MHS3-50D: Wedge Cam Driven, High-Rigidity 3-Jaw Gripper, Expert for Heavy-Duty Press-Fitting & Centering Gripping

Product Positioning
The MHS3-50D is a parallel opening/closing type 3-jaw gripper from SMC’s MHS3 series, employing a wedge cam drive mechanism and slide guide方式. This series, characterized by its ultra-thin, high-rigidity design and excellent moment resistance, is an ideal end effector for complex applications in automated production lines requiring heavy-duty press-fitting, gripping of cylindrical workpieces, and high concentricity. It is widely used in robot arms, assembly lines, packaging/sorting, and industrial scenarios needing to withstand significant external forces.

Core Highlights: Wedge Cam, High Rigidity & Moment Resistance

• Wedge Cam Construction, Low Height & Lightweight
  • Utilizes a unique wedge cam transmission mechanism, efficiently converting the linear motion of the piston into parallel opening/closing of the jaws with a compact structure.
  • Compared to traditional designs, height dimension is significantly reduced, and weight is lighter, facilitating integration into space-constrained work environments.
• Suitable for Heavy-Duty Applications with External Forces
  • The wedge cam structure provides extremely high rigidity and moment resistance, particularly suitable for tasks requiring significant external forces, such as press-fitting and riveting, where the gripper can stably hold the workpiece while applying force.
• ±0.01mm High Repeatability, Precise Centering
  • Thanks to the precision wedge cam and slide guide, repeatability is as high as ±0.01mm, ensuring consistent gripping position every time, suitable for precision alignment and assembly.
• Strong Gripping Force, Clear Specifications
  • Bore size Ø50mm, at 0.5 MPa operating pressure:
  • External gripping force: 187 N
  • Internal gripping force: 204 N
  • Sufficient for stable gripping of medium to heavy workpieces.
• Long Stroke Design, Wide Operating Range
  • The standard stroke of the MHS3 series is more than twice that of similar standard products, allowing gripping of workpieces with a wider size range, increasing application versatility.
• Can Grip Cylindrical Workpieces,附带 Central Through Hole
  • The 3-jaw design is inherently suitable for concentrically gripping cylindrical workpieces like pipes, bearings, bottles/cans.
  • The附带 central through hole and optional中心推进器 ensure reliable workpiece release, improving operational efficiency.
• Built-in Magnet, Smart Controllability
  • A magnet is built into the cylinder body, allowing easy selection of optional magnetic switches (e.g., M9B, Y59A) for non-contact detection and feedback of jaw open/close positions, facilitating integration with control systems like PLCs.

Model Breakdown
According to SMC nomenclature rules and search results, the MHS3-50D model designation is as follows:

Specifications Overview

Structure & Features
According to SMC technical data, main features of the MHS3 series include:

• Wedge Cam Drive Principle: Linear motion of the piston rod is converted into synchronous, parallel opening/closing motion of the three jaws via a wedge cam, simple and efficient.
• Slide Guide Guide: Jaws move on slide guides, providing平稳 linear guidance and excellent resistance to lateral loads.
• Double Acting Design: Jaw opening and closing can be controlled pneumatically, offering flexible and controllable动作.
• Easy Body Mounting: Can be mounted from two directions, facilitating integration into equipment.
• Rich Selection of Options: Offers various magnetic switches, grease packs, and replaceable parts (seals, jaws, cam, piston, etc.) for easy maintenance and upgrades.

Applicable Scenarios

• Robot Arms: As an end effector for robots, used for precise gripping and positioning of workpieces.
• Press-Fitting & Riveting Stations: Utilizing its high rigidity and moment resistance to perform press-fitting, riveting, or other machining operations while gripping the workpiece.
• Cylindrical Workpiece Handling: Concentric gripping and transfer of pipes, bearings, batteries, bottles/cans, etc.
• Automated Assembly Lines: Gripping, aligning, and assembling precision components.
• Packaging & Sorting: Gripping and搬运 various regularly shaped items, especially circular objects.

Summary: The High-Rigidity Choice for Heavy-Duty Centric Gripping
The MHS3-50D 3-jaw gripper perfectly solves the core矛盾 of “needing precise gripping while withstanding external forces” in heavy-duty applications through its three core technological advantages: wedge cam drive structure, ±0.01mm high repeatability, and nearly 200N strong gripping force. Its ultra-thin compact design saves installation space, the central through hole facilitates reliable workpiece release, and the built-in magnet provides intelligent control capability. Choosing the MHS3-50D means equipping your automation equipment with a rigid, precise, and heavy-load-capable “centric gripper” – an ideal choice for handling complex tasks like press-fitting, handling, and precision assembly.