Spindle bore

Standard bore 52 mm or 73.5mm Optional 105mm Optional 130mm

This will affect the chuck fitting. 130mm spindles do not have an internal taper. Increased bores are only offered on the SN710 & SA500 variants. 130mm is only available on SN710S variant. The 130mm bore has a parallel bore so it is not suitable for turning between centres.

Chuck fittings & spindle nose options

Camlock ISO702/II “D” Backplate DIN ISO 702/III “B” Driveplate

The chuck fitting is determined by the diameter of the spindle bore. If a larger bore is specified then a large spindle nose is required. Spindle noses are offerd in two standards, Camlock & DIN. Camlock is the American standard found on Colchester, DSG & Harrison. DIN is the preferred chuck fitting of European machine tool manufacturers & that is the only reason for it & the chucks, being a little bit less expensive. They are both safe & easy to change. The only reason to specify Camlock would be if you already have that system in your shop.

Larger spindle noses mean larger chucks & vice versa. Please order the appropriate size chuck guard from the catalogue

Toolposts

Standard 4 way toolpost Optional Genuine Multifix toolpost Rear toolpost

The Multifix toolpost is a wonderful thing. It offers convenience & superior repeatability. If you already have machines using Multifix then you will probably want to keep that system throughout the shop. If your existing machines use Dickson quick change toolposts then specify the standard toolpost & retrofit a Dickson in the UK. They go straight ontothe centre bolt where the original toolpost fits. Original Dickson & various copies of the Dickson design are available from aftermarket suppliers in the UK.If you have no preference then order a Multifix because they are stronger & more precise with a similar price tag.

Optional quick threading device

For quick disengagement & re engagemant of the half nut when screw cutting. Only works with the native leadscrewthread system. In other words inches OR metric. Not both.

This is only used in the case of very repepetitive work such as oil pipes which may be API. Then an inch leadscrewwould be necessary. Metric threads would still be possible but only in the traditional way, i.e. manually releasing the

half nut or leaving it in mesh.

Folding handles

Folding handwheels X Axis handwheel Z axis handwheel

CE marking does not permit the fitting of fixed handles because of the risk of entanglement during rapid traverse or screwcutting. Therefore CE marked machines are delivered with plain hand wheels.

Electrical conduits

The wires run in a PVC tube which is inside a galvanizedsteel helically wund flexible tube covered with a

galvanized wire braided sleeve. This hangs on a railunder the machine. It runs rapid traverse, machine lamp

& emergency stop circuits. Lasts for decades.

Optional plastic drag chain conduit. This is the samebraided hose assembly inside an additional cable chain.

Runs rapid traverse, machine lamp, emergency stopcircuits & coolant delivery pipe.

This frees up floor space under the machine.

Steadies

SN50, SA500

10 – 115mm 10 – 115mm 110 – 250mm

Set of 2 roller arms Set of 3 x roller arms Set of 3 x large roller arms

SN71, SN710S

12 – 180mm 180 – 320mm 282 – 405mm

SN 50 & 500 have identical bed profiles & centre height therefore the steadies are interchangeable. The same applies for the SN71 & SN710. The fixed & small steady shares the same diameter arms so the arms are interchangeable. The large steady & extra large steady also have interchangeable arms.

Chucks & spindle attachments

Faceplate with independent jaws. Max 250 RPM Faceplate

3 jaw scroll chuck 4 jaw scroll chuck 4 jaw Independent chuck

The 4 jaw independent chucks are not listed in the official price list. Please consult Budget Machinery before orderingchucks.

Other attachments

Longitudinal stop bracket Cross stop

Taper turning attachment. Retrofit without modification toany SN lathe

Thread cutting dial

Tailstock hand wind Toolpost grinder