Airtac MGC Stainless Steel Mini Cylinder MGC63X300
The AirTAC Airtac MGC Stainless Steel Mini Cylinder MGC63X300 is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø63mm bore and 300mm stroke, 1/4" air ports and a SUS304 stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ63 mm
- Stroke300 mm
- Port size1/4"
- Acting typeDouble acting + cushion
- Rod threadM18×1.5
- CushionVariable air cushion, both ends
About the Airtac MGC Stainless Steel Mini Cylinder MGC63X300
The AirTAC MGC63X300 is a double acting, JIS-standard round-body mini cylinder with a 63 mm bore and 300 mm stroke, and it is the largest bore in the MGC cushioned family. What sets it apart from the bumper-type MG is the variable air cushion at both stroke ends: turn the cushion needle in and the piston decelerates smoothly before it reaches the cover, so at higher piston speeds or with heavier moving loads the end of stroke stays quiet instead of hammering. It is an adjustable air cushion, not a fixed pad, and it is one of the reasons the MGC line is offered in 50 and 63 mm bores while the plain MG stops at 40 mm.
Construction follows the JIS mini-cylinder footprint: a SUS304 stainless barrel with the front and back covers riveted and rolled onto it, no tie rods and no extruded profile. The 20 mm hard-chrome plated rod (20 um plating) carries a male M18x1.5 thread, and air is supplied through 1/4" ports. At 0.5 MPa the cylinder pushes 1557.9 N and pulls 1400.9 N; at 0.7 MPa that rises to 2181 N push and 1961.2 N pull, with a theoretical maximum of 317.7 kgf at 1.0 MPa. A practical rule of thumb for sizing: take roughly 0.6 of the 0.5 MPa push force, which gives about 95 kg as a safe working figure for a horizontal or guided load. Operating pressure is 0.15 to 1.0 MPa (22 to 145 psi), proof pressure 1.5 MPa (215 psi), speed range 30 to 800 mm/s, and the piston seal is a two-way design that also stores lubricant.
Airtac MGC Stainless Steel Mini Cylinder MGC63X300 Technical Specifications
| Model | Airtac MGC Stainless Steel Mini Cylinder MGC63X300 |
|---|---|
| Series | MGC JIS mini cylinder |
| Bore size | Ø63 mm |
| Stroke | 300 mm |
| Acting type | Double acting + cushion |
| Port size | 1/4" |
| Rod thread | M18×1.5 |
| 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 | Variable air cushion, both ends |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MG-series (JIS standard) datasheet. Barrel: SUS304 stainless steel (round-body, riveted construction); piston rod: carbon steel with 20µm hard-chrome plating. Thread options: PT (blank) / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | 1962 N |
| Max (@1.0 MPa) | 318 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MGC Stainless Steel Mini Cylinder MGC63X300
| MGC | JIS round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 63 | Bore size in mm. |
| ×300 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
| FA / LB | Mounting: FA flange, LB foot. |
MG-family variants: MG / MGC (double acting ±cushion), MSG / MTG (single acting push / pull), MGD / MGCD (double rod ±cushion). Accessories: LB foot, FA flange, plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MGC Stainless Steel Mini Cylinder MGC63X300 Is Used
Case pressing and forming stations
The 1557.9 N push at 0.5 MPa (about 2181 N at 0.7 MPa) closes flaps, seats inserts and presses light assemblies, while the variable air cushion absorbs the deceleration so fast approach cycles do not slam the covers.
Conveyor stop and divert gates
A cushioned 63 mm bore stops moving cartons or totes on a line without the end-of-stroke shock a bumper-only cylinder transmits, and the 30 to 800 mm/s speed range matches typical line pacing.
Clamping on machining and assembly fixtures
With 2181 N push at 0.7 MPa and a hard-chrome 20 mm rod, the MGC63X300 holds workpieces in jigs and fixtures; the adjustable cushion lets you soften the clamp approach on delicate or finished surfaces.
Is the Airtac MGC Stainless Steel Mini Cylinder MGC63X300 the Right Cylinder?
At 63 mm bore this is the strongest MGC in the range: 1557.9 N push at 0.5 MPa, roughly 1.6 times the 981.3 N of the 50 mm bore and about 2.5 times the 628.3 N of the 40 mm. If your load needs less than about 600 N of push, the 32 mm bore will do the job more cheaply; if you are between 600 and 1000 N, look at the 40 or 50 mm. There is no larger MGC bore, so anything above roughly 1550 N at 0.5 MPa means stepping up to a bigger series. For 20 to 40 mm bores, remember the bumper-type MG is the no-cushion alternative, but only the MGC reaches 50 and 63 mm. The 300 mm stroke is a standard length (the family goes to 500 mm standard, longer made to order), and at this stroke keep side loads off the rod: use a guide if the load is not self-aligning. Mounting is FA flange or LB foot, with I and Y rod knuckles available, and the port thread is PT as standard (G or NPT on request). This SKU has no magnet, so position sensing with CMSG, DMSG or EMSG switches requires ordering the -S version.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting (LB / FA) & knuckle
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 On first run, back off the cushion and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MGC Stainless Steel Mini Cylinder MGC63X300 FAQ
At 0.5 MPa it pushes 1557.9 N and pulls 1400.9 N; at 0.7 MPa, 2181 N push and 1961.2 N pull. The theoretical maximum is 317.7 kgf at 1.0 MPa. For sizing, use about 0.6 of the 0.5 MPa push force, which gives roughly 95 kg as a safe working load; for a vertical lift, halve the push force expressed in kgf (about 79 kgf at 0.5 MPa) and add a guide, since the cylinder does not resist side loads.
The cushion is an adjustable air restriction at both stroke ends: turning the needle throttles the exhaust so the piston decelerates smoothly instead of striking the cover, which is why the MGC tolerates higher speeds and heavier moving loads than the bumper-type MG. It only decelerates the end of stroke. It is not a lock or brake, and the cylinder will not hold position if air pressure is lost; for a held load, add an external rod lock or pilot-operated check valve.
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