You Ji VHL Series – Vertical Turning Lathes with Side Milling Head

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The You Ji VHL Aerospace Components Series comprises advanced vertical turning lathes equipped with side heads, specifically designed for aerospace manufacturing applications. These machines combine a vertical ram with an integrated horizontal side head, facilitating multitasking operations such as turning, drilling, tapping, milling, and grinding.

The horizontal ram extends past wide diameters to access difficult-to-reach areas, enabling the use of shorter tools and eliminating the need to transfer parts to other machines. The side head allows for side milling without a right-angle head and supports pinch-turning of thin-walled aerospace components like engine casings.

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SPECIFICATIONS

Item / Model	VHL-1200ATC Request a Quote	VHL-1200ATC-II Request a Quote	VHL-1600ATC Request a Quote	VHL-2000ATC-I+ ATC-II Request a Quote	VHL-3000ATC-II Request a Quote
Capacities
Maximum Swing	63″	63″	78.7″	98.4″	137.8″
Std. Turning Diameter	55.1″	55.1″	63″	90.55″	118.1″
Max. Turning Diameter	63″	63″	71″	98.4″	133.8″
Max. Cross Travel X1 Axis	– 15.7″ ~ + 34.4″	– 15.7″ ~ + 34.4″	– 23.6″ ~ + 40″	– 23.6″ ~ +53.14″	– 59.1″ ~ +71.8″
Max. Longitudinal Travel Z1 Axis	35.4″	47.2″	47.2″	37.4″ (ATC), 47.2″ (ATC-I), 55.1″ (ACT-II)	59.1″
Max. Cross Travel for Horizontal Ram X2 Axis	31.5″	31.5″	31.5″	37.4″	39.06″
Max. Longitudinal Travel for Horizontal Ram Z2 Axis	39.4″	63″	70.86″	39.4″ (ATC), 55.1″ (ATC-I), 63″ (ATC-II)	94.5″
Max. Cross Rail Travel	31.5″	47.2″	55.1″	45.27″ (ATC), 61″ (ATC-I), 61″ (ATC-II)	78.7″
Vertical Ram Distance to Table with Ram Retracted (max./min.)	59.4″ / 27.9″	83.07″ / 35.87″	83.1″ / 35.9″	80.7″ / 35.5″ (ATC), 96.45″ / 35.5″ (ATC-I), 96.45″ / 35.5″ (ATC-II)	125.6″ / 46.9″
Horizontal Ram Distance to Table Center from Ram Face (max./min.)	47.2″ / 15.7″	46.14″ / 15.7″	46.14″ / 14.65″	61″ / 23.6″	68.9″ / 29.84″
Horizontal Ram Distance to Table from Ram Center (max./min.)	44.3″ / 4.92″	67.92″ / 4.92″	75.8″ / 4.92″	44.3″ / 4.9″ (ATC), 60″ / 4.9″ (ATC-I), 67.9″ / 4.9″ (ATC-II)	98.4″ / 3.94″
Spindle
Spindle Motor	60 HP (100 HP opt.)	60 HP (100 HP opt.)	100 HP	100 HP	100 HP Fanuc, 112 HP Siemens
Spindle Load	11,000 lbs.	11,000 lbs.	17,600 lbs	22,000 lbs.	44,000 lbs.
Spindle RPM	1 – 350 RPM	1 – 350 RPM	1 – 250 RPM	2 – 200 RPM	1 – 120 RPM
Spindle Bearing Diameter	24″ O.D. / 18″ I.D.	18″	29.92″ O.D. / 22.8″ I.D.	36″ O.D. / 27″ I.D.	40.5″ I.D. / 52.5″ O.D.
Spindle Torque	9,220 ft./lbs.	9,220 ft./lbs.	26,380 ft./lbs.	41,143 ft./lbs.	49,659 ft./lbs @ 10 RPM
Manual Chuck	49″ 4-Jaw Independent	49″ 4-Jaw Independent	63″ 4-Jaw Independent	79″ 4-Jaw Independent	118″ 8-Jaw Independent
ATC (Vertical Ram)
Tool Positions	12	12	12	12 (16, 32, 60 opt.)	16
ATC Type	Umbrella / Electric	Umbrella / Electric	Umbrella / Electric	Umbrella / Electric	Umbrella / Electric
Tool Mounting	#50 Taper	#50 Taper	#50 Taper	#50 Taper	#50 Taper
O.D. Tool Shank Size	1.25″	1.25″	1.25″	1.25″	1.25, 1.5″, 2″
I.D. Tool Shank Size	2.5″	2.5″	2.5″	2.5″	2.5″ or larger
Tool Change Time	30 Seconds	30 Seconds	30 Seconds	30 Seconds	30 Seconds
Max. Single Tool Weight	110 lbs.	110 lbs.	110 lbs.	110 lbs.	110 lbs.
Max. Magazine Capacity	800 lbs.	800 lbs.	800 lbs.	800 lbs.	1,100 lbs.
ATC (Horizontal Ram – OPTIONAL)
Tool Positions				10
ATC Type				Umbrella / Electric
Tool Mounting				#50 Taper
O.D. Tool Shank Size				1.25″
I.D. Tool Shank Size				2.5″
Tool Change Time				30 Seconds
Max. Single Tool Weight				55 lbs.
Max. Magazine Capacity				550 lbs.
Ballscrews & Axis Motors
Z1, Z2 Axis Ballscrew Diameter	63mm (2.48″) x 10 Pitch	63mm (2.48″) x 10 Pitch	63mm (2.48″) x 10 Pitch	63mm (2.48″) x 10 Pitch	63mm (2.48″) x 10 Pitch
