INDEX MS20-6
Key Specifications
Rapid Traverse
number of spindles
max bar capacity
max turning diameter
max machining length
spindle speed
Overview
The INDEX MS20-6 is a 6-spindle CNC multi-spindle automatic lathe optimized for high-speed production of small-diameter precision parts up to 20 mm bar stock. Purpose-built for the connector, electronic hardware, and miniature hydraulic component segments, the MS20-6 achieves parts-per-hour rates that no single-spindle Swiss-type or turning center can approach for parts in this size class. With six spindle positions simultaneously machining six parts at different operation stages, the MS20-6 delivers one completed part per cycle time of the longest single-position operation—often under 10 seconds for simple parts.
The MS20-6 employs Siemens 840D sl CNC control with full servo drives on all axes, enabling changeover in a matter of hours compared to the days required for cam-type multi-spindle automatics. All six spindles are servo-driven with independent speed control, enabling optimum cutting conditions at every spindle position rather than running all positions at a compromise speed. The machine supports live tooling at selected positions for cross-drilling and milling operations that extend the machine's capability beyond simple turned profiles.
INDEX's MS20-6 is designed specifically for the sub-20 mm production segment where Swiss-type lathes handle individual parts with flexibility but cannot match the pure throughput of a multi-spindle automatic. For applications requiring millions of small precision parts annually—connector pins, electronic terminals, miniature fittings, medical needles, and small fasteners—the MS20-6 represents the most cost-effective production solution available.
The machine's compact footprint relative to its output rate, combined with integrated chip management and coolant systems, enables efficient installation in precision parts manufacturing facilities. INDEX's long service network in North America and Europe supports the machine through its working life in demanding production environments.
Full Specifications
| Parameter | Value |
|---|---|
| Number Of Spindles | 6 |
| Max Bar Capacity | 20 mm (0.787 in) |
| Max Turning Diameter | 28 mm (1.10 in) |
| Max Machining Length | 80 mm (3.15 in) per spindle position |
| Spindle Speed | Up to 10,000 RPM per spindle |
| Live Tool Speed | 8,000 RPM |
| Number Of Axes | Up to 2 NC axes per spindle position + live tool axes |
| Tool Positions | Up to 4 tools per spindle position (24 total) |
| CNC Control | Siemens 840D sl |
| Rapid Traverse Rate | 30 m/min |
| Machine Weight | Approx. 12,000 kg (26,455 lb) |
| Power Consumption | 55 kVA |
| 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)) |
Specifications sourced from index-group.com — verified 2026-03-28
Strengths & Limitations
Strengths
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Limitations
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Best For
Frequently Asked Questions
01
New INDEX MS20-6 multi-spindle automatic lathes typically range from $400,000 to $700,000 depending on live tooling configuration and options. The wide range reflects significant variation in tooling setup complexity across different applications.
02
For parts below 20mm diameter, the MS20-6 delivers 4–6x the throughput of a single Swiss-type lathe at comparable quality. The tradeoff is significantly higher investment cost and setup complexity. For annual volumes above 500,000 parts, the MS20-6 economics typically win convincingly. For lower volumes or highly variable programs, Swiss-type lathes with automation are more flexible.
03
Effective cycle time equals the time of the longest single-position operation. For many simple connector-type parts this is under 8–12 seconds, yielding 300–450 finished parts per hour from a single machine—a rate that would require 6 high-speed Swiss-type lathes to match.
04
The MS20-6 handles free-machining steel, stainless steel grades, brass and copper alloys, aluminum, and titanium. The high spindle speeds (up to 10,000 RPM) are particularly well-suited for small-diameter aluminum and brass work where surface speed requirements demand high RPM.
05
CNC changeover on the MS20-6 typically requires 4–12 hours depending on part complexity and tooling difference from the previous job. This is the key advantage over cam-type multi-spindle automatics where cam changes require 2–4 days. INDEX's standardized tooling system and changeover procedures help minimize changeover time.
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