Airtac MSF Single Acting Mini Cylinder MSF40X70CA
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF40X70CA is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 70mm 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
- Stroke70 mm
- Port size1/4"
- Acting typeSingle acting, push (spring return)
- Rod threadM14×1.5
- CushionFixed TPU bumper pads
About the Airtac MSF Single Acting Mini Cylinder MSF40X70CA
Delivering 535.3 N of push force at 0.5 MPa, this 40 mm bore pneumatic mini cylinder uses air to extend the rod and an internal spring to retract it. Because it is single-acting, you only pipe and valve a single 1/4 inch port, simplifying setup. The quoted force is already net of the return spring, and the unit requires at least 0.2 MPa of operating pressure to overcome that spring. Built as a JIS-standard round-body with a SUS304 stainless barrel and riveted aluminium covers, it is shorter than an ISO 6432 cylinder of the same size, saving valuable mounting length while resisting mild washdown environments.
This specific configuration features a 70 mm stroke and a CA rear pivot cover. It relies on fixed TPU bumper pads for end-of-stroke deceleration rather than an adjustable cushion. For practical sizing, expect a safe working load around 321 N, or a vertical lift capacity of about 27.3 kg with a 2:1 safety margin. Note that this SKU lacks a magnet, so it cannot accept CMSG, DMSG, or EMSG position switches without upgrading to the -S variant.
Airtac MSF Single Acting Mini Cylinder MSF40X70CA Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF40X70CA |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 70 mm |
| Acting type | Single acting, push (spring return) |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 800 mm/s |
| Cushion | Fixed TPU bumper pads |
| Max standard stroke | Up to 150 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 (spring return) |
|---|---|
| 0.5 MPa | 535.3 N |
| 0.7 MPa | 786.5 N |
Single-acting push: air extends the rod; the return spring retracts it. Forces already net the spring; minimum working pressure is 0.2 MPa.
Model Code: Airtac MSF Single Acting Mini Cylinder MSF40X70CA
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×70 | 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 MSF Single Acting Mini Cylinder MSF40X70CA Is Used
Heavy Part Ejection
Uses the 535.3 N push force to positively eject dense machined metal components from a fixture, with the spring ensuring the rod retracts clear when air is removed.
Package Diverting Gate
Extends a 70 mm stroke to deflect heavy cartons on a line, relying on the single 1/4 inch port for fast actuation and simple valve wiring.
Pallet Stop Mechanism
Leverages the CA pivot mount to arrest pallet movement, safely holding loads up to 27.3 kg vertically before releasing them upon spring retraction.
Is the Airtac MSF Single Acting Mini Cylinder MSF40X70CA the Right Cylinder?
When sizing this 40 mm bore unit, verify your load against the 535.3 N push output at 0.5 MPa. If your application requires less force, step down to the MSF32, which provides 323.3 N at the same pressure; since 40 mm is the largest available bore in this series, heavier loads will require a different cylinder family. Choose this single-acting spring-return model for clamping, ejecting, or gating tasks where the mechanism must fail safely to the retracted position on air loss. Ensure your supply meets the 0.2 MPa minimum floor to beat the return spring, and select your mounting hardware from LB foot, FA flange, SDB pivot, or TC trunnion options to complement the built-in CA back cover.
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 0.2 – 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 MSF Single Acting Mini Cylinder MSF40X70CA FAQ
This 40 mm bore cylinder provides a net push force of 535.3 N at 0.5 MPa and 786.5 N at 0.7 MPa. It requires an operating pressure between 0.2 and 1.0 MPa, with the 0.2 MPa minimum necessary to overcome the internal return spring.
No, this specific SKU does not include a magnet, so it cannot support CMSG, DMSG, or EMSG switches. You must select the -S magnet variant for position sensing. Additionally, remember the spring only returns the rod to its retracted rest position on air loss; it will not hold a mid-stroke load.
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