Mazak SYNCREX 20/7
Key Specifications
Tool Capacity
max bar capacity
main spindle speed
main spindle power
sub spindle speed
sub spindle power
Overview
The Mazak SYNCREX 20/7 is the entry-level configuration in the 20 mm bar capacity SYNCREX range, delivering 7 axes of CNC control for efficient Swiss-type turning of small precision components. With 20 mm (0.787 in) maximum bar capacity, this machine fills the gap between the smallest 12 mm SYNCREX and the mid-range 25 mm models, targeting shops producing dental components, electronic connectors, miniature hydraulic fittings, and precision automotive parts that exceed 12 mm but do not require 25 mm capacity.
The main spindle delivers 5.5 kW (7.5 hp) at 8,000 RPM through a collet system accepting bar stock up to 20 mm diameter. The sub-spindle provides 3.7 kW (5 hp) at 8,000 RPM for back-working operations including cutoff pickup, back-facing, and secondary drilling. The guide bushing supports the bar at the cutting zone for Swiss-type rigidity, and is removable for non-guide-bushing mode on shorter parts where material savings matter.
The 7-axis configuration provides the essential Swiss-type motions: main spindle turning (X1, Z1), cross-working (Y1), and sub-spindle operations (X2, Z2) with two additional axes for tool positioning. This streamlined axis count reduces complexity compared to 8 and 9-axis models while still enabling simultaneous main and sub-spindle operations. Typical configurations include 16-20 tool positions with fixed turning tools and live rotary tools.
The MAZATROL SmoothG CNC control provides Mazak's signature conversational programming, significantly reducing setup time compared to traditional Swiss machines that require specialized G-code. The machine weighs approximately 2,800 kg (6,173 lb) with a footprint of roughly 2.6 x 1.3 meters. Competitors include the Citizen A20-VII, Star SR-20J, and Tsugami B0205. New machines price between $180,000 and $290,000.
Full Specifications
| Parameter | Value |
|---|---|
| Max Bar Capacity | 20 mm (0.787 in) |
| Main Spindle Speed | 8,000 RPM |
| Main Spindle Power | 5.5 kW (7.5 hp) |
| Sub Spindle Speed | 8,000 RPM |
| Sub Spindle Power | 3.7 kW (5 hp) |
| Number Of Axes | 7 axes |
| Guide Bushing | Yes (removable) |
| Tool Stations | 16-20 positions (fixed and rotary) |
| Live Tooling | Yes |
| Max Machining Length | 230 mm (9.06 in) |
| Machine Weight | 2,800 kg (6,173 lb) |
| CNC Control | MAZATROL SmoothG CNC |
| Max Machining Diameter | Φ1.5" |
| Max Spindle Speed | 8000 min-1(rpm) |
| Tool Capacity | 39 |
Specifications sourced from mazak.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 20 mm bar capacity covers a wide range of precision turned parts including dental abutments, hydraulic fittings, and electronic housings that exceed the 12 mm SYNCREX limit
- 7-axis configuration simplifies programming and setup compared to 8 and 9-axis models while still enabling simultaneous main and sub-spindle operations
- MAZATROL SmoothG conversational programming reduces setup time by 30-50% compared to traditional Swiss G-code programming on Citizen and Star platforms
- Removable guide bushing provides flexibility to run Swiss mode for long slender parts or chucker mode for shorter parts with better material utilization
- Lower entry price than the 8 and 9-axis 20 mm models makes this the most accessible SYNCREX for shops entering the Swiss-type market
- Mazak's global service network provides faster support response than many traditional Swiss machine importers based primarily in Europe or Japan
Limitations
- 7-axis configuration lacks the additional cross-working axes found on the 20/8 and 20/9, limiting the complexity of simultaneous operations and off-center features
- 8,000 RPM main spindle speed is lower than some competitors offering 10,000-12,000 RPM in this bar range, reducing surface speed on small-diameter aluminum and brass
- Fewer tool positions (16-20) than high-end Swiss machines from Citizen and Star that offer 25-30+ positions in the 20 mm class
- Newer entrant to Swiss-type market means limited SYNCREX-specific track record compared to Citizen and Star machines with decades of proven production history
Best For
Frequently Asked Questions
01
Base SYNCREX 20/7 configurations start around $180,000. Production-ready setups with bar feeder, parts catcher, high-pressure coolant, and live tooling complement run $240,000-$290,000. The 7-axis model is the most affordable entry point in the 20 mm SYNCREX range.
02
The 20/8 adds an eighth axis of control, typically providing additional cross-working capability for more complex simultaneous operations. The 20/8 can accommodate more tool positions and enables features like off-center milling and hexagonal machining that the 7-axis model cannot efficiently produce. For standard Swiss turning with back-working, the 20/7 is sufficient; for complex multi-feature parts, step up to the 20/8.
03
Yes. The guide bushing is removable, allowing the machine to operate in non-guide-bushing (chucker) mode for shorter parts where the length-to-diameter ratio does not require guide bushing support. This reduces bar remnant waste and improves material utilization on parts with L/D ratios under 3:1.
04
The Citizen A20 series is the established leader in the 20 mm Swiss class with decades of production history. It offers higher spindle speeds, more tool positions, and Citizen's proven Cincom programming system. The SYNCREX 20/7 counters with MAZATROL conversational programming and a lower entry price. For high-volume dedicated Swiss production, Citizen has the track record; for shops wanting Swiss capability with easier programming, the SYNCREX is compelling.
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