Airtac MARU Stainless Steel Mini Cylinder MARU20X450S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU20X450S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø20mm bore and 450mm 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.
- BoreØ20 mm
- Stroke450 mm
- Port size1/8"
- Acting typeDouble acting + cushion (up mount)
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
- 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 MARU Stainless Steel Mini Cylinder MARU20X450S
Of the standard MAR strokes this one sits near the ceiling: 450 mm on a 20 mm bore, still pushing 157 N and pulling 131.9 N at 0.5 MPa. The MARU20X450S is double acting with variable air cushions at both ends, and its front cover integrates the U-type top mount - one riveted stainless assembly instead of a cylinder plus loose brackets.
The magnet is standard, letting CMSG / DMSG / EMSG switches track the rod anywhere along 450 mm of travel. Operating window: 0.15-1.0 MPa (22-145 psi), -20 to +70 C, speed 30-800 mm/s.
Airtac MARU Stainless Steel Mini Cylinder MARU20X450S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU20X450S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 450 mm |
| Acting type | Double acting + cushion (up mount) |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MARU20X450S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| U | Front-cover mount: U = up (top) mounting. |
| 20 | Bore size in mm. |
| ×450 | 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 (double rod, 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 MARU20X450S Is Used
Reject pusher on a checkweigher line
Underweight packs get flicked off the belt with 157 N at 0.5 MPa, and the standard magnet plus a CMSG switch give the PLC a reject-confirmed signal.
Gate on a dairy CIP rinse station
450 mm slides a rinse gate across a tank throat, and the stainless round barrel with chrome-plated rod stands up to daily caustic washdown.
Rotating-arm feeder on a CNC bar magazine
The long stroke indexes the arm between bar-feed and stock positions, with the cushion damping the 450 mm swing at up to 800 mm/s.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU20X450S the Right Cylinder?
At 450 mm you are close to the 500 mm standard-stroke ceiling for this bore, and anything longer becomes a made-to-order build. Guide the load externally over such a span - the 8 mm hard-chrome rod is not meant to carry side loads - and pick an I or Y knuckle if the trajectory is not perfectly linear. If 157 N at 0.5 MPa is marginal, the 25 mm bore (245.3 N push / 206.1 N pull) is the nearest step up. Mounting is self-contained in the U-type bracket and the standard magnet accepts CMSG / DMSG / EMSG switches; just remember the rod floats when pressure is gone, so a rod lock - not this cylinder - holds a parked load.
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 MARU20X450S FAQ
Yes: 157 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, and 32 kgf theoretical maximum at 1.0 MPa. Bore 20 mm, 8 mm rod, M8x1.25 male thread, 1/8" ports.
The front cover carries an integrated U-type top bracket, so the body bolts directly to your frame - no separate foot or flange accessory is used on MAR cylinders, and I or Y knuckles can still be fitted to the rod if the motion needs it.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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