Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X100-40S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X100-40S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø40mm bore and 100mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ40 mm
- Stroke100 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM12×1.25
- 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 MAJ40X100-40S
With a 40 mm bore, this MAJ delivers 628 N of push and 528 N of pull at 0.5 MPa, rising to 880 N at 0.7 MPa. Air drives the rod both ways, while an external stop screw trims the extend stroke anywhere inside the ordered 40 mm window, so one cylinder serves several jig depths.
The stainless round barrel and hard-chrome 16 mm rod resist corrosion in damp or washdown spots, and the riveted aluminium covers keep the body compact. A magnet comes built in, so CMSG, DMSG or EMSG switches clamp on without a special piston. For sizing, treat roughly 377 N as the practical working force at 0.5 MPa.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X100-40S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X100-40S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 500 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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 MAJ40X100-40S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 MAJ40X100-40S Is Used
Cover lift on a palletizer
The 32 kg vertical-lift equivalent at a 2:1 margin suits raising a 25-30 kg guard or chute cover through a 100 mm stroke.
Clamp fixture on a CNC jig
About 377 N of practical clamp force at 0.5 MPa holds steel parts in a milling fixture, with the stop screw dialing in the approach.
Pusher on a bottle line
In washdown areas the stainless barrel shrugs off moisture while nudging cartons between conveyor lanes all shift long.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X100-40S the Right Cylinder?
Downsizing to a 32 mm bore gives about 402 N push at 0.5 MPa; if that margin is thin, this 40 mm bore and its 628 N are the strongest the MA range offers. The stop screw sets the extend position but is not a lock: with air lost the rod can still drift, so clamp or support the load separately. Pair it with an FA flange or LB foot, and add an I or Y rod knuckle where the tool must pivot. Keep side loads off the 16 mm rod or guide them externally to protect the bushing.
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 MAJ40X100-40S FAQ
At 0.5 MPa it pushes 628.3 N and pulls 527.8 N; at 0.7 MPa push rises to 879.6 N and pull to 738.9 N. The theoretical maximum at 1.0 MPa is 128.1 kgf. Working range is 0.15-1.0 MPa (22-145 psi) with speeds of 30-800 mm/s.
An external stop screw shortens the extend stroke to any position inside the ordered 40 mm window; it cannot lengthen travel past the 100 mm base stroke. The stop is a mechanical end stop, not a mid-stroke lock, and fixed bumper pads soften the arrival at each end.
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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