Airtac MARU Stainless Steel Mini Cylinder MARU20X45S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU20X45S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø20mm bore and 45mm 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
- Stroke45 mm
- Port size1/8"
- Acting typeDouble acting + cushion (up mount)
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MARU Stainless Steel Mini Cylinder MARU20X45S
Within AirTAC's MAR range, the U in MARU20X45S means the mounting bracket faces upward and is rolled into the front cover itself - no separate flange or foot to buy. The cylinder is double acting with a variable air cushion at each end, and its 20 mm bore delivers 157.0 N on extend and 131.9 N on retract at 0.5 MPa, climbing to 219.8 N and 184.7 N at 0.7 MPa.
Plan on roughly 94 N of real working effort at 0.5 MPa, or about 8 kg of vertical lift with a 2:1 margin. The riveted stainless barrel and hard-chromed 8 mm rod shrug off splash and mild washdown that would pit a painted mini, and the built-in magnet - standard on every MA cylinder - reads through CMSG, DMSG and EMSG switches out of the box.
Airtac MARU Stainless Steel Mini Cylinder MARU20X45S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU20X45S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 45 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 MARU20X45S
| 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. |
| ×45 | 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 MARU20X45S Is Used
Filling-line reject gate
A short 45 mm kick with about 94 N of usable force tips off-spec vials off a pharmaceutical conveyor, while the stainless barrel copes with drip trays and wipe-downs.
Chuck-open confirm switch
On a small turning fixture, the standard piston magnet drives a DMSG switch to prove the clamp has retracted before the spindle is allowed to restart.
Carton flap tucker
The brief 45 mm travel tucks the end flap of a small pharmaceutical carton under the tuck wheel without crushing the board.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU20X45S the Right Cylinder?
At 20 mm this is the smallest bore MAR makes; when 157.0 N at 0.5 MPa runs thin for the job, the same up-mount family steps to 245.3 N at 25 mm bore or 402.2 N at 32 mm. Ports are 1/8" and the rod thread is M8x1.25, with running speed 30-800 mm/s across 0.15-1.0 MPa (22-145 psi). The MAR holds nothing on air loss - the cushions only pad the stroke ends - so add a rod lock where a dropped position is unacceptable. The piston magnet is already fitted, so order your CMSG or DMSG switch alongside.
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 MARU20X45S FAQ
At 0.5 MPa it pushes with 157.0 N and pulls with 131.9 N; at 0.7 MPa those rise to 219.8 N and 184.7 N, with a theoretical maximum of 32 kgf for the 20 mm bore at 1.0 MPa. Ports are 1/8", the rod thread is M8x1.25, and the working envelope is 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s.
MARU models carry their mounting bracket integrated into the front cover - the U version faces upward for bolting to a machine plate from below. There is no separate flange or foot to order, and I or Y rod knuckles still fit the M8x1.25 rod thread when the load needs a swivel.
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 MARU20X45S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.