■ Machining of motor core dies, precision press dies and other die plates (S4/SLS2).
Outstanding straightness with both the longitudinal axis and cross axis.
Outstanding flatness, parallelism and squareness even with large workpieces.
Flatness below 2μm/3000 x 1000mm in the past machining record.
■ Machining of super-precision parts including gauges and T dies (extrusion molding dies) (S4/SLS2).
Submicron machining accuracy even for meter-size workpieces.
Mirror surface finish in search of nano-order quality for lapping-free machining.
Straightness of 0.35μm/1400mm in the past machining record (S4/SLS2).
■ Enhanced service life of press dies and yield of resin dies (for all types).
Showing power in machining of workpieces of 400mm or 600mm in width.
Not only surface machining but also grooving and forming are possible by utilizing high machine motion characteristics and repeatability.
■ Accurate machining of a variety of die parts, jigs and machine parts (for all types).
Accurate and efficient machining of various jigs and machine parts.
From the standard model to the flagship model, this series shows its power in machining long workpieces.
Nagase column-type super-precision forming surface grinder achieves the optimum squareness of each axis with no overhang.
Because of the T-type integrated bed structure, the industry standard today, and other concepts untrammeled by conventional wisdom, the column-type grinder is now widely recognized as a product of Nagase.
Let us introduce four types of machine features roughly classified from the standpoint of the grinding wheel bearing and axis guide.
The SGC series is characterized by an optimized machine configuration to comply with customer requests. For details of specification selection, refer to each article below:
The machine for ultra-flat and ultra-parallel machining as well as mirror-finish grinding of medium through large workpieces.
Each axis is equipped with a unique non-contact and polyhedral constraint static guideway to achieve ultra-mirror finish, ultra-flat and parallel machining accuracy. Straightness in both the longitudinal and cross directions is enhanced to enable ultra-flat machining of deep and large workpieces. (Submicron machine motion characteristics can be achieved over the entire machining area of 3,000mm x 1,000mm.)
Standard machine for manufacturing ultra-long T dies and straightness gauges.
“Nagase machines are irreplaceable” is what users say for machining of super-precision parts including ultra-long T dies and straightness gauges. The S4 which investigated thoroughly mechanical motion characteristic of submicron is a machine to contribute in the creation of the world reference accuracy.
By taking advantage of submicron machine characteristics, highly accurate on-the-machine measurement and shape fabrication are possible.
The combination of the high-speed NC and ultra-precision linear motor drive enables the crowning shape, other ultra-shape fabrication and accurate on-the-machine measurement. Measurement for machining large workpieces, in particular, has been a problem, but the ability for accurate on-the-machine measurement incredibly eases both measurement and corrective machining
Consistent accuracy and value after a decade of use.
This super-precision grinder is durable and tough, so even with long-term use there is minimal deterioration in accuracy. The covering, mostly made of SUS, retains its integrity over time.
■ SGC-3010S4-PCnc (OP): Machining area 3,000mm × 1,000mm
■ SGC-428S4-N3 (OP): Machining area 4,200mm × 800mm
This machine allows super-accurate ultra-surface machining, ultra-parallel machining and mirror surface grinding of a maximum width of 800mm.
The grinding wheel spindle and cross/longitudinal axis guide employ a unique non-contact and polyhedral constraint static guide each. Superior straightness is achieved in both the longitudinal and cross directions, and ultra-flat machining and ultra-mirror surface machining of middle-size through large-size workpieces are possible within a range of 800mm in width.
Fabrication of sharp and flat surface to achieve enhanced service life of dies.
Sharp surface grinding and lapping-free mirror surface grinding of large workpieces are possible. This machine is especially powerful in enhancing the service life of precision motor core dies and precision progressive press dies.
Lapping-free mirror surface grinding of T-dies exceeding 1,000mm in size.
A good track record in straight machining of precision machine parts.
Submicron motion characteristics and NC command value follow-up performance.
Because of outstanding straightness, Nagase has a good record of manufacturing long die parts such as T-dies and precision machine parts for machine tools, etc. Nagase also uses this model in its factory.
Unchanged accuracy and value after a decade of use.
This super-precision grinder is durable and tough enough for a long-term use with minimal deterioration in accuracy. The covering, mostly made of SUS, retains its integrity over time.
■ SGC-254SLS2-PCnc (OP): Machining area 2,500mm × 400mm
■ SGC-154SLS2-PCnc (OP): Machining area 1,500mm × 400mm
Easy mirror surface grinding.
The grinding wheel spindle and longitudinal axis guide employs a unique non-contact and polyhedral constraint static guideway. The longitudinal table guide structure is friction-free and excellent in vibration damping, and the hydrostatic spindle allows for accuracy and rigidity eases mirror surface grinding.
Sharp flat surface fabrication and straight machining
Nagase’s unique T-shaped monoblock bed structure demonstrates high straightness performance not only in the longitudinal direction but also in the cross direction. Ultra-flat and ultra-parallel straight machining of middle to large-sized (300 – 600mm) workpieces is possible by utilizing high motion characteristics.
Most powerful in enhanced yield of resin dies
Because of high repeatability, ultra-flat and parallel fabrication and grooving as well as nano-order quality, the machine demonstrates its power in its high yield of lenses and other precision resin products. It is highly rated as a machine over competitors.
Long-term accuracy and beautiful appearance
The hydrostatic guide, employed in the grinding wheel spindle and longitudinal axis, hardly wear or consume so that the accuracy deterioration over time is minimized. The covering, mostly made of SUS, retains its integrity appearance even after the elapse of a certain period of time.
■ SGC-94SL2S (OP): Machining area 900mm × 400mm
■ SGC-156SLS2-Zero3 (OP): Machining area 1,500mm × 600mm
* The SL2S type is included
Machining accuracy achieved only by Nagase.
Nagase adopts an accurate rolling bearing for the grinding wheel spindle, a high-linear drive system for the vertical and cross axes and a dynamic slide bearing for the horizontal axis.
In addition, Nagase’s unique and rigid T-shaped bed structure, table structure with no hangover and most carefully scraped slideway are all combined to achieve unconventionally high flatness and parallelism.
Not only surface machining but also forming and grooving are Nagase’s specialty.
The abilities for ultra-flat and parallel fabrication and grooving with high repeatability, as well as achieving nano-order quality is demonstrated in high-yield production of lenses and other precision resin products. Thus, this model has been highly valued and differentiated from those of competitors.
High-accuracy longitudinal feed up to 4,000mm.
The accurate longitudinal feed is a major feature. A maximum of 4,000mm is available.
This machine is usable to manufacture precision machine parts for industrial machinery and machine tools as well as jigs and dies.
Covering design on the assumption of a long-term operation
The table, which could be easily corroded due to ultra-hard materials and water-soluble grinding fluid, is protected by a covering made mostly of stainless steel. This design maintains accuracy for a long period of time, which is illustrative of Nagase’s philosophy.
■ SGC-203BL2D-E2 (OP): Machining area 2,000mm×300mm
■ SGC-124BL2D-E2 (OP): Machining area 1,200mm×400mm
The machining size suited to target machining under consideration can be set. Nagase has a track record of machining workpieces with the size of “540 x 250mm (min)” through “4,200 x 1,000mm (max.)”.
The guide of each axis can be selected from a variety of types such as “hydrostatic guide”, “direct acting rolling guide”, “dynamic slideway” and “ball screw + servo motor” according to the required machining accuracy and function.
The drive actuator of each axis can be selected from “ultra-precision linear motor”, “hydraulic servo cylinder” and “hydraulic cylinder” according to the machining under consideration.
The spindle can be selected from “hydrostatic spindle”, “rolling spindle” and “dynamic pressure metal spindle” according to machining contents. An ultra-low vibration motor, dynamic balance measurement unit and dynamic balance automatic correction unit can also be attached as optional units.
There are 4 types of control functions such as “Zero control (interactive control)”, “PCnc control (PC-integrated type)”, “E2 control (simple NC corresponding to auto machining and dressing)” and “N control (also useable for 5-axis/6-axis type)” available to meet user requirements.
A swing-type dresser, horizontal axis rotary dresser, orthogonal rotary dresser, double cup truer and other types can be installed. Different dressers can be installed on the same table as well (patented).
* In addition, rotary balance, oil temperature and grinding fluid temperature control, attachments can be set. For details, contact one of Nagase sales offices.
■ On-the-machine measurement unit
This unit is for measurement of various shapes and pitches of each axis as well as hole diameters. On-the-machine measurement with accuracy of ±1μm is possible when each axis is driven by hydrostatic pressure and a linear motor.
■ Vertical head unit
The vertical head unit, when mounted on the grinding wheel head side plane, enables grinding of the work end plane and eases square machining. The vertical height is adjustable by motor drive.
■ Vertical rotary indexing unit
Vertical rotary indexing unit allowing accurate indexing with minimum resolution of 1/10,000 – 100,000degrees. This unit is suited for machining which requires accurate indexing and rotation.
■ Horizontal indexing unit
Horizontal indexing unit allowing accurate indexing with minimum resolution of 1/10,000 – 100,000 degrees. This unit is usable for grinding of serration punches, gauges and master gears.
■ Dresser & truer
A various types of dressers, including swing-type dresser, horizontal rotary dresser, orthogonal rotary dresser, double cup truer, etc. can be installed.
|Model/item||Size||Chucking size||Movement amount
(in cross & longitudinal directions)
|Table top surface
|Min. unit in vertical direction||Min. unit in cross direction||Grinding wheel size
(OD x W x ID)
|Grinding wheel spindle|
|SGC||525||500 × 250||700 × 270||460||0.0001||0.0001||φ205×19×φ50.8||2P|
|63||600 × 300||750 × 340||490||0.0001||0.0001||φ200〜355×25〜38×φ127||4P|
|64||600 × 400||750 × 440||490||0.0001||0.0001||φ200〜355×25〜38×φ127||4P|
|93||900 × 300||1095 × 340||490||0.0001||0.0001||φ200〜355×25〜38×φ127||4P|
|94||900 × 400||1095 × 440||490||0.0001||0.0001||φ200〜305×25〜38×φ127||4P|
|95||900 × 500||1200 × 560||855||0.0001||0.0001||φ250〜510×38〜50×φ127||6P|
|96||900 × 600||1200 × 660||855||0.0001||0.0001||φ250〜510×38〜50×φ127||6P|
|103||1000 × 300||1000 × 300||490||0.0001||0.0001||φ200〜355×25〜38×φ127||4P|
|104||1000 × 400||1200 × 440||490||0.0001||0.0001||φ200〜355×25〜38×φ127||5.5|
|123||1200 × 300||1400 × 340||490||0.0001||0.0001||φ200〜355×25〜38×φ127||5.5|
|125||1200 × 500||1500 × 560||855||0.0001||0.0001||φ250〜510×38〜50×φ127||6P|
|126||1200 × 600||1500 × 660||855||0.0001||0.0001||φ250〜510×38〜50×φ127||6P|
|127||1200 × 700||1500 × 760||855||0.0001||0.0001||φ250〜510×38〜50×φ127||6P|
|135||1300 × 500||1600 × 560||855||0.0001||0.0001||φ250〜510×38〜50×φ127||6P|
|154||1500 × 400||1700 × 440||490||0.0001||0.0001||φ200〜355×25〜38×φ127||5.5|
|155||1500 × 500||1800 × 560||855||0.0001||0.0001||φ250〜510×38〜50×φ127||6P|
|156||1500 × 600||1800 × 660||855||0.0001||0.0001||φ250〜510×38〜50×φ127||6P|
|158||1500 × 800||1800 × 860||855||0.0001||0.0001||φ250〜510×38〜50×φ127||6P|
|1510||1500 × 1000||1950 × 1060||1375||0.0001||0.0001||φ330〜510×38〜50×φ127||6P|
|203||2000 × 300||2200 × 340||490||0.0001||0.0001||φ200〜355×25〜38×φ127||5.5|
|205||2000 × 500||2300 × 560||855||0.0001||0.0001||φ250〜510×38〜50×φ127||6P|
|206||2000 × 600||2300 × 660||855||0.0001||0.0001||φ250〜510×38〜50×φ127||6P|
|208||2000 × 800||2300 × 860||855||0.0001||0.0001||φ250〜510×38〜50×φ127||6P|
|256||2500 × 600||2800 × 660||855||0.0001||0.0001||φ250〜510×38〜50×φ127||6P|
|304||3000 × 400||3200 × 440||490||0.0001||0.0001||φ200〜355×25〜38×φ127||5.5|
|308||3000 × 800||4250 × 860||1220||0.0001||0.0001||φ250〜510×38〜50×φ127||6P|
|3010||3000 × 1000||3300 × 1060||1035||0.0001||0.0001||φ330〜510×38〜50×φ127||15|
|338||3300 × 800||3650 × 860||1220||0.0001||0.0001||φ250〜510×38〜50×φ127||15|
|358||3500 × 800||4000 × 760||1220||0.0001||0.0001||φ250〜510×38〜50×φ127||15|
|408||4000 × 800||4000 × 860||1220||0.0001||0.0001||φ250〜510×38〜50×φ127||15|
■ Contents and specifications are subject to change without prior notice. The contents of description and pictures may contain optional specifications. To place an order, please check the manufacture specifications for details.
■ Machine accuracy and machining accuracy described on this site may differ depending on the measurement and machining conditions.
■ For further details, you may request specifications, technical information, etc.
■ For resale or export of the product, contact us in advance. Exporting products require designated procedures as determined by the Foreign Exchange and Foreign Trade Control Law.
■ This product must not be transferred for any purposes of use that prevents international peace and security or used for one’s own purpose or used by a third party.
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Customers who are thinking of introducing new facilities are welcome to ask us for test machining or visit our factory. Please feel free to consult us. Please inform us of facility conditions, size and material of machining workpieces, machining time, etc. in detail.
Depending on the contents of your request, sales personnel in your district will make a proposal to meet your requirements.