Mini Mill CNC Lead-screw kits
(See also G-Code
Designed for the
Sieg X2, but should be suitable for other similar mini mills with different branding e.g.
Harbor Freight Central Machinery (44911) , Cummins Toolnow (7887)
Homier Speedway (03947), Chester Conquest , Sealey (Sm2502) ,Grizzly
These, and other mini mills, are said to be the same as the Sieg X2.
Whatever your make, please see Basic Checking Dimensions below before purchasing.
The parts in this kit have been thoroughly tested for many hours on a working conversion. Designed to be easily
fitted, with minimum modifications to the
machine, with no loss of travel in X, Y or Z.
Price, Contents, Materials,
Design & Fitting details below)
Basic Mini Mill Checking dimensions (in mm)
(X) Table (excluding leads-screw supports): 385 long x 92 wide x 31 deep, 220 travel, with 72 hole centres for
lead-screw support fixing (M6)
(Y) Saddle: 150 long x 93 wide x 48 deep, 100 travel
(Y) Base: 50 hole centres for lead-screw support fixing (M6)
If these sizes do not exactly match your machine please
self-assembly kit, shown in the pictures below, comes with all the parts
required to convert the X, Y and Z-axes to accept NEMA23 stepper motors, and
Y & Z lead-screws with adjustable anti-backlash nuts
Y & Z lead-screw supports/bearings
Y & Z NEMA 23 stepper motor mounts
necessary metric fixing screws/nuts/washers for fitting the kit and your
chosen stepper motors
detailed step-by-step installation manual with pictures and drawings.
Supplied in MSWord format. (Printed paper copies available
on request, at £9.99 each including P&P)
are mild-steel, 14x3 trapezoidal, to ISO 2901/2903 (DIN103). With 6.35mm
(1/4”) ‘Dee’ coupling journals.
motor mounts are made from black Delrin®, which is
an acetyl resin, engineering plastic, often used as a metal substitute,
of operating in temperatures in excess of 90oC, and is
resistant to petroleum-based substances.
lead-screw is mounted in sealed ball races, with added thrust
nuts are made from white Delrin®, which is a highly effective
bearing medium with a low coefficient of friction, extremely
wear-resistant, capable of operating in temperatures in excess of 90oC,
and is resistant to petroleum-based substances.
Although lubrication improves performance only intermittent lubrication
have been designed using state-of-the-art 3D CAD software. The main parts supplied are all CNC machined from solid
tested, sturdy assemblies, that match the torque of the drive motors,
kit is designed to suit the machine, and it's intended uses. However, like the machine, is not really suitable for
23 motors (not supplied, up to 3Nm torque, 1.8Nm min
assumed to have M5 clearance fixing holes. Motor spacers have been sized
to suit Lovejoy L050 couplings, giving a 13mm gap between the end
of the motor shaft and the end of the lead-screw. Other flexible
couplings may be OK, but check compatibility before buying.
are adjustable for wear, and when correctly set will give less than 0.05mm
backlash (which can be compensated for in Mach3® software etc)
kit is designed to fit with the minimum modifications, by utilising
existing fixing holes etc. However, 3 x M6 holes and 2 x M5 holes need
to be drilled and tapped to fit the Z-Axis lead-screw, and a small
modification to the saddle is required to fit the X-Axis lead-screw.
conversion will disable the manual operation of the milling machine.
However, if stepper motors with double shafts are employed then some
degree of manual use will be possible. No modifications,
required for the kit, will prevent the parts removed from being
refitted to re-create the original manual machine, if ever the need
safety reasons we recommend that a suitably qualified person fit the
price for each kit
Stocks Last (17/June/2010)
£195.00 + VAT +
(US $285.00 +P&P, 235 euro + P&P**)
P&P cost £17.50 to anywhere in the UK - Next day Delivery
**Will post to other countries - please contact us for options, and costs.
Telephone +44(0)1480 476670