Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-20
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-20 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 20mm for a usable window of 430–450mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke450 mm
- Adjustable430–450 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 MBLCJ40X450-20
The AirTAC MBLCJ40X450-20 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and a tunable air cushion at both ends. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa. The rear stopper trims up to 20 mm of travel, creating a usable stroke window of 430-450 mm for precise end-positioning over long 450 mm movements.
Unlike the fixed rubber bumper on an MBLJ, this model uses screw-tunable pneumatic cushioning to decelerate heavy loads smoothly at each stroke end, protecting the end covers. The riveted aluminum barrel and 20 um hard-chrome plated carbon-steel rod withstand demanding cycles. This specific SKU lacks a built-in magnet, so it cannot support CMSG, DMSG, or EMSG position sensors.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-20 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-20 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 450 mm |
| Adjustable window | 430–450 mm (trim 20 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 MBLCJ40X450-20
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×450 | Nominal stroke length in mm. |
| -20 | 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 MBLCJ40X450-20 Is Used
Textile Loom Beam Extraction
Draws heavy fabric beams out of a weaving loom, using the 430-450 mm adjustable window to align the drop precisely before the cushioned end-stop absorbs the 628 N load.
Packaging Flap Folding
Drives carton side-flaps on a continuous flow wrapper, relying on the adjustable air cushion to soften the 450 mm extension impact and prevent cover fracture at high speeds.
CNC Lathe Conveyor Push
Ejects turned metal parts from a lathe bed into a collection chute, using the full 450 mm travel to clear the work zone before the rear stopper trims the final position.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-20 the Right Cylinder?
At 628 N push (0.5 MPa), stepping down to a 32 mm bore drops output to 402 N, while stepping up to a 50 mm bore increases it to 981 N. Choose the MBLCJ over the MBLJ when your moving mass requires active end-of-stroke deceleration rather than a fixed bumper, or the MBLC variant if you need a fixed 450 mm stroke without the 20 mm rear trim. Remember the rear adjuster sets a mechanical travel stop and the cushion only decelerates; neither holds the load in place, so external locking is needed for position holding. Mounting is restricted to Basic, FA flange, or LB foot brackets (no SDB pivot or back-cover). For an exact replacement, match the 40 mm bore, 450 mm stroke, 20 mm adjust code, G1/4 port, PT thread, and no-magnet configuration. Because the stroke is 450 mm, the small 16 mm rod is prone to side-load bending; always guide the load externally.
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 MBLCJ40X450-20 FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 880 N. The maximum theoretical force is 128 kgf at 1.0 MPa.
This specific SKU lacks the -S magnet code, so it cannot accept CMSG, DMSG, or EMSG electronic position switches. The rear adjuster allows you to trim up to 20 mm of travel, creating a 430-450 mm usable window. This mechanism acts as a travel stop, not a load lock, while the separate adjustable air cushion only controls end-of-stroke deceleration.
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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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