I've been getting my info on lathes.co.uk
Repair Parts
Although Sanford-produced parts are no longer available, some items are commercially available - or easily adapted from substitutes:
Spindle wrench: from www.armstrongtools.com - model #34-101.
Flat belts: from http://www.wmsopko.com/products.htm.
Bearings: check for the type needed, available through numerous suppliers.
Leadscrews: can be machined from Acme threaded stock. 5/8" - 10 Acme, left-hand for the cross feed shaft and right-hand for the vertical leadscrew.
Cross feed nut insert: this can be machined from a larger 5/8" x 10, left-hand Acme available from McMaster-Carr.
Table rack and pinion: the pinion is Boston Gear Part NB16b, 16-tooth, 16-diametral pitch, 14 ½-degree pressure angle, 1/2"-bore and matching rack; available from McMaster-Carr. You will have to drill and counterbore the mounting holes as they go through the teeth, not on the side. Be sure to counterbore deeply enough or the gear will hit the cap screws - those on the Sanford having thinned heads.
Shaft bearings - bushings or needle bearings: replace with the same from McMaster-Carr
Top bevel gears: Boston Gear part L149Y-G, 32-tooth, 16-diametral pitch, 20-degree pressure angle, ½"-bore. On the Model SGm the vertical leadscrew gear needs to have the hub machined to diameter and threaded for 5/8" - 10 Acme right-hand (available from McMaster-Carr).
Repair Parts
Although Sanford-produced parts are no longer available, some items are commercially available - or easily adapted from substitutes:
Spindle wrench: from www.armstrongtools.com - model #34-101.
Flat belts: from http://www.wmsopko.com/products.htm.
Bearings: check for the type needed, available through numerous suppliers.
Leadscrews: can be machined from Acme threaded stock. 5/8" - 10 Acme, left-hand for the cross feed shaft and right-hand for the vertical leadscrew.
Cross feed nut insert: this can be machined from a larger 5/8" x 10, left-hand Acme available from McMaster-Carr.
Table rack and pinion: the pinion is Boston Gear Part NB16b, 16-tooth, 16-diametral pitch, 14 ½-degree pressure angle, 1/2"-bore and matching rack; available from McMaster-Carr. You will have to drill and counterbore the mounting holes as they go through the teeth, not on the side. Be sure to counterbore deeply enough or the gear will hit the cap screws - those on the Sanford having thinned heads.
Shaft bearings - bushings or needle bearings: replace with the same from McMaster-Carr
Top bevel gears: Boston Gear part L149Y-G, 32-tooth, 16-diametral pitch, 20-degree pressure angle, ½"-bore. On the Model SGm the vertical leadscrew gear needs to have the hub machined to diameter and threaded for 5/8" - 10 Acme right-hand (available from McMaster-Carr).