Airtac MAC Stainless Steel Mini Air Cylinder MAC40X280SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X280SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 280mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
- BoreØ40 mm
- Stroke280 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X280SU
Flat-ended and forceful: the MAC40X280SU runs a 280 mm stroke on a 40 mm round body, pushing 628.3 N at 0.5 MPa and 879.6 N at 0.7 MPa. Double-acting by design, it uses a variable air cushion at both ends that you tune with the needle screws - back them off at first run, then close gradually until the load lands quietly. In practice, treat about 377 N at 0.5 MPa as your working force for sizing.
The U-style flat back cover sits flush against plates and brackets, so mounting to a machine wall takes no adapter. Inside, a stainless-steel barrel and hard-chrome 16 mm rod resist the condensation and mild chemicals that rust painted mini cylinders within a season. Ports are 1/8" and the rod thread is M12x1.25; speed range is 30-800 mm/s. The magnet is fitted as standard, ready for CMSG, DMSG or EMSG switches.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X280SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X280SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 280 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
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 MAC Stainless Steel Mini Air Cylinder MAC40X280SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×280 | Stroke length in mm. |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X280SU Is Used
Case pusher on a warehouse erecter
280 mm extends across the case magazine while 628 N seats blanks into the ereter, with cushions absorbing each cycle.
Sample lift in lab automation
The 32 kg vertical-lift equivalent at a 2:1 margin handles tray stacks, and the magnet provides plate-position feedback via CMSG switches.
Bench-mounted riveting assist
The flush flat-end cover bolts straight to the bench plate, and 879.6 N at 0.7 MPa drives small rivets and eyelets repeatably.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X280SU the Right Cylinder?
For lighter duty a MAC32 delivers 402 N push at 0.5 MPa; heavier loads call for the MAC50 and its 981 N. Long 280 mm strokes amplify side loads, so guide the load in slides or fit I or Y rod knuckles to keep bending off the rod. Where the position must hold with the valve centred, the plain MAC will drift on air loss - a rod lock or pilot check valve solves it. Foot (LB) and flange (FA) mounts bolt on without machining.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
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 On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X280SU FAQ
Push 628.3 N and pull 527.8 N at 0.5 MPa; push 879.6 N and pull 738.9 N at 0.7 MPa; theoretical maximum 128.1 kgf at 1.0 MPa. Stroke is 280 mm on a 40 mm bore with a 16 mm rod, 1/8" ports and M12x1.25 rod thread. Supply air 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-800 mm/s.
Needle screws at each end bleed trapped air to slow the piston before it lands. On commissioning, open both screws fully, then close them gradually until end-of-stroke impact disappears. That lets you move 628 N loads faster than an uncushioned mini could survive, and it protects the rolled aluminium covers over millions of cycles.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MAC Stainless Steel Mini Air Cylinder MAC40X280SU
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.