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Machine Tool Manuals Machine Tool Catalogues Belts Accessories Books Quill-return Springs |
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Size 001 = 0.5 inches (13 mm) deep by 1.5 inches (37 mm) in diameter over the coils. For lighter-duty machines with up to 0.5 inch drilling capacity and as originally as fitted to the Fobco "Star" Drils |
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Size 002 = 0.75 inches deep (19 mm) by 2.45 inches (62 mm) in diameter over the coils A much heavier spring for drills and millers with a 1-inch drilling capacity and originally intended for use on the Fobco 7/8 and 10/8 drills |