
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X10-10S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 10mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
Short travel with tuning freedom to match: the MAJ20X10-10S gives a 10 mm nominal stroke, and the external stop screw sets the exact extend point anywhere within the ordered 10 mm window. Double-acting, rated for 0.15-1.0 MPa (22-145 psi) and 30-800 mm/s.
The 20 mm bore pushes 157.0 N and pulls 131.9 N at 0.5 MPa, so count on roughly 94 N of usable work - enough to raise about 8 kg vertically at a 2:1 safety factor. A stainless barrel and hard-chrome plated 8 mm rod keep it alive in coolant mist, and the fixed bumper pad takes the sting out of these very short, fast hits.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X10-10S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 10 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.
| 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.
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×10 | Stroke length in mm. |
| -10 | 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.
Lock thin aluminium blanks against a hard stop with 157 N; a 10 mm clamp travel keeps the added cycle time under a second.
Knock finished blisters clear of the sealing station; 131.9 N of pull force resets the paddle between picks.
The 10 mm window lets a technician pin the dial at the nearest lock hole; a CMSG switch confirms the pin is fully engaged.
At 10 mm stroke this sits below every long-travel option; move to the 25 mm MAJ (245.3 N push at 0.5 MPa) if 157.0 N comes up short for the clamp. With travel this small, keep tooling centered - even a little side load works the 8 mm rod bushing hard.
The stop screw is an extend-side end stop, not a load lock, so gravity loads still need outside support when air drops. FA flange and LB foot both fit the body; I and Y knuckles handle rod-end links. The magnet is factory-fitted for CMSG / DMSG / EMSG sensing.
Quick checklist
20 mm bore, 10 mm stroke with a 10 mm adjustable extend window: 157.0 N push and 131.9 N pull at 0.5 MPa, 219.8 N and 184.7 N at 0.7 MPa, 32.0 kgf theoretical peak at 1.0 MPa. Port 1/8", rod thread M8x1.25, speed 30-800 mm/s, pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa = 215 psi.
Fixed anti-impact bumper pads are built in at both stroke ends and absorb the deceleration pulse, which matters when a 10 mm stroke cycles near the top of the 30-800 mm/s band. They are not adjustable air cushions; if tunable cushioning is required, the MACJ variant is the related choice.
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