Charnwood NEXUS3R 95mm Diameter, 4 Jaw Geared Scroll Chuck

4 Jaw Scroll Chuck with locking screws for using on a lathe with reverse direction.

Based on our best selling Viper range of chucks, the Nexus3R has a jaw mounting compatible with Supernova, G3 Nova and Robert Sorby Patriot Jaws. This will be of particular interest to any owners of those chucks looking for a second chuck and wanting to be able to continue using any sets of jaws they already own.

The jaws adjust with a square drive key via a geared mechanism for simple one handed operation. Self centring, high precision design. The fully enclosed body of the chuck prevents dust and chips from getting inside and plugging up the teeth of the gear mechanism. Ideal for Midi sized lathes and upwards.

The standard dovetail jaws can grip the work piece both internally or externally depending on the style and shape of the piece to be turned.
The chuck fits directly onto lathes with headstock thread size of M33 x 3.5 For other thread sizes, an optional thread adaptor is required.

We also include a wood screw which clamps into the centre of the chuck for the initial mounting of bowl blanks.

Supplied with standard dovetail jaws, wood screw, T-bar 8mm Square drive for scrolling the jaws and T-handled hex key 4mm for removing the jaws.

We have an extensive range of optional jaws and accessories available for the Nexus3R chuck.

The locking screws allow the chuck to be locked onto the lathe spindle, providing the lathe conforms to DIN800 Standard or Jet Type T38 design. A 3mm Hex key is required (not included). Reverse direction should only be used when the chuck is mounted directly onto an M33 x 3.5 spindle thread. It should not be used in reverse when using a thread adapter.

Optional thread adaptors available to suit lathes with a spindle thread size:

• 1″ x 8tpi – Product code: VIPERIA
• 3/4″ x 16tpi – Product code: VIPERID
• 1.1/4″ x 8tpi – Product code: VIPERIE
• 1″ x 10tpi – Product code: VIPERIF
• 1″ x 12tpi – Product code: VIPERIG
• M18 x 2.5mm – Product code: VIPERIH
• M20 x 2.0mm – Product code: VIPERII
• M25 x 2.0mm – Product code: VIPERIJ
• 3/4″ x 10tpi – Product code: VIPERIK
• 1.1/8″ x 12tpi – Product code: VIPERIM
• M30 x 3.5mm – Product code: VIPERIN

If your lathe size is not on this list, we do not have it.

What is The difference between Viper3R and Nexus3R?

The only difference between our 2 chucks is the position of the jaw mounting holes and the pattern on the underside of the jaw. The reason we offer the 2 is to have compatibility with other brands of chucks on the market. If you are buying a second chuck, it makes sense to have one which is compatible with any jaws & accessories you already own. If it is your first chuck: it really makes no difference which model you select.

Jaws from the Nexus3 range are also compatible with the following chucks:

• Supernova (Requires N3JS Screws)
• G3 Nova (Requires N3JS Screws)
• Robert Sorby Patriot (Requires N3JS Screws)
• Record Power SC3 (Requires N3JS Screws)
• Record Power SC4 (Requires N3JS Screws)