You Ji VTH Series (Hydrostatic Bearing)

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You Ji VTH Series (Hydrostatic Bearing)

You Ji VTH vertical turning centers are engineered for heavy duty turning of large workpieces. The series is comprised of 32 machines with standard cutting diameters ranging from 130″ to 350″ (3300 mm to 8900 mm), and spindle power extending from 100 hp to 133 hp.

The heavy-duty spindle incorporates a high precision hydrostatic bearing designed to withstand high axial and radial loads. In the hydrostatic system, pockets of oil between the base of the machine and the table eliminate contact between mating surfaces and promote friction-free operation. A dual-wound 133 hp Fanuc high-torque spindle motor is coupled with a 2-speed ZF helical planetary gearbox. The combination of the high/low motor and 2 speed gearbox provides the benefits of a 3-speed transmission. Power is transmitted through a Class 1 ring and pinion gear that provides a further gear reduction and torque multiplication. This massive spindle can support a table load of up to 650,000 lbs. With the C-axis option, dual 100hp tandem spindle motors allow 10 arc second positioning and 5 arc seconds repeatability.

The X and Z axes are a box way design that facilitates heavy duty machining and high precision. The Turcite B-coated ways are completely enclosed and feature a forced lubrication system. The rigid twin column design and heavy base are Meehanite castings, heavily ribbed to minimize thermal distortion and dampen vibration.

The Z-axis is a large cast-steel square ram that is extremely rigid even when extended to its full length of 59″ (1500 mm), opt. 78.7″ (2000 mm). A 15.7″ x 15.7″ [400 mm x 400 mm] ram with BT-60 tool interface is optional for extra-heavy-duty cutting. Precision Class 3 ballscrews are driven directly by servo motors, eliminating belts or gears. The cross rail moves on box ways in 200mm increments and automatically latches against fixed stops. It is positioned by dual lead screws on each side of the column and is hydraulically clamped for rigidity.

