CNC Big Bore Lathes (Flat Bed) - STC-Series

STC-Series

Swing 37 – 60 in.
Centers 80 – 200 in.
Bore 6, 9, 12 & 15 in.
Bed Width 49 in.

Overview

The extra heavy duty big bore spindle lathe offers spindle bores of 6”, 9”, 12”, 15”and 20” diameter for different sizes of materials. The center distance range from 60” to 315”. The machine bed is 49” wide. It is designed with 6 bedways. The cross slide and tailstock travels on separate bedways.

  • Swing over bedways: 38″, 40″, 50″, 60″, 70″
  • Bet centers: 40″, 60″, 80″, 120″, 160″, 200″, 240″, 315″.
  • Spindle bore: 6″ standard, 9″, 12″, 15″, 20″ optional
  • Spindle motor: 15 hp, 30 hp, 40 hp, larger hp available
  • Bed width: 49″ with 6 bedways.
  • Cross slide and tailstock travels on different bedways

Features

Three Points Support Headstock Spindle

The headstock casting is designed with one ball bearing and two tapered roller bearings supporting the full length of the spindle shaft.

Spindle bore sizes are available in 6”, 9”’ 10″, 12” , and 15”. Double chucks are available as options.

Gears and shafts are made from hardened and ground alloy steel, the spindle is made from forged, chrome alloy material.

One Piece Casting Bed/Base

The oversized 24” wide bedways are induction hardened and ground for long lasting accuracy.

One piece casting bedways and base offer rigidity and stiffness to the entire machine to enhance heavy cutting

6 Bedways Construction

The cross slide and tailstock travels on separate bedways to redistribute cutting forces on to the machine body. There are 6 bedways, 1 V way and 5 flat ways. One additional bedway supports just the apron. This design also avoids inference between cross slide and tailstock during certain machining process.

Large Selections Of Tool Posts

There are different types of optional turret tool posts to be mounted on the cross slide. There are 4 way, 6 way, 8, 12 positions hydraulic or motorized tool holding devices for different works.

Powered Tailstock and quill

The standard tailstock is equipped with a motorized  quill feed and motorized tailstock base travel.  Large hand crank allows convenient positioning of tailstock quill. Hydraulic tailstock lock along the bed is optional.

Specs 

STC Series – 38" Swing
Dimensions (STC-38200)InchMetric
Maximum Swing Over Bed37.8 in.960 mm
Distance Between Centers196.9 in. 5001 mm
Spindle Bore6 in.
9 in.
12 in.
15 in.
152 mm
229 mm
305 mm
381 mm
Main Motor30 hp (Std.)
40 hp & 60 hp (Opt.)
22.37 Kw
29.82 Kw & 44.74 Kw
CNC ControlFANUC Oi-TDFANUC Oi-TD
Bed (STC-38200)InchMetric
Bed Way Construction2 V, 2 Flat Ways2 V, 2 Flat Ways
Width of Bed49.2 in. 1250 mm
Length of Bed272 in. 6908 mm
Travel (STC-38200)InchMetric
X-Axis Travel
(Varies by different turrets installed)
15.75 in. 400 mm
Z-Axis Travel196.9 in. 5001 mm
X-Axis Ball Screw Diameter1.57 in. 40 mm
Z-Axis Ball Screw Diameter2.48 in. 63 mm
Motor (STC-38200)InchMetric
Spindle Motor30 hp (STD Fanuc Alpha 22) Opt: 40 hp or 60 hp 22.37 Kw (STD Fanuc Alpha 22) Opt: 29.82 Kw & 44.74 Kw
X-Axis Servo Motor5 hp 3.72 kw
Z-Axis Servo Motor5 hp 3.72 kw
Hydraulic Pump2 hp 1.5 kw
Coolant Pump1.7 hp 1.27 kw
Machine Weight (STC-38200)InchMetric
Weight47,300 lbs. 21,455 kg
Dimensions (STC-38200)InchMetric

Length

(Length with Chip Conveyor)

31.58 ft. 9.62 M
Width12.5 ft. 3.81 M
Height 7.41 ft. 2.25 M
STC Series – 44" Swing

Dimensions

STC-4480STC-44120STC-44160STC-44200
Maximum Swing Over Bed

44.09 in.

(1120 mm)

44.09 in.

(1120 mm)

44.09 in.

(1120 mm)

44.09 in.

(1120 mm)

Distance Between Centers

78.74 in.

(2,000 mm)

118.11 in.

(3,000 mm)

157.48 in.

(4,000 mm)

196.85 in.

(5,000 mm)

Maximum roll cutting dia. 

38.19 in.

(970 mm)

38.19 in.

(970 mm)

38.19 in.

(970 mm)

38.19 in.

(970 mm)

Minimum roll cutting dia. 

12.60 in.

(320 mm)

12.60 in.

(320 mm)

12.60 in.

(320 mm)

12.60 in.

(320 mm)

Maximum cutting length

78.74 in.

(2,000 mm)

118.11 in.

(3,000 mm)

157.48 in.

(4,000 mm)

196.85 in.

(5,000 mm)

Spindle Bore

6 in. (152 mm)

9 in. (230 mm)

10 in (255 mm)

12 in. (305 mm)

15 in. (380 mm)

6 in. (152 mm)

9 in. (230 mm)

10 in (255 mm)

12 in. (305 mm)

15 in. (380 mm)

6 in. (152 mm)

9 in. (230 mm)

10 in (255 mm)

12 in. (305 mm)

15 in. (380 mm)

6 in. (152 mm)

9 in. (230 mm)

10 in (255 mm)

12 in. (305 mm)

15 in. (380 mm)

Main Motor

30 hp (Std.)

