Chuck Adaptor Plates, sometimes called Back Plates, are used to fit a variety of different chucks to your CNC Lathe or Turning Center. Chuck Adaptor Plates are a critical link between the machine tool and the chuck, and must be properly designed and precision machined to maintain the accuracy of your machine tool.

Lucy’s Machine Company has been making Chuck Adaptor Plates since 1972. We offer a range of configurations from A5 to A20 and D-3 to D-11 taper in sizes from 5.00” to 31.50” diameter. All Lucy’s Chuck Adaptor Plates are made using A-36 Steel Plate for strength and stability. Our Chuck Adaptor Plates can be used with any type of chuck including manual, air or hydraulic from any manufacturer.

Standard Features:

• A-36 Steel Plate Construction
• Type A5 through A20
• Type D-3 thru D-11
• Diameters from 5.00” to 31.50”
• Adaptor Plates for Manual, Air and Hydraulic Chucks
• Custom Adaptor Plates for A-Series to A-Series and A6 to A8
• 1 Week Standard Delivery with Same-Day Service Available
• Shipment to Any Destination World Wide

Easy to Order

Just call us at (323) 587-6162, Fax us at (323) 587-4820 or email us at with the make and model number of your machine tool and the size of your bar stock. We maintain an extensive database with detailed specifications for virtually every machine tool on the planet! Our Spindle Liners range from .250” I.D. to 6.00” I.D. and can be any length you need. Standard delivery is 2 to 3 days, with same-day and overnight service available. We deliver anywhere in Southern California and ship anywhere in the world!

Our Products are Custom-Designed to Fit Virtually Any Machine Tool.

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