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CNC Big Bore Lathes
STB-44

This is a high precision CNC flat bed lathe with FANUC Oi-TD control. The STA series is available with option of 6", 9", 12" or 15" spindle bore, 44.1" swing over bed and 59" to 236" distance between centers. The bed width is 32" and the spindle motor is available up to 60 HP.

The CNC Big Bore Lathes feature a unique design of one piece casting base that allows heavy cutting with high precision. The hardened and ground bedways are made from high quality Meehanite castings with internal ribbings for vibration dampening, heat distortion prevention and long lasting stability. There are 4 levels of geared spindle speeds to deliver full torque under various speeds. Change of each level is commanded by M code, operated hydraulically. 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.

Features

  • 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 of  6", 9", 12" or 15" spindle bore, 44.09" swing over bed and 59" to 236.22" distance between centers.
  • 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 Heavy Duty Lathe STB-38 STB-44 STB-50 STB-55 STB-60 STB-65
Capacity
Max Swing Over Bed 37.4" (960) 44.1" (1120) 50.4" (1280) 55.9" (1420) 59.8" (1519) 65.3" (1658)
Swing Over Cross Slide 23.6" (600) 30" (760) 33.38" (860) 39.3" (998) 43.3" (1100) 48.8" (1239)
Distance Between Centers 59" (1500), 78.74" (2000), 118.11" (3000), 157.48" (4000), 196.85" (5000), 236.22" (6000)
Bed
Width of Bed 32" (810)
Length of Bed 134" (3403), 154" (3911), 193" (4902), 232" (5982) 272" (6908), 311" (7899)
Bed Way 2 V, 2 Flat Ways
Headstock
Spindle Bore 6" (Opt: 9", 12", 15")
Spindle Nose A2-11 (Opt: A2-15, A2-20)
Range of speeds (5.98" bore) 6-500 rpm (may vary by chuck size or motor HP)
Range of speeds (6"-15" bore) 7-350 rpm (may vary by chuck size or motor HP)
No. of Spindle Speeds 4 steps/Hydraulic
Spindle Taper MT 6
Travel
X-Axis Travel Hydraulic Turret: 23.62", H4-600mm
Z-Axis Travel 59" (1500), 78.74" (2000), 118.11" (3000), 157.48" (4000), 196.85" (5000), 236.22 (6000)
Diameter of X-Axis Ball Screw 32 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 rapid 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", Opt: 1.57" x 1.57"
Tool Holder Bore Diameter 1.97"
Tailstock
Quill Diameter 7.87" (200)
Quill Travel 11.8" (300)
Quill Taper MT6
Body Movement Attached to saddle (std), or hydraulic (opt)
Body Lock-Type Manual (OP: Hydraulic Type)
Quill Movement Manual (std), Motorized (opt)
Motor
Spindle Motor 30HP (std, Fanuc alpha 22), 40 HP (opt), 60 HP (opt)
X-axis Servo Motor 4 HP (3 KW)
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-TD

Standard Accessories

  • FANUC Oi-TD Controller
  • Spindle 4-steps speed auto. change
  • XZ-axes auto. lubrication system
  • XZ-axes with Turcite-B
  • XZ-axes C3 ball screw
  • Rear chain type chip conveyor
  • Manual tailstock MT#6
  • Steady rest 16"
  • Coolant system
  • Full enclosed splash guard
  • Heat exchanger
  • Dead center (2 piece set)
  • Tools & tool box
  • Operational manual
  • Packing pallet
  • Tailstock interference protection
  • Electronic hand wheel (MPG, Manual Pulse Generator)
  • Alarm lamp for working & cutting finish
  • Work lamp
  • Level pads
  • RS-232 interface

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 4-way turret H4 (Square dia. 250, tool shank 32x32mm)
  • 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
  • Tailstock with hydraulic quill
  • Tailstock base hydraulic with lock bolt
  • Air conditioner

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

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