INDEX G220 Plus

$380,000 - $480,000 Updated 2026-03-17

Key Specifications

Chuck Diameter

220 mm

Swing Over Bed

500 mm

Max Turning Diameter

340 mm

Max Turning Length

650 mm

Main Spindle Speed

5,000 RPM

Main Spindle Power

22 kW

Overview

The INDEX G220 Plus is an enhanced variant of the G220 CNC lathe platform, incorporating an extended Y-axis travel and a more comprehensive live tooling configuration than the standard G220. This makes the G220 Plus a genuine turn-mill center capable of handling parts that require significant off-center milling, angular drilling, and contour milling — operations that push a conventional gang-tool CNC lathe beyond its practical limits but do not yet justify the investment in a full multi-axis machining center.

The G220 Plus retains the base G220's key structural features: a 65-degree slant bed cast iron base for excellent chip clearance, a high-precision main spindle with hydraulic chuck, and a servo-driven sub-spindle for complete back-work. The Plus variant adds extended Y-axis travel on the main turret — typically ±60mm or greater — and increases the driven tool count and power to enable full-width face milling and angular cross-features on shaft-type components in the 220mm chuck diameter class.

INDEX equips the G220 Plus with the company's iXpanel control interface on the Siemens SINUMERIK 840D sl platform, which provides an intuitive graphical programming environment specifically optimized for turn-mill operations. The control supports simultaneous 4-axis turning, Y-axis milling, and complete C-axis contouring through a unified programming environment without the complexity overhead typical of multi-axis machine tools from other builders.

For manufacturers producing shaft components, flanges, and complex rotational workpieces in the 100–220mm diameter range, the G220 Plus delivers machining center functionality within a lathe envelope. This makes it particularly effective for job shops and contract manufacturers who need maximum flexibility across a variety of part families without committing to dedicated machining cells for each part type.

Full Specifications

Parameter	Value
Chuck Diameter	220 mm
Swing Over Bed	500 mm
Max Turning Diameter	340 mm
Max Turning Length	650 mm
Main Spindle Speed	5,000 RPM
Main Spindle Power	22 kW
Sub-Spindle Speed	5,000 RPM
Y-Axis Travel (Plus)	±60 mm
Driven Tool Speed	6,000 RPM
Driven Tool Power	7.5 kW
Turret Positions	12
Control	INDEX iXpanel / Siemens SINUMERIK 840D sl
Machine Weight	Approx. 8,500 kg
Guest Name	Dietary Restriction
David	None
Bob	None
Nancy	None
Mary	Vegetarian
Formula	Formula Output
Index	3
Goal	Formula
Find Marys Dietary Restriction	=INDEX(A1:D6, MATCH("Mary", A1:A6, 0), MATCH("Dietary Restriction", A1:D1, 0))
Find Who Is At Table Number 2	=INDEX(A1:D6, MATCH(2, D1:D6, 0), MATCH("Guest Name", A1:D1, 0))
Chuck Size	230 mm
Spindle Torque Max	207 Nm
Max Turning Length	900 mm / 1.200 mm

Specifications sourced from index-group.com — verified 2026-03-28

Strengths & Limitations

Strengths

Extended ±60mm Y-axis enables full off-center milling and angular drilling for complete turn-mill operations
Siemens SINUMERIK 840D sl control provides industry-standard programming environment with INDEX iXpanel graphical interface
22 kW main spindle handles heavy turning passes in alloy steel and cast iron
Servo sub-spindle with driven tools enables complete back-work without secondary setup
12-station turret with 7.5 kW driven tools supports face milling and contour operations at the same power level as a vertical machining center

Limitations

Premium price premium over the standard G220 may not be justified for parts that do not fully utilize the extended Y-axis
Larger footprint than a standard gang-tool lathe requires advance floor planning
SINUMERIK 840D sl programming has a steeper learning curve than simpler lathe controls for shops new to Siemens

Best For

Complex shaft components requiring off-center milling, key slots, and radial features in a single setup Flanges and disc parts with face milling, angular drilling patterns, and threaded features Contract shops producing high-mix, medium-volume turned parts needing turn-mill flexibility without a dedicated machining center Aerospace and energy sector components in alloy steel requiring tight tolerances on both turned and milled features

Frequently Asked Questions

01 What distinguishes the G220 Plus from the standard INDEX G220?

The G220 Plus adds extended Y-axis travel (±60mm versus the standard G220's limited or optional Y-axis) and increased driven tool power. This makes the Plus variant a true turn-mill center capable of full-width face milling and angular cross-features, whereas the standard G220 is primarily configured for turning with basic driven tool capability.

02 Can the G220 Plus replace a horizontal machining center for some part families?

For shaft-type and rotational components requiring both turning and milling operations, the G220 Plus can effectively consolidate two operations — turning and machining center — into a single setup. This is not applicable to prismatic parts or parts requiring multiple face machining operations, where a dedicated horizontal or vertical machining center remains necessary.

03 What is the maximum Y-axis travel on the G220 Plus?

The G220 Plus provides ±60mm of Y-axis travel on the main turret, enabling off-center feature machining up to 60mm from the spindle centerline. This is sufficient for the majority of shaft and flange components in the 220mm class requiring off-center drilling and milling operations.

04 Is the INDEX G220 Plus available with a steady rest for long shaft work?

Yes. INDEX offers a programmable steady rest option for the G220 Plus to support long, slender shafts during turning and milling operations. This is important for shaft applications where length-to-diameter ratios exceed approximately 5:1 and workpiece deflection would otherwise affect accuracy.

05 What CAM software is recommended for the G220 Plus?

The G220 Plus with Siemens SINUMERIK 840D sl is supported by major CAM platforms including Mastercam Turn-Mill, ESPRIT, SolidCAM, and Siemens NX for turn-mill operations. INDEX also provides its own programming support through the iXpanel interface, which covers a significant proportion of part geometries without a separate CAM system.