You Ji VTH Series (Vertical Turning Lathes with Hydrostatic Bearing) up to 8 Meters

The You Ji VTH Series vertical turning lathes are engineered for heavy-duty, high-precision turning of large, heavy, and difficult-to-machine workpieces, commonly found in the aerospace, energy, transportation, and heavy equipment industries. A standout feature of this series is its hydrostatic table bearings, which offer exceptional advantages in precision, load capacity, and machine longevity. Models in bothsingle ram and twin ram configurations are available. Customized sizes and configurations are available upon request.

Like all large-format You Ji CNC machines, the VTH series is constructed with box way guideways for superior rigidity and stability, a Meehanite cast iron base for optimal vibration dampening during cutting, and a ram-type spindle head for enhanced support and stability when handling large tooling. The high-torque spindle drive delivers powerful performance at low RPMs, ideal for demanding cutting operations. For increased flexibility, the machines are available with optional C-axis and live tooling, enabling milling, drilling, and tapping in a single setup. Automatic tool changers, in turret or magazine configurations, further enhance productivity and automation potential.

The hydrostatic table bearings allow the worktable to float on a thin film of oil, eliminating metal-to-metal contact. This design ensures ultra-smooth, vibration-free rotationโ€”critical for precision machining of heavy partsโ€”while significantly reducing wear, maintenance requirements, and downtime related costs.

You Jiโ€™s VTH Series is the ideal solution for extra-large components such as jet engine casings, landing gear parts, wind turbine hubs, valve bodies, large gearboxes, brake discs, bearings, housings, and flange โ€” delivering consistent performance in even the most demanding industrial environments.

Specifications

Item / Model
VTH-3000ATC Request a Quote
VTH-3000ATC-I Request a Quote
VTH-3000ATC-II Request a Quote
VTH-3000ATC-III Request a Quote
VTH-3500ATC Request a Quote
VTH-3500ATC-I Request a Quote
VTH-3500ATC-II Request a Quote
VTH-3500ATC-III Request a Quote

Table Size (in.)

118

118

118

118

138

138

138

138

Max Swing (in.)

134

134

134

134

161

161

161

161

Std. Cutting Dia. (in.)

130

130

130

130

150

150

150

150

Z Travel (in.)

59.1

59.1

59.1

59.1

59.1

59.1

59.1

59.1

Rail Travel (in.)

47.2

55

79

95

47.2

55

79

95

Ram to Table Max (in.)

85

101

124

140

85

101

124

140

Table Load (lbs.)

99,000

99,000

99,000

99,000

99,000

99,000

99,000

99,000

ATC System

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

Spindle HP

100 x 2

100 x 2

100 x 2

100 x 2

100 x 2

100 x 2

100 x 2

100 x 2

RPM

75

75

75

75

75

75

75

75

C Axis

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Twin Ram

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Weight (lbs.)

154,000

164,000

174,000

184,000

198,000

208,000

218,000

228,000

Item / Model
VTH-4000ATC Request a Quote
VTH-4000ATC-I Request a Quote
VTH-4000ATC-II Request a Quote
VTH-4000-III Request a Quote
VTH-4500ATC Request a Quote
VTH-4500ATC-I Request a Quote
VTH-4500ATC-II Request a Quote
VTH-4500ATC-III Request a Quote

Table Size (in.)

157

157

157

157

177

177

177

177

Max Swing (in.)

181

181

181

181

201

201

201

201

Std. Cutting Dia. (in.)

169

169

169

169

189

189

189

189

Z Travel (in.)

59.1

59.1

59.1

59.1

59.1

59.1

59.1

59.1

Rail Travel (in.)

47.2

55

79

95

47.2

55

79

95

Ram to Table Max (in.)

81

97

120

136

81

97

120

136

Table Load (lbs.)

132,000

132,000

132,000

132,000

132,000

132,000

132,000

132,000

ATC System

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

Spindle HP

100 x 2

100 x 2

100 x 2

100 x 2

100 x 2

100 x 2

100 x 2

100 x 2

RPM

60

60

60

60

60

60

60

60

C Axis

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Twin Ram

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Weight (lbs.)

220,000

230,000

240,000

250,000

275,000

285,000

295,000

305,000

Item / Model
VTH-5000ATC Request a Quote
VTH-5000ATC-I Request a Quote
VTH-5000ATC-II Request a Quote
VTH-5000ATC-III Request a Quote
VTH-6000ATC Request a Quote
VTH-6000ATC-I Request a Quote
VTH-6000ATC-II Request a Quote
VTH-6000ATC-III Request a Quote

Table Size (in.)

197

197

197

197

236

236

236

236

Max Swing (in.)

252

252

252

252

291

291

291

291

Std. Cutting Dia. (in.)

232

232

232

232

271

271

271

271

Z Travel (in.)

59.1

59.1

79

79

59.1

59.1

79

79

Rail Travel (in.)

55

79

95

110

55

79

95

110

Ram to Table Max (in.)

101

124

140

156

101

124

140

156

Table Load (lbs.)

220,000

220,000

220,000

220,000

330,000

330,000

330,000

330,000

ATC System

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

Spindle HP

100 x 2

100 x 2

100 x 2

100 x 2

100 x 2

100 x 2

100 x 2

100 x 2

RPM

60

60

60

60

60

60

60

60

C Axis

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Twin Ram

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Weight (lbs.)

484,000

494,000

504,000

514,000

616,000

626,000

636,000

646,000

Item / Model
VTH-7000ATC Request a Quote
VTH-7000ATC-I Request a Quote
VTH-7000ATC-II Request a Quote
VTH-7000ATC-III Request a Quote
VTH-8000ATC Request a Quote
VTH-8000ATC-I Request a Quote
VTH-8000ATC-II Request a Quote
VTH-8000ATC-III Request a Quote

Table Size (in.)

275

275

275

275

315

315

315

315

Max Swing (in.)

354

354

354

354

354

354

354

354

Std. Cutting Dia. (in.)

335

335

335

335

350

350

350

350

Z Travel (in.)

59.1

79

79

98

59.1

79

79

98

Rail Travel (in.)

63

95

110

157

63

95

110

157

Ram to Table Max (in.)

120

152

168

215

120

152

168

215

Table Load (lbs.)

550,000

550,000

550,000

550,000

660,000

660,000

660,000

660,000

ATC System

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

12 / 16 /32 / 60

Spindle HP

100 x 2

133 x 2

133 x 2

133 x 2

133 x 2

133 x 2

133 x 2

133 x 2

RPM

20

20

20

20

10

10

10

10

C Axis

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Twin Ram

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Weight (lbs.)

880,000

890,000

900,000

910,000

924,000

934,000

944,000

954,000