Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X150-30S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X150-30S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 150mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke150 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 MAJ20X150-30S
Where changeovers shift the stop point in steps, the MAJ20X150-30S absorbs up to 30 mm of that variation: loosen the external stop screw, reset the extend stroke, tighten again. It is double-acting throughout the 150 mm stroke, developing 157 N at 0.5 MPa (219.8 N at 0.7 MPa), and the 20 mm bore unit runs 1/8" ports with an M8x1.25 rod thread.
The riveted stainless round body resists the washdown and condensation that ruin painted minis, while the hard-chrome 8 mm rod rides on seals that hold grease in service. Fixed bumpers soften each stroke end - a passive deceleration, distinct from the tunable cushions of the MACJ series. Budget around 94 N of usable push at 0.5 MPa, or vertical lifting near 8 kg with a 2:1 margin, and rely on the standard piston magnet for CMSG / DMSG / EMSG switches.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X150-30S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X150-30S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 150 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 MAJ20X150-30S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×150 | Stroke length in mm. |
| -30 | 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 MAJ20X150-30S Is Used
Multi-product nesting
On a family-mold bench making three cap heights, re-set the ejector stroke between jobs with the 30 mm window instead of swapping cylinders.
Conveyor reject pusher
Kick mislabeled cartons off a sorting belt; 157 N at 0.5 MPa moves empty trays easily, and the built-in magnet confirms the pusher has parked home.
Dispense-volume setup
Set a fill-head parking depth on a small liquid filler; adjust within the 30 mm window when switching between bottle formats.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X150-30S the Right Cylinder?
Forces: the bore 16 MAJ pushes 100.5 N and the bore 25 MAJ25 pushes 245.3 N at 0.5 MPa, so the 20 mm bore's 157 N covers mid-light work. If the stop might move more than 30 mm between products, order a wider window (-100 exists on this stroke) rather than re-pitching the cylinder. FA flange or LB foot mounting, I and Y knuckles. The stop screw sets an extend-stroke end position; it does not clamp the piston when pressure drops, so use a locking valve if the load must stay put.
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 MAJ20X150-30S 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 at 1.0 MPa: 32 kgf. Pressure range 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, bore 20 mm, stroke 150 mm with a 30 mm adjustable extend window set by the external stop screw.
The stainless barrel plus the hard-chrome plated carbon-steel rod tolerate washdown splash, condensation and mild outdoor exposure far better, and the riveted aluminium covers keep the body slim. Pair that with the standard built-in magnet for CMSG / DMSG / EMSG switches, and the MAJ covers damp production cells without any special coatings.
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 MAJ20X150-30S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.