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Big Bore CNC Lathes  

Ultimate Heavy Turning for the next Era  
TTB-40 Series offers 860mm swing over bed and maximum 205mm spindle through hole for oversized parts. The high torque output from gearhead design combined with high rigidity structure achieve excepting heavy duty turning results with high precision and stability.  
Head Stock TTB-40
Multiple choices of Spindle bores:
TTB-40A/AM Ø102mm
TTB-40B/BM Ø165mm
TTB-40C/CM Ø205mm
Independent Spindle Gear Box (TTB-40C/CM) TTB-40
The 3-step gearhead design is capable of 4,500Nm torque output to meet the heaviest cutting conditions.
TMT Hydraulic Turret TTB-40
The hydraulic turret uses NOP hydraulic index motor driven and high precisioncurvic coupling, permitting accurate tool positioning.


Programmable Tailstock w/Turning Center TTB-40
MT5 live quill design allows the dead center to turn with the workpiece to reduce friction and improve workpiece accuracy and load capacity.
BMT Power Turret(TTB-40M Series) TTB-40
The highly rigid BMT turret has large torque output and stronger tool locking mechanism to handle heavier cutting conditions while improving tool interference. The BMT turret is ideal for heavy turning and milling applications.
Spindle Oil Chiller (TTB-40C/CM) TTB-40
All spindle bearing and gears are cooled through spindle cooling system to maintain thermal growth and prolong spindle and gearhead life.
Front and Rear Chuck(OPT)  
Chucks are mounted at front and rear of spindle, ensuring high stability when workpieces cutting long bar. Specially designed for cutting large pipes and bar material.


Manual/Hydraulic Steady Rest(OPT) TTB-40
The steady rest is ideal for long bar turning application and can be manually adjusted to reduce the vibration and maintain machining stability.
Manual/ Auto Tool Presetter(OPT) TTB-40
The tool presetter shortens tool set up time and can easily measure tool wear to ensure machining accuracy.
TTB-40 Series
Standard Option
FANUC 0i-T controller Air Chuck
Hollow Hydraulic 3-jaw Chuck 12"/15"/18"B Manual Rear Chuck
Hydraulic Turret V12 (TTB-40 Series) Manual/Auto Tool Presetter
BMT-65/75 Power Turret (TTB-40M Series) Front Air Blast
Gearhead Spindle (TTB-40C/CM Series) Oil Mist Collector
Gearbox (TTB-40A/B Series) Oil Skimmer
Foot Switch Control for Chuck High Pressure Cutting Coolant Motor
Programmable Tailstock Barfeeder Interface
Coolant System Bar Feeder
Automatic Lubrication System Air Conditioner
3-color Warning Lamp Transformer/ Voltage Stabilizer
Working Lamp  
Tool Box with Tools  
Chip Conveyor & Chip Cart  
Operation/Maintenance Manual  
Heat Exchanger  
Manual Guide 0i  
Auto Power Off (M30)  
Dynamic Graph Simulation  
Rigid Tapping  
RS-232 Interface  
Memory Card Interface(PCMCIA)  

■ Standard and optional equipments listed as above are for reference only.
 The correct information is dependent on customer's order.

 Description UnitTTB-40 Series
  Headstock Type   BM
Controller - 0i-T
CAPACITY Swing over bed mm Ø860 Ø860
Swing over saddle mm Ø720
Max. turning diameter mm Ø650 Ø650
Max. working length mm 1385 2135
Distance between centers mm 1640 2390
Bar capacity mm Ø116
Chuck size inch 15" (opt. 15"B)
STROKE X-axis stroke mm 325
Z-axis stroke mm 1535 2285
FEEDRATE Axial rapid feedrate m/min X:10, Z:12 X:10 Z:12
Cutting feedrate(X/Z) mm/min 10000
SPINDLE Spindle speed rpm 1650
Spindle nose - A2-11
Spindle bore diameter mm Ø165
TURRET Turret type and storage capacity - BMT-65
Square tool dimension mm 25x25
Boring tool dimension mm Ø40
M-axis tool speed rpm 4500
M-axis tool motor output(cont./15 min) KW(HP) 3.7/5.5 (5/7.3)
MOTOR Spindle motor output (cont./30 min.) KW(HP) 18.5/22 (25/30)
Axial servo motor output KW(HP) X:4.0, Z:4.0
(X:5.3, Z:5.3)

■ All specifications, dimensions and design characteristics are subject to change without prior notice.