Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-10
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-10 is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 350mm nominal stroke and a rear adjustable-stroke stopper — trim up to 10mm for a usable window of 340–350mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke350 mm
- Adjustable340–350 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-10
The AirTAC MBLCJ40X350-10 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. It delivers 628 N push and 528 N pull force at 0.5 MPa. The rear stopper allows you to trim up to 10 mm of travel, creating a precise 340-350 mm usable stroke window for exact end positioning. The twin pneumatic cushions use a screw needle valve to tune end-of-stroke deceleration, absorbing kinetic energy to protect the end covers far better than a fixed rubber bumper.
This specific configuration uses a G1/4 port, a Ø16 mm carbon-steel rod with 20 µm hard-chrome plating, and an M12x1.25 rod-end thread. Because this 350 mm stroke approaches the 500 mm limit for this bore, the small 16 mm rod is susceptible to bending under lateral loads—an external guide rail is strongly recommended to prevent side-load damage. Note that this SKU lacks a built-in magnet (-S), meaning it cannot support CMSG, DMSG, or EMSG position sensors.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-10 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-10 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 350 mm |
| Adjustable window | 340–350 mm (trim 10 mm) |
| Acting type | Double acting |
| Port size | G1/4 |
| 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 | Adjustable air cushion (both ends) |
| Max standard stroke | Up to 500 mm |
The rear stopper sets the end position — it is a travel stop, not a lock. Overall length = A + 2 × stroke + adjustable stroke. MBLJ/MBLCJ mounting is Basic / FA / LB only (no SDB, no back-cover code). Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a margin.
Model Code: Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-10
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×350 | Nominal stroke length in mm. |
| -10 | Adjustable-stroke amount (mm you can trim at the rear). |
| S | Optional built-in magnet for a CMSG/DMSG/EMSG sensor switch. |
Related: MBLJ (adjustable stroke, fixed bumper), MBL (fixed stroke), MBLD (double rod).
Where the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-10 Is Used
CNC Lathe Bar Feeder
Pushes raw bar stock into the spindle collet over a 350 mm stroke, using the 10 mm rear adjuster to dial in the exact material protrusion while the air cushion prevents harsh impact on the feed tube.
Packaging Line Diverter
Sorts heavy cartons by extending a 628 N deflector blade; the tunable end cushioning allows fast actuation without slamming the cylinder end covers during high-speed routing.
PCB Router Clamp
Secures fiberglass panels during depaneling, where the 340-350 mm usable stroke window accommodates varying board widths and the lack of a magnetic sensor is irrelevant for a basic mechanical clamp.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-10 the Right Cylinder?
Choose this 40 mm bore when you need 628 N of push force at 0.5 MPa. If your payload is lighter, step down to the 32 mm bore (402 N push), or if you need heavier thrust, step up to the 50 mm bore (981 N push). This MBLCJ variant is preferred over the MBLJ when high cycle speeds require tunable pneumatic damping instead of a fixed bumper. Compared to the MBLC, this model adds the 10 mm rear stroke trim for exact end-of-travel limits.
Remember that the rear adjuster is a mechanical travel stop, not a lock—it cannot hold a load in place without continuous air pressure, and the cushion only decelerates the piston rather than braking it. Mounting is limited to Basic, FA flange, or LB foot styles; there is no SDB pivot or back-cover option. To replace this unit, match the 40 mm bore, 350 mm stroke, 10 mm adjust code, PT port thread, and confirm no magnet is required. Overall length equals A + 2 x stroke + adjust.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Adjustable window fits your end position
- ✓ Adjuster is a travel stop, not a lock
- ✓ Magnet (S) for sensors?
- ✓ Side load — add a guide on long strokes
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear stopper for the end position (a travel stop, not a lock).
- check Avoid side load; add an external guide on long strokes.
- check Mounting: Basic / FA flange / LB foot (no SDB, no back-cover code).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-10 FAQ
At 0.5 MPa it provides 628 N push and 528 N pull force. At 0.7 MPa push increases to 880 N, with a theoretical maximum of 128 kgf at 1.0 MPa. The rear stroke adjuster and air cushion do not lock the rod; the cylinder drifts without live air pressure, so an external lock is needed for position holding.
The rear stopper lets you mechanically trim the stroke by up to 10 mm, creating a 340-350 mm usable travel window. This is separate from the adjustable air cushion, which uses needle screws at both ends to tune end-of-stroke deceleration speed. The stopper sets the physical end point, while the cushion absorbs the kinetic energy.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Adjustable-Stroke Cylinders
Request a Quote for Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-10
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.