Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X90-20S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X90-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 90mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke90 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM10×1.25
- 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 MAJ25X90-20S
The MAJ25X90-20S pairs a 90 mm extend stroke with a 20 mm trim window set by an external stop screw, so last-minute stroke changes never require a new cylinder. This double-acting bore 25 unit pushes 245 N and pulls 206 N at 0.5 MPa over a 0.15-1.0 MPa (22-145 psi) pressure range. Its riveted stainless round body and 10 mm hard-chrome plated rod stand up to coolant mist, and fixed bumper pads soften arrival at both ends of travel.
A quick sizing check: keep real work near 147 N - 60 percent of the 245 N push rating - which covers lifting parts of about 12 kg vertically once a 2:1 margin is applied to the 25 kg theoretical lift. Because the magnet is built in as standard, a DMSG or EMSG switch can confirm the trimmed position with no special-order piston.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X90-20S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X90-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 90 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 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 MAJ25X90-20S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×90 | Stroke length in mm. |
| -20 | 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 MAJ25X90-20S Is Used
Divertor arm on a tote sorter
Swings a divert arm to push totes onto a takeaway lane, with 245 N of push at 0.5 MPa moving loaded 15 kg totes briskly.
Sample lift in a lab autoloader
Raises sample racks into an analyser carousel; the stainless barrel and chrome rod tolerate the cleaning sprays used around lab automation.
Press-assist on an arbor press
Adds air muscle ahead of a manual arbor press for bushing insertion, trimming the approach stroke with the 20 mm window.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X90-20S the Right Cylinder?
At 0.5 MPa the neighbouring bores bracket this one: 157 N push from bore 20 and 402 N from bore 32, so the MAJ25X90-20S fits mid-weight gate and clamp duties. With a 90 mm stroke, watch side load - guide the load externally if the rod sees bending, since a slim mini rod is not a linear bearing. The stop screw is an extension end stop, not a position lock; air loss still lets the piston drift. FA flange or LB foot mounting, plus I or Y knuckles where the linkage pivots.
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 MAJ25X90-20S FAQ
Push is 245 N at 0.5 MPa and 343 N at 0.7 MPa; pull is 206 N at 0.5 MPa and 289 N at 0.7 MPa. Theoretical maximum force is 50 kgf at 1.0 MPa. Pressure runs 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s. It takes a 1/8 inch air port and an M10x1.25 male rod thread.
No. The MAJ carries fixed anti-impact pads that simply decelerate the piston at stroke end; they cannot be tuned like the adjustable air cushion on the AirTAC MACJ family. If your cycle needs controlled deceleration plus stroke adjustment, MACJ is the related type to compare.
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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