Johnford ST Series โ€“ 60 Degree Horizontal Slant Bed Turning Centers

Johnford ST Series horizontal turning centers feature a one piece, 60หš slant-bed torque tube design. The torque tube, or hole cast through the center of the slant bed, maximizes rigidity and dissipates heat. For optimum strength and accuracy, the machines are cast from rigid Meehanite iron.

Swing over the bed for the 28-machine series ranges from 31โ€ณ (533 mm) to 47.2 โ€ (1,199 mm). Swings over the cross slide are 23.6โ€ณ (600 mm) to 39.4โ€ณ (1,000 mm). Distance between centers begins at 40โ€ณ (1,016 mm) and is 400โ€ณ (10,160 mm) on the largest machine.

Square box ways provide rigidity for heavy turning, and hand-scraped sliding surfaces are coated with Turcite B to enable high rapid traverse rates and accurate positioning. Double-nut ballscrews are pre-tensioned to minimize thermal growth.

To ensure precision and thermal stability, the headstock, tailstock and saddle all are mounted on the same plane at a 60หš angle. The coolant tank is separate from the machine base to prevent heat transfer from the coolant to the machine casting, minimizing the effect of changing temperatures and facilitating cleanout and maintenance.

Spindle power in the series ranges from 35-60 hp, delivered through a 2-4 speed gearbox that delivers high torque at low rpm. An extensive range of spindle types and sizes is available.

Standard features include a 20โ€ณ (508 mm) chuck, a complete coolant system, and a programmable hydraulic tailstock and quill. Among optional features are 12-station live tooling with a full C-axis spindle, Y-axis capability, axial and radial live tool heads, and 300 psi/ 1,000 psi high pressure coolant systems.

Specifications

Item / Model
ST-400JX Request a Quote

Swing Over Bed (in.)

36.2

36.2

36.2

39.4

39.4

39.4

39.4

39.4

39.4

40.2

40.2

40.2

47.2

47.2

47.2

47.2

47.2

47.2

47.2

Swing Over Cross Slide (in.)

27.6

27.6

27.6

31.5

31.5

31.5

31.5

31.5

31.5

31.5

31.5

31.5

39.4

39.4

39.4

39.4

39.4

39.4

39.4

Center Distance (in.)

40

54

69

80

100

130

160

200

240

40

54

69

80

100

130

160

200

240

400

Spindle Types

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

A,B,C,D,E,F,G,H,I,J

Turret Tool Capacity

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

Spindle HP

35 โ€“ 60

35 โ€“ 60

35 โ€“ 60

35 โ€“ 60

35 โ€“ 60

35 โ€“ 60

35 โ€“ 60

35 โ€“ 60

35 โ€“ 60

35 โ€“ 60

35 โ€“ 60

35 โ€“ 60

35 โ€“ 60

35 โ€“ 60

35 โ€“ 60

35 โ€“ 60

35 โ€“ 60

35 โ€“ 60

60

Spindle Drive

2/4 Speed Gear Box

2/4 Speed Gear Box

2/4 Speed Gear Box

2/4 Speed Gear Box

2/4 Speed Gear Box

2/4 Speed Gear Box

2/4 Speed Gear Box

2/4 Speed Gear Box

2/4 Speed Gear Box

2/4 Speed Gear Box

2/4 Speed Gear Box

2/4 Speed Gear Box

2/4 Speed Gear Box

2/4 Speed Gear Box

2/4 Speed Gear Box

2/4 Speed Gear Box

2/4 Speed Gear Box

2/4 Speed Gear Box

4 speed gearbox

C Axis

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Y Axis

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Sub Spindle

No

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Twin Turrets

No

No

No

Optional โ€“ Hex

Optional โ€“ Hex

Optional โ€“ Hex

Optional โ€“ Hex

Optional โ€“ Hex

Optional โ€“ Hex

No

No

No

Optional โ€“ Hex

Optional โ€“ Hex

Optional โ€“ Hex

Optional โ€“ Hex

Optional โ€“ Hex

Optional โ€“ Hex

Single

Weight (lbs.)

24,200

26,260

29,040

33,220

36,520

44,440

53,240

62,040

70,840

24,640

26,840

29,260

33,440

36,740

44,660

53,460

62,260

71,060

134,200

Spindle

Spindle ID

Draw Tube ID

RPM(Max)

Bearing ID

Chuck Size

A (A2-11)

4.5โ€

4.01โ€

3000

6.3โ€

12โ€~18โ€ hyd.

B (A2-11)

5.2โ€

4.56โ€

2000

7.1โ€

15โ€~24โ€ hyd.

C (A2-15)

5.98โ€

5.47โ€

1500

7.87โ€

20โ€~32โ€ hyd.

D (A2-15

7.28โ€

6.5โ€

1000

9.45โ€

20โ€~32โ€ hyd.

E (A2-15)

9.29โ€

8โ€

800

11.02โ€

24โ€~40โ€ hyd.

F (A2-20)

10โ€

โ€”-

500

12.5โ€

24โ€~40โ€ man.

G (A2-20)

12.5โ€

โ€”-

500

14โ€

24โ€~40โ€ man.

H (A2-20)

14โ€

โ€”-

400

16โ€

28โ€~40โ€ man.

I (A2-28

16โ€

โ€”-

350

18.5โ€

32โ€~48โ€ man.

J (A2-28)

21โ€

โ€”-

250

24โ€

32โ€~48โ€ man.

K(A2-32)

24โ€

โ€”-

200

27โ€

36โ€~48โ€ man.

In Stock and Ready for Immediate Delivery

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