Used NAGASE SGC-104 CNC Ultra Precision Surface Grinder

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Product Highlight

Used NAGASE SGC-104 SL2S is a Japanese ultra-precision CNC surface and form grinder designed for applications where flatness, straightness, repeatability and accurate angular indexing are critical. With FANUC CNC control, hydrostatic grinding technology and precision rotary indexing capability, it is well suited to mold, gauge, tooling, gear-related and high-precision component manufacturing.

Product Description

Used NAGASE SGC-104 SL2S ultra-precision CNC surface and form grinding machine from Japan, equipped with FANUC Series 16-MB control and a precision rotary indexing system. Designed for demanding mold, gauge, gear, tooling and precision component grinding, this machine offers a cost-effective route to Japanese ultra-precision grinding capability without the investment required for a comparable replacement machine.

Technical Specifications

Item	Specification
Brand	NAGASE INTEGREX
Model	SGC-104 SL2S Index Series
Equipment Condition	Used / Pre-owned
Country of Origin	Japan
Machine Type	Ultra-Precision CNC Surface & Form Grinding Machine
CNC Control	FANUC Series 16-MB
Grinding Configuration	Surface grinding, form grinding and precision index grinding
SGC-104 Reference Chuck Size	1000 × 400 mm
SGC-104 Reference Table Working Area	1200 × 440 mm
Table Top to Spindle Center	Approx. 490 mm
Vertical Minimum Setting Unit	0.0001 mm
Cross-Axis Minimum Setting Unit	0.0001 mm
Reference Grinding Wheel Size	Ø200–355 × 25–38 × Ø127 mm
SL2S Spindle Structure	Hydrostatic grinding-wheel spindle
Longitudinal Guide	Hydrostatic guide system
Indexing Resolution	Down to 1/10,000° on high-precision index configuration
Indexing Accuracy Reference	Approx. ±0.5 arcsec class; configuration dependent
Rotary Index Type	Vertical or horizontal index configurations available within the SGC-104 family
Enclosure	Enclosed grinding area with stainless-steel covering
Recorded Rotary-Axis Test Data	U max 0.7 arcsec; P 1.3 arcsec; Pa 0.9 arcsec; U mean 0.3 arcsec
Suitable Materials	Tool steel, hardened steel, carbide and other precision engineering materials, subject to wheel selection

NAGASE’s current SGC specification table gives the 104 size as a 1000 × 400 mm chuck, 1200 × 440 mm working area, 490 mm spindle-center height, 0.0001 mm vertical/cross minimum setting units and Ø200–355 mm wheel range. Exact installed specifications on this used unit should be confirmed against its machine documentation because SGC machines were supplied in multiple configurations.

The manufacturer’s SGC-104 index material describes high-precision vertical and horizontal indexing, while earlier SGC technical literature specifies 1/10,000° index resolution and ±0.5 arcsec-class high-precision indexing performance.

Applications & Suitable Industries

Application	Typical Use
Precision Surface Grinding	Flat and parallel surfaces requiring tight dimensional control
Mold & Die Manufacturing	Precision mold plates, press dies, inserts and tooling components
Index Grinding	Components requiring accurate angular positioning and repeated indexing
Gear & Spline Work	Precision tooth, spline and related indexed grinding applications
Gauge Manufacturing	Master gauges, precision inspection tooling and reference components
Serration Grinding	Serration punches and indexed tooling
Precision Machine Components	High-accuracy mechanical parts requiring flatness and straightness
Form Grinding	Profiles, grooves, shoulders and accurately dressed wheel forms
Carbide Tooling	Precision grinding of wear-resistant tooling when correctly configured
High-Accuracy Production	Aerospace, automotive, optical, mold, tooling and precision engineering workshops

NAGASE specifically describes its indexing systems for applications including serration punches, gauges and master gears, while the broader SGC platform is intended for ultra-flat, parallel, straight and form grinding.

FAQ

Does the NAGASE SGC-104 support precision rotary indexing?

Yes. The SGC-104 index family was developed for high-precision indexed grinding and was offered with vertical and horizontal indexing configurations. The exact installed configuration of this unit should be confirmed from the full model plate and machine documentation.

What CNC controller is installed on this used NAGASE grinder?

The machine is equipped with a FANUC Series 16-MB CNC control, a widely recognized industrial CNC platform commonly associated with precision machine-tool applications.

What type of parts can this NAGASE SGC-104 grind?

Typical applications include precision dies, mold components, gauges, tooling, serration punches, indexed components, gear-related parts and high-accuracy machine components. Actual capability depends on the workholding, dresser, wheel specification and installed index arrangement.