Automatic or Semi-Automatic high precision (0.3-0.4 μm) internal grinding machines with options & wheel head

Over the past 70 years, we have developed, designed and produced automatic and semi-automatic general purpose internal grinding machines, such as YIG-20, YIG-15, YIG-40 and other series of products, accumulating more than 3000 units of internal grinding machines.

FIVE reasons for you to choose YAMADA Internal Grinding Machines:
* Ultra High Precision, circularity within 0.3-0.4 μm
* High Precision and high durability of work head and wheel head
* General purpose machine type have semi automatic or automatic control system
* Optional items for increasing productivity
* Flexible turning table: Max 50 degree

ModelTypeDescription
YIG-20-MSemi-automatic sizingModel with an emphasis on flexibility and is suitable for processing a wide variety of small quantities such as gauges and jigs. (Grinding range 8φ ~ 200φ)
YIG-20-MSAAutomatic sizingEquipped with automatic sizing of the above type, and is a model that can be used for mass-production
YIG-40Semi-automatic sizingIt can handle large and heavy work-pieces with a diameter of 30φ to 400φ that can be grounded.
YIG-15-SA (Not for sale)Automatic sizingPrevious model of YIG-20MSA (grinding range 8φ~150φ).
Only support full-scale repair

YIG-20-MSA Automatic Sizing Unit Model

Special Option for YIG-20-MSA:
Digital direct reading system for work head turning degree is installed.

Specifications
* YIG-20-M is semi automatic sizing type. YIG-20-MSA has semi automatic sizing and automatic sizing system.
* Work head moves vertical & horizontal direction for easy adjustment of work position and space value.
* General purpose grinding machine for large number of change-over process product, internal of material has number of steps, material has large angle taper. And more, possible to grinding external surface and edge surface with same chucking process.
* Range of diameter for machining is 8mm to 20mm.

Example of machining accuracy measurement

Result of circularity test with test material.

Grinding Process

Specifications

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Diameter of capable grinding8φ~200φ
Maximum grinding lengthφ200mm
Swing over range on carriageφ540mm
Swing over range within water-proof coverφ370mm
*φ200mm-400mm as option
Maximum carriage stroke520mm
Carriage moving speedHydro-Static Transmission 0-9m/min
Work head stroke numberStep-less Inverter 30-~800minˉ¹
Work head swiveling angle+15°
*30° for Water proof cover diameter 200mm
Wheel feeding1 scale φ0.005mm
*Maximum automatic feeding φ0.9mm
Wheel head moving distanceMaximum: 100mm
Work Head table moving distanceVertical Maximum: 200mm
Horizontal Maximum: 240mm
MotorWork head: 1.5kw 4P
Wheel head: 2.2kw 2P
Hydraulic system: 1.5kw 4P
Coolant system: 100W 2P
Magnetic Coolant Separator: 25W 4P
Oil tank capacity90ℓ
Coolant tank capacity120ℓ
Floor space2,900×1,350mm
Gross weight2,200kg

YIG-40 Large Internal Grinding Machine

Specifications

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Diameter of capable grinding30φ~400φ
Maximum grinding lengthφ400㎜
Swing over range on carriageφ650㎜
Swing over range within water-proof coverφ600㎜
Maximum carriage stroke1100㎜
Carriage moving speedHydro-Static 0~6m/min
Work head stroke numberStep-less Inverter 20~400minˉ¹
Work head swiveling angle+30°
Wheel feeding1 scale φ0.005 mm (subdivision possible)
* Grinding hydraulic automatic notch 1 mm / diameter
* Handle 1 rotation 4 mm / diameter
Wheel head moving distanceMaximum: 150mm
Work head table moving distanceVertical Maximum: 200mm
Horizontal Maximum: 350mm
MotorWork head: 5.5kw 4P
Wheel head: 5.5kw 2P
Hydraulic system: 2.5kw 4P
Coolant system: 180W 2P
Magnetic Coolant Separator: 25W 4P
Oil-cooled fans: 25w 4P
Oil tank capacity150ℓ
Coolant tank capacity200ℓ
Floor space4,800×2,700㎜×2,200㎜
Gross weight5,000kg

YIG-15 Semi-Automatic Machine

Specifications
Diameter of capable grinding8φ~150φ
Maximum grinding lengthφ150mm
Swing over range on carriageφ400mm
Swing over range within water-proof coverφ310mm
Maximum carriage stroke520mm
Carriage moving speedHydro-Static Transmission 0-9m/min
Work head stroke numberStep-less Inverter 30-~800minˉ¹
Work head swiveling angle+5°
Wheel head feeding1 scale φ0.005mm
*Maximum automatic feeding φ0.9mm
Wheel Head moving DistanceMaximum: 100mm
FeedingHydro-Static Transmission, Automatic feeding
MotorWork head: 1.5kw 4P
Wheel head: 2.2kw 2P
Hydraulic system: 1.5kw 4P
Coolant system: 100W 2P
Magnetic Coolant Separator: 25W 4P
Oil tank capacity90ℓ
Coolant tank capacity120ℓ
Floor space2,700×1,700mm
Gross weight2,000kg