Airtac MARU Stainless Steel Mini Cylinder MARU40X350S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU40X350S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø40mm bore and 350mm 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
- Stroke350 mm
- Port size1/8"
- Acting typeDouble acting + cushion (up mount)
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
About the Airtac MARU Stainless Steel Mini Cylinder MARU40X350S
A 350 mm reach from a 40 mm bore makes the MARU40X350S a long-travel member of AirTAC's MA family: double acting, cushioned with variable air needles at both stroke ends, and carried on its own integrated up-mount front bracket so no separate flange or foot is bought. The body is a riveted round barrel in stainless steel with a hard-chrome plated 16 mm carbon-steel rod - a combination that shrugs off mild corrosion and washdown where painted minis would rust. Ports are 1/8" and the rod thread is M12x1.25.
At 0.5 MPa this bore delivers 628.3 N of push; keep actual work loads near 377 N and you retain a healthy margin, which translates to lifting about 32 kg vertically. The variable cushion absorbs end-of-stroke shock at speeds up to 800 mm/s, protecting the covers when the long stroke is cycled fast. A magnet is fitted as standard, so CMSG, DMSG or EMSG switches mount without any special-order piston. Operating envelope: 0.15-1.0 MPa (22-145 psi), -20 to +70 C, air filtered to 40 um.
Airtac MARU Stainless Steel Mini Cylinder MARU40X350S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU40X350S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 350 mm |
| Acting type | Double acting + cushion (up mount) |
| 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 MARU Stainless Steel Mini Cylinder MARU40X350S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| U | Front-cover mount: U = up (top) mounting. |
| 40 | Bore size in mm. |
| ×350 | Stroke length in mm. |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
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 MARU Stainless Steel Mini Cylinder MARU40X350S Is Used
Bottling line gate lift
Raising a diverter gate on a bottling conveyor: 628.3 N at 0.5 MPa lifts a 4 kg stainless gate fast, and the 350 mm stroke clears full-width PET lane changes.
Bakery tray pusher
Sliding racks of bread trays across a 350 mm transfer on a bun line, with the cushioned stop protecting the push plate at high cycle speeds up to 800 mm/s.
Paint booth damper
Swinging open a spray-booth air damper where washdown humidity rules out painted minis - the stainless barrel and up bracket shrug off the mist.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU40X350S the Right Cylinder?
Compare before you commit: the 32 mm bore version delivers 402.2 N at 0.5 MPa while a 50 mm bore jumps to 981.3 N, so 40 mm sits mid-pack at 628.3 N. A 350 mm unsupported stroke means side loads bend the 16 mm rod quickly - guide the load externally rather than letting the rod carry it. If the machine must hold position when air drops, remember the piston drifts; specify a rod lock for that job. Mounting is integral: the U bracket bolts straight to the machine, and CMSG / DMSG / EMSG switches sense the factory-fitted magnet.
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 MARU Stainless Steel Mini Cylinder MARU40X350S FAQ
At 0.5 MPa the cylinder pushes 628.3 N and pulls 527.8 N; at 0.7 MPa push climbs to 879.6 N, and theoretical maximum force is 128.1 kgf at 1.0 MPa. Supply pressure of 0.15-1.0 MPa (22-145 psi) and a 30-800 mm/s speed band frame those values.
Yes - turn the cushion needle screws in slightly on first commissioning and tune both ends until each stop is quiet. The variable air cushion works at both stroke ends, so a 350 mm fast cycle can land gently instead of hammering the covers.
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 MARU Stainless Steel Mini Cylinder MARU40X350S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.