
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X50UTC is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 50mm 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.
Generating 628.3 N of push force at 0.5 MPa, this double-acting JIS-standard round-body mini cylinder handles heavy-duty actuation within a compact footprint. Because the SUS304 stainless steel barrel and riveted aluminium covers yield a shorter overall body than an equivalent ISO 6432 unit, you save valuable mounting length in tight machinery. The 1/4" port and M14x1.5 male rod thread support robust airflow and attachment for this 40 mm bore.
Fixed TPU bumper pads alongside a front-cover anti-impact pad absorb stroke-end shock, while the piston's two-way oil-retaining seal ensures long-term lubrication. Plan for around 377 N of actual work at 0.5 MPa, which translates to safely lifting about 32 kg vertically with a 2:1 margin. Note that this specific SKU lacks a magnet, so it cannot host CMSG, DMSG, or EMSG sensors without upgrading to an -S variant.
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X50UTC |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| 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.
| 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.
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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.
Uses the 628.3 N push force to knock heavy stamped metal parts out of a die, where the short JIS body fits neatly behind the press tooling.
Leverages the TC trunnion mount to pivot a heavy routing gate on a packaging line, safely managing an effective 32 kg vertical load margin.
Drives a robust mechanical arm to fold thick cardboard flaps on high-speed case sealers, relying on TPU bumpers to absorb rapid cycle impacts.
When sizing this 40 mm bore unit, step down to the MF32 if your task requires only 402.2 N of push at 0.5 MPa, as the MF40 is the largest available bore in the series. For retaining a suspended load during air loss or valve centering, remember that the bumper pads only decelerate the stroke end and do not function as a brake; you must integrate an external rod lock or pilot-operated check valve to prevent drift. This model features a U flat-end back cover and a TC trunnion mount, ideal for pivoting frameworks, though the 50 mm stroke keeps side-load rod-bending stress minimal.
Quick checklist
This 40 mm bore cylinder features a 1/4" port and an M14x1.5 male rod 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, with a theoretical maximum force of 128.1 kgf at 1.0 MPa.
No, because this SKU lacks the internal magnet, it cannot accommodate CMSG, DMSG, or EMSG switches; you would need the -S variant for sensing. Additionally, while the fixed TPU bumper pads soften stroke-end impacts, they do not hold the load if air pressure drops.
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