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CNC Big Bore Lathes
STF-55

This is a high precision CNC flat bed lathe with FANUC Oi-TD control. The STF series is available with option of 9", 12" or 15" spindle bore, 37.38"- 59.84" swing over bed, bed width of 31.88"and the spindle motor is available up to 30 HP. 

The hardened and ground bedways are made from high quality Meehanite castings. The spindle drive has 4 steps to deliver full power at all speeds. Bedways and ballscrews are centrally lubricated with low level alarm. Headstock is equipped with heat exchanger to disperse heat and maintain spindle accuracy. Full length chip conveyor and enclosed splash guard are all standard accessories.

  • This is a heavy duty precision CNC lathe that can function at full horsepower during low and high speeds. 
  • The large spindle bore and wide bedways are ideal for big parts and large mold work pieces. 
  • This machine is available with option 9", 12" or 15" spindle bore, 37.38"- 59.84" swing over bed and bed width of 31.88".
  • The hardend and ground bedways are made from high quality Meehanite castings.
  • The spindle drive has 4 steps to deliver full power at all speeds.
  • The bedways and ballscrews are centrally lubricated with low level alarm.
  • The headstock is equipped with a heat exchanger to disperse heat and maintain spindle accuracy.
  • A full length chip conveyer and enclosed splash guard are all standard accessories.
CNC Flat Bed Lathe STF-44 STF-50 STF-55 STF-60
Capacity
Max Swing Over Bed 44.09" (1120) 50.4" (1280) 55.91" (1420) 59.84" (1520)
Swing Over Cross Slide 27.56" (700) 35.43" (900) 39.37" (1000) 43.31" (1100)
Distance Between Centers 40" (1016)
Bed
Width of Bed 31.88" (810)
Length of Bed 135.83" (3450)
Bed Way 2 V, 2 Flat Ways
Headstock
Spindle Bore 5.98" (152mm) (Opt: 9", 12", 15")
Spindle Taper MT #6
Spindle Nose A2-11 (Opt. A2-15, A2-20)
Range of speeds (44.1") 4-420 rpm (may vary by chuck size or motor HP)
Range of speeds (>44.1") 4-350 rpm (may vary by chuck size or motor HP)
No. of Spindle Speeds 4 steps of gear, command by M code, hydraulic driven
Travel
X-Axis Travel 19.7" (based on 4 way hyd turret installed on carriage)
Z-Axis Travel 39.37"
Diameter of X-Axis Ball Screw 40 mm
Diameter of Z-Axis Ball Screw 63 mm
Feed
X, Z-axis rapid feed rate 196.85"/min (5000 mm/min)
X,Z-axis cutting feed rate 118.11"/min (3000 mm/min)
OP-Turret
Turret Type 4 tools (H4) 8 tools (V8), 12 tools (V12), VDI (coolant access)
Tool Shank/Numbers 1.23" x 1.23", 1.57" x 1.57" (40mm x 40mm)
Tool Holder Bore Diameter 1.97"
Motor
Spindle Motor 30 HP
X-axis Servo Motor 4 HP (Fanuc AC servo)
Y-axis Servo Motor 5.5 HP (Fanuc AC servo) 10 HP (Fanuc AC servo)
Hydraulic Pump 2 HP (1.5 kw)
Coolant Pump 1.7 HP (1.275 kw)
Control
Control Fanuc Oi Control

Standard Accessories

  • Spindle 4-steps speed auto change
  • XZ-axes auto lubrication system
  • XZ-axes with Turcite-B
  • XZ-axes C3 ball screw
  • Hydraulic 4-way tool turret H4
  • Rear Chain type Chip conveyor
  • Coolant system
  • Fully enclosed splash guard
  • Heat exchanger
  • Electron hand wheel
  • Alarm lamp for working and cutting finish
  • Work lamp
  • Dead center
  • Level pads
  • Tools and tool box
  • Operation manual
  • RS-232 interface
  • Standard packing pallet

Optional Accessories

  • Transformer 55KVA
  • Transformer 60KVA
  • 3-jaw scroll strong chuck (direct mounted) A2-11-20" (500mm)
  • 3-jaw scroll strong chuck (direct mounted) A2-11/15-25" (630mm)
  • Hydraulic 3-jaw wedge type through-hole power chuck 18"
  • Hydraulic 3-jaw wedge non through-hole power chuck 18"
  • 4-jaw independent chuck 32" (810mm, A2-11)
  • 4-jaw independent chuck 40" (1000mm, A2-11)
  • 4-jaw independent chuck 50" (1250mm, A2-11)
  • Face plate with 4-jaw, A2-11-32"
  • Face plate with 4-jaw, A2-11-40" (grip range 150-900mm)
  • Face plate with 4-jaw A2-11-50" (grip range 150-1150mm)
  • Steady rest 16" (bearing type, grip range 60mm-400mm)
  • Steady rest 24" (bearing type, grip range 380mm-600mm)
  • Follow rest (grip range 30-150mm)
  • Boring attachment for bar diagram 120mm
  • Spindle oil chiller 12000BTU
  • Hydraulic turret V-8 tools - boring toolholder 50mm-3 pcs, facing toolholder 32x32-1 pcs, 40, 32, 20,  16, 12, 10mm to fit boring toolholder
  • Hydraulic turret V-12 tools - boring toolholder 50mm-3 pcs, facing toolholder 32x32-1 pcs, 40, 32, 20,  16, 12, 10mm to fit boring toolholder
  • Air conditioner
  • Extra charge for spindle bore changed to 9" (230mm) fit to spindle nose A2-15
  • Extra charge for spindle motor α30 (30KW/40HP) instead of α22
  • Extra charge for spindle bore changed to 15" (380mm) fit to spindle nose A2-15
  • Extra charge for spindle motor α40 (37KW) instead of α22 (22KW/30HP)
  • Dual chuck system for spindle bore 9" (230mm/A2-15), Rear chuck adaptor for spindle bore 9"/A2-15, 3 jaw scroll chuck A2-15-25" (bore 230mm, direct mounted)
  • 4-jaw independent chuck A2-15-25" (bore 230mm, direct mounted)
  • 4-jaw independent chuck A2-15-24" (bore 230mm, direct mounted)
  • Dual chuck system for spindle bore 15" (380mm/A2-20), Rear Chuck Adaptor for spindle bore 15"/A2-20
  • 3-jaw scroll chuck A2-20-32" (OD: 750mm, ID: 380mm, direct mount)
  • 4-jaw independent chuck A2-20-32" (ID: 380mm)
  • 4-jaw independent chuck A2-20-36" (ID: 380mm)
  • 4-jaw independent chuck A2-20-40" (ID: 380mm)
  • Manual guide I for 8.4" LCD monitor
  • Manual guide I for 10.4" LCD monitor

Please contact our parts department at 310-370-5990.

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