Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X70-30S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X70-30S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 70mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke70 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 MAJ25X70-30S
A 30 mm tuning band on a 70 mm base stroke makes this the flexible pick of the bore 25 adjustable family: commission once, then re-trim the extend stop as the product or fixture changes. The MAJ25X70-30S is double acting, needs only clean air at 0.15-1.0 MPa (22-145 psi), and cycles anywhere from 30 to 800 mm/s. Extend force reaches 245.3 N at 0.5 MPa, with 343.4 N available when the line runs at 0.7 MPa.
Inside the riveted round body sits a stainless barrel matched to a hard-chrome plated rod, so damp workshops and light washdown zones rarely trouble it. Sized conservatively, count on about 147 N of real working push at 0.5 MPa, enough to lift roughly 12 kg vertically with a 2:1 safety factor. Fixed anti-impact pads take the sting out of stroke ends, and the standard-fit magnet lets CMSG or EMSG switches snap on for position feedback.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X70-30S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X70-30S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 70 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 MAJ25X70-30S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×70 | 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 MAJ25X70-30S Is Used
Indexing stop gate
A pop-up stop on a pallet conveyor that halts incoming pallets at a set point, re-trimmable across 40-70 mm as pallet sizes change.
Lab sample press
Bench-top tamping station pressing vial caps home with a gentle 245 N class force and an exact, repeatable stroke depth.
Robot gripper kicker
Part-nudge cylinder ahead of a robot pick cell, with a CMSG switch verifying the retracted home position every cycle.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X70-30S the Right Cylinder?
Between bores, the 20 mm MAJ at 157 N handles lighter gate work, while the 32 mm version at 402.2 N suits heavier press-fit tasks. Note that the external stop shortens the extend stroke within the -30 window but is not a brake: without air the piston coasts freely, so add a separate lock if a load must hang. FA flange, LB foot and the I / Y knuckles adapt to either foot- or flange-mounted frames.
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 MAJ25X70-30S FAQ
At 0.5 MPa the extend stroke generates 245.3 N and the retract 206.1 N; raise supply to 0.7 MPa for 343.4 N forward and 288.5 N back. Theoretical maximum at 1.0 MPa is 50 kgf. Threads are M10x1.25 on the 10 mm rod, the air port is 1/8", and the working band is 0.15-1.0 MPa (22-145 psi).
FA flange and LB foot brackets are the standard choices, with I and Y knuckles for rod-end articulation. At 70 mm stroke keep the rod coupling aligned and avoid lateral forces on the chrome-plated rod to protect bushing life.
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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