Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X120-10S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X120-10S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 120mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke120 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM8×1.25
- CushionFixed anti-impact bumper pads
- 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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X120-10S
Fine positioning is the story of the -10 version: the external stop screw trims the 120 mm extend stroke inside a tight 10 mm window, ideal when the fixture dimension is known but not guaranteed by the print. The bore 20 piston develops 157 N at 0.5 MPa; treat about 94 N as the practical effort and it will never run out of breath.
Construction suits wet or dusty plants: a stainless-steel tube rolled tight to the aluminium covers, a 20 um hard-chrome finish on the carbon-steel rod, and heterogeneous piston seals that store their own grease. An FA flange or LB foot carries the body, the rod thread is M8x1.25, air arrives via a 1/8" port, and the standard magnet lets a CMSG switch report stroke end without touching the piston.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X120-10S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X120-10S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 120 mm |
| Acting type | Double acting, adjustable stroke |
| 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 | Fixed anti-impact bumper pads |
| Max standard stroke | Up to 300 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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X120-10S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×120 | Stroke length in mm. |
| -10 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X120-10S Is Used
PCB test press probe
Low-force seating of pogo-pin test heads; the fine 10 mm window prevents overtravel into the board during fixture changeovers.
Battery tray locators
Pops up locating pins under forklift-served battery trays; the stainless barrel tolerates washdown in battery-change areas.
Carton flap tucker
Folds glue flaps on a 120 mm pitch packaging station; fixed bumpers keep the cycle quiet at around 500 mm/s.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X120-10S the Right Cylinder?
Right-size the bore: 16 mm gives 100.5 N at 0.5 MPa and 25 mm gives 245.3 N; this 20 mm model sits between at 157 N, which suits jigs and light clamping at 120 mm reach. Long strokes multiply rod bending, so keep the 8 mm rod in pure push-pull and guide external loads separately.
Mount choices are FA flange or LB foot; rod-end I or Y knuckles attach the fixture. If the process needs end-of-travel confirmation, the standard magnet drives CMSG / DMSG / EMSG switches with no retrofit. The 10 mm stop window is a hard mechanical limit on extension - it sets position, it never arrests a falling load when air fails.
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 Bumper models: keep speed within the rated range.
- check Installation by qualified personnel per AirTAC docs.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X120-10S FAQ
Bore 20 delivers 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, with a theoretical ceiling of 32.0 kgf at 1.0 MPa. Working pressure is 0.15-1.0 MPa (22-145 psi); speed 30-800 mm/s.
The rolled stainless tube plus the 20 um hard-chrome plating on the carbon-steel rod shrug off coolant mist, washdown splash and outdoor humidity where painted bodies blister. Add the grease-retaining two-way piston seal and fixed anti-impact bumper pads and the cylinder suits long, quiet duty in wet plants.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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