Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-30S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-30S is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 450mm nominal stroke and a rear adjustable-stroke stopper — trim up to 30mm for a usable window of 420–450mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke450 mm
- Adjustable420–450 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable air cushion (both ends)
- 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 MBLCJ Adjustable Mini Cylinder MBLCJ40X450-30S
The AirTAC MBLCJ40X450-30S is a compact double-acting aluminum mini cylinder featuring a rear adjustable stroke and an adjustable air cushion at both ends. It delivers 628 N push force at 0.5 MPa via a 40 mm bore. The 30 mm rear adjuster creates a usable travel window of 420-450 mm, letting you dial in the exact end position without machining stops. The screw-tunable cushioning decelerates heavy loads before impact, protecting the end covers.
This SKU includes a built-in magnet (-S) for CMSG, DMSG, or EMSG sensor switches and uses a G1/4 port with PT threads. The riveted rolling-packed barrel and 20 µm hard-chrome plated carbon-steel rod withstand demanding cycles. Because the 450 mm stroke is long relative to the 16 mm rod, an external guide is recommended to prevent side-load bending. The rear stopper sets travel limits but does not lock the load; the cushion only decelerates.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-30S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-30S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 450 mm |
| Adjustable window | 420–450 mm (trim 30 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 MBLCJ40X450-30S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×450 | Nominal stroke length in mm. |
| -30 | 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 MBLCJ40X450-30S Is Used
CNC Lathe Bar Feeder
Pushes raw bar stock through the spindle over a long 450 mm stroke, using the 420-450 mm window to compensate for varying stock lengths while the air cushion prevents abrupt stops.
Textile Loom Let-Off
Tensions yarn beams with 628 N of force, relying on the tunable end cushion to soften deceleration during high-speed direction reversals without shocking the warp threads.
PCB Conveyor Diverter
Actuates a routing gate on an SMT line, using the DMSG electronic sensor to confirm full extension and the rear stopper to precisely set the gate depth.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-30S the Right Cylinder?
For 628 N push at 0.5 MPa, this 40 mm bore sits between the 32 mm bore (402 N push) and the 50 mm bore (981 N push). Choose this if you need high force over a long distance with fine end-tuning; step down to 32 mm for lighter loads or up to 50 mm if your payload exceeds 600 N. Unlike the MBLJ which uses a fixed rubber bumper, this MBLCJ allows screw-tunable air cushioning for heavier dynamic loads. Unlike the MBLC which has a fixed stroke, this model offers a 420-450 mm adjustment window.
The rear stroke adjuster is a travel stop, not a mechanical lock—unpowered rod drift will occur, so external holding valves are needed if position must be maintained. Mounting is limited to Basic, FA, or LB; no SDB or back-cover options exist. For a drop-in replacement, match the 40 mm bore, 450 mm stroke, 30 mm adjust code, G1/4 port, PT thread, and the -S magnet.
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 MBLCJ40X450-30S FAQ
At 0.5 MPa, the push force is 628 N and the pull force is 528 N. At 0.7 MPa, the push force increases to 880 N. The maximum theoretical force is 128 kgf at 1.0 MPa.
The rear adjustable stroke lets you mechanically trim the travel window down to 420 mm from the 450 mm nominal stroke, acting as a hard stop. The adjustable air cushion uses a screw needle valve to tune end-of-stroke deceleration. Neither holds the load pneumatically; the rod will drift without air pressure.
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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