Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X160-40S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X160-40S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 160mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke160 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 MAJ20X160-40S
Need one cylinder to hit several positions between 120 and 160 mm? The MAJ20X160-40S trims its extend stroke by up to 40 mm via an external stop screw, staying double-acting throughout. At 0.5 MPa this 20 mm bore pushes 157 N and retracts with 131.9 N; at 0.7 MPa the push climbs to 219.8 N. A stainless-steel barrel with a hard-chrome 8 mm rod resists washdown and outdoor damp better than painted mini bodies.
The rolling-packed body - stainless barrel, aluminium covers, riveted - stays slim in tight frames. Fixed anti-impact bumpers soften the ends of travel (deceleration only, no adjustable cushion; that is the MAC family). For vertical lifts, 157 N translates to about 16 kgf, so with a 2:1 margin you can plan to lift around 8 kg per cylinder. The standard-fit magnet picks up CMSG / DMSG / EMSG switches with no special piston.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X160-40S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X160-40S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 160 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 MAJ20X160-40S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×160 | Stroke length in mm. |
| -40 | 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 MAJ20X160-40S Is Used
Multi-height box ejector
Ejects three box heights (120, 140 and 160 mm) from a packing conveyor using one cylinder and the full 40 mm trim.
Test-rail pusher
Pushes housings into a leak-test nest on a fixture line, with 219.8 N available at 0.7 MPa for tighter seals.
Bin lid hold-open
Holds open the lid of a small parts bin at a pick station; the magnet and DMSG switch flag the open state to the PLC.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X160-40S the Right Cylinder?
This model replaces two fixed-stroke cylinders when a machine handles parts of different heights, since the 40 mm window spans 120-160 mm of effective extend. Below 120 mm you would need a shorter stroke; above it, look at the 25 mm bore's 245.3 N push at 0.5 MPa or a longer MAJ order. Flange (FA) and foot (LB) mounts plus I / Y rod knuckles cover most fixture styles. Because the built-in magnet is standard, adding CMSG / DMSG / EMSG switches for position feedback needs no piston change. The trim screw is purely a mechanical end stop, so never rely on it to hold a load if the air drops, and keep external guides on the load to spare the 8 mm rod over a 160 mm span.
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 MAJ20X160-40S FAQ
At 0.5 MPa: 157 N push, 131.9 N pull. At 0.7 MPa: 219.8 N push, 184.7 N pull. Theoretical maximum 32 kgf at 1.0 MPa. Supply pressure 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), piston speed 30-800 mm/s over the 160 mm stroke.
Air ports are 1/8" on both covers and the rod thread is M8x1.25. The magnet is fitted as standard on every MA-series cylinder, so CMSG, DMSG and EMSG switches mount straight onto the barrel for end-of-stroke or intermediate position checks.
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.
Request a Quote for Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X160-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.