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MHS3-25D

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SMC MHS3-25D is a 25 mm bore, double-acting three-finger parallel air gripper for centering and holding round industrial workpieces.
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Ships by Wednesday, September 30
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Technical specifications for MHS3-25D

  • Manufacturer:
    SMC
  • Part Number:
    MHS3-25D
  • Product Family:
    SMC
  • Product Type:
    MHS Series Three-Finger Parallel Air Gripper
  • Stock:
    1
  • Series:
    MHS
  • Finger Count:
    3
  • Motion:
    Parallel opening and closing
  • Action:
    Double acting
  • Bore Size:
    25 mm
  • Operating Pressure:
    0.2 to 0.6 MPa
  • Repeatability:
    ±0.01 mm
  • Opening Force Reference:
    42 N
  • Closing Force Reference:
    47 N
  • Stroke:
    6 mm
  • Auto Switch:
    None in exact configuration
  • Weight:
    0.14 kg
  • Estimated shipping dimensions:
    4.2 x 4.2 x 4.0 cm
  • Tariff Code:
    Please confirm the destination before shipping
  • Country of origin:
    Japan
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Tooling Design Pneumatic Setup Load Validation Product Applications

Features:

  • Three-point centering: Synchronized parallel fingers help locate round parts around the gripper axis.
  • Bidirectional pneumatic control: Double acting operation commands both open and close movement.
  • Tooling flexibility: External fingers can be shaped for the workpiece when mass and moment limits are respected.
MHS3-25D provides compact pneumatic gripping where a three-finger arrangement is preferred over a two-jaw mechanism.

The useful gripping force at the workpiece depends on supply pressure and the distance from the finger reference point to the contact surface.

Machine safety must address the payload response during pressure loss because the exact D configuration has no spring-return retention.

Apter Power can help confirm the SMC MHS3-25D MHS Series Three-Finger Parallel Air Gripper, bore, tooling load, pressure and sensing requirements before quotation.
SMC MHS3-25D MHS Series Three-Finger Parallel Air Gripper Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Finger mass: Keep added tooling within the manufacturer’s allowable mass and inertia.
  • Moment arm: Place contact points close enough to the finger reference to retain usable force and bearing life.
  • Balanced geometry: Machine the three fingers consistently so the workpiece centers without side loading.
  • Positive retention: Add features that prevent a critical part from dropping if friction decreases.
  • Pressure range: Regulate clean air within the specified operating band.
  • Speed control: Meter flow to prevent finger impact and workpiece shock.
  • Port cleanliness: Keep debris out of tubing and ports during installation.
  • Direction proof: Confirm open and close commands at reduced pressure before automatic cycling.
  • Actual force: Evaluate grip at the real pressure, contact radius and surface condition.
  • Dynamic load: Include robot acceleration and emergency-stop forces, not only static part weight.
  • Repeatability check: Measure the held position with production tooling and representative parts.
  • Air-loss response: Define how the machine supports or captures the workpiece if pressure disappears.
  • Round-part handling: Centers rings, sleeves and cylindrical components for transfer.
  • Machine loading: Places balanced workpieces into chucks or fixtures.
  • Inspection stations: Holds components concentrically for measurement or vision checks.
  • Assembly automation: Aligns circular parts before insertion or fastening operations.
Description
MHS3-25D moves three jaws in parallel around a common center, supporting balanced gripping and centering of circular components in automated handling equipment.

The double-acting pneumatic mechanism of MHS3-25D applies controlled air pressure for both opening and closing, allowing the machine sequence to command each direction rather than depend on a return spring.

MHS3-25D is supplied without an auto switch in this exact configuration. Jaw tooling, load moments and sensing therefore need to be selected as part of the application rather than inferred from the gripper body alone.
Alternative Names
MHS325D MHS3 25D
Technical notes
MHS3-25D can release or move a workpiece when pneumatic energy changes. Before servicing, isolate and exhaust air, support the payload, and account for retained mechanical load. Keep external fingers short and balanced, verify gripping force at the actual pressure and moment arm, and test loss-of-air behavior before unattended operation.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
An MHS3-25D grips a part at low speed but drops it during robot acceleration. What should be recalculated?
Include dynamic acceleration, contact friction, finger length and actual air pressure in the gripping margin. Static weight alone is not a sufficient selection basis.
A designer wants long custom fingers on MHS3-25D to reach around a fixture. What is the stop condition?
Stop if tooling mass, moment or grip point exceeds the published limits. Redesign the fixture or gripper arrangement rather than accepting excessive bearing load.
Does MHS3-25D keep holding a part when compressed air is lost?
No spring-retention function is identified for this double-acting configuration. Engineer a support, check valve or safety measure appropriate to the hazard and validate it.
After finger replacement, MHS3-25D no longer centers the workpiece. Which evidence should be checked first?
Compare all three finger dimensions, mounting faces and fastener seating, then inspect the part contact points. Unequal external tooling can shift the center even when the gripper mechanism is healthy.
A proximity switch is required on MHS3-25D. Is one included in the exact order code?
No. This configuration is listed without an auto switch. Select the approved sensing arrangement and mounting hardware separately for the application.
MHS3-25D begins striking its stops after a cycle-time increase. Should pressure be reduced?
First set suitable flow controls and review payload inertia and required force. Pressure reduction alone can create weak gripping without controlling impact effectively.

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