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The Hollow Gripper (AMAT OEM P/N 0040-95199) is a precision wafer-handling end-effector mounted to the Y-axis transfer arm of Applied Materials Quantum and xR-class ion implantation systems. Sized specifically for 200 mm substrates, it is the physical interface between the atmospheric or vacuum robot and the wafer itself, picking each substrate from a cassette, load lock or buffer station and presenting it to the implant disc or platen with the positional accuracy the downstream beamline depends on.
The “hollow” designation reflects the gripper’s construction: a lightweight, bored or relieved arm body that minimises moving mass while preserving stiffness, often routing a vacuum or mechanical clamping path through the structure so the wafer is held securely without contacting its active front surface. In an implanter, where wafers are shuttled thousands of times per shift between the load lock, the orienter and the scan station, the gripper’s repeatability and cleanliness directly govern handoff reliability and particle performance.
Because it operates at the mechanical front line of the tool, the gripper is a wear-exposed item. Worn contact pads, a bent or fatigued arm, or a degraded clamping interface translate immediately into misplaced wafers, aborted transfers and unplanned downtime. Keeping a verified replacement on hand is one of the most cost-effective ways to protect end-station availability.
The Hollow Gripper performs the final mechanical task in every wafer move: acquiring, retaining and releasing the substrate at each station in the transfer sequence. Its core functions include:
The hollow architecture is an engineered compromise between rigidity and inertia. Reducing arm mass lowers the torque demand on the robot’s drive and shortens settling time after each move, directly enabling higher wafer throughput. At the same time the bored body must resist deflection under cantilever load, so that the wafer seating plane stays flat and the placement coordinates remain stable across the full reach of the arm.
Contact pads, clamp fingers or the vacuum land on the gripper define how securely and how cleanly the 200 mm wafer is held. These surfaces must grip firmly enough to prevent slip during rapid motion yet remain compliant and low-particle to protect the substrate. Wear here is gradual but cumulative, and it is the most common reason a gripper drifts out of specification.
As the last component to touch the wafer before it reaches the scan station, the gripper has an outsized effect on end-station behaviour. When it degrades, the consequences propagate quickly through throughput and yield metrics:
Repeated wafer pick-and-place cycles abrade the contact pads, clamp fingers or vacuum land. As these surfaces polish, deform or thin, retention force falls and the seating position shifts, producing intermittent slip, placement drift and rising particle counts long before any hard fault is logged.
A collision during a recovery move, an over-travel event or simple long-term cyclic loading can bend or fatigue the hollow arm. Even a small permanent set alters the seating plane and the placement coordinates, so wafers arrive at stations slightly out of position and transfer reliability deteriorates across the whole sequence.
Where the gripper uses a vacuum or mechanical clamp routed through the hollow body, leaks, blockages, worn seals or a sticking clamp mechanism erode hold strength. The result is inconsistent retention, slow or failed acquisition and an increasing rate of “wafer not present” or “wafer not seated” sensor faults.
Replacing the Hollow Gripper is a precision task: the new end-effector must reproduce the original seating plane and placement coordinates so the robot’s taught positions remain valid. The following sequence reflects good practice and should always be performed against the relevant AMAT service documentation for your specific configuration.
Wafer-handling end-effectors are classic stock-and-swap items: low in cost relative to the downtime they cause, yet directly responsible for end-station availability. Sourcing a verified equivalent through ESCT Fab Support gives engineering teams a dependable alternative to long OEM lead times.
It is the wafer-handling end-effector on the Y-axis transfer arm. It picks each 200 mm wafer, retains it during robot motion and releases it at the next station, providing the repeatable, clean handoff the rest of the end station relies on.
No. This gripper is supplied as a new, OEM-compatible component cross-referenced to AMAT P/N 0040-95199. It is verified to match the original in form, fit and function, but it is not an original OEM part and is not sold as one.
It is configured for 200 mm substrates. The seating geometry and contact layout are specific to that diameter, so it should not be substituted for grippers built for other wafer sizes.
Watch for rising transfer aborts, intermittent wafer-not-seated faults, placement drift at one or more stations, or an increase in backside and edge particle counts. These typically point to contact-pad wear, retention loss or a distorted arm.
In most cases the taught positions should be verified, and re-teaching may be required if the new gripper produces any change in the seating plane or handoff offsets. Always confirm pick-and-place accuracy and sensor response before returning to production.
The typical lead time is around two months. Because the gripper is a wear item that directly affects end-station uptime, we recommend holding one as a planned spare rather than ordering reactively.
The Hollow Gripper (AMAT OEM P/N 0040-95199, ESCT P/N ES3033-001) is the 200 mm wafer-handling end-effector on the Y-axis transfer arm of AMAT Quantum and xR-class ion implanters. Its hollow, mass-optimised body combines stiffness with low inertia, while its contact and retention surfaces govern placement accuracy and particle performance. As a wear-exposed mechanical part, it is an ideal held spare: keeping a verified equivalent on the shelf protects end-station throughput, yield and availability against the gradual wear and occasional hard faults that eventually affect every gripper.
Disclaimer: This part is supplied by ESCT Fab Support as a new, OEM-compatible second-source component, verified to the form, fit and function of Applied Materials part number 0040-95199. It is not an original OEM part and is not sold as one. It is not manufactured by, endorsed by, or affiliated with Applied Materials, and all manufacturer names and part numbers are quoted for identification and compatibility purposes only.
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