Airtac MBLCJ Adjustable Mini Cylinder MBLCJ50X500-20
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ50X500-20 is a genuine double-acting aluminum-barrel mini cylinder with a Ø50mm bore, a 500mm nominal stroke and a rear adjustable-stroke stopper — trim up to 20mm for a usable window of 480–500mm. Adjustable air cushion (both ends).
- BoreØ50 mm
- Stroke500 mm
- Adjustable480–500 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM14×1.5
- 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 MBLCJ50X500-20
The AirTAC MBLCJ50X500-20 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. It delivers 981 N of push force at 0.5 MPa and utilizes a Ø16 mm carbon-steel rod with 20 um hard-chrome plating. The rear stopper allows you to trim up to 20 mm of travel, creating a precise usable stroke window of 480-500 mm. This 500 mm travel length is ideal for moving heavy trays or transferring large components between machine zones.
Unlike the base MBLJ which relies on a fixed rubber bumper, this model uses screw-tunable end-of-stroke deceleration to absorb kinetic energy, protecting the end covers during high-speed moves. The riveted rolling-packed barrel and grease-retaining piston seal ensure consistent friction over long cycles. Note that this specific SKU lacks a built-in magnet (-S), meaning it cannot support CMSG, DMSG, or EMSG position sensors without a physical model change.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ50X500-20 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ50X500-20 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø50 mm |
| Nominal stroke | 500 mm |
| Adjustable window | 480–500 mm (trim 20 mm) |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M14×1.5 |
| 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 | 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 881 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 MBLCJ50X500-20
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 50 | Bore size in mm. |
| ×500 | 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 MBLCJ50X500-20 Is Used
Pallet Transfer Ejection
Uses the full 981 N push force at 0.5 MPa to eject completed pallets from an assembly line, relying on the adjustable air cushion to decelerate the 500 mm travel smoothly.
Large Panel Indexing
Shifts heavy sheet metal panels between robotic welding stations, utilizing the 480-500 mm usable stroke window to fine-tune the exact hand-off position.
Heavy Blanking Feed
Feeds thick composite blanks into a hydraulic press, where the tunable end cushions absorb the kinetic energy of the heavy 50 mm bore rod assembly.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ50X500-20 the Right Cylinder?
Step down to the Ø32 bore if your application only requires 402 N of push force at 0.5 MPa, or step up to the Ø63 bore if you need a massive 1558 N to move heavier payloads. Choose this MBLCJ over the MBLJ when your 500 mm stroke speed demands tunable pneumatic cushioning rather than a fixed rubber bumper. If your travel length is fixed and requires no rear adjustment, the MBLC variant offers the same cushioning without the adjuster.
The rear adjuster sets the travel end point and the cushion only decelerates the piston; neither component acts as a mechanical lock to hold a load in place. External guide rails are highly recommended for this 500 mm stroke to prevent side-loading damage to the Ø16 mm rod. Mounting is limited to Basic, FA flange, or LB foot styles; there is no SDB pivot or back-cover option. For a direct replacement, match the 50 mm bore, 500 mm stroke, 20 mm adjust code, G1/4 port, PT thread, and confirm no magnet is required.
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 MBLCJ50X500-20 FAQ
At 0.5 MPa it provides 981 N push and 881 N pull force. At 0.7 MPa the push force increases to 1374 N. The maximum theoretical force is 200 kgf at 1.0 MPa. The 500 mm stroke is the maximum standard length for a Ø50 bore.
No. The rear 20 mm adjuster is a travel stop that sets the end position (creating a 480-500 mm window), and the adjustable air cushion only decelerates the piston near the end covers. Neither component locks or holds the load; you need external mechanical locking for position holding.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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