New 2025 Clausing CT618CNC – 15” Swing Over Bed, 18” Between Centers, CNC Toolroom Lathe

Features and Benefits:
Clausing Toolroom lathes can be used for 5C collet work and precision finishing operations. Spindle run out is within 50 millionths of an inch or better. Infinitely variable speed is the industry standard for lathes. The quality built into every machine translates into real long-term performance for your application.

CT618DT toolroom lathe with Digital Threading Control replaces traditional threading gearboxes with microprocessor-controlled, servo-driven leadscrew, in the past when a machinist was faced with a workpiece that called for thread pitch not supported on a conventional lathe, he had to locate and order a custom gear set and take the time to swap out the gears in the gearbox. This is not economically justifiable unless the volume is large enough. The CT618DT toolroom lathe’s design eliminates this time-consuming workaround. With the new digital threading system, the user’s threading wishes can be easily and immediately realized. Type in the desired thread pitch on the numeric keypad on the touch screen LCD control panel and then start the threading cycle as on other conventional lathes.

The system controls and synchronizes the main spindle rotation and Z-axis feed rate to produce a precise threading cycle for the given TPI or mm thread pitch. Besides being able to cut thread pitches not previously available on manual lathes, noise and vibration are significantly reduced because there are actually no more gears in the gearbox.

The CT618DT already has a custom IC and an LCD panel to enable threading control, the next logical step is to integrate DRO functions for an all-in-one versatile machine. DRO capabilities are built-in and come standard at no extra charge. This features linear scales on the X and Z axes from Mitutoyo.

Three phase voltage refers to three individual lines that connect to and run voltage through the motor. Each line alternates in a sequence as it reaches its voltage peak. This provides for a more stable flow of voltage and more horsepower to the machine.

Specifications:
Machine Style..........Toolroom Lathe
Spindle Speed Control..........Inverter Variable Speed
Spindle (Hp)..........3 (optional 5)
With Chuck (inch)..........6
With Expanding Collets (inch)..........3
With Round 5C Collets (inch)..........1-1/16
With Hexagon 5C Collets (inch)..........7/8
With Square 5C Collets (inch)..........3/4
With Step Chuck (inch)..........1-1/16 to 6
Spindle Nose Diameter (inch)..........2.18
Spindle Nose I.D. / O.D...........5C (10°)/4° Taper
Spindle Speeds (rpm)..........50-4000
Hole Through Spindle (inch)..........1-1/4
Bar Stock Diameter 5C Collet (inch)..........1-1/16
Distance between Centers (inch)..........17.99
Swing Over Bed (inch)..........14.96
Swing Over Carriage (inch)..........9.05
Swing Over Cross Slide (inch)..........5.98
Carriage Power Feed Range (variable)..........0.314 – 7.0 in/min
Cross Slide Power Feed Range (variable)..........0.196 – 4.0 in/min
Cross Slide Travel (inch)..........5.98
Quick Action Compound Slide Travel (in)..........0.098
Compound Slide Travel (inch)..........2.99
Coolant Pump (Hp)..........1/8
Feed Inverter (Hp)..........1/2
Tailstock Quill Travel (inch)..........3.7
Range of Threads (inch)..........3.175 – 500
Range of Threads (mm)..........0.05 – 6.55
Voltage Required..........230/460
Phase..........3
Machine Footprint (LxWxH) (inch)..........81 x 40 x 65
Machine Weight (lbs.)......... 2,640

Machine Features:

• 18” between center distance
• Digital Threading Control replaces traditional threading gearboxes with microprocessor-controlled, servo-driven leadscrew
• Powerful 3 Hp 50-4000 rpm spindle motor with current vector inverter drive, increases low end torque (optional 5 Hp 50-6000 rpm)
• Flat panel LCD displays shows spindle rpm and tool feed rate to let the operator easily select best turning conditions and integrated DRO functions
• LCD displays electric current value to easily check for turning overloads
• Rapid retract function shortens threading cycle
• Circular accuracy to 50 millionths of an inch
• Full bearing carriage with turcite-B coated slideway bearing material between carriage and bed
• Fast lever collet chucking with one single movement
• The spindle is mounted on high precision preload angular contact ball bearings eliminating radial end play
• Solid hardened and ground alloy tool steel bed
• A one year warranty backed by Clausing Service Center dedicated to support our customers with parts and service