 50 mm adjustable window is particularly useful for trial fits and line changeovers where the exact stroke distance is not yet finalised. Mounting options include LB foot, FA flange, and TC trunnion (no SDB), and because this SKU includes the -S magnet, you can directly fit CMSG, DMSG, or EMSG sensors. For applications requiring the load to be held during air loss, add an external rod lock or pilot check valve, as the bumper pads only decelerate the stroke and cannot hold the piston in place.
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 MFJ40X160-50S FAQ
This 40 mm bore cylinder features a 1/4 inch port and a 16 mm piston rod with an M14x1.5 male thread. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, increasing to 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external adjuster shortens the extend stroke by up to 50 mm on site, giving a usable extend range of 110 to 160 mm; the retract stroke remains full. It uses fixed TPU bumper pads to decelerate at the ends rather than an adjustable air cushion. Because it includes the -S magnet, it supports CMSG, DMSG, and EMSG switches.
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.
Request a Quote for Airtac MFJ Adjustable Mini Cylinder MFJ40X160-50S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.