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Machine Design

Compact Positioning Table

The PZA25 elevator positioning table uses a precision-machined wedge and recirculating bearing mechanism.

The wedge converts horizontal movement from a ball screw into vertical elevation of the table top (up to 25 mm), with positional feedback provided by an internal linear or rotary encoder. Vertical position resolution using the 25-nm linear encoder is 0.025 mm. A frameless motor eliminates the need for a motor coupler and an external motor, keeping the table compact. All signals go through an external cable instead of a connector on the table.

Primatics Inc.,
Eastgate Business Park, 33877 Eastgate Circle Blvd., Corvallis, OR 97333,
(888) 754-3111,

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