What is 4th Axis Rotary Table?

4th Axis Rotary Table is an advanced CNC machine accessory that introduces rotational movement to machining operations. While traditional CNC machines operate along three linear axes (X, Y, and Z), the 4th axis adds a rotational A-axis, enabling the workpiece to spin around one of the linear axes.

This table is typically mounted on a vertical or horizontal machining center and works in synchronization with the CNC machine, enabling precise, multi-dimensional machining.

Why Do We Need a Rotary Table?

n modern manufacturing, precision and efficiency are critical. A rotary table offers the ability to:

Achieve Complex Machining : Perform intricate cuts, curves, and angles with ease.
Save Time: Eliminate manual repositioning and achieve faster production cycles.
Increase Accuracy: Execute operations like gear cutting, indexing, and engraving with micrometer-level precision.

Whether working in aerospace, automotive, or precision engineering, a rotary table is indispensable for multi-faceted machining.

Features of a 4th Axis Rotary Table

Pneumatic / Hydraulic Clamping: Provides quick, reliable clamping for the workpiece, ensuring stability during high-torque operations.
Pre-Loaded Axial Radial Roller Bearing: Enhances load capacity and minimizes deflection, delivering exceptional rotational accuracy even under heavy loads.
Gear Mechanism – Motor to Worm Shaft: Ensures smooth power transmission from the motor to the worm shaft, facilitating precise rotational movements.
Dual Lead Worm Gear Set: Combines efficiency and durability, enabling high-speed machining with reduced wear and tear.
Higher Clamping Torque: Provides secure workpiece holding, making it suitable for heavy-duty machining and high-precision tasks.
Vertical / Horizontal Mounting: Offers flexibility to mount the table in either orientation, catering to a wide range of machining requirements.

MODEL		KX125	KX155	KX175	KX215	KX265	KX335	KX415	KX515	KX630
Table Diameter(mm)		Ø125	Ø155	Ø175	Ø215	Ø265	Ø335	Ø415	Ø515	Ø630
Centre Bore Diameter(mm)		Ø40	Ø40	Ø40	Ø60	Ø60	Ø100	Ø100	Ø100	Ø100
T-Slot size(mm)		10H7	10H7	10H7	12H7	12H7	14H7	14H7	14H7	14H7
Tenon Slot size (H7)(mm)		14	14	14	14	18	18	18	18	22
Diameter of through hole(mm)		Ø30	Ø30	Ø30	Ø55	Ø50	Ø110	Ø90	N/A	Ø60
Table Centre height(mm)		1:90	105	135	145	165	215	235	315	325
Speed reduction ratio		1:90	1:90	1:90	1:90	1:120	1:144	1:180	1:144	1:144
Speed (Motor 3000 rpm)		33	33	33	33	25	20.83	16.66	13.88	11.1
	Horizontal position	100	100	200	300	350	600	750	900	2200
Load capacity (Kg)	Vertical Position	60	60	100	150	180	250	N/A	N/A	N/A
	Vertical Position with	100	100	200	300	350	600	750	900	2200
Clamping Torque	5 bar (pneumatic)	150	150	150	250	400	N/A
(Nm)	30 bar (Hydraulic)	250	250	250	500	600	1100	2000	2750	3500
Driving Torque (Nm)		150	150	150	250	400	660	800	1000	1800
Indexing accuracy		±20”	±20”	±15”	±15”	±15”	±15”	±15”	±15”	±15”
Indexing repeatability		±4”	±4”	±4”	±4”	±4”	±4”	±4”	±4”	±4”
Concentricity of center hole (mm)		0.02	0.02	0.02	0.02	0.02	0.02	0.02	0.02	0.02
Table run out (mm)		0.02	0.02	0.02	0.02	0.02	0.02	0.02	0.02	0.02
Net weight		39kg	40kg	45kg	65 kg	100 kg	205kg	225kg	475 kg	680 kg