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Lathe swing and distance between centers: reading a wood lathe's specs

WEN says lathes are rated by their swing, which is twice the distance between the spindle's centerline and the bed. WEN's LA3421 uses an MT1 spindle and tailstock taper, and RIKON machines the ends of its 70-1420VSR bed so extensions can be added.

What does lathe swing mean?

WEN explains that lathes are rated by their swing, which is twice the distance between the spindle's centerline and the bed. (WEN Products)

Swing over the tool rest is smaller than swing over the bed: RIKON lists 14" over the bed and 10-5/8" over the tool rest for the 70-1420VSR. (RIKON Power Tools)

Taikra doesn't rank or test tools; every figure here is from the maker's own page or manual, linked.

What is distance between centers?

WEN describes distance between centers as the maximum workpiece length that can be turned between the center inserts in the headstock and tailstock. (WEN Products)

A lathe's name often rounds these figures, so the table lines on each maker's page are the ones to compare.

Can a lathe bed be extended?

WEN says some of its lathes accept bed extensions, additional bed lengths that bolt onto the end. (WEN Products)

RIKON says the 70-1420VSR bed has machined ends and front for adding extensions, and lists a 13-1/2" extension (70-903) and a 24" extension (70-901) that expand the working distance to 44". (RIKON Power Tools)

Spindle thread and Morse taper

RIKON lists a 1-1/4" x 8 TPI spindle nose and MT2 tapers in both the headstock and tailstock of the 70-1420VSR. (RIKON Power Tools)

WEN's mini LA3421 uses an MT1 spindle and tailstock taper. (WEN Products)

Variable speed and motor size

WEN explains that variable-speed lathes use an electronic controller to vary spindle speed to any number within a range. (WEN Products)

Setup and operating instructions are in each maker's manual.

Lathe swing and distance between centers: questions answered from the sources

How is lathe swing measured?

WEN says swing is twice the distance between the spindle's centerline and the bed.

Source: How to Choose a Lathe

What spindle thread does a midi lathe have?

RIKON lists a 1-1/4" x 8 TPI spindle nose for its 14" x 20" Midi 70-1420VSR.

Source: Model 70-1420VSR: 14" x 20" Midi VSR Lathe - Rikon Power Tools

Can I turn longer pieces on a small lathe?

Some lathes accept bed extensions; RIKON lists extensions that take the 70-1420VSR's working distance to 44".

Sources: Model 70-1420VSR: 14" x 20" Midi VSR Lathe - Rikon Power Tools; How to Choose a Lathe

Sources

  1. How to Choose a Lathe — WEN Products
  2. Model 70-1420VSR: 14" x 20" Midi VSR Lathe - Rikon Power Tools — RIKON Power Tools
  3. WEN LA3421 3.2-Amp 8-Inch by 13-Inch Variable Speed Mini Benchtop Wood Lathe — WEN Products