40 hp & 50 hp (Opt.)

30 hp (Std.)

40 hp & 50 hp (Opt.)

30 hp (Std.)

40 hp & 50 hp (Opt.)

30 hp (Std.)

40 hp & 50 hp (Opt.)

CNC Control

FANUC Oi-TF

FANUC Oi-TF

FANUC Oi-TF

FANUC Oi-TF

BedSTC-44120STC-44120STC-44160STC-44200
Bed Way Construction

Multiple guides

Multiple guides

Multiple guides

Multiple guides

Width of Bed

49.21 in.

(1250 mm)

49.21 in.

(1250 mm)

49.21 in.

(1250 mm)

49.21 in.

(1250 mm)

Length of Bed

157.48 in.

(4000 mm)

196.85 in.

(5000 mm)

236.22 in.

(6000 mm)

275.59 in.

(7000 mm)

TravelSTC-4480STC-44120STC-44160STC-44200
X-Axis Travel
(Varies by different turrets installed)
15.75 in.
(400 mm)
15.75 in.
(400 mm)
15.75 in.
(400 mm)
15.75 in.
(400 mm)
Z-Axis Travel

78.74 in.

(2,000 mm)

118.11 in.

(3,000 mm)

157.48 in.

(4,000 mm)

196.85 in.

(5,000 mm)

X-Axis Ball Screw Diameter1.57 in.
(40 mm)
1.57 in.
(40 mm)
1.57 in.
(40 mm)
1.57 in.
(40 mm)
Z-Axis Ball Screw Diameter2.48 in.
(63 mm)
2.48 in.
(63 mm)
2.48 in.
(63 mm)
2.48 in.
(63 mm)
MotorSTC-4480STC-44120STC-44160STC-44200
Spindle Motor

30 hp (STD Fanuc Alpha 22)

Opt: 40 hp or 50 hp

30 hp (STD Fanuc Alpha 22)

Opt: 40 hp or 50 hp

30 hp (STD Fanuc Alpha 22)

Opt: 40 hp or 50 hp

30 hp (STD Fanuc Alpha 22)

Opt: 40 hp or 50 hp

X-Axis Servo Motor

5.3 hp

(Fanuc AC servo)

5.3 hp

(Fanuc AC servo)

5.3 hp

(Fanuc AC servo)

5.3 hp

(Fanuc AC servo)

Z-Axis Servo Motor

5.3 hp

(Fanuc AC servo)

5.3 hp

(Fanuc AC servo)

9.3 hp (

Fanuc AC servo)

9.3 hp (

Fanuc AC servo)

Hydraulic Pump2 hp
(1.5 kw)
2 hp
(1.5 kw)
2 hp
(1.5 kw)
2 hp
(1.5 kw)
Coolant Pump1.7 hp
(1.27 Kw)
1.7 hp
(1.27 Kw)
1.7 hp
(1.27 Kw)
1.7 hp
(1.27 Kw)
Machine WeightSTC-4480STC-44120STC-44160STC-44200
Weight

35,200 lbs.

(16,000 kg)

39,600 lbs.

(18,000 kg)

44,100 lbs.

20,000 kg)

48,500 lbs.

(22,000 kg)

DimensionsSTC-4480STC-44120STC-44160STC-44200

Length

(Length with Chip Conveyor)

242.1 in.

(6,150 mm)

281.5 in.

(7,150 mm)

320.9 in.

(8,150 mm)

360.2 in.

(9,150 mm)

Width

150.4 in.

(3,820 mm)

150.4 in.

(3,820 mm)

150.4 in.

(3,820 mm)

150.4 in.

(3,820 mm)

Height

89.0 in.

(2,260 mm)

89.0 in.

(2,260 mm)

89.0 in.

(2,260 mm)

89.0 in.

(2,260 mm)

All specifications subject to change without notice. Please call to verify.

Accessories

Standard Accessories

  • Controller: Fanuc Oi TF
  • Flat belt conveyor
  • Spindle 4-steps speed auto change
  • X/Z axes auto lubrication system
  • Coolant system
  • X/Z-axes with Turcite-B on slideways
  • X/Z-axes C3 ballscrew
  • Manual tailstock, MT 6
  • Steady rest 16”
  • Full enclosure splash guard
  • Heat exchanger
  • Electronic handwheel (MPG)
  • Tailstock interference protection
  • Work lamp

Optional Accessories

  • 4 jaw chuck, different sizes
  • 3 jaw chuck, different sizes
  • 3 jaw hydraulic chuck, different sizes
  • Face plate with 4 jaws, different sizes
  • Steady rest , over 16”, different sizes
  • Follow rests, different sizes
  • Boring attachment for bar dia. 120mm                          
  • Spindle chiller
  • Rear chuck Adapter
  • Hydraulic turret 4-way turret
  • Hydraulic turret V-8 tools, includes boring toolholder 3 pcs, facing toolholder 1 pc and turret sleeve
  • Hydraulic turret V-12 tools, includes boring toolholder 3 pcs, facing toolholder 1 pc and turret sleeve
  • Tailstock base with hydraulic lock bolt

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