X1, X2 Axis Ballscrew Diameter	63mm (2.48″) x 10 Pitch	63mm (2.48″) x 10 Pitch	63mm (2.48″) x 10 Pitch	63mm (2.48″) x 10 Pitch	63mm (2.48″) x 10 Pitch
Ballscrew Type	Class 3 Double Nut	Class 3 Double Nut	Class 3 Double Nut	Class 3 Double Nut	Class 3 Double Nut
Ballscrew Mounting Type	Pre-loaded, Double Anchored	Pre-loaded, Double Anchored	Pre-loaded, Double Anchored	Pre-loaded, Double Anchored	Pre-loaded, Double Anchored
X-Z-C Servo Motor	X 9HP (2) Z 9HP (2) C 9HP	X 9HP (2) Z 9HP (2) C 9HP	X 9HP (2) Z 9HP (2) C=9HP	X1 & X2 9HP Z1 9HP Z2 18HP (2) C 9HP	X 9HP (2), Z 9HP (2), C 9HP Fanuc Z 11HP (2), Z 11HP (2), C 11HP Siemens
Feeds
Rapid Traverse Rate	472 (X), 394 (Z) IPM	472 (X), 394 (Z) IPM	472 (X), 394 (Z) IPM	472 (X1), 394 (Z1) IPM 394 (X2), 394 (Z2) IPM	236 (X), 394 (Z) IPM
Cutting Feed Rate	0.01 – 197 IPM	0.01 – 197 IPM	0.01 – 197 IPM	0.01 – 787 IPM	0.01 – 787 IPM
Positioning Accuracy	± .0003″ Full Stroke	± .0003″ Full Stroke	± .0003″ Full Stroke	± .0003″ Full Stroke	± .0003″ Full Stroke
Repeatability	± .0002″	± .0002″	± .0002″	± .0002″	± .0002″
Vertical & Horizontal Rams
Vertical Ram Size	9″ (220mm) Square	10″ (220mm) Square		10″ (250mm) Square
Vertical Ram Tool Interface	BT-50 Taper	BT-50 Taper		BT-50 Taper
Horizontal Ram Size	10″ (250mm) Square	10″ (250mm) Square		10″ (250mm) Square
Horizontal Ram Tool Interface	BT-50 Taper or 4 Position Turret opt.	BT-50 Taper or 4 Position Turret opt.		BT-50 Taper or 4 Position Turret opt.
C Axis & Live Tools (opt. for both Rams)
Spindle Motor	15 HP (20, 25, 30 opt.)	15 HP (20, 25, 30 opt.)	15 HP (20, 25, 30 opt.)	20 HP (25, 30, 35 opt.)	20 HP
Drive System	2 Speed Gearbox	2 Speed Gearbox	2 Speed Gearbox	2 Speed Gearbox	2 Speed Gearbox
Spindle RPM	2,400	2,400	2,400	2,400	2,400
Tool Shank Type	BT-50	BT-50	BT-50	BT-50	BT-50
C Axis Contouring	.001°	.001°	.001°	.001°	.001°
General
Coolant Tank Capacity	200 Gallons	200 Gallons	200 Gallons	400 Gallons	500 Gallons
Coolant Pump Motor	1.33 HP and .75 HP	1.33 HP and .75 HP	1.33 HP and .75 HP	1.33HP x 22 & 4HP x 1	4 HP
Machine Weight	90,000 lbs. est.	100,000 lbs. est.	100,000 lbs. est.	135,000 lbs. est.	218,000 lbs. est.
Floor Space (std. machine)	413″ x 236″ x 240″	413″ x 236″ x 264″	478″ x 251″ x 256″	570″ x 255″ x 255″-295″	231″ x 395″ x 314″
Machine Power Source	208/220V, 3 Phase, 250 Amps*	208/220V, 3 Phase, 250 Amps*	208/220V, 3 Phase, 250 Amps*	440/460/480V, 3 Phase, 250 Amps*	208/220V, 3 Phase, 400 Amps*
Hydraulic Pump Motor	3 HP	3 HP	3 HP	7.5 HP	3 HP

* Consult AMT or local distributor for exact power requirements with selected options.

Dual Spindle Configuration: Two synchronized spindles reduce cutting time and increase efficiency by over 30%.
Robust Construction: X- and Z-axes feature box way designs with hand-scraped mating surfaces coated with Turcite B for smooth, precise movement. The large, square Z-axis ram maintains rigidity even when fully extended.
Spindle Specifications: Heavy-duty spindles incorporate Timken cross roller bearings and NN type roller bearings to withstand high axial and radial loads. Spindle motors offer 60–100 HP and 9,220–46,659 lbs./ft. of torque, with a two-speed gearbox transmitting power through an intermediate gearbox.
Tooling Options: The 2-axis side head employs BT-50 or CAPTO C-6 tooling and features a horizontal 9.8″ (248 mm) square ram for heavy side cutting on tall parts. Manual tool change is standard, with optional automatic tool changing. The umbrella-style automatic tool changer stores twelve 50-taper tools, with larger tool magazines available as options.
Precision and Control: Class 3 ballscrews are driven directly by servo motors, eliminating belts or gears. The cross rail’s hydraulically driven movement on box ways is programmable and movable in 200 mm (7.8″) increments, with positive locking pins and dual lead screws ensuring level positioning.