Specifications
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Item / ModelVTH-3000ATCVTH-3000ATC-IVTH-3000ATC-IIVTH-3000ATC-III
Photos
Table Size (in.)118118118118
Max Swing (in.)134″134″134134
Std. Cutting Dia. (in.)130130130130
Z Travel (in.)59.159.159.159.1
Rail Travel (in.)47.2557995
Ram to Table Max (in.)85101124140
Table Load (lbs.)99,00099,00099,00099,000
ATC System12 / 16 /32 / 6012 / 16 /32 / 6012 / 16 /32 / 6012 / 16 /32 / 60
Spindle HP100 x 2100 x 2100 x 2100 x 2
RPM75757575
C AxisOptionalOptionalOptionalOptional
Twin RamOptionalOptionalOptionalOptional
Weight (lbs.)154,000164,000174,000184,000
Item / ModelVTH-3500ATCVTH-3500ATC-IVTH-3500ATC-IIVTH-3500ATC-III
Photos
Table Size (in.)138138138138
Max Swing (in.)161161161161
Std. Cutting Dia. (in.)150150150150
Z Travel (in.)59.159.159.159.1
Rail Travel (in.)47.2557995
Ram to Table Max (in.)85101124140
Table Load (lbs.)99,00099,00099,00099,000
ATC System12 / 16 /32 / 6012 / 16 /32 / 6012 / 16 /32 / 6012 / 16 /32 / 60
Spindle HP100 x 2100 x 2100 x 2100 x 2
RPM75757575
C AxisOptionalOptionalOptionalOptional
Twin RamOptionalOptionalOptionalOptional
Weight (lbs.)198,000208,000218,000228,000
Item / ModelVTH-4000ATCVTH-4000ATC-IVTH-4000ATC-IIVTH-4000-III
Photos
Table Size (in.)157157157157
Max Swing (in.)181181181181
Std. Cutting Dia. (in.)169169169169
Z Travel (in.)59.159.159.159.1
Rail Travel (in.)47.2557995
Ram to Table Max (in.)8197120136
Table Load (lbs.)132,000132,000132,000132,000
ATC System12 / 16 /32 / 6012 / 16 /32 / 6012 / 16 /32 / 6012 / 16 /32 / 60
Spindle HP100 x 2100 x 2100 x 2100 x 2
RPM60606060
C AxisOptionalOptionalOptionalOptional
Twin RamOptionalOptionalOptionalOptional
Weight (lbs.)220,000230,000240,000250,000
Item / ModelVTH-4500ATCVTH-4500ATC-IVTH-4500ATC-IIVTH-4500ATC-III
Photos
Table Size (in.)177177177177
Max Swing (in.)201201201201
Std. Cutting Dia. (in.)189189189189
Z Travel (in.)59.159.159.159.1
Rail Travel (in.)47.2557995
Ram to Table Max (in.)8197120136
Table Load (lbs.)132,000132,000132,000132,000
ATC System12 / 16 /32 / 6012 / 16 /32 / 6012 / 16 /32 / 6012 / 16 /32 / 60
Spindle HP100 x 2100 x 2100 x 2100 x 2
RPM60606060
C AxisOptionalOptionalOptionalOptional
Twin RamOptionalOptionalOptionalOptional
Weight (lbs.)275,000285,000295,000305,000
Item / ModelVTH-5000ATCVTH-5000ATC-IVTH-5000ATC-IIVTH-5000ATC-III
Photos
Table Size (in.)197197197197
Max Swing (in.)252252252252
Std. Cutting Dia. (in.)232232323232
Z Travel (in.)59.159.17979
Rail Travel (in.)557995110
Ram to Table Max (in.)101124140156
Table Load (lbs.)220,000220,000220,000220,000
ATC System12 / 16 /32 / 6012 / 16 /32 / 6012 / 16 /32 / 6012 / 16 /32 / 60
Spindle HP100 x 2100 x 2100 x 2100 x 2
RPM40404040
C AxisOptionalOptionalOptionalOptional
Twin RamOptionalOptionalOptionalOptional
Weight (lbs.)484,000494,000504,000514,000
Item / ModelVTH-6000ATCVTH-6000ATC-IVTH-6000ATC-IIVTH-6000ATC-III
Photos
Table Size (in.)236236236236
Max Swing (in.)291291291291
Std. Cutting Dia. (in.)271271271271
Z Travel (in.)59.159.17979
Rail Travel (in.)557995110
Ram to Table Max (in.)101124140156
Table Load (lbs.)330,000330,000330,000330,000
ATC System12 / 16 /32 / 6012 / 16 /32 / 6012 / 16 /32 / 6012 / 16 /32 / 60
Spindle HP100 x 2100 x 2100 x 2100 x 2
RPM25252525
C AxisOptionalOptionalOptionalOptional
Twin RamOptionalOptionalOptionalOptional
Weight (lbs.)616,000626,000636,000646,000
Item / ModelVTH-7000ATCVTH-7000ATC-IVTH-7000ATC-IIVTH-7000ATC-III
Photos
Table Size (in.)275275275275
Max Swing (in.)354354354354
Std. Cutting Dia. (in.)335335335335
Z Travel (in.)59.1797998
Rail Travel (in.)6395110157
Ram to Table Max (in.)120152168215
Table Load (lbs.)550,000550,000550,000550,000
ATC System12 / 16 /32 / 6012 / 16 /32 / 6012 / 16 /32 / 6012 / 16 /32 / 60
Spindle HP100 x 2133 x 2133 x 2133 x 2
RPM20202020
C AxisOptionalOptionalOptionalOptional
Twin RamOptionalOptionalOptionalOptional
Weight (lbs.)880,000890,000900,000910,000
Item / ModelVTH-8000ATCVTH-8000ATC-IVTH-8000ATC-IIVTH-8000ATC-III
Photos
Table Size (in.)315315315315
Max Swing (in.)354354354354
Std. Cutting Dia. (in.)350350350350
Z Travel (in.)59.1797998
Rail Travel (in.)6395110157
Ram to Table Max (in.)120152168215
Table Load (lbs.)660,000660,000660,000660,000
ATC System12 / 16 /32 / 6012 / 16 /32 / 6012 / 16 /32 / 6012 / 16 /32 / 60
Spindle HP133 x 2133 x 2133 x 2133 x 2
RPM1010107510
C AxisOptionalOptionalOptionalOptional
Twin RamOptionalOptionalOptionalOptional
Weight (lbs.)924,000934,000944,000954,000
Standard Equipment
  • Chip Conveyor
  • Full Machine Enclosure
  • Face Plate with Boring Mill Jaws
  • Fanuc CNC Control

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