Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X250SU
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X250SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø40mm bore and 250mm stroke, G1/4 air ports and a fixed rubber bumper. Its compact riveted body suits push, hold and clamp motion in tight machine spaces.
- BoreØ40 mm
- Stroke250 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X250SU
The AirTAC MBLC40X250SU is a double-acting aluminum mini cylinder engineered for compact setups needing controlled end-of-stroke deceleration. It produces 628 N of push force and 528 N of pull force at 0.5 MPa. The 250 mm stroke handles extended travel for mid-range actuation tasks. A built-in magnet (-S) enables position detection via CMSG, DMSG, or EMSG sensor switches.
Unlike the base MBL which relies on a fixed rubber bumper, this MBLC variant features a screw-adjustable pneumatic cushion at both ends. You tune the needle to smoothly brake the piston near stroke limits, cutting impact shock and vibration on heavier or faster moves. The riveted rolling-packed aluminum barrel keeps the body light and tight for machine integration, while the 20 µm hard-chrome carbon-steel rod resists wear alongside the heterogeneous two-way grease-retaining piston seal. The U flat-end back cover provides a rigid default rear mounting face.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X250SU Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X250SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 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 | Rubber bumper (MBLC variant: adjustable air cushion) |
| Max stroke | Up to 500 mm |
Specifications follow the official AirTAC MBL series datasheet. Confirm against the product label before installation. Standard stroke to 500 mm (special order to 800 mm). 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 safety margin.
Model Code: Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X250SU
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 40 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related variants: MBLC (adjustable cushion), MBLD (double rod), MBLJ (adjustable stroke), MSBL/MTBL (single acting).
Where the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X250SU Is Used
CNC Lathe Bar Feeder
Pushes raw bar stock through a spindle with 628 N force; the tunable air cushion prevents the 250 mm stroke from slamming into the feed stop at high speed.
Pallet Transfer Reject Arm
Kicks defective products off a packaging line; the adjustable cushion absorbs the mass of the swinging arm and payload at stroke end, reducing pivot wear.
Vertical Carton Erector
Extends 250 mm to fold corrugated carton blanks; the cushion needle is dialed in to halt the 16 mm rod smoothly before the U flat-end cover takes the impact.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X250SU the Right Cylinder?
At 0.5 MPa, this 40 mm bore yields 628 N push and 528 N pull. If you need less force, step down to the 32 mm bore offering 402 N push and 346 N pull. If your load requires more thrust, step up to the 50 mm bore providing 981 N push and 881 N pull. Choose this MBLC over the base MBL when your cycle speeds or moving masses exceed what a fixed rubber bumper can absorb without causing end-cover damage or excessive noise.
Because the 250 mm stroke is relatively long for a 16 mm rod, side-load tolerance is low and the rod is susceptible to bending under offset loads. Manage this by guiding the load externally, using a pivot bracket, or switching to an MBLD double-rod cylinder. A plain MBLC does not hold position if air is lost or the valve centers; the cushion only decelerates near the ends and is not a lock. For drop prevention, add an external rod lock or pilot-operated check valve. Replacement match: 40 mm bore, 250 mm stroke, G1/4 port, M12x1.25 rod thread, PT port thread, U flat-end back cover, magnet included.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
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 Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (LB / FA / SDB) and back cover (CA pivot / U flat-end).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X250SU FAQ
At 0.5 MPa it delivers 628 N push and 528 N pull. At 0.7 MPa it yields 880 N push and 739 N pull. The maximum theoretical force is 128 kgf at 1.0 MPa operating pressure.
The cushion uses a screw-tunable needle at both ends to trap and bleed exhaust air, decelerating the piston smoothly near stroke limits instead of hitting a fixed rubber bumper. The -S magnet allows mounting CMSG reed switches or DMSG and EMSG electronic solid-state sensors for rod position detection.
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