Seiko Instruments Inc.

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Precision Machinery Division

Precision Machinery

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CNC Internal Grinder STG-3N

This is the CNC Internal Grinder STG-3N which meets demands of high-mix low-volume production due to realize downsizing and high cost performance.

stg-3n

Features

  • Space-saving A0 size footprint.
  • SII original spindle assures a highly efficient grinding process.
  • Optimizing for multiporpus use.
  • Easy maintnance and high cost-performance.

 

Chuck Type

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Scroll

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Collet

Grinding Rayout

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Taper Grinding
(Workhead swivel)

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Taper Grinding
(2 Axis Control, Option)

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Face Grinding
(Option)

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Cylindrical Grinding
(Option)

Applications

Material SUJ2 SKD11 Cemented Carbide ZrO2
Grinding Diameter     φ1mm φ5mm φ3.3mm φ10mm
Roundness 0.28µm 0.39µm 0.51µm 0.7µm
Roughness - Ra 0.07µm Ra 0.147µm Ra 0.145µm
Cycle Time 71 sec. 27 sec. 28 sec. 108 sec.
Work stg-work1

 

 stg-work2

 

 stg-work3

 

 stg-work4

 

Grinding Specifications

Outer diameter to φ95mm
Inner diameter from φ0.3mm
Grindable Length to 40mm

Please ask us for details of grindable diameter/length.

Specifications

Workhead Sync R.P.M 0 to 2,000min-1
Workhead swivel angle -5° to 50°
Chuck type
(selectable)
 3 inch scroll (φ2 to φ70mm)
4 inch scroll (φ3 to φ95mm)
Collet ( to φ14mm)
Auto collet ( to φ14mm) *
Wheelhead spindle
(selectable)
 M8H-T(45,000 to 80,000min-1)
M11H-T (60,000 to 110,000min-1)
M15H-UP (80,000 to 150,000min-1)
M18H (100,000 to 180,000min-1) *
Dresser Single point dresser
Standard accessories Coolant liquid tank + magnetic separator
Spindle cooling unit
Option unit Mist collector *
Automatic fire extinguisher + Damper *
Dimensions 1,150mm(W)×830mm(D)×1,250mm(H)
Weight 1,300kg

* mark is option units. Please ask us for details of specifications.

Inside of Machine

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Inside of STG-3N
(Scroll chuck type)

Machine Dimensions

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SII Green Products

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[STG-3N is authorized as a SII Green Products.]

In December 2001, SII introduced the SII Green Product Label System, which is equivalent to the ISO 14021 Type II environmental label. This aims to raise public awareness of our eco-friendly products.

View the detail of SII Green Products.

 

Grinder Product Lineup