High Precision CNC Roll Turning Lathe for Metalworking Projects

Product Description

Machine Picture

Machine Introduction

The CK84 series CNC roll lathe features a box-type bed structure made from high-toughness Meehanite cast iron, using integral one-piece casting technology. This ensures excellent overall rigidity, making the lathe suitable for both heavy-duty rough machining and high-speed precision finishing.

The bed guideways adopt a three-guideway combination structure. The moving guideway of the tool post uses a one-V, one-flat design, while the guideways for the tailstock, steady rest, and auxiliary chuck use the same structure. The middle flat guideway is shared between both systems but offset to avoid interference. This design allows the tool post to move freely along the entire length of the bed without obstruction from the tailstock, steady rest, or sub-spindle. The guideway width is 1450 mm, ensuring high stability and rigidity during the turning of long shaft-type workpieces.

The headstock is designed as an integrated box-type structure, made from high-grade HT300 premium gray cast iron, offering high rigidity. The large-diameter spindle is supported by precision heavy-duty bearings in a two-point configuration, providing stable rotation for both heavy cutting and fine finishing.

The primary sliding guideways for feed motion are coated with TSF soft belts, significantly reducing friction and improving servo responsiveness. This ensures excellent positioning accuracy and repeatability. The cross feed (X-axis) is driven by an AC servo motor mounted at the front of the saddle, which transmits power via a German Alpha reducer and flexible coupling, directly connected to a precision ground C3-class ball screw, enabling stepless rapid traverse and feed motion.

 

Machine Specifications

 

 

Item	Unit	CK8463	CK8480	CK84100	CK84125
	CAPACITIES
Swing over bed	mm	630	800	1100	1250
Max turning diameter	mm	340	480	680	830
Max workpiece length	mm	3000/4000/5000/6000/8000	3000/4000/5000/6000/8000	4000-20000	4000-20000
Max turning length	mm	2800/3700/4700/5700/7700	2800/3700/4700/5700/7700	3800-11800	3800-11800
Span of guideway	mm	1100	1100	1450	1450
Max weight of workpiece	T	2	3	8/16/20/25	8/16/20/25
	FEED
X-axis travel	mm	450	450	450	450
Z-axis travel	mm	2800-7700	2800-7700	3800-11800	3800-11800
X/Z-axis rapid traverse	mm/min	3000/6000	3000/6000	3000/6000	3000/6000
Min. feed increment of X/Z-axis	mm	0.001	0.001	0.001	0.001
	SPINDLE
Spindle speed (stepless)	rpm	8-350	8-350	5-315	5-315
Spindle nose	-	A2-15	A2-15	A2-15	A2-15
Spindle bore diameter	mm	100	100	100	100
Taper of spindle bore	-	φ120	φ140	φ140	φ140
Taper of spindle motor	-	MT-6	MT-6	MT-6	MT-6
Spindle motor power	kW	AC30	AC30	AC30	AC30
Manual 4-jaw chuck	-	φ500	φ500	φ800	φ1000
	TOOL POST
Number of tool stations	-	V4 (4-position electric turret)	V4 (4-position electric turret)	V4 (4-position electric turret)	V4 (4-position electric turret)
Tool shank size	mm	300×300	380×380	380×380	380×380
Tool shank height	mm	40×40	50×50	50×50	50×50
	TAILSTOCK
Diameter of tailstock quill	mm	220	300	300	300
Travel of tailstock quill	mm	300	300	300	300
Taper hole of tailstock quill	-	MT-6	MT-6	MT-6	MT-6
	OTHERS
Standards Implemented	JB/T8324.1-96 - Accuracy of CNC Horizontal Lathes,JB/T8324.2-96 - Technical Specifications for CNC Horizontal Lathes
Machining accuracy	IT6-IT7

 

 

Machine Configuration

 

Category	Details
Standard accessories	1. Electrical and rotating tailstock; 2. Manual four - jaw chuck; 3. Vertical 4 - station electric turret, the turret body size is 3; 4. Automatic lubrication, cooling system.
5. External protection (Optional)	1. Special size chuck; 2. One - piece headstock body; 3. Steel built - in guideway; 4. Follow rest, steady rest, roller support, electrical box air conditioner; 5. Lathe protection