LittleMachineShop.com is the  premier source of tooling, parts, and accessories for bench top machinists.
The premier source of tooling, parts, and accessories for bench top machinists.
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Conversion Kits

Mini lathe extension kits, mini mill conversion kits.

LittleMachineShop.com has bed extension kits for mini lathes, air spring kits for mini mills and more. Metric threading kits let you turn metric threads on your mini lathe. All of our conversion kits come with complete step-by-step instructions.

Air Spring Conversion Kit
$39.95
Automatic Tool Changer, 3MT Mini Mill
  • Completely automates tool changing
  • Great for CNC mini mills
  • Works with the Tormach tooling system
  • Fits all 3 Morse taper mini mills
$1499.00 On Sale

Regularly $1699.00

Automatic Tool Changer, R8 Mini Mill
  • Completely automates tool changing
  • Great for CNC mini mills
  • Works with the Tormach tooling system
  • Fits all R8 mini mills
$1499.00 On Sale

Regularly $1699.00

Bed Extension Kit 12"
$119.95
Bed Extension Kit 14"
$149.95
Belt Drive Conversion Kit, Micro Mill
  • No more broken drive gears
  • Much quieter operation
  • Spindle speed up to8000 RPM
  • Ideal for manual and CNC mini mills
  • Made by JD-CNC in the USA
$154.95
Belt Drive Conversion Kit, Mini Mill
  • No more broken drive gears
  • Much quieter operation
  • Spindle speed up to 4300 RPM
  • Ideal for manual and CNC mini mills
$129.95
Change Gears Set, Metal
  • Module 1 Metric gears
  • Bore 12 mm
  • Keyway 3 mm
  • Width 8 mm
$99.95
CNC X and Y-Axis Motor Mounts and Screws for Mini Mill
  • Mounts NEMA 23 motors on X- and Y-axis
  • Fits all SIEG X2 mini mills
  • Adds ball thrust bearings on Y-axis
  • Couplings eliminate backlash
  • Includes acme feed screws with brass anti-backlash nuts
$249.95
CNC Z-Axis Motor Mount and Screw for Mini Mill
  • Mounts NEMA 23 motor on Z-axis
  • Fits all SIEG X2 mini mills
  • Adds ball thrust bearing on Z-axis
  • Coupling eliminates backlash
  • Includes acme feed screw with close tolerance brass nut
$189.95
Control Box Assembly, Mini Lathe
  • For 7x10 and 7x12 Mini Lathe
$132.95
Control Box Kit, Mini Lathe 230V
  • For 7x10 and 7x12 Mini Lathe
  • 220-240V 50-60Hz
$149.95
Extended Y-Axis Travel Kit, Micro Mill
$105.95
Long Table Kit, Micro Mill
  • Table is 400 mm x 145 mm
  • X-Axis travel is 330 mm
  • Provides 150 mm more X-axis travel
$84.95
Long Table Kit, Micro Mill, Metric
  • Table is 400 mm x 145 mm
  • X-Axis travel is 330 mm
  • Provides 150 mm more X-axis travel
$89.95
Metal Gear Kit for Mini Lathe & Mini Mill
  • Replaces plastic spindle gears with metal gears
  • Fits mini lathes and 3MT mini mills
  • Includes installation tools
$71.60
Metal Gear Kit, Mini Lathe Complete
  • Changes every plastic gear on the mini lathe to metal
  • Metal change gear set
  • Metal 2-speed transmission gears
  • Metal lead screw drive gears
  • Metal 80-tooth gears
$195.95
Metal Transmission Gear Kit, Mini Lathe & 3MT Mini Mill
  • Replaces both plastic transmission gears with metal
  • Fits mini lathes and 3MT mini mills
$39.95
Metal Transmission Gear Kit, R8 Mini Mill
  • Replaces both plastic transmission gears with metal
  • Fits R8 mini mills
$39.95
Metric Threading Kit 10"
$47.95
Metric Threading Kit 12"
$47.95
Metric Threading Kit 14"
$47.95
Mini Lathe 20 TPI Feed Screw Parts
$54.95
Mini Mill 20 TPI Feed Screw Parts
$57.75
Mini Mill Metric Kit
$59.95
Mini Mill Power Feed Kit, 16 TPI
$179.95
Mini Mill Power Feed Kit, 20 TPI
$179.95
Mini Mill Power Feed Kit, No Feed Screw
$159.95
Mini Mill Power Feed Kit, No Feed Screw 230V
  • 220-240V 50-60Hz
$179.95
Motor Controller Upgrade Kit
$144.95
Motor Controller Upgrade Kit, Harbor Freight Rocker Switch
  • Motor controller
  • Speed control potentiometer with safety switch
  • 3-pole F/O/R switch with safety interlock
  • Installation instructions, with wiring diagrams
$164.95
Power Drawbar, R8 Mini Mill
  • Great for CNC mini mills
  • Works with the Tormach tooling system
  • Fits all mini mills with R8 spindle
$349.00
Power Switch Upgrade Kit
  • Heavy duty Cherry brand switch
  • Five times the rated life of the standard switch
  • Switch rated at 16 A at 120/250 VAC
  • No soldering required to install
$4.95
Spindle Conversion Kit, 3MT
$54.95
Spindle Conversion Kit, R8
$54.95
Spindle Lock Kit
$24.95
Spindle Repair Tools
$59.95
Spindle, High Speed for Mini Mill
  • 5,000-20,000 RPM
  • Good for both manual and CNC operation
  • Use small cutters at the appropriate cutting speeds
$195.95
Tailstock Cam Lock Kit
$29.95
Tap & Tap Drill Kit
  • M3x0.5, M6x1, and M8x1.25 HSS metric hand taps - plug style
  • 2.5 mm, 5.0mm, and 17/64" HSS 118° point jobber length drills
$19.95
Tilting Spindle, Y-axis travel Kit, Micro Mill
$169.95
Tweaks & Enhancements Kit™, Mini Lathe
  • Several small items to make your lathe work better and last longer
  • Easier gib and saddle retainer adjustment
  • Fewer busted knuckles
  • Quicker gear cover removal
  • Fewer tailstock clamp jams
$19.95
Tweaks & Enhancements Kit™, Mini Mill
  • Several small items to make your mini mill work better and last longer
  • Easier gib adjustment
  • Fewer stripped locking levers
  • Easier backlash adjustment
  • Cleaner T-slots
$29.95
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