Airtac MARU Stainless Steel Mini Cylinder MARU20X170S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU20X170S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø20mm bore and 170mm 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
- Stroke170 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 MARU20X170S
With 170 mm of travel, the MARU20X170S stretches the compact 20 mm MAR format across mid-length moves. The round stainless barrel is rolled shut against aluminium covers - no tie rods to loosen - while the 8 mm hard-chrome rod shrugs off splash and mild washdown better than painted mini cylinders. Double acting with a variable air cushion at each end, it turns 0.5 MPa air into 157 N of push and 131.9 N of pull.
Match it to real loads by working from about 94 N of sustained effort (roughly 60% of the 0.5 MPa rating); that corresponds to raising close to 8 kg straight up with a 2:1 safety factor. The built-in magnet works with CMSG / DMSG / EMSG switches for position feedback, and the top bracket integrates the mounting - no separate flange or foot to buy. Operating window: 0.15-1.0 MPa (22-145 psi), 30-800 mm/s.
Airtac MARU Stainless Steel Mini Cylinder MARU20X170S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU20X170S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 170 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 MARU20X170S
| 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. |
| ×170 | 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 MARU20X170S Is Used
Biscuit-line reject pusher
Nudging misprinted cartons off a bakery conveyor, where 94 N of working effort is ample for sub-kilogram packs.
Inspection camera lift
Raising an inspection camera head 170 mm between two stations on an electronics test fixture.
Guard-door latch actuator
Sliding an interlocked latch on a small CNC enclosure, the stainless barrel resisting coolant mist year after year.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU20X170S the Right Cylinder?
For the MAR range, 20 mm is the smallest bore available, so if 157 N at 0.5 MPa leaves no headroom move to the 25 mm (245 N) or 32 mm (402 N) size. The rod is free to move if supply air fails - the cushion only softens travel ends and is not a brake - so specify a rod-lock solution for suspended loads. The 8 mm rod takes I or Y knuckles (M8x1.25) and the 1/8" ports sit on both covers; the switch magnet comes standard.
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 MARU20X170S FAQ
Push is 157 N and pull 131.9 N at 0.5 MPa; at 0.7 MPa expect 219.8 N and 184.7 N. The theoretical maximum at 1.0 MPa is 32 kgf. It runs on 0.15-1.0 MPa (22-145 psi) filtered air at 30-800 mm/s, with a 1/8" port on each end cover.
The U-version bracket is part of the front cover itself, so the cylinder screws straight onto a machine plate without ordering a separate flange or foot block. That keeps the 170 mm body short, makes cylinder swaps repeatable, and leaves the standard magnet free for CMSG or DMSG switch pickup along the barrel